/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id$
 */

// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/validators/schema/TraverseSchema.hpp>
#include <xercesc/framework/XMLEntityHandler.hpp>
#include <xercesc/framework/XMLValidityCodes.hpp>
#include <xercesc/validators/schema/identity/IC_Key.hpp>
#include <xercesc/validators/schema/identity/IC_KeyRef.hpp>
#include <xercesc/validators/schema/identity/IC_Unique.hpp>
#include <xercesc/validators/schema/identity/IC_Field.hpp>
#include <xercesc/validators/schema/identity/IC_Selector.hpp>
#include <xercesc/validators/schema/identity/XercesXPath.hpp>
#include <xercesc/util/XMLStringTokenizer.hpp>
#include <xercesc/validators/schema/XUtil.hpp>
#include <xercesc/validators/common/GrammarResolver.hpp>
#include <xercesc/internal/XMLReader.hpp>
#include <xercesc/validators/schema/ComplexTypeInfo.hpp>
#include <xercesc/validators/schema/NamespaceScope.hpp>
#include <xercesc/validators/schema/SchemaAttDefList.hpp>
#include <xercesc/internal/XMLScanner.hpp>
#include <xercesc/framework/LocalFileInputSource.hpp>
#include <xercesc/framework/URLInputSource.hpp>
#include <xercesc/framework/XMLGrammarPool.hpp>
#include <xercesc/framework/XMLSchemaDescription.hpp>
#include <xercesc/validators/schema/identity/XPathException.hpp>
#include <xercesc/validators/schema/GeneralAttributeCheck.hpp>
#include <xercesc/validators/schema/XercesGroupInfo.hpp>
#include <xercesc/validators/schema/XercesAttGroupInfo.hpp>
#include <xercesc/validators/schema/XSDLocator.hpp>
#include <xercesc/validators/schema/XSDDOMParser.hpp>
#include <xercesc/dom/DOMNamedNodeMap.hpp>
#include <xercesc/dom/DOMText.hpp>
#include <xercesc/dom/impl/XSDElementNSImpl.hpp>
#include <xercesc/util/OutOfMemoryException.hpp>
#include <xercesc/util/NumberFormatException.hpp>
#include <xercesc/util/XMLEntityResolver.hpp>
#include <xercesc/util/XMLUri.hpp>
#include <xercesc/framework/psvi/XSAnnotation.hpp>
#include <xercesc/framework/MemBufInputSource.hpp>
#include <xercesc/internal/XSAXMLScanner.hpp>

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  TraverseSchema: Local declaration
// ---------------------------------------------------------------------------

// This helper class will handle the parsing of namespace prefixes for a given DOMElement, and its winding back
class NamespaceScopeManager
{
public:
    NamespaceScopeManager(const DOMElement* const node, SchemaInfo* info, TraverseSchema* traverser)
    {
        fScopeAdded=node?traverser->retrieveNamespaceMapping(node):false;
        fSchemaInfo=info;
    }
    ~NamespaceScopeManager()
    {
        if(fScopeAdded)
            fSchemaInfo->getNamespaceScope()->decreaseDepth();

    }
protected:
    bool        fScopeAdded;
    SchemaInfo* fSchemaInfo;
};

// ---------------------------------------------------------------------------
//  TraverseSchema: Static member data
// ---------------------------------------------------------------------------


// ---------------------------------------------------------------------------
//  TraverseSchema: Local const data
// ---------------------------------------------------------------------------
static const XMLCh fgAnonSNamePrefix[] =
{
    chUnderscore, chUnderscore, chLatin_A, chLatin_n, chLatin_o, chLatin_n, chLatin_S, chNull
};

static const XMLCh fgAnonCNamePrefix[] =
{
    chUnderscore, chUnderscore, chLatin_A, chLatin_n, chLatin_o, chLatin_n, chLatin_C, chNull
};

static const XMLCh fgUnbounded[] =
{
    chLatin_u, chLatin_n, chLatin_b, chLatin_o, chLatin_u, chLatin_n, chLatin_d,
    chLatin_e, chLatin_d, chNull
};

static const XMLCh fgValueOne[] =
{
    chDigit_1, chNull
};

static const XMLCh fgValueZero[] =
{
    chDigit_0, chNull
};

static const XMLCh* fgIdentityConstraints[] =
{
    SchemaSymbols::fgELT_UNIQUE,
    SchemaSymbols::fgELT_KEY,
    SchemaSymbols::fgELT_KEYREF
};

static const XMLCh fgSynthetic_Annotation[] =
{
    chLatin_S, chLatin_y, chLatin_n, chLatin_t, chLatin_h, chLatin_e, chLatin_t
    ,   chLatin_i, chLatin_c, chUnderscore
    ,   chLatin_A, chLatin_n, chLatin_n, chLatin_o, chLatin_t, chLatin_a, chLatin_t
    ,   chLatin_i, chLatin_o, chLatin_n, chNull
};


// Flags for global declaration
enum {
    ENUM_ELT_SIMPLETYPE,
    ENUM_ELT_COMPLEXTYPE,
    ENUM_ELT_ELEMENT,
    ENUM_ELT_ATTRIBUTE,
    ENUM_ELT_ATTRIBUTEGROUP,
    ENUM_ELT_GROUP,
    ENUM_ELT_SIZE
};

typedef JanitorMemFunCall<TraverseSchema>   CleanupType;

// ---------------------------------------------------------------------------
//  TraverseSchema: Constructors and Destructor
// ---------------------------------------------------------------------------
TraverseSchema::TraverseSchema( DOMElement* const    schemaRoot
                              , XMLStringPool* const   uriStringPool
                              , SchemaGrammar* const   schemaGrammar
                              , GrammarResolver* const grammarResolver
                              , RefHash2KeysTableOf<SchemaInfo>* cachedSchemaInfoList
                              , RefHash2KeysTableOf<SchemaInfo>* schemaInfoList
                              , XMLScanner* const      xmlScanner
                              , const XMLCh* const     schemaURL
                              , XMLEntityHandler* const  entityHandler
                              , XMLErrorReporter* const errorReporter
                              , MemoryManager* const    manager
                              , bool multipleImport)
    : fFullConstraintChecking(false)
    , fTargetNSURI(-1)
    , fEmptyNamespaceURI(-1)
    , fCurrentScope(Grammar::TOP_LEVEL_SCOPE)
    , fScopeCount(schemaGrammar->getScopeCount ())
    , fAnonXSTypeCount(schemaGrammar->getAnonTypeCount ())
    , fCircularCheckIndex(0)
    , fTargetNSURIString(0)
    , fDatatypeRegistry(0)
    , fGrammarResolver(grammarResolver)
    , fSchemaGrammar(schemaGrammar)
    , fEntityHandler(entityHandler)
    , fErrorReporter(errorReporter)
    , fURIStringPool(uriStringPool)
    , fStringPool(0)
    , fBuffer(1023, manager)
    , fScanner(xmlScanner)
    , fAttributeDeclRegistry(0)
    , fComplexTypeRegistry(0)
    , fGroupRegistry(0)
    , fAttGroupRegistry(0)
    , fIC_ElementsNS(0)
    , fPreprocessedNodes(0)
    , fSchemaInfo(0)
    , fCurrentGroupInfo(0)
    , fCurrentAttGroupInfo(0)
    , fCurrentComplexType(0)
    , fCurrentTypeNameStack(0)
    , fCurrentGroupStack(0)
    , fIC_Elements(0)
    , fDeclStack(0)
    , fGlobalDeclarations(0)
    , fNonXSAttList(0)
    , fImportedNSList(0)
    , fIC_NodeListNS(0)
    , fNotationRegistry(0)
    , fRedefineComponents(0)
    , fIdentityConstraintNames(0)
    , fValidSubstitutionGroups(0)
    , fSchemaInfoList(schemaInfoList)
    , fCachedSchemaInfoList (cachedSchemaInfoList)
    , fParser(0)
    , fLocator(0)
    , fMemoryManager(manager)
    , fGrammarPoolMemoryManager(fGrammarResolver->getGrammarPoolMemoryManager())
    , fAnnotation(0)
    , fAttributeCheck(manager)
{
    CleanupType cleanup(this, &TraverseSchema::cleanUp);

    try {

        if (fGrammarResolver && schemaRoot && fURIStringPool) {

            init();

            if (multipleImport)
            {
              // If we are working on an existing schema, do some
              // intitialization that is otherwise done by preprocessSchema.
              //
              fComplexTypeRegistry = fSchemaGrammar->getComplexTypeRegistry();
              fGroupRegistry = fSchemaGrammar->getGroupInfoRegistry();
              fAttGroupRegistry = fSchemaGrammar->getAttGroupInfoRegistry();
              fAttributeDeclRegistry = fSchemaGrammar->getAttributeDeclRegistry();
              fValidSubstitutionGroups = fSchemaGrammar->getValidSubstitutionGroups();
            }

            preprocessSchema(schemaRoot, schemaURL, multipleImport);
            doTraverseSchema(schemaRoot);

            // Store the scope and anon type counts in case we need to add
            // more to this grammar (multi-import case). schemaGrammar and
            // fSchemaGrammar should be the same here.
            //
            fSchemaGrammar->setScopeCount (fScopeCount);
            fSchemaGrammar->setAnonTypeCount (fAnonXSTypeCount);
        }

    }
    catch(const OutOfMemoryException&)
    {
        cleanup.release();

        throw;
    }

    cleanup.release();
}


TraverseSchema::~TraverseSchema()
{
   cleanUp();
}


// ---------------------------------------------------------------------------
//  TraverseSchema: Traversal methods
// ---------------------------------------------------------------------------
void TraverseSchema::doTraverseSchema(const DOMElement* const schemaRoot) {

    // process children nodes
    processChildren(schemaRoot);

    // Handle identity constraints - keyref
    if (fIC_ElementsNS && fIC_ElementsNS->containsKey(fTargetNSURIString)) {

        fIC_Elements = fIC_ElementsNS->get(fTargetNSURIString);

        XMLSize_t icListSize = fIC_Elements->size();

        for (XMLSize_t i=0; i < icListSize; i++) {

            SchemaElementDecl* curElem = fIC_Elements->elementAt(i);
            ValueVectorOf<DOMElement*>* icNodes =  fIC_NodeListNS->get(curElem);
            XMLSize_t icNodesSize = icNodes->size();

            for (XMLSize_t j = 0; j < icNodesSize; j++) {
                traverseKeyRef(icNodes->elementAt(j), curElem);
            }
        }
    }

    if (fScanner->getValidateAnnotations() && !fSchemaGrammar->getAnnotations()->isEmpty())
    {
        validateAnnotations();
    }
    fSchemaInfo->setProcessed();
}

void TraverseSchema::preprocessSchema(DOMElement* const schemaRoot,
                                      const XMLCh* const schemaURL,
                                      bool  multipleImport) {
    if (!multipleImport) {
        // Make sure namespace binding is defaulted
        const XMLCh* rootPrefix = schemaRoot->getPrefix();

        if (rootPrefix == 0 || !*rootPrefix) {

            const XMLCh* xmlnsStr = schemaRoot->getAttribute(XMLUni::fgXMLNSString);

            if (!xmlnsStr || !*xmlnsStr) {
                schemaRoot->setAttribute(XMLUni::fgXMLNSString, SchemaSymbols::fgURI_SCHEMAFORSCHEMA);
            }
        }

        // Set schemaGrammar data and add it to GrammarResolver
        // For complex type registry, attribute decl registry , group/attGroup
        // and namespace mapping, needs to check whether the passed in
        // Grammar was a newly instantiated one.
        fComplexTypeRegistry = fSchemaGrammar->getComplexTypeRegistry();

        if (fComplexTypeRegistry == 0 ) {

            fComplexTypeRegistry = new (fGrammarPoolMemoryManager) RefHashTableOf<ComplexTypeInfo>(29, fGrammarPoolMemoryManager);
            fSchemaGrammar->setComplexTypeRegistry(fComplexTypeRegistry);
        }

        fGroupRegistry = fSchemaGrammar->getGroupInfoRegistry();

        if (fGroupRegistry == 0 ) {

            fGroupRegistry = new (fGrammarPoolMemoryManager) RefHashTableOf<XercesGroupInfo>(13, fGrammarPoolMemoryManager);
            fSchemaGrammar->setGroupInfoRegistry(fGroupRegistry);
        }

        fAttGroupRegistry = fSchemaGrammar->getAttGroupInfoRegistry();

        if (fAttGroupRegistry == 0 ) {

            fAttGroupRegistry = new (fGrammarPoolMemoryManager) RefHashTableOf<XercesAttGroupInfo>(13, fGrammarPoolMemoryManager);
            fSchemaGrammar->setAttGroupInfoRegistry(fAttGroupRegistry);
        }

        fAttributeDeclRegistry = fSchemaGrammar->getAttributeDeclRegistry();

        if (fAttributeDeclRegistry == 0) {

            fAttributeDeclRegistry = new (fGrammarPoolMemoryManager) RefHashTableOf<XMLAttDef>(29, fGrammarPoolMemoryManager);
            fSchemaGrammar->setAttributeDeclRegistry(fAttributeDeclRegistry);
        }

        fValidSubstitutionGroups = fSchemaGrammar->getValidSubstitutionGroups();

        if (!fValidSubstitutionGroups) {

            fValidSubstitutionGroups = new (fGrammarPoolMemoryManager) RefHash2KeysTableOf<ElemVector>(29, fGrammarPoolMemoryManager);
            fSchemaGrammar->setValidSubstitutionGroups(fValidSubstitutionGroups);
        }

        //Retrieve the targetnamespace URI information
        const XMLCh* targetNSURIStr = schemaRoot->getAttribute(SchemaSymbols::fgATT_TARGETNAMESPACE);
        fSchemaGrammar->setTargetNamespace(targetNSURIStr);

        fCurrentScope = Grammar::TOP_LEVEL_SCOPE;
        fTargetNSURIString = fSchemaGrammar->getTargetNamespace();
        fTargetNSURI = fURIStringPool->addOrFind(fTargetNSURIString);

        XMLSchemaDescription* gramDesc = (XMLSchemaDescription*) fSchemaGrammar->getGrammarDescription();
        gramDesc->setTargetNamespace(fTargetNSURIString);

        fGrammarResolver->putGrammar(fSchemaGrammar);
    }
    else {
        fCurrentScope = Grammar::TOP_LEVEL_SCOPE;

        fTargetNSURIString = fSchemaGrammar->getTargetNamespace();
        fTargetNSURI = fURIStringPool->addOrFind(fTargetNSURIString);
    }

    SchemaInfo* currInfo = new (fMemoryManager) SchemaInfo(0, 0, 0, fTargetNSURI,
                                          0,
                                          schemaURL,
                                          fTargetNSURIString, schemaRoot,
                                          fScanner,
                                          fGrammarPoolMemoryManager);

    currInfo->getNamespaceScope()->reset(fEmptyNamespaceURI);
    // Add mapping for the xml prefix
    currInfo->getNamespaceScope()->addPrefix(XMLUni::fgXMLString, fURIStringPool->addOrFind(XMLUni::fgXMLURIName));

    if (fSchemaInfo)
        fSchemaInfo->addSchemaInfo(currInfo, SchemaInfo::IMPORT);

    addImportedNS(currInfo->getTargetNSURI());

    fSchemaInfo = currInfo;
    fSchemaInfoList->put((void*) fSchemaInfo->getCurrentSchemaURL(), fSchemaInfo->getTargetNSURI(), fSchemaInfo);
    fSchemaInfo->addSchemaInfo(fSchemaInfo, SchemaInfo::INCLUDE);
    traverseSchemaHeader(schemaRoot);

    // preprocess chidren
    preprocessChildren(schemaRoot);
}


void TraverseSchema::traverseSchemaHeader(const DOMElement* const schemaRoot) {

    // Make sure that the root element is <xsd:schema>
    if (!XMLString::equals(schemaRoot->getLocalName(), SchemaSymbols::fgELT_SCHEMA)) {
        reportSchemaError(schemaRoot, XMLUni::fgXMLErrDomain, XMLErrs::InvalidXMLSchemaRoot);
    }

    // Make sure that the targetNamespace value is not empty string
    checkForEmptyTargetNamespace(schemaRoot);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        schemaRoot, GeneralAttributeCheck::E_Schema, this
        , true, fSchemaInfo->getNonXSAttList()
    );

    retrieveNamespaceMapping(schemaRoot);
    // Add mapping for the default namespace
    if ((!fTargetNSURIString || !*fTargetNSURIString) && schemaRoot->getAttributeNode(XMLUni::fgXMLNSString)==NULL)
        fSchemaInfo->getNamespaceScope()->addPrefix(XMLUni::fgZeroLenString, fEmptyNamespaceURI);

    unsigned short elemAttrDefaultQualified = 0;

    if (XMLString::equals(schemaRoot->getAttribute(SchemaSymbols::fgATT_ELEMENTFORMDEFAULT),
                                  SchemaSymbols::fgATTVAL_QUALIFIED)) {
        elemAttrDefaultQualified |= Elem_Def_Qualified;
    }

    if (XMLString::equals(schemaRoot->getAttribute(SchemaSymbols::fgATT_ATTRIBUTEFORMDEFAULT),
                                  SchemaSymbols::fgATTVAL_QUALIFIED)) {
        elemAttrDefaultQualified |= Attr_Def_Qualified;
    }

    fSchemaInfo->setElemAttrDefaultQualified(elemAttrDefaultQualified);
    fSchemaInfo->setBlockDefault(parseBlockSet(schemaRoot, ES_Block, true));
    fSchemaInfo->setFinalDefault(parseFinalSet(schemaRoot, ECS_Final, true));
}


XSAnnotation*
TraverseSchema::traverseAnnotationDecl(const DOMElement* const annotationElem,
                                       ValueVectorOf<DOMNode*>* const nonXSAttList,
                                       const bool topLevel) {

    NamespaceScopeManager nsMgr(annotationElem, fSchemaInfo, this);
    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        annotationElem, GeneralAttributeCheck::E_Annotation, this, topLevel
    );

    const XMLCh* contents = 0;
    DOMElement* child = XUtil::getFirstChildElement(annotationElem);
    if (child) {
        for (;
             child != 0;
             child = XUtil::getNextSiblingElement(child)) {

            const XMLCh* name = child->getLocalName();

            if (XMLString::equals(name, SchemaSymbols::fgELT_APPINFO)) {

                DOMNode* textContent = child->getFirstChild();
                if (textContent && textContent->getNodeType() == DOMNode::TEXT_NODE)
                    contents = ((DOMText*) textContent)->getData();

                fAttributeCheck.checkAttributes(child, GeneralAttributeCheck::E_Appinfo, this);
            }
            else if (XMLString::equals(name, SchemaSymbols::fgELT_DOCUMENTATION)) {

                DOMNode* textContent = child->getFirstChild();
                if (textContent && textContent->getNodeType() == DOMNode::TEXT_NODE)
                    contents = ((DOMText*) textContent)->getData();

                fAttributeCheck.checkAttributes(child, GeneralAttributeCheck::E_Documentation, this);
            }
            else {
                reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::InvalidAnnotationContent);
            }
        }
    }
    else
    {
        // If the Annotation has no children, get the text directly
        DOMNode* textContent = annotationElem->getFirstChild();
        if (textContent && textContent->getNodeType() == DOMNode::TEXT_NODE)
            contents = ((DOMText*) textContent)->getData();
    }

    if (contents && !fScanner->getIgnoreAnnotations())
    {
        XSAnnotation* theAnnotation = 0;

        XMLSize_t nonXSAttSize = nonXSAttList->size();

        if (nonXSAttSize)
        {
            int annotTokenStart = XMLString::patternMatch(
                contents, SchemaSymbols::fgELT_ANNOTATION);

            if (annotTokenStart == -1) // something is wrong
                return 0;

            // set annotation element
            fBuffer.set(contents, annotTokenStart + 10);

            for (XMLSize_t i=0; i<nonXSAttSize; i++)
            {
                DOMNode* attNode = nonXSAttList->elementAt(i);

                if (!XMLString::equals(
                        annotationElem->getAttributeNS(
                           attNode->getNamespaceURI(), attNode->getLocalName())
                        , XMLUni::fgZeroLenString)
                   )
                {
                    continue;
                }

                fBuffer.append(chSpace);
                fBuffer.append(attNode->getNodeName());
                fBuffer.append(chEqual);
                fBuffer.append(chDoubleQuote);
                processAttValue(attNode->getNodeValue(), fBuffer);
                fBuffer.append(chDoubleQuote);
            }

            // add remaining annotation content
            fBuffer.append(contents + annotTokenStart + 10);

            theAnnotation = new (fGrammarPoolMemoryManager) XSAnnotation(fBuffer.getRawBuffer(), fGrammarPoolMemoryManager);
        }
        else
        {
            theAnnotation = new (fGrammarPoolMemoryManager) XSAnnotation(contents, fGrammarPoolMemoryManager);
        }

        /***
         * set line, col and systemId info
        ***/
        theAnnotation->setLineCol(
                                  ((XSDElementNSImpl*)annotationElem)->getLineNo()
                                , ((XSDElementNSImpl*)annotationElem)->getColumnNo()
                                 );
        theAnnotation->setSystemId(fSchemaInfo->getCurrentSchemaURL());

        return theAnnotation;
    }

    return 0;
}


/**
  * Traverse include
  *
  *    <include
  *        id = ID
  *        schemaLocation = anyURI
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation?)
  *    </include>
  */
void TraverseSchema::preprocessInclude(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Include, this, true, fNonXSAttList);

    // -----------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // -----------------------------------------------------------------------
    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);

    if (fAnnotation)
        fSchemaGrammar->addAnnotation(fAnnotation);
    else if (fScanner->getGenerateSyntheticAnnotations() && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        fSchemaGrammar->addAnnotation(fAnnotation);
    }

    // -----------------------------------------------------------------------
    // Get 'schemaLocation' attribute
    // -----------------------------------------------------------------------
    const XMLCh* schemaLocation = getElementAttValue(elem, SchemaSymbols::fgATT_SCHEMALOCATION, DatatypeValidator::AnyURI);

    if (!schemaLocation || !*schemaLocation) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNoSchemaLocation, SchemaSymbols::fgELT_INCLUDE);
        return;
    }

    // ------------------------------------------------------------------
    // Resolve schema location
    // ------------------------------------------------------------------
    fLocator->setValues(fSchemaInfo->getCurrentSchemaURL(), 0,
                        ((XSDElementNSImpl*) elem)->getLineNo(),
                        ((XSDElementNSImpl*) elem)->getColumnNo());
    InputSource* srcToFill = resolveSchemaLocation(schemaLocation,
            XMLResourceIdentifier::SchemaInclude);
    Janitor<InputSource> janSrc(srcToFill);

    // Nothing to do
    if (!srcToFill) {
        return;
    }

    const XMLCh* includeURL = srcToFill->getSystemId();
    SchemaInfo* includeSchemaInfo = fCachedSchemaInfoList->get(includeURL, fTargetNSURI);

    if (!includeSchemaInfo && fSchemaInfoList != fCachedSchemaInfoList)
      includeSchemaInfo = fSchemaInfoList->get(includeURL, fTargetNSURI);

    if (includeSchemaInfo) {

        fSchemaInfo->addSchemaInfo(includeSchemaInfo, SchemaInfo::INCLUDE);
        return;
    }

    // ------------------------------------------------------------------
    // Parse input source
    // ------------------------------------------------------------------
    if (!fParser)
        fParser = new (fGrammarPoolMemoryManager) XSDDOMParser(0, fGrammarPoolMemoryManager, 0);

    fParser->setValidationScheme(XercesDOMParser::Val_Never);
    fParser->setDoNamespaces(true);
    fParser->setUserEntityHandler(fEntityHandler);
    fParser->setUserErrorReporter(fErrorReporter);

    // Should just issue warning if the schema is not found
    bool flag = srcToFill->getIssueFatalErrorIfNotFound();
    srcToFill->setIssueFatalErrorIfNotFound(false);

    fParser->parse(*srcToFill);

    // Reset the InputSource
    srcToFill->setIssueFatalErrorIfNotFound(flag);

    if (fParser->getSawFatal() && fScanner->getExitOnFirstFatal())
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::SchemaScanFatalError);

    // ------------------------------------------------------------------
    // Get root element
    // ------------------------------------------------------------------
    DOMDocument* document = fParser->getDocument();

    if (document) {

        DOMElement* root = document->getDocumentElement();

        if (root) {

            const XMLCh* targetNSURIString = root->getAttribute(SchemaSymbols::fgATT_TARGETNAMESPACE);

            // check to see if targetNameSpace is right
            if (*targetNSURIString
                && !XMLString::equals(targetNSURIString,fTargetNSURIString)){
                reportSchemaError(root, XMLUni::fgXMLErrDomain, XMLErrs::IncludeNamespaceDifference,
                                  schemaLocation, targetNSURIString);
                return;
            }

            // if targetNamespace is empty, change it to includ'g schema
            // targetNamespace
            if (!*targetNSURIString && root->getAttributeNode(XMLUni::fgXMLNSString) == 0
                && fTargetNSURI != fEmptyNamespaceURI) {
                root->setAttribute(XMLUni::fgXMLNSString, fTargetNSURIString);
            }

            // --------------------------------------------------------
            // Update schema information with included schema
            // --------------------------------------------------------
            SchemaInfo* saveInfo = fSchemaInfo;

            fSchemaInfo = new (fMemoryManager) SchemaInfo(0, 0, 0, fTargetNSURI,
                                         0,
                                         includeURL,
                                         fTargetNSURIString, root,
                                         fScanner,
                                         fGrammarPoolMemoryManager);

            fSchemaInfo->getNamespaceScope()->reset(fEmptyNamespaceURI);
            // Add mapping for the xml prefix
            fSchemaInfo->getNamespaceScope()->addPrefix(XMLUni::fgXMLString, fURIStringPool->addOrFind(XMLUni::fgXMLURIName));

            fSchemaInfoList->put((void*) fSchemaInfo->getCurrentSchemaURL(),
                                 fSchemaInfo->getTargetNSURI(), fSchemaInfo);
            fPreprocessedNodes->put((void*) elem, fSchemaInfo);
            saveInfo->addSchemaInfo(fSchemaInfo, SchemaInfo::INCLUDE);
            traverseSchemaHeader(root);
            preprocessChildren(root);
            fSchemaInfo = saveInfo;
        }
    }
}


void TraverseSchema::traverseInclude(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    SchemaInfo* includeInfo = fPreprocessedNodes->get(elem);

    if (includeInfo) {

        SchemaInfo* saveInfo = fSchemaInfo;

        fSchemaInfo = includeInfo;
        processChildren(includeInfo->getRoot());
        fSchemaInfo = saveInfo;
    }
}


/**
  * Traverse import
  *
  *    <import
  *        id = ID
  *        namespace = anyURI
  *        schemaLocation = anyURI
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation?)
  *    </import>
  */
void TraverseSchema::preprocessImport(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Import, this, true, fNonXSAttList);

    // -----------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // -----------------------------------------------------------------------
    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);

    if (fAnnotation)
        fSchemaGrammar->addAnnotation(fAnnotation);
    else if (fScanner->getGenerateSyntheticAnnotations() && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        fSchemaGrammar->addAnnotation(fAnnotation);
    }
    // -----------------------------------------------------------------------
    // Handle 'namespace' attribute
    // -----------------------------------------------------------------------
    const XMLCh* nameSpace = getElementAttValue(elem, SchemaSymbols::fgATT_NAMESPACE, DatatypeValidator::AnyURI);
    const XMLCh* nameSpaceValue = nameSpace ? nameSpace : XMLUni::fgZeroLenString;

    if (XMLString::equals(nameSpaceValue, fTargetNSURIString)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::Import_1_1);
        return;
    }

    if (!*nameSpaceValue && fTargetNSURI == fEmptyNamespaceURI) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::Import_1_2);
        return;
    }

    // ------------------------------------------------------------------
    // Get 'schemaLocation' attribute
    // ------------------------------------------------------------------
    const XMLCh* schemaLocation = getElementAttValue(elem, SchemaSymbols::fgATT_SCHEMALOCATION, DatatypeValidator::AnyURI);

    // ------------------------------------------------------------------
    // Resolve namespace to a grammar
    // ------------------------------------------------------------------
    Grammar* aGrammar = 0;

    {
        XMLSchemaDescription* gramDesc =fGrammarResolver->getGrammarPool()->createSchemaDescription(nameSpaceValue);
        Janitor<XMLSchemaDescription> janName(gramDesc);
        gramDesc->setContextType(XMLSchemaDescription::CONTEXT_IMPORT);
        gramDesc->setLocationHints(schemaLocation);
        aGrammar = fGrammarResolver->getGrammar(gramDesc);
    }

    bool grammarFound = (aGrammar && (aGrammar->getGrammarType() == Grammar::SchemaGrammarType));

    if (grammarFound) {
        addImportedNS(fURIStringPool->addOrFind(nameSpaceValue));
    }

    // a bare <xs:import/> doesn't load anything
    if(!schemaLocation && !nameSpace)
        return;

    // ------------------------------------------------------------------
    // Resolve schema location
    // ------------------------------------------------------------------
    fLocator->setValues(fSchemaInfo->getCurrentSchemaURL(), 0,
                        ((XSDElementNSImpl*) elem)->getLineNo(),
                        ((XSDElementNSImpl*) elem)->getColumnNo());
    InputSource* srcToFill = resolveSchemaLocation(schemaLocation,
            XMLResourceIdentifier::SchemaImport, nameSpace);

    // Nothing to do
    if (!srcToFill) {
        if (!grammarFound) {
            addImportedNS(fURIStringPool->addOrFind(nameSpaceValue));
        }

        return;
    }

    Janitor<InputSource> janSrc(srcToFill);
    const XMLCh* importURL = srcToFill->getSystemId();
    unsigned int nameSpaceId = nameSpace ? fURIStringPool->addOrFind(nameSpace) : fEmptyNamespaceURI;

    SchemaInfo* importSchemaInfo = fCachedSchemaInfoList->get(importURL, nameSpaceId);

    if (!importSchemaInfo && fSchemaInfoList != fCachedSchemaInfoList)
      importSchemaInfo = fSchemaInfoList->get(importURL, nameSpaceId);

    if (importSchemaInfo) {
        fSchemaInfo->addSchemaInfo(importSchemaInfo, SchemaInfo::IMPORT);
        addImportedNS(importSchemaInfo->getTargetNSURI());
        return;
    }

    if (grammarFound) {
        if (!fScanner->getHandleMultipleImports())
            return;
    }

    // ------------------------------------------------------------------
    // Parse input source
    // ------------------------------------------------------------------
    if (!fParser)
        fParser = new (fGrammarPoolMemoryManager) XSDDOMParser(0, fGrammarPoolMemoryManager, 0);

    fParser->setValidationScheme(XercesDOMParser::Val_Never);
    fParser->setDoNamespaces(true);
    fParser->setUserEntityHandler(fEntityHandler);
    fParser->setUserErrorReporter(fErrorReporter);

    // Should just issue warning if the schema is not found
    bool flag = srcToFill->getIssueFatalErrorIfNotFound();
    srcToFill->setIssueFatalErrorIfNotFound(false);

    fParser->parse(*srcToFill) ;

    // Reset the InputSource
    srcToFill->setIssueFatalErrorIfNotFound(flag);

    if (fParser->getSawFatal() && fScanner->getExitOnFirstFatal())
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::SchemaScanFatalError);

    // ------------------------------------------------------------------
    // Get root element
    // ------------------------------------------------------------------
    DOMDocument* document = fParser->getDocument();

    if (document) {

        DOMElement* root = document->getDocumentElement();

        if (!root) {
            return;
        }

        const XMLCh* targetNSURIString = root->getAttribute(SchemaSymbols::fgATT_TARGETNAMESPACE);

        if (!XMLString::equals(targetNSURIString, nameSpaceValue)) {
            reportSchemaError(root, XMLUni::fgXMLErrDomain, XMLErrs::ImportNamespaceDifference,
                              schemaLocation, targetNSURIString, nameSpaceValue);
        }
        else {

            // --------------------------------------------------------
            // Preprocess new schema
            // --------------------------------------------------------
            SchemaInfo* saveInfo = fSchemaInfo;
            fSchemaGrammar->setScopeCount (fScopeCount);
            fSchemaGrammar->setAnonTypeCount (fAnonXSTypeCount);
            if (grammarFound) {
                fSchemaGrammar = (SchemaGrammar*) aGrammar;
            }
            else {
                fSchemaGrammar = new (fGrammarPoolMemoryManager) SchemaGrammar(fGrammarPoolMemoryManager);
            }
            fScopeCount = fSchemaGrammar->getScopeCount ();
            fAnonXSTypeCount = fSchemaGrammar->getAnonTypeCount ();

            XMLSchemaDescription* gramDesc = (XMLSchemaDescription*) fSchemaGrammar->getGrammarDescription();
            gramDesc->setContextType(XMLSchemaDescription::CONTEXT_IMPORT);
            gramDesc->setLocationHints(importURL);

            preprocessSchema(root, importURL, grammarFound);
            fPreprocessedNodes->put((void*) elem, fSchemaInfo);

            // --------------------------------------------------------
            // Restore old schema information
            // --------------------------------------------------------
            restoreSchemaInfo(saveInfo, SchemaInfo::IMPORT);
        }
    }
}


void TraverseSchema::traverseImport(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    SchemaInfo* importInfo = fPreprocessedNodes->get(elem);

    if (importInfo) {

        // --------------------------------------------------------
        // Traverse new schema
        // --------------------------------------------------------
        SchemaInfo* saveInfo = fSchemaInfo;

        restoreSchemaInfo(importInfo, SchemaInfo::IMPORT);
        doTraverseSchema(importInfo->getRoot());

        // --------------------------------------------------------
        // Restore old schema information
        // --------------------------------------------------------
        restoreSchemaInfo(saveInfo, SchemaInfo::IMPORT);
    }
}


/**
  * Traverse redefine declaration
  *
  *    <redefine>
  *        schemaLocation = uriReference
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation | (
  *            attributeGroup | complexType | group | simpleType))*
  *    </redefine>
  */
void TraverseSchema::preprocessRedefine(const DOMElement* const redefineElem) {

    NamespaceScopeManager nsMgr(redefineElem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        redefineElem, GeneralAttributeCheck::E_Redefine, this, true
    );

    // First, we look through the children of redefineElem. Each one will
    // correspond to an element of the redefined schema that we need to
    // redefine.  To do this, we rename the element of the redefined schema,
    // and rework the base or ref tag of the kid we're working on to refer to
    // the renamed group or derive the renamed type.  Once we've done this, we
    // actually go through the schema being redefined and convert it to a
    // grammar. Only then do we run through redefineDecl's kids and put them
    // in the grammar.
    SchemaInfo* redefiningInfo = fSchemaInfo;

    if (!openRedefinedSchema(redefineElem)) {

        redefiningInfo->addFailedRedefine(redefineElem);
        return;
    }

    if (!fRedefineComponents) {
        fRedefineComponents = new (fMemoryManager) RefHash2KeysTableOf<XMLCh>(13, (bool) false, fMemoryManager);
    }

    SchemaInfo* redefinedInfo = fSchemaInfo;
    renameRedefinedComponents(redefineElem, redefiningInfo, redefinedInfo);

    // Now we have to preprocess our nicely-renamed schemas.
    if (fPreprocessedNodes->containsKey(redefineElem)) {

        fSchemaInfo = redefinedInfo;
        preprocessChildren(fSchemaInfo->getRoot());
    }

    fSchemaInfo = redefiningInfo;
}

void TraverseSchema::traverseRedefine(const DOMElement* const redefineElem) {

    NamespaceScopeManager nsMgr(redefineElem, fSchemaInfo, this);

    SchemaInfo* saveInfo = fSchemaInfo;
    SchemaInfo* redefinedInfo = fPreprocessedNodes->get(redefineElem);

    if (redefinedInfo) {

        // Now we have to march through our nicely-renamed schemas. When
        // we do these traversals other <redefine>'s may perhaps be
        // encountered; we leave recursion to sort this out.
        fSchemaInfo = redefinedInfo;
        processChildren(fSchemaInfo->getRoot());
        fSchemaInfo = saveInfo;

        // Now traverse our own <redefine>
        processChildren(redefineElem);
    }
}


/**
  * Traverse the Choice, Sequence declaration
  *
  *    <choice-sequence
  *        id = ID
  *        maxOccurs = (nonNegativeInteger | unbounded)  : 1
  *        minOccurs = nonNegativeInteger : 1
  *        Content: (annotation?, (element | group | choice | sequence | any)*)
  *    </choice-sequence>
  */
ContentSpecNode*
TraverseSchema::traverseChoiceSequence(const DOMElement* const elem,
                                       const int modelGroupType,
                                       bool& hasChildren)
{
    hasChildren = false;
    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Sequence, this, false, fNonXSAttList
    );

    // -----------------------------------------------------------------------
    // Process contents
    // -----------------------------------------------------------------------
    DOMElement* child = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);
    Janitor<ContentSpecNode>    left(0);
    Janitor<ContentSpecNode>    right(0);

    bool hadContent = false;

    Janitor<ContentSpecNode> contentSpecNode(0);
    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {
        hasChildren = true;
        contentSpecNode.release();
        bool seeParticle = false;
        bool wasAny = false;
        const XMLCh* childName = child->getLocalName();

        if (XMLString::equals(childName, SchemaSymbols::fgELT_ELEMENT)) {

            SchemaElementDecl* elemDecl = traverseElementDecl(child);

            if (!elemDecl )
                continue;

            contentSpecNode.reset(new (fGrammarPoolMemoryManager) ContentSpecNode
            (
                elemDecl
                , fGrammarPoolMemoryManager
            ));
            seeParticle = true;
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_GROUP)) {

            XercesGroupInfo* grpInfo = traverseGroupDecl(child, false);

            if (!grpInfo) {
                continue;
            }

            ContentSpecNode* grpContentSpecNode = grpInfo->getContentSpec();

            if (!grpContentSpecNode) {
                continue;
            }

            if (grpContentSpecNode->hasAllContent()) {

                reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::AllContentLimited);
                continue;
            }

            contentSpecNode.reset(new (fGrammarPoolMemoryManager) ContentSpecNode(*grpContentSpecNode));
            seeParticle = true;
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_CHOICE)) {
            bool hasChild;
            contentSpecNode.reset(traverseChoiceSequence(child,ContentSpecNode::Choice, hasChild));
            seeParticle = true;
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_SEQUENCE)) {
            bool hasChild;
            contentSpecNode.reset(traverseChoiceSequence(child,ContentSpecNode::Sequence, hasChild));
            seeParticle = true;
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_ANY)) {

            contentSpecNode.reset(traverseAny(child));
            seeParticle = true;
            wasAny = true;
        }
        else {
            reportSchemaError(child, XMLUni::fgValidityDomain, XMLValid::GroupContentRestricted,
                              childName,
                              ((ContentSpecNode::NodeTypes) modelGroupType) == ContentSpecNode::Choice?SchemaSymbols::fgELT_CHOICE:SchemaSymbols::fgELT_SEQUENCE);
        }

        if (seeParticle) {
            checkMinMax(contentSpecNode.get(), child, Not_All_Context);
            if (wasAny && contentSpecNode.get()->getMaxOccurs() == 0) {
                contentSpecNode.reset(0);
            }
        }

        if (contentSpecNode.get()) {
            hadContent = true;
        }

        if (left.get() == 0) {
            left.reset(contentSpecNode.release());
        }
        else if (right.get() == 0) {
            right.reset(contentSpecNode.release());
        }
        else {
            ContentSpecNode* newNode =
                   new (fGrammarPoolMemoryManager) ContentSpecNode
            (
                (ContentSpecNode::NodeTypes) modelGroupType
                , left.get()
                , right.get()
                , true
                , true
                , fGrammarPoolMemoryManager
            );

            left.release();
            right.release();

            left.reset(newNode);
            right.reset(contentSpecNode.release());
        }
    }
    contentSpecNode.release();

    if (hadContent)
    {
        ContentSpecNode* newNode =
               new (fGrammarPoolMemoryManager) ContentSpecNode
        (
            ((ContentSpecNode::NodeTypes) modelGroupType) == ContentSpecNode::Choice
                ? ContentSpecNode::ModelGroupChoice : ContentSpecNode::ModelGroupSequence
            , left.get()
            , right.get()
            , true
            , true
            , fGrammarPoolMemoryManager
        );

        left.release();

        left.reset(newNode);

        if (!janAnnot.isDataNull())
            fSchemaGrammar->putAnnotation(left.get(), janAnnot.release());
    }

    right.release();
    return left.release();
}

/**
  * Traverse SimpleType declaration:
  * <simpleType
  *     id = ID
  *     name = NCName>
  *     Content: (annotation? , ((list | restriction | union)))
  * </simpleType>
  *
  * traverse <list>|<restriction>|<union>
  */
DatatypeValidator*
TraverseSchema::traverseSimpleTypeDecl(const DOMElement* const childElem,
                                       const bool topLevel, int baseRefContext)
{
    NamespaceScopeManager nsMgr(childElem, fSchemaInfo, this);

    // ------------------------------------------------------------------
    // Process contents
    // ------------------------------------------------------------------
    const XMLCh* name = getElementAttValue(childElem,SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    bool nameEmpty = (!name || !*name);

    if (topLevel && nameEmpty) {
        reportSchemaError(childElem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameGlobalElement,
                          SchemaSymbols::fgELT_SIMPLETYPE);
        return 0;
    }
    else if(!topLevel && !nameEmpty) {
        reportSchemaError(childElem, XMLUni::fgXMLErrDomain, XMLErrs::AttributeDisallowedLocal,
                          SchemaSymbols::fgATT_NAME, childElem->getLocalName());
        return 0;
    }

    if (nameEmpty) { // anonymous simpleType
        name = genAnonTypeName(fgAnonSNamePrefix);
    }
    else if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name)) ) {

        reportSchemaError(childElem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_SIMPLETYPE, name);
        return 0;
    }

    fBuffer.set(fTargetNSURIString);
    fBuffer.append(chComma);
    fBuffer.append(name);

    unsigned int fullTypeNameId = fStringPool->addOrFind(fBuffer.getRawBuffer());
    const XMLCh* fullName = fStringPool->getValueForId(fullTypeNameId);

    //check if we have already traversed the same simpleType decl
    DatatypeValidator* dv = fDatatypeRegistry->getDatatypeValidator(fullName);

    if (!dv) {

        // -------------------------------------------------------------------
        // Check attributes
        // -------------------------------------------------------------------
        unsigned short scope = (topLevel) ? GeneralAttributeCheck::E_SimpleTypeGlobal
                                          : GeneralAttributeCheck::E_SimpleTypeLocal;

        fAttributeCheck.checkAttributes(
            childElem, scope, this, topLevel, fNonXSAttList
        );

        // Circular constraint checking
        if (fCurrentTypeNameStack->containsElement(fullTypeNameId)) {

            reportSchemaError(childElem, XMLUni::fgXMLErrDomain, XMLErrs::NoCircularDefinition, name);
            return 0;
        }

        fCurrentTypeNameStack->addElement(fullTypeNameId);

        // Get 'final' values
        int finalSet = parseFinalSet(childElem, S_Final);

        // annotation?,(list|restriction|union)
        DOMElement* content= checkContent(
            childElem, XUtil::getFirstChildElement(childElem), false);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(childElem, fNonXSAttList);
        }
        Janitor<XSAnnotation> janAnnot(fAnnotation);
        if (content == 0) {

            reportSchemaError(childElem, XMLUni::fgXMLErrDomain, XMLErrs::EmptySimpleTypeContent);
            popCurrentTypeNameStack();
            return 0;
        }

        const XMLCh* varietyName = content->getLocalName();

        // Remark: some code will be repeated in list|restriction| union but it
        //         is cleaner that way
        if (XMLString::equals(varietyName, SchemaSymbols::fgELT_LIST)) { //traverse List
            if ((baseRefContext & SchemaSymbols::XSD_LIST) != 0) {

                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::AtomicItemType);
                popCurrentTypeNameStack();
                return 0;
            }

            dv = traverseByList(childElem, content, name, fullName, finalSet, &janAnnot);
        }
        else if (XMLString::equals(varietyName, SchemaSymbols::fgELT_RESTRICTION)) { //traverse Restriction
            dv = traverseByRestriction(childElem, content, name, fullName, finalSet, &janAnnot);
        }
        else if (XMLString::equals(varietyName, SchemaSymbols::fgELT_UNION)) { //traverse union
            dv = traverseByUnion(childElem, content, name, fullName, finalSet, baseRefContext, &janAnnot);
        }
        else {
            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::FeatureUnsupported, varietyName);
            popCurrentTypeNameStack();
        }

        if (dv) {
            if (nameEmpty)
                dv->setAnonymous();

            if (!janAnnot.isDataNull())
                fSchemaGrammar->putAnnotation(dv, janAnnot.release());
        }
    }

    return dv;
}

/**
  * Traverse ComplexType Declaration - CR Implementation.
  *
  *     <complexType
  *        abstract = boolean
  *        block = #all or (possibly empty) subset of {extension, restriction}
  *        final = #all or (possibly empty) subset of {extension, restriction}
  *        id = ID
  *        mixed = boolean : false
  *        name = NCName>
  *        Content: (annotation? , (simpleContent | complexContent |
  *                   ( (group | all | choice | sequence)? ,
  *                   ( (attribute | attributeGroup)* , anyAttribute?))))
  *     </complexType>
  */
int TraverseSchema::traverseComplexTypeDecl(const DOMElement* const elem,
                                            const bool topLevel,
                                            const XMLCh* const recursingTypeName) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // Get the attributes of the complexType
    const XMLCh* name = getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    bool isAnonymous = false;

    if (!name || !*name) {

        if (topLevel) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TopLevelNoNameComplexType);
            return -1;
        }

        if (recursingTypeName)
            name = recursingTypeName;
        else {
            name = genAnonTypeName(fgAnonCNamePrefix);
            isAnonymous = true;
        }
    }

    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name)) ) {

        //REVISIT - Should we return or continue and save type with wrong name?
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_COMPLEXTYPE, name);
        return -1;
    }

    // ------------------------------------------------------------------
    // Check if the type has already been registered
    // ------------------------------------------------------------------
    fBuffer.set(fTargetNSURIString);
    fBuffer.append(chComma);
    fBuffer.append(name);

    int typeNameIndex = fStringPool->addOrFind(fBuffer.getRawBuffer());
    const XMLCh* fullName = fStringPool->getValueForId(typeNameIndex);
    ComplexTypeInfo* typeInfo = 0;

    if (topLevel || recursingTypeName) {

        typeInfo = fComplexTypeRegistry->get(fullName);

        if (typeInfo && !typeInfo->getPreprocessed()) {
            return typeNameIndex;
        }
    }

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    bool preProcessFlag = (typeInfo) ? typeInfo->getPreprocessed() : false;
    if (!preProcessFlag) {
        fAttributeCheck.checkAttributes(
            elem, (topLevel) ? GeneralAttributeCheck::E_ComplexTypeGlobal
                             : GeneralAttributeCheck::E_ComplexTypeLocal
            , this, topLevel, fNonXSAttList
        );
    }

    // -----------------------------------------------------------------------
    // Create a new instance
    // -----------------------------------------------------------------------
    XMLSize_t previousCircularCheckIndex = fCircularCheckIndex;
    unsigned int previousScope = fCurrentScope;

    if (preProcessFlag) {

        fCurrentScope = typeInfo->getScopeDefined();
        typeInfo->setPreprocessed(false);
    }
    else {

        // ------------------------------------------------------------------
        // Register the type
        // ------------------------------------------------------------------
        typeInfo = new (fGrammarPoolMemoryManager) ComplexTypeInfo(fGrammarPoolMemoryManager);
        if(isAnonymous) {
            typeInfo->setAnonymous();
        }

        fCurrentScope = fScopeCount++;
        fComplexTypeRegistry->put((void*) fullName, typeInfo);
        typeInfo->setTypeName(fullName);
        typeInfo->setScopeDefined(fCurrentScope);

        if (fFullConstraintChecking) {

            XSDLocator* aLocator = new (fGrammarPoolMemoryManager) XSDLocator();
            aLocator->setValues(fStringPool->getValueForId(fStringPool->addOrFind(fSchemaInfo->getCurrentSchemaURL())),
                                0, ((XSDElementNSImpl*) elem)->getLineNo(),
                                ((XSDElementNSImpl*) elem)->getColumnNo());
            typeInfo->setLocator(aLocator);
        }
    }

    fCurrentTypeNameStack->addElement(typeNameIndex);
    ComplexTypeInfo* saveTypeInfo = fCurrentComplexType;
    fCurrentComplexType = typeInfo;

    // ------------------------------------------------------------------
    // First, handle any ANNOTATION declaration and get next child
    // ------------------------------------------------------------------
    DOMElement* child = checkContent(elem, XUtil::getFirstChildElement(elem), true, !preProcessFlag);

    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);

    // ------------------------------------------------------------------
    // Process the content of the complex type declaration
    // ------------------------------------------------------------------
    try {

        const XMLCh* mixedVal = getElementAttValue(elem,SchemaSymbols::fgATT_MIXED, DatatypeValidator::Boolean);
        bool isMixed = false;

        if ((mixedVal && *mixedVal)
            && (XMLString::equals(SchemaSymbols::fgATTVAL_TRUE, mixedVal)
                || XMLString::equals(fgValueOne, mixedVal))) {
            isMixed = true;
        }

        if (child == 0) {
            // EMPTY complexType with complexContent
            processComplexContent(elem, name, child, typeInfo, 0, isMixed);
        }
        else {

            const XMLCh* childName = child->getLocalName();

            if (XMLString::equals(childName, SchemaSymbols::fgELT_SIMPLECONTENT)) {

                // SIMPLE CONTENT element
                traverseSimpleContentDecl(name, fullName, child, typeInfo, &janAnnot);

                if (XUtil::getNextSiblingElement(child) != 0) {
                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildFollowingSimpleContent);
                }
            }
            else if (XMLString::equals(childName, SchemaSymbols::fgELT_COMPLEXCONTENT)) {

                // COMPLEX CONTENT element
                traverseComplexContentDecl(name, child, typeInfo, isMixed, &janAnnot);

                if (XUtil::getNextSiblingElement(child) != 0) {
                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildFollowingConplexContent);
                }
            }
            else if (fCurrentGroupInfo) {
                typeInfo->setPreprocessed(true);
            }
            else {
                // We must have ....
                // GROUP, ALL, SEQUENCE or CHOICE, followed by optional attributes
                // Note that it's possible that only attributes are specified.
                processComplexContent(elem, name, child, typeInfo, 0, isMixed);
            }
        }
    }
    catch(const TraverseSchema::ExceptionCodes aCode) {
        if (aCode == TraverseSchema::InvalidComplexTypeInfo)
            defaultComplexTypeInfo(typeInfo);
        else if (aCode == TraverseSchema::RecursingElement)
            typeInfo->setPreprocessed();
    }

    // ------------------------------------------------------------------
    // Finish the setup of the typeInfo
    // ------------------------------------------------------------------
    if (!preProcessFlag) {

        const XMLCh* abstractAttVal = getElementAttValue(elem, SchemaSymbols::fgATT_ABSTRACT, DatatypeValidator::Boolean);
        int blockSet = parseBlockSet(elem, C_Block);
        int finalSet = parseFinalSet(elem, EC_Final);

        typeInfo->setBlockSet(blockSet);
        typeInfo->setFinalSet(finalSet);

        if ((abstractAttVal && *abstractAttVal)
            && (XMLString::equals(abstractAttVal, SchemaSymbols::fgATTVAL_TRUE)
                || XMLString::equals(abstractAttVal, fgValueOne))) {
            typeInfo->setAbstract(true);
        }
        else {
            typeInfo->setAbstract(false);
        }
    }

    // Store Annotation
    if (!janAnnot.isDataNull())
        fSchemaGrammar->putAnnotation(typeInfo, janAnnot.release());

    // ------------------------------------------------------------------
    // Before exiting, restore the scope, mainly for nested anonymous types
    // ------------------------------------------------------------------
    popCurrentTypeNameStack();
    fCircularCheckIndex = previousCircularCheckIndex;
    fCurrentScope = previousScope;
    fCurrentComplexType = saveTypeInfo;

    return typeNameIndex;
}

/**
  * Traverse Group Declaration.
  *
  * <group
  *         id = ID
  *         maxOccurs = string
  *         minOccurs = nonNegativeInteger
  *         name = NCName
  *         ref = QName>
  *   Content: (annotation? , (all | choice | sequence)?)
  * <group/>
  *
  */
XercesGroupInfo*
TraverseSchema::traverseGroupDecl(const DOMElement* const elem,
                                  const bool topLevel) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    const XMLCh* name = getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    const XMLCh* ref = getElementAttValue(elem, SchemaSymbols::fgATT_REF, DatatypeValidator::QName);
    bool         nameEmpty = (!name || !*name);
    bool         refEmpty = (!ref || !*ref);

    if (nameEmpty && topLevel) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameGlobalElement,
                          SchemaSymbols::fgELT_GROUP);
        return 0;
    }

    if (nameEmpty && refEmpty) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameRefGroup);
        return 0;
    }

    // ------------------------------------------------------------------
    // Check attributes
    // ------------------------------------------------------------------
    unsigned short scope = (topLevel) ? GeneralAttributeCheck::E_GroupGlobal
                                      : GeneralAttributeCheck::E_GroupRef;
    fAttributeCheck.checkAttributes(elem, scope, this, topLevel, fNonXSAttList);

    // ------------------------------------------------------------------
    // Handle "ref="
    // ------------------------------------------------------------------
    if (!topLevel) {

        if (refEmpty) {
            return 0;
        }

        return processGroupRef(elem, ref);
    }

    // name must be a valid NCName
    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_GROUP, name);
        return 0;
    }

    fBuffer.set(fTargetNSURIString);
    fBuffer.append(chComma);
    fBuffer.append(name);

    unsigned int nameIndex = fStringPool->addOrFind(fBuffer.getRawBuffer());
    const XMLCh* fullName = fStringPool->getValueForId(nameIndex);
    XercesGroupInfo* groupInfo = fGroupRegistry->get(fullName);

    if (groupInfo) {
        return groupInfo;
    }

    // ------------------------------------------------------------------
    // Check for annotations
    // ------------------------------------------------------------------
    DOMElement* content = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);
    // ------------------------------------------------------------------
    // Process contents of global groups
    // ------------------------------------------------------------------
    unsigned int saveScope = fCurrentScope;
    Janitor<ContentSpecNode> specNode(0);
    XercesGroupInfo* saveGroupInfo = fCurrentGroupInfo;

    Janitor<XercesGroupInfo>    newGroupInfoJan(new (fGrammarPoolMemoryManager) XercesGroupInfo(
        fStringPool->addOrFind(name), fTargetNSURI, fGrammarPoolMemoryManager));
    fCurrentGroupStack->addElement(nameIndex);
    XercesGroupInfo* const newGroupInfo = newGroupInfoJan.get();
    fCurrentGroupInfo = newGroupInfo;

    fCurrentScope = fScopeCount++;
    fCurrentGroupInfo->setScope(fCurrentScope);

    if (content == 0) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::GroupContentError, name);
    }
    else {

        if (content->getAttributeNode(SchemaSymbols::fgATT_MINOCCURS) != 0
            || content->getAttributeNode(SchemaSymbols::fgATT_MAXOCCURS) != 0) {
            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::MinMaxOnGroupChild);
        }

        bool illegalChild = false;
        const XMLCh* childName = content->getLocalName();
        bool hasChild;


        if (XMLString::equals(childName, SchemaSymbols::fgELT_SEQUENCE)) {
            specNode.reset(traverseChoiceSequence(content, ContentSpecNode::Sequence, hasChild));
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_CHOICE)) {
            specNode.reset(traverseChoiceSequence(content, ContentSpecNode::Choice, hasChild));
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_ALL)) {
            specNode.reset(traverseAll(content, hasChild));
        }
        else {
            illegalChild = true;
        }

        if (illegalChild || XUtil::getNextSiblingElement(content) != 0) {
            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::GroupContentError, name);
        }

        // copy local elements to complex type if it exists
        if (fCurrentComplexType)
           processElements(elem, fCurrentGroupInfo, fCurrentComplexType);
    }

    // ------------------------------------------------------------------
    // Set groupInfo and pop group name from stack
    // ------------------------------------------------------------------
    XMLSize_t stackSize = fCurrentGroupStack->size();

    if (stackSize != 0) {
        fCurrentGroupStack->removeElementAt(stackSize - 1);
    }

    fCurrentGroupInfo->setContentSpec(specNode.release());
    fGroupRegistry->put((void*) fullName, fCurrentGroupInfo);
    newGroupInfoJan.release();
    fCurrentGroupInfo = saveGroupInfo;
    fCurrentScope = saveScope;

    // Store Annotation
    if (!janAnnot.isDataNull()) {
        fSchemaGrammar->putAnnotation(newGroupInfo, janAnnot.release());
    }

    if (fFullConstraintChecking) {

        XSDLocator* aLocator = new (fGrammarPoolMemoryManager) XSDLocator();

        newGroupInfo->setLocator(aLocator);
        aLocator->setValues(fStringPool->getValueForId(fStringPool->addOrFind(fSchemaInfo->getCurrentSchemaURL())),
                            0, ((XSDElementNSImpl*) elem)->getLineNo(),
                            ((XSDElementNSImpl*) elem)->getColumnNo());

        if (fRedefineComponents && fRedefineComponents->get(SchemaSymbols::fgELT_GROUP, nameIndex))
        {

            fBuffer.set(fullName);
            fBuffer.append(SchemaSymbols::fgRedefIdentifier);
            unsigned int rdfNameIndex = fStringPool->addOrFind(fBuffer.getRawBuffer());

            if (fCurrentGroupStack->containsElement(rdfNameIndex))
            {
                reportSchemaError(aLocator, XMLUni::fgXMLErrDomain, XMLErrs::NoCircularDefinition, name);
            }
            else
            {
                XercesGroupInfo* baseGroup = fGroupRegistry->get(fBuffer.getRawBuffer());
                if (baseGroup)
                {
                    newGroupInfo->setBaseGroup(baseGroup);
                }
                else
                {
                    fBuffer.set(name);
                    fBuffer.append(SchemaSymbols::fgRedefIdentifier);
                    SchemaInfo* saveInfo  = fSchemaInfo;
                    DOMElement* groupElem = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_Group,
                        SchemaSymbols::fgELT_GROUP, fBuffer.getRawBuffer(), &fSchemaInfo);

                    if (groupElem != 0) {
                        baseGroup = traverseGroupDecl(groupElem);
                        newGroupInfo->setBaseGroup(baseGroup);
                        fSchemaInfo = saveInfo;
                    }
                    else
                    {
                        reportSchemaError(aLocator, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNotFound,
                        SchemaSymbols::fgELT_GROUP, fTargetNSURIString, fBuffer.getRawBuffer());
                    }
                }
            }
        }
    }

    return newGroupInfo;
}


/**
  * Traverse attributeGroup Declaration.
  *
  * <attributeGroup
  *         id = ID
  *         name = NCName
  *         ref = QName>
  *   Content: (annotation? , (attribute|attributeGroup)*, anyAttribute?)
  * <attributeGroup/>
  *
  */
XercesAttGroupInfo*
TraverseSchema::traverseAttributeGroupDecl(const DOMElement* const elem,
                                           ComplexTypeInfo* const typeInfo,
                                           const bool topLevel) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    const XMLCh* name = getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    const XMLCh* ref = getElementAttValue(elem, SchemaSymbols::fgATT_REF, DatatypeValidator::QName);
    bool         nameEmpty = (!name || !*name) ? true : false;
    bool         refEmpty = (!ref || !*ref) ? true : false;

    if (nameEmpty && topLevel) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameGlobalElement,
            SchemaSymbols::fgELT_ATTRIBUTEGROUP);
        return 0;
    }

    if (nameEmpty && refEmpty) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameRefAttGroup);
        return 0;
    }

    // ------------------------------------------------------------------
    // Check attributes
    // ------------------------------------------------------------------
    unsigned short scope = (topLevel) ? GeneralAttributeCheck::E_AttributeGroupGlobal
                                      : GeneralAttributeCheck::E_AttributeGroupRef;
    fAttributeCheck.checkAttributes(elem, scope, this, topLevel, fNonXSAttList);

    // ------------------------------------------------------------------
    // Handle "ref="
    // ------------------------------------------------------------------
    XercesAttGroupInfo* attGroupInfo;
    Janitor<XercesAttGroupInfo> janAttGroupInfo(0);
    if (!topLevel) {

        if (refEmpty) {
            return 0;
        }

        attGroupInfo = processAttributeGroupRef(elem, ref, typeInfo);
    }
    else
    {
        // name must be a valid NCName
        if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                              SchemaSymbols::fgELT_ATTRIBUTEGROUP, name);
            return 0;
        }

        // Check for annotations
        DOMElement* content = checkContent(elem, XUtil::getFirstChildElement(elem), true);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        }
        Janitor<XSAnnotation> janAnnot(fAnnotation);

        // Process contents of global attributeGroups
        XercesAttGroupInfo* saveAttGroupInfo = fCurrentAttGroupInfo;
        janAttGroupInfo.reset(new (fGrammarPoolMemoryManager) XercesAttGroupInfo(
            fStringPool->addOrFind(name), fTargetNSURI, fGrammarPoolMemoryManager));

        fDeclStack->addElement(elem);
        fCurrentAttGroupInfo = janAttGroupInfo.get();

        for (; content !=0; content = XUtil::getNextSiblingElement(content)) {

            if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_ATTRIBUTE)) {
                traverseAttributeDecl(content, typeInfo);
            }
            else if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_ATTRIBUTEGROUP)) {
                traverseAttributeGroupDecl(content, typeInfo);
            }
            else {
                break;
            }
        }

        if (content != 0) {

            if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_ANYATTRIBUTE)) {

                SchemaAttDef* anyAtt = traverseAnyAttribute(content);

                if (anyAtt) {
                    fCurrentAttGroupInfo->addAnyAttDef(anyAtt);
                }

                if (XUtil::getNextSiblingElement(content) != 0) {
                    reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::AttGroupContentError, name);
                }
            }
            else {
                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::AttGroupContentError, name);
            }
        }

        // Pop declaration
        fDeclStack->removeElementAt(fDeclStack->size() - 1);

        fAttGroupRegistry->put((void*) fStringPool->getValueForId(fStringPool->addOrFind(name)), janAttGroupInfo.get());
        // Restore old attGroupInfo
        attGroupInfo = janAttGroupInfo.release();
        fCurrentAttGroupInfo = saveAttGroupInfo;

        // Check Attribute Derivation Restriction OK
        fBuffer.set(fTargetNSURIString);
        fBuffer.append(chComma);
        fBuffer.append(name);

        unsigned int nameIndex = fStringPool->addOrFind(fBuffer.getRawBuffer());

        if (fRedefineComponents && fRedefineComponents->get(SchemaSymbols::fgELT_ATTRIBUTEGROUP, nameIndex)) {

            fBuffer.set(name);
            fBuffer.append(SchemaSymbols::fgRedefIdentifier);
            XercesAttGroupInfo* baseAttGroupInfo = fAttGroupRegistry->get(fBuffer.getRawBuffer());

            if (baseAttGroupInfo)
                checkAttDerivationOK(elem, baseAttGroupInfo, attGroupInfo);
        }

        // Store annotation
        if (!janAnnot.isDataNull())
            fSchemaGrammar->putAnnotation(attGroupInfo, janAnnot.release());
    }

    // calculate complete wildcard if necessary
    if (attGroupInfo)
    {
        XMLSize_t anyAttCount = attGroupInfo->anyAttributeCount();
        if (anyAttCount && !attGroupInfo->getCompleteWildCard())
        {
            SchemaAttDef* attGroupWildCard =  new (fGrammarPoolMemoryManager)
                SchemaAttDef(attGroupInfo->anyAttributeAt(0));

            for (XMLSize_t k= 1; k < anyAttCount; k++)
                attWildCardIntersection(attGroupWildCard, attGroupInfo->anyAttributeAt(k));

            attGroupInfo->setCompleteWildCard(attGroupWildCard);
        }
    }

    return attGroupInfo;
}


inline XercesAttGroupInfo*
TraverseSchema::traverseAttributeGroupDeclNS(const DOMElement* const elem,
                                             const XMLCh* const uriStr,
                                             const XMLCh* const name) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // ------------------------------------------------------------------
    // Get grammar information
    // ------------------------------------------------------------------
    Grammar* aGrammar = fGrammarResolver->getGrammar(uriStr);

    if (!aGrammar || aGrammar->getGrammarType() != Grammar::SchemaGrammarType) {

        reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::GrammarNotFound, uriStr);
        return 0;
    }

    XercesAttGroupInfo* attGroupInfo = ((SchemaGrammar*)aGrammar)->getAttGroupInfoRegistry()->get(name);

    return attGroupInfo;
}

/**
  * Traverse Any declaration
  *
  *     <any
  *        id = ID
  *        maxOccurs = (nonNegativeInteger | unbounded)  : 1
  *        minOccurs = nonNegativeInteger : 1
  *        namespace = ((##any | ##other) | List of (anyURI |
  *                     (##targetNamespace | ##local)) )  : ##any
  *        processContents = (lax | skip | strict) : strict
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation?)
  *     </any>
  */
ContentSpecNode*
TraverseSchema::traverseAny(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Any, this, false, fNonXSAttList
    );

    // ------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // ------------------------------------------------------------------
    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);

    // ------------------------------------------------------------------
    // Get attributes
    // ------------------------------------------------------------------
    const XMLCh* const processContents = getElementAttValue(elem, SchemaSymbols::fgATT_PROCESSCONTENTS);
    const XMLCh* const nameSpace = getElementAttValue(elem, SchemaSymbols::fgATT_NAMESPACE);

    // ------------------------------------------------------------------
    // Set default node type based on 'processContents' value
    // ------------------------------------------------------------------
    ContentSpecNode::NodeTypes anyType = ContentSpecNode::Any;
    ContentSpecNode::NodeTypes anyLocalType = ContentSpecNode::Any_NS;
    ContentSpecNode::NodeTypes anyOtherType = ContentSpecNode::Any_Other;

    if ((processContents && *processContents)
        && !XMLString::equals(processContents, SchemaSymbols::fgATTVAL_STRICT)) {

        if (XMLString::equals(processContents, SchemaSymbols::fgATTVAL_LAX)) {

            anyType = ContentSpecNode::Any_Lax;
            anyOtherType = ContentSpecNode::Any_Other_Lax;
            anyLocalType = ContentSpecNode::Any_NS_Lax;
        }
        else if (XMLString::equals(processContents, SchemaSymbols::fgATTVAL_SKIP)) {

            anyType = ContentSpecNode::Any_Skip;
            anyOtherType = ContentSpecNode::Any_Other_Skip;
            anyLocalType = ContentSpecNode::Any_NS_Skip;
        }
    }

    // ------------------------------------------------------------------
    // Process 'namespace' attribute
    // ------------------------------------------------------------------
    ContentSpecNode* retSpecNode = 0;

    if ((!nameSpace || !*nameSpace)
        || XMLString::equals(nameSpace, SchemaSymbols::fgATTVAL_TWOPOUNDANY)) {
        retSpecNode = new (fGrammarPoolMemoryManager) ContentSpecNode
        (
            new (fGrammarPoolMemoryManager) QName
            (
                XMLUni::fgZeroLenString
                , XMLUni::fgZeroLenString
                , fEmptyNamespaceURI
                , fGrammarPoolMemoryManager
            )
            , false
            , fGrammarPoolMemoryManager
        );
        retSpecNode->setType(anyType);
    }
    else if (XMLString::equals(nameSpace, SchemaSymbols::fgATTVAL_TWOPOUNDOTHER)) {
        retSpecNode = new (fGrammarPoolMemoryManager) ContentSpecNode
        (
            new (fGrammarPoolMemoryManager) QName
            (
                XMLUni::fgZeroLenString
                , XMLUni::fgZeroLenString
                , fTargetNSURI, fGrammarPoolMemoryManager
            )
            , false
            , fGrammarPoolMemoryManager
        );
        retSpecNode->setType(anyOtherType);
    }
    else {

        XMLStringTokenizer nameSpaceTokens(nameSpace, fMemoryManager);
        ValueVectorOf<unsigned int> uriList(8, fGrammarPoolMemoryManager);
        Janitor<ContentSpecNode>    firstNode(0);
        Janitor<ContentSpecNode>    secondNode(0);
        DatatypeValidator* anyURIDV = fDatatypeRegistry->getDatatypeValidator(SchemaSymbols::fgDT_ANYURI);

        while (nameSpaceTokens.hasMoreTokens()) {

            const XMLCh* tokenElem = nameSpaceTokens.nextToken();
            int uriIndex = fEmptyNamespaceURI;

            if (!XMLString::equals(tokenElem,SchemaSymbols::fgATTVAL_TWOPOUNDLOCAL)) { // not ##local

                if (XMLString::equals(tokenElem,SchemaSymbols::fgATTVAL_TWOPOUNDTRAGETNAMESPACE)) {
                    uriIndex = fTargetNSURI;
                }
                else {
                    try {
                        anyURIDV->validate(tokenElem
                                         , fSchemaInfo->getValidationContext()
                                         , fMemoryManager);
                    }
                    catch(const XMLException& excep) {
                        reportSchemaError(elem, excep);
                    }
                    uriIndex = fURIStringPool->addOrFind(tokenElem);
                }
            }

            if (uriList.containsElement(uriIndex)) {
                continue;
            }

            uriList.addElement(uriIndex);

            firstNode.release();
            firstNode.reset( new (fGrammarPoolMemoryManager) ContentSpecNode
            (
                new (fGrammarPoolMemoryManager) QName
                (
                    XMLUni::fgZeroLenString
                    , XMLUni::fgZeroLenString
                    , uriIndex, fGrammarPoolMemoryManager
                )
                , false
                , fGrammarPoolMemoryManager
            ));
            firstNode.get()->setType(anyLocalType);

            if (secondNode.get() == 0) {
                secondNode.reset(firstNode.release());
            }
            else {
                ContentSpecNode* newNode = new (fGrammarPoolMemoryManager) ContentSpecNode
                (
                    ContentSpecNode::Any_NS_Choice
                    , secondNode.get()
                    , firstNode.get()
                    , true
                    , true
                    , fGrammarPoolMemoryManager
                );
                secondNode.release();
                secondNode.reset(newNode);
                firstNode.release();
            }
        }
        firstNode.release();
        retSpecNode = secondNode.release();
    }

    // Store annotation
    if (retSpecNode && !janAnnot.isDataNull())
        fSchemaGrammar->putAnnotation(retSpecNode, janAnnot.release());

    return retSpecNode;
}


/**
  *  Traverse all
  *
  *     <all
  *        id = ID
  *        maxOccurs = 1 : 1
  *        minOccurs = (0 | 1) : 1
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation?, element*)
  *     </all>
  */
ContentSpecNode*
TraverseSchema::traverseAll(const DOMElement* const elem, bool& hasChildren) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);
    hasChildren = false;

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_All, this, false, fNonXSAttList
    );

    // -----------------------------------------------------------------------
    // Process contents
    // -----------------------------------------------------------------------
    DOMElement* child = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);

    if (child == 0) {
        return 0;
    }

    Janitor<ContentSpecNode>    left(0);
    Janitor<ContentSpecNode>    right(0);
    Janitor<ContentSpecNode>     contentSpecNode(0);
    bool hadContent = false;

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {
        hasChildren = true;
        contentSpecNode.release();
        const XMLCh* childName = child->getLocalName();

        if (XMLString::equals(childName, SchemaSymbols::fgELT_ELEMENT)) {

            SchemaElementDecl* elemDecl = traverseElementDecl(child);

            if (!elemDecl)
                continue;

            contentSpecNode.reset(new (fGrammarPoolMemoryManager) ContentSpecNode
            (
                elemDecl
                , fGrammarPoolMemoryManager
            ));
            checkMinMax(contentSpecNode.get(), child, All_Element);
        }
        else {

            reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::AllContentError, childName);
            continue;
        }

        hadContent = true;

        if (!left.get()) {
            left.reset(contentSpecNode.release());
        }
        else if (!right.get()) {
            right.reset(contentSpecNode.release());
        }
        else {
            ContentSpecNode* newNode = new (fGrammarPoolMemoryManager) ContentSpecNode
            (
                ContentSpecNode::All
                , left.get()
                , right.get()
                , true
                , true
                , fGrammarPoolMemoryManager
            );
            left.release();
            left.reset(newNode);
            right.release();
            right.reset(contentSpecNode.release());
        }
    }
    contentSpecNode.release();

    if (hadContent) {
        ContentSpecNode* newNode = new (fGrammarPoolMemoryManager) ContentSpecNode
        (
            ContentSpecNode::All
            , left.get()
            , right.get()
            , true
            , true
            , fGrammarPoolMemoryManager
        );

        left.release();
        left.reset(newNode);

        if (!janAnnot.isDataNull())
            fSchemaGrammar->putAnnotation(left.get(), janAnnot.release());
    }
    right.release();
    return left.release();
}

/**
  * Traverses Schema attribute declaration.
  *
  *       <attribute
  *         fixed = string
  *         default = string
  *         form = qualified | unqualified
  *         id = ID
  *         name = NCName
  *         ref = QName
  *         type = QName
  *         use = optional | prohibited | required : optional
  >
  *         Content: (annotation? , simpleType?)
  *       <attribute/>
  *
  * @param elem:        the declaration of the attribute under consideration
  *
  * @param typeInfo:    Contains the complex type info of the element to which
  *                     the attribute declaration is attached.
  *
  */
void TraverseSchema::traverseAttributeDecl(const DOMElement* const elem,
                                           ComplexTypeInfo* const typeInfo,
                                           const bool topLevel) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    const XMLCh*   name = getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    const XMLCh*   ref = getElementAttValue(elem, SchemaSymbols::fgATT_REF, DatatypeValidator::QName);
    bool           nameEmpty = (!name || !*name);
    bool           refEmpty = (!ref || !*ref);

    if (nameEmpty && refEmpty) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameRefAttribute);
        return;
    }

    if (topLevel && nameEmpty) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TopLevelNoNameAttribute);
        return;
    }

    // ------------------------------------------------------------------
    // Check attributes
    // ------------------------------------------------------------------
    unsigned short scope = (topLevel)
        ? GeneralAttributeCheck::E_AttributeGlobal
        : (refEmpty) ? GeneralAttributeCheck::E_AttributeLocal
                     : GeneralAttributeCheck::E_AttributeRef;

    fAttributeCheck.checkAttributes(elem, scope, this, topLevel, fNonXSAttList);

    const XMLCh* defaultVal = getElementAttValue(elem, SchemaSymbols::fgATT_DEFAULT);
    const XMLCh* fixedVal = getElementAttValue(elem, SchemaSymbols::fgATT_FIXED);
    const XMLCh* useVal = getElementAttValue(elem, SchemaSymbols::fgATT_USE);
    const XMLCh* attForm = getElementAttValue(elem, SchemaSymbols::fgATT_FORM);
    const XMLCh* dvType = getElementAttValue(elem, SchemaSymbols::fgATT_TYPE, DatatypeValidator::QName);
    DOMElement* simpleType = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    Janitor<XSAnnotation> janAnnot(fAnnotation);
    bool         badContent = false;

    while (simpleType != 0) {

        const XMLCh* contentName = simpleType->getLocalName();

        if (XMLString::equals(SchemaSymbols::fgELT_SIMPLETYPE, contentName)) {

            if (XUtil::getNextSiblingElement(simpleType) != 0) {
                badContent = true;
            }
            break;
        }

        badContent = true;
        simpleType = XUtil::getNextSiblingElement(simpleType);
    }

    if (badContent) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidAttributeContent,
                          (name) ? name : ref);
    }

    if (defaultVal) {

        if (fixedVal) {

            fixedVal = 0;
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttributeDefaultFixedValue,
                              (name) ? name : ref);
        }

        if ((useVal && *useVal)
            && !XMLString::equals(useVal, SchemaSymbols::fgATTVAL_OPTIONAL)) {

            useVal = 0;
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NotOptionalDefaultAttValue,
                              (name) ? name : ref);
        }
    }

    // processing ref
    if (!refEmpty && !topLevel) {

        // Check ref representation OK - 3.2.3::3.2
        if (attForm || dvType || (simpleType != 0)) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttributeRefContentError,
                              (name) ? name : ref);
        }

        processAttributeDeclRef(elem, typeInfo, ref, useVal, defaultVal, fixedVal);
        return;
    }

    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        janAnnot.reset(fAnnotation);
    }

    // processing 'name'
    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))
        || XMLString::equals(name, XMLUni::fgXMLNSString)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName, SchemaSymbols::fgELT_ATTRIBUTE, name);
        return;
    }

    // Check for duplicate declaration
    const XMLCh* qualified = SchemaSymbols::fgATTVAL_QUALIFIED;
    int uriIndex = fEmptyNamespaceURI;

    if ((fTargetNSURIString && *fTargetNSURIString)
        && (topLevel || XMLString::equals(attForm, qualified)
            || ((fSchemaInfo->getElemAttrDefaultQualified() & Attr_Def_Qualified)
                && (!attForm || !*attForm)))) {
        uriIndex = fTargetNSURI;
    }

    // make sure that attribute namespace is not xsi uri
    if (XMLString::equals(fTargetNSURIString, SchemaSymbols::fgURI_XSI)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidAttTNS, name);
        return;
    }

    if (typeInfo && typeInfo->getAttDef(name, uriIndex) != 0) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAttribute, name);
        return;
    }
    else if (fCurrentAttGroupInfo && fCurrentAttGroupInfo->containsAttribute(name, uriIndex)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAttribute, name);
        return;
    }

    DatatypeValidator*  dv = 0;
    XMLAttDef::AttTypes attType = XMLAttDef::Simple;
    SchemaInfo* saveInfo = fSchemaInfo;

    if (simpleType != 0) {

        if (dvType && *dvType) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttributeWithTypeAndSimpleType, name);
        }

        dv = traverseSimpleTypeDecl(simpleType, false);
    }
    else if (!dvType || !*dvType) {
        dv = fDatatypeRegistry->getDatatypeValidator(SchemaSymbols::fgDT_ANYSIMPLETYPE);
    }
    else {

        checkEnumerationRequiredNotation(elem, name, dvType);

        const XMLCh* localPart = getLocalPart(dvType);
        const XMLCh* prefix = getPrefix(dvType);
        const XMLCh* typeURI = resolvePrefixToURI(elem, prefix);
        DatatypeValidator*  dvBack = 0;

        if (XMLString::equals(typeURI, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {
            dv = fDatatypeRegistry->getDatatypeValidator(localPart);
            dvBack = dv;
        }
        else { //isn't of the schema for schemas namespace...

            dv = getAttrDatatypeValidatorNS(elem, localPart, typeURI);
            dvBack = dv;

            while(dv != 0 && !XMLString::equals(dv->getTypeUri(), SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {
                dv = dv->getBaseValidator();
            }

            if(dv)
                localPart = dv->getTypeLocalName();
        }

        if(dv) {
            if (XMLString::equals(localPart,XMLUni::fgIDString)) {
                attType = XMLAttDef::ID;
            }
            else if (XMLString::equals(localPart,XMLUni::fgIDRefString)) {
                attType = XMLAttDef::IDRef;
            }
            else if (XMLString::equals(localPart,XMLUni::fgIDRefsString)) {
                attType = XMLAttDef::IDRefs;
            }
            else if (XMLString::equals(localPart,XMLUni::fgEntityString)) {
                attType = XMLAttDef::Entity;
            }
            else if (XMLString::equals(localPart,XMLUni::fgEntitiesString)) {
                attType = XMLAttDef::Entities;
            }
            else if (XMLString::equals(localPart,XMLUni::fgNmTokenString)) {
                attType = XMLAttDef::NmToken;
            }
            else if (XMLString::equals(localPart,XMLUni::fgNmTokensString)) {
                attType = XMLAttDef::NmTokens;
            }
            else if (XMLString::equals(localPart,XMLUni::fgNotationString)) {
                attType = XMLAttDef::Notation;
            }
            else {
                attType = XMLAttDef::Simple;
            }
        }
        else
            attType = XMLAttDef::Simple;

        dv = dvBack;

        if (!dv) {
            reportSchemaError
            (
                elem
                , XMLUni::fgXMLErrDomain
                , XMLErrs::AttributeSimpleTypeNotFound
                , typeURI
                , localPart
                , name
            );
        }
    }

    // restore schema information, if necessary
    fSchemaInfo = saveInfo;

    bool required = false;
    bool prohibited = false;

    if (useVal && *useVal) {

        if (XMLString::equals(useVal, SchemaSymbols::fgATTVAL_REQUIRED)) {
            required = true;
        }
        else if (XMLString::equals(useVal, SchemaSymbols::fgATTVAL_PROHIBITED)) {
            prohibited = true;
        }
    }

    // validate fixed/default values
    const XMLCh* valueToCheck = defaultVal ? defaultVal : fixedVal;
    bool  ofTypeID = (dv && dv->getType() == DatatypeValidator::ID);

    if (attType == XMLAttDef::Simple && dv && valueToCheck) {

        short wsFacet = dv->getWSFacet();
        if((wsFacet == DatatypeValidator::REPLACE && !XMLString::isWSReplaced(valueToCheck)) ||
           (wsFacet == DatatypeValidator::COLLAPSE && !XMLString::isWSCollapsed(valueToCheck)))
        {
            XMLCh* normalizedValue=XMLString::replicate(valueToCheck, fMemoryManager);
            ArrayJanitor<XMLCh> tempURIName(normalizedValue, fMemoryManager);
            if(wsFacet == DatatypeValidator::REPLACE)
                XMLString::replaceWS(normalizedValue, fMemoryManager);
            else if(wsFacet == DatatypeValidator::COLLAPSE)
                XMLString::collapseWS(normalizedValue, fMemoryManager);
            valueToCheck=fStringPool->getValueForId(fStringPool->addOrFind(normalizedValue));
        }
        try {
            dv->validate(valueToCheck
                      , fSchemaInfo->getValidationContext()
                      , fMemoryManager);
        }
        catch (const XMLException& excep) {
            reportSchemaError(elem, excep);
        }
        catch(const OutOfMemoryException&)
        {
            throw;
        }
        catch(...) {
            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::DatatypeValidationFailure, valueToCheck);
        }
    }
    else if((attType == XMLAttDef::NmTokens || attType==XMLAttDef::IDRefs || attType==XMLAttDef::Entities) &&
            valueToCheck && !XMLString::isWSCollapsed(valueToCheck))
    {
        XMLCh* normalizedValue=XMLString::replicate(valueToCheck, fMemoryManager);
        ArrayJanitor<XMLCh> tempURIName(normalizedValue, fMemoryManager);
        XMLString::collapseWS(normalizedValue, fMemoryManager);
        valueToCheck=fStringPool->getValueForId(fStringPool->addOrFind(normalizedValue));
    }

    if (ofTypeID && valueToCheck) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttDeclPropCorrect3, name);
    }

    // check for multiple attributes with type derived from ID
    if (!topLevel && ofTypeID) {

        if (fCurrentAttGroupInfo) {

            if (fCurrentAttGroupInfo->containsTypeWithId()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttGrpPropCorrect3, name);
                return;
            }

            fCurrentAttGroupInfo->setTypeWithId(true);
        }
        else {

            if (typeInfo->containsAttWithTypeId()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttDeclPropCorrect5, name);
                return;
            }

            typeInfo->setAttWithTypeId(true);
        }
    }

    // create SchemaAttDef
    SchemaAttDef* attDef = new (fGrammarPoolMemoryManager) SchemaAttDef
    (
        XMLUni::fgZeroLenString
        , name
        , uriIndex
        , attType
        , XMLAttDef::Implied
        , fGrammarPoolMemoryManager
    );

    attDef->setDatatypeValidator(dv);

    if (prohibited) {
        attDef->setDefaultType(XMLAttDef::Prohibited);
    }
    else if (required) {

        if (fixedVal) {
            attDef->setDefaultType(XMLAttDef::Required_And_Fixed);
        }
        else {
            attDef->setDefaultType(XMLAttDef::Required);
        }
    }
    else {

        if (fixedVal) {
            attDef->setDefaultType(XMLAttDef::Fixed);
        }
        else if (defaultVal) {
            attDef->setDefaultType(XMLAttDef::Default);
        }
    }

    if (valueToCheck) {
        attDef->setValue(valueToCheck);
    }

    if (!janAnnot.isDataNull())
        fSchemaGrammar->putAnnotation(attDef, janAnnot.release());

    if (topLevel)
    {
        fAttributeDeclRegistry->put((void*) fStringPool->getValueForId(fStringPool->addOrFind(name)), attDef);
        attDef->setPSVIScope(PSVIDefs::SCP_GLOBAL);
    }
    else
    {
        if (typeInfo)
        {
            typeInfo->addAttDef(attDef);
            if (!fCurrentAttGroupInfo)
                attDef->setPSVIScope(PSVIDefs::SCP_LOCAL);
        }

        if (fCurrentAttGroupInfo) {
            fCurrentAttGroupInfo->addAttDef(attDef, (typeInfo != 0));
        }
    }
}


/**
  * Traverses Schema element declaration.
  *
  *       <element
  *            abstract = boolean : false
  *            block = (#all | List of (substitution | extension | restriction
  *                                     | list | union))
  *            default = string
  *            final = (#all | List of (extension | restriction))
  *            fixed = string
  *            form = (qualified | unqualified)
  *            id = ID
  *            maxOccurs = (nonNegativeInteger | unbounded)  : 1
  *            minOccurs = nonNegativeInteger : 1
  *            name = NCName
  *            nillable = boolean : false
  *            ref = QName
  *            substitutionGroup = QName
  *            type = QName
  *            Content: (annotation?, ((simpleType | complexType)?, (unique | key | keyref)*))
  *       </element>
  *
  * @param elem:  the declaration of the element under consideration
  */
SchemaElementDecl*
TraverseSchema::traverseElementDecl(const DOMElement* const elem,
                                    const bool topLevel)
{
    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // if local element and ref attribute exists
    if (!topLevel)
    {
        const XMLCh* refName = getElementAttValue(elem, SchemaSymbols::fgATT_REF, DatatypeValidator::QName);
        if (refName)
            return processElementDeclRef(elem, refName);
    }

    // check for empty name
    const XMLCh* name = getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    if (!name || !*name)
    {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameRefElement);
        return 0;
    }

    // make sure that name is a valid NCName
    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name)))
    {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain,
            XMLErrs::InvalidDeclarationName, SchemaSymbols::fgELT_ELEMENT, name);
        return 0;
    }

    // if element already exists, just return --- revisit, it should not happen
    if (topLevel)
    {
        SchemaElementDecl* retDecl = (SchemaElementDecl*) fSchemaGrammar->getElemDecl(fTargetNSURI, name, 0, Grammar::TOP_LEVEL_SCOPE);
        if (retDecl)
            return retDecl;
    }

    // Check attributes
    unsigned short scope = (topLevel) ? GeneralAttributeCheck::E_ElementGlobal
                                      : GeneralAttributeCheck::E_ElementLocal;

    fAttributeCheck.checkAttributes(elem, scope, this, topLevel, fNonXSAttList);

    // check annotation
    const DOMElement* content = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    // Put annotations on all elements for the situation where there is a group of
    // elements and not all have annotations.
    //if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    if (!fAnnotation && fScanner->getGenerateSyntheticAnnotations())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);

    // Create element decl
    bool isDuplicate = false;
    const XMLCh* valueConstraint = 0;
    SchemaElementDecl* elemDecl =
        createSchemaElementDecl(elem, name, isDuplicate, valueConstraint, topLevel);

    if (!isDuplicate) {

        fSchemaGrammar->putElemDecl(elemDecl);

        if (valueConstraint)
            elemDecl->setDefaultValue(valueConstraint);

        if (!janAnnot.isDataNull())
            fSchemaGrammar->putAnnotation(elemDecl, janAnnot.release());

        if (fCurrentComplexType &&
            elemDecl->getEnclosingScope() == fCurrentComplexType->getScopeDefined()) {
            fCurrentComplexType->addElement(elemDecl);
            elemDecl->setPSVIScope(PSVIDefs::SCP_LOCAL);
        }

        if (fCurrentGroupInfo &&
            elemDecl->getEnclosingScope() == fCurrentGroupInfo->getScope()) {
            fCurrentGroupInfo->addElement(elemDecl);
            elemDecl->setPSVIScope(PSVIDefs::SCP_ABSENT);
        }
    }
    else {
        if (fAnnotation) {
            XSAnnotation* xsAnnot = fSchemaGrammar->getAnnotation(elemDecl);
            if (!xsAnnot) {
                fSchemaGrammar->putAnnotation(elemDecl, janAnnot.release());
            }
            else {
                xsAnnot->setNext(janAnnot.release());
            }
        }
    }

    // Process children
    bool               anonymousType = false;
    ComplexTypeInfo*   typeInfo = 0;
    DatatypeValidator* validator = 0;

    if (content != 0)
    {
        const XMLCh* contentName = content->getLocalName();

        if (XMLString::equals(contentName, SchemaSymbols::fgELT_COMPLEXTYPE))
        {
            const XMLCh* temp = content->getAttribute(SchemaSymbols::fgATT_NAME);

            if (temp && *temp)
            {
                // REVISIT - we are bypassing the complex type declaration.
                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::AnonComplexTypeWithName, name);
            }
            else
            {
                typeInfo = checkForComplexTypeInfo(content);

                if (typeInfo)
                {
                    validator = typeInfo->getDatatypeValidator();

                    if (!isDuplicate) {

                        //Recursing element
                        if (typeInfo->getPreprocessed()) {

                            const XMLCh* typeInfoName = typeInfo->getTypeName();
                            fSchemaInfo->addRecursingType(content, typeInfoName + XMLString::indexOf(typeInfoName, chComma) + 1);
                        }
                    }
                }
            }

            anonymousType = true;
            content = XUtil::getNextSiblingElement(content);
        }
        else if (XMLString::equals(contentName, SchemaSymbols::fgELT_SIMPLETYPE))
        {
            const XMLCh* temp = content->getAttribute(SchemaSymbols::fgATT_NAME);
            if (temp && *temp)
                // REVISIT - we are bypassing the simple type declaration.
                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::AnonSimpleTypeWithName, name);
            else
                validator = checkForSimpleTypeValidator(content);

            anonymousType = true;
            content = XUtil::getNextSiblingElement(content);
        }

        // Check for identity constraints
        if (content != 0)
        {
            content = checkIdentityConstraintContent(content);
            if (content != 0)
                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::InvalidElementContent);
        }
    }

    // Handle 'type' attribute
    const XMLCh* typeStr = getElementAttValue(elem, SchemaSymbols::fgATT_TYPE, DatatypeValidator::QName);
    if (typeStr)
    {
        if (anonymousType)
        {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::ElementWithTypeAndAnonType, name);
        }
        else if (*typeStr)
        {
            const XMLCh* typeLocalPart = getLocalPart(typeStr);
            const XMLCh* typePrefix = getPrefix(typeStr);
            const XMLCh* typeURI = resolvePrefixToURI(elem, typePrefix);

            if (!XMLString::equals(typeURI, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
                || !XMLString::equals(typeLocalPart, SchemaSymbols::fgATTVAL_ANYTYPE))
            {
                checkEnumerationRequiredNotation(elem, name, typeStr);

                bool noErrorFound = true;
                const XMLCh* anotherSchemaURI = checkTypeFromAnotherSchema(elem, typeStr);

                // get complex type info
                typeInfo = getElementComplexTypeInfo(elem, typeStr, anotherSchemaURI);

                // get simple type validtor - if not a complex type
                if (typeInfo)
                    validator = typeInfo->getDatatypeValidator();
                else
                    validator = getElementTypeValidator(elem, typeStr, noErrorFound, anotherSchemaURI);
            }
        }
    }

    // check for duplicate elements with different types.
    if (isDuplicate)
    {
        DatatypeValidator* eltDV = elemDecl->getDatatypeValidator();
        ComplexTypeInfo*   eltTypeInfo = elemDecl->getComplexTypeInfo();

        if ( (eltTypeInfo != typeInfo) || (eltDV != validator))  {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateElementDeclaration, name);
        }
    }
    // Set element declararion type information
    else
    {
        elemDecl->setDatatypeValidator(validator);
        elemDecl->setComplexTypeInfo(typeInfo);

        if (validator)
            elemDecl->setModelType(SchemaElementDecl::Simple);
        else if (typeInfo)
            elemDecl->setModelType((SchemaElementDecl::ModelTypes)typeInfo->getContentType());

        if (topLevel) {

            // Handle the substitutionGroup
            const XMLCh* subsGroupName = getElementAttValue(elem, SchemaSymbols::fgATT_SUBSTITUTIONGROUP, DatatypeValidator::QName);
            if (subsGroupName && *subsGroupName)
                 processSubstitutionGroup(elem, elemDecl, typeInfo, validator, subsGroupName);
        }

        // process identity constraints
        DOMElement* ic = XUtil::getFirstChildElementNS(
            elem, fgIdentityConstraints, SchemaSymbols::fgURI_SCHEMAFORSCHEMA, 3);

        if (ic)
            processElemDeclIC(ic, elemDecl);
    }

    if (!typeInfo && !validator)
    {
        if (!isDuplicate)
        {
            elemDecl->setModelType(SchemaElementDecl::Any);
            elemDecl->setAttWildCard(
                new (fGrammarPoolMemoryManager) SchemaAttDef(
                    XMLUni::fgZeroLenString, XMLUni::fgZeroLenString,
                    fEmptyNamespaceURI, XMLAttDef::Any_Any,
                    XMLAttDef::ProcessContents_Lax, fGrammarPoolMemoryManager
                )
            );
        }
    }
    else if (valueConstraint)
    {
        if (!checkElemDeclValueConstraint(elem, elemDecl, valueConstraint, typeInfo, validator)
            && !isDuplicate)
        {
            int miscFlags = elemDecl->getMiscFlags();
            miscFlags &= ~ SchemaSymbols::XSD_FIXED;
            elemDecl->setDefaultValue(0);
            elemDecl->setMiscFlags(miscFlags);
        }
    }

    return elemDecl;
}

/**
  * Traverses Schema notation declaration.
  *
  *       <notation
  *            id = ID
  *            name = NCName
  *            public = token
  *            system = anyURI
  *            {any attributes with non-schema namespace . . .}>
  *            Content: (annotation?)
  *       </notation>
  *
  * @param elem:  the declaration of the element under consideration
  */
const XMLCh* TraverseSchema::traverseNotationDecl(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Notation, this, true, fNonXSAttList
    );

    // -----------------------------------------------------------------------
    // Process notation attributes/elements
    // -----------------------------------------------------------------------
    const XMLCh* name = getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    bool         nameEmpty = (!name || !*name) ? true : false;

    if (nameEmpty) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNameGlobalElement,
                          SchemaSymbols::fgELT_NOTATION);
        return 0;
    }

    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_NOTATION, name);
        return 0;
    }

    if (fNotationRegistry->containsKey(name, fTargetNSURI)) {
        return name;
    }

    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);

    const XMLCh* publicId = getElementAttValue(elem, SchemaSymbols::fgATT_PUBLIC);
    const XMLCh* systemId = getElementAttValue(elem, SchemaSymbols::fgATT_SYSTEM, DatatypeValidator::AnyURI);

    fNotationRegistry->put((void*) fStringPool->getValueForId(fStringPool->addOrFind(name)),
                           fTargetNSURI, 0);

    // for PSVI we need to store the notational decl
    XMLNotationDecl* decl = new (fGrammarPoolMemoryManager) XMLNotationDecl
        (
            name,
            publicId,
            systemId,
            0,
            fGrammarPoolMemoryManager
        );
    decl->setNameSpaceId(fTargetNSURI);
    fSchemaGrammar->putNotationDecl(decl);

    if (fAnnotation)
        fSchemaGrammar->putAnnotation(decl, fAnnotation);
    else if (fScanner->getGenerateSyntheticAnnotations() && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        fSchemaGrammar->putAnnotation(decl, fAnnotation);
    }
    return name;
}

const XMLCh* TraverseSchema::traverseNotationDecl(const DOMElement* const elem,
                                                  const XMLCh* const name,
                                                  const XMLCh* const uriStr) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    unsigned int uriId = fURIStringPool->addOrFind(uriStr);
    SchemaInfo*  saveInfo = fSchemaInfo;

    if (fTargetNSURI != (int) uriId) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(uriStr);

        if (!isImportingNS(uriId)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, uriStr);
            return 0;
        }

        Grammar* grammar = fGrammarResolver->getGrammar(uriStr);

        if (grammar == 0 || grammar->getGrammarType() != Grammar::SchemaGrammarType) {

            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::GrammarNotFound, uriStr);
            return 0;
        }

        SchemaInfo* impInfo = fSchemaInfo->getImportInfo(uriId);

        if (!impInfo || impInfo->getProcessed()) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, uriStr, name);
            return 0;
        }

        fSchemaInfo = impInfo;
        fTargetNSURI = fSchemaInfo->getTargetNSURI();
    }

    DOMElement* notationElem = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_Notation,
        SchemaSymbols::fgELT_NOTATION, name, &fSchemaInfo);

    if (notationElem == 0) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::Notation_DeclNotFound, uriStr, name);
        return 0;
    }

    const XMLCh* notationName = traverseNotationDecl(notationElem);

    fSchemaInfo = saveInfo;
    fTargetNSURI = fSchemaInfo->getTargetNSURI();

    return notationName;
}

/**
  * Traverses Schema list simple type declaration.
  *
  *       <list
  *            id = ID
  *            itemType = QName
  *            {any attributes with non-schema namespace . . .}>
  *            Content: (annotation?, simpleType?)
  *       </list>
  *
  */
DatatypeValidator*
TraverseSchema::traverseByList(const DOMElement* const rootElem,
                               const DOMElement* const contentElem,
                               const XMLCh* const typeName,
                               const XMLCh* const qualifiedName,
                               const int finalSet,
                               Janitor<XSAnnotation>* const janAnnot) {

    NamespaceScopeManager nsMgr(contentElem, fSchemaInfo, this);

    DatatypeValidator* baseValidator = 0;
    const XMLCh*       baseTypeName = getElementAttValue(contentElem, SchemaSymbols::fgATT_ITEMTYPE, DatatypeValidator::QName);

    fAttributeCheck.checkAttributes(
        contentElem, GeneralAttributeCheck::E_List, this, false, fNonXSAttList
    );

    const DOMElement* tempEl = XUtil::getNextSiblingElement(contentElem);
    if (tempEl != 0) {
        reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::SimpleTypeContentError, tempEl->getLocalName());
    }

    DOMElement*      content = 0;

    if (!baseTypeName || !*baseTypeName) { // must 'see' <simpleType>

        content = checkContent(rootElem, XUtil::getFirstChildElement(contentElem), false);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(contentElem, fNonXSAttList);
        }
        if (fAnnotation)
        {
            if (janAnnot->isDataNull())
                janAnnot->reset(fAnnotation);
            else
                janAnnot->get()->setNext(fAnnotation);
        }

        if (!content) {

            reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::ExpectedSimpleTypeInList, typeName);
            popCurrentTypeNameStack();
            return 0;
        }

        if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_SIMPLETYPE)) {
            baseValidator = checkForSimpleTypeValidator(content, SchemaSymbols::XSD_LIST);
        }
        else {

            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::ListUnionRestrictionError, typeName);
            popCurrentTypeNameStack();
            return 0;
        }

        content = XUtil::getNextSiblingElement(content);
    }
    else { // base was provided - get proper validator

        baseValidator = findDTValidator(contentElem, typeName, baseTypeName, SchemaSymbols::XSD_LIST);
        content = checkContent(rootElem, XUtil::getFirstChildElement(contentElem), true);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(contentElem, fNonXSAttList);
        }
        if (fAnnotation)
        {
            if (janAnnot->isDataNull())
                janAnnot->reset(fAnnotation);
            else
                janAnnot->get()->setNext(fAnnotation);
        }
    }

    DatatypeValidator* newDV = 0;

    if (baseValidator) {

        if (!baseValidator->isAtomic()) {
            reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::AtomicItemType, baseTypeName);
        }
        else {

            // 'content' should be empty
            // If an annotation was encountered we have already traversed it in
            // checkContent in the case of a base provided (only allowed child is
            // an annotation).
            if (content != 0) { // report an error and continue
                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::SimpleTypeDerivationByListError, typeName);
            }

            // create & register validator for "generated" type
            try {
                newDV = fDatatypeRegistry->createDatatypeValidator(
                    qualifiedName, baseValidator, 0, 0, true, finalSet, true, fGrammarPoolMemoryManager);
            }
            catch (const XMLException& excep) {
                reportSchemaError(contentElem, excep);
            }
            catch(const OutOfMemoryException&)
            {
                throw;
            }
            catch(...) {
                reportSchemaError(contentElem, XMLUni::fgXMLErrDomain,
                                  XMLErrs::DatatypeValidatorCreationError, typeName);
            }
        }
    }

    popCurrentTypeNameStack();
    return newDV;
}

/**
  * Traverses Schema restriction simple type declaration.
  *
  *       <restriction
  *         base = QName
  *         id = ID
  *         {any attributes with non-schema namespace . . .}>
  *         Content: (annotation?, (simpleType?,
  *                  (minExclusive | minInclusive | maxExclusive | maxInclusive | totalDigits | fractionDigits | length | minLength | maxLength | enumeration | whiteSpace | pattern)*))
  *       </restriction>
  *
  */
DatatypeValidator*
TraverseSchema::traverseByRestriction(const DOMElement* const rootElem,
                                      const DOMElement* const contentElem,
                                      const XMLCh* const typeName,
                                      const XMLCh* const qualifiedName,
                                      const int finalSet,
                                      Janitor<XSAnnotation>* const janAnnot) {

    NamespaceScopeManager nsMgr(contentElem, fSchemaInfo, this);

    DatatypeValidator* baseValidator = 0;
    DatatypeValidator* newDV = 0;
    const XMLCh*       baseTypeName = getElementAttValue(contentElem, SchemaSymbols::fgATT_BASE, DatatypeValidator::QName);

    fAttributeCheck.checkAttributes(
        contentElem, GeneralAttributeCheck::E_Restriction, this, false, fNonXSAttList
    );

    const DOMElement* tempEl = XUtil::getNextSiblingElement(contentElem);
    if (tempEl != 0) {
        reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::SimpleTypeContentError, tempEl->getLocalName());
    }

    DOMElement* content = 0;

    if (!baseTypeName || !*baseTypeName) { // must 'see' <simpleType>

        content = checkContent(rootElem, XUtil::getFirstChildElement(contentElem), false);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(contentElem, fNonXSAttList);
        }
        if (fAnnotation)
        {
            if (janAnnot->isDataNull())
                janAnnot->reset(fAnnotation);
            else
                janAnnot->get()->setNext(fAnnotation);
        }

        if (content == 0) {

            reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::ExpectedSimpleTypeInRestriction);
            popCurrentTypeNameStack();
            return 0;
        }

        if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_SIMPLETYPE)) {
            baseValidator = checkForSimpleTypeValidator(content);
        }
        else {

            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::ListUnionRestrictionError, typeName);
            popCurrentTypeNameStack();
            return 0;
        }

        // Check for facets
        content = XUtil::getNextSiblingElement(content);
    }
    else { // base was provided - get proper validator

        baseValidator = findDTValidator(contentElem, typeName, baseTypeName, SchemaSymbols::XSD_RESTRICTION);
        content = checkContent(rootElem, XUtil::getFirstChildElement(contentElem), true);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(contentElem, fNonXSAttList);
        }
        if (fAnnotation)
        {
            if (janAnnot->isDataNull())
                janAnnot->reset(fAnnotation);
            else
                janAnnot->get()->setNext(fAnnotation);
        }
    }

    if (baseValidator) {

        // Get facets if any existing
        typedef RefHashTableOf<KVStringPair> KVRefHash;
        Janitor<KVRefHash>            janFacets(0);
        //RefHashTableOf<KVStringPair>* facets = 0;
        typedef RefArrayVectorOf<XMLCh> XMLChRefArray;
        Janitor<XMLChRefArray>        enums(0);
        //RefArrayVectorOf<XMLCh>*      enums = 0;
        XMLBuffer                     pattern(128, fGrammarPoolMemoryManager);
        Janitor<XSAnnotation>         janEnumAnnot(0);
        Janitor<XSAnnotation>         janPatternAnnot(0);
        XMLCh                         fixedFlagStr[16];
        unsigned int                  fixedFlag = 0;
        unsigned short                scope = 0;
        bool                          isFirstPattern = true;
        bool                          sawPattern = false;


        while (content != 0) {

            if (content->getNodeType() == DOMNode::ELEMENT_NODE) {

                NamespaceScopeManager nsMgr(content, fSchemaInfo, this);

                const XMLCh* facetName = content->getLocalName();

                bool bContinue=false;   // workaround for Borland bug with 'continue' in 'catch'
                try {
                    scope = fAttributeCheck.getFacetId(facetName, fMemoryManager);
                }
                catch(const OutOfMemoryException&)
                {
                    throw;
                }
                catch (...) {

                    reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::InvalidFacetName, facetName);
                    content = XUtil::getNextSiblingElement(content);
                    bContinue=true;
                }
                if(bContinue)
                    continue;

                fAttributeCheck.checkAttributes(
                    content, scope, this, false, fNonXSAttList
                );
                if (checkContent(rootElem, XUtil::getFirstChildElement(content), true) != 0)
                    reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);

                const XMLCh* attValue = content->getAttribute(SchemaSymbols::fgATT_VALUE);
                if (janFacets.get() == 0) {
                    janFacets.reset(new (fGrammarPoolMemoryManager) RefHashTableOf<KVStringPair>(29, true, fGrammarPoolMemoryManager));

                }

                if (XMLString::equals(facetName, SchemaSymbols::fgELT_ENUMERATION)) {
                    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
                    {
                        fAnnotation = generateSyntheticAnnotation(content, fNonXSAttList);
                    }
                    if (fAnnotation) {
                        if (janEnumAnnot.isDataNull())
                            janEnumAnnot.reset(fAnnotation);
                        else
                            janEnumAnnot.get()->setNext(fAnnotation);
                    }

                    // REVISIT
                    // if validator is a notation datatype validator, we need
                    // to get the qualified name first before adding it to the
                    // enum buffer
                    if (!enums.get()) {
                        enums.reset(new (fGrammarPoolMemoryManager) RefArrayVectorOf<XMLCh>(8, true, fGrammarPoolMemoryManager));
                    }

                    if (baseValidator->getType() == DatatypeValidator::NOTATION) {

                        const XMLCh* localPart = getLocalPart(attValue);
                        const XMLCh* prefix = getPrefix(attValue);
                        const XMLCh* uriStr = (prefix && *prefix) ? resolvePrefixToURI(content, prefix) : fTargetNSURIString;
                        unsigned int uriId = fURIStringPool->addOrFind(uriStr);

                        if (!fNotationRegistry->containsKey(localPart, uriId)) {
                            traverseNotationDecl(content, localPart, uriStr);
                        }

                        if (uriStr && *uriStr) {
                            fBuffer.set(uriStr);
                            fBuffer.append(chColon);
                            fBuffer.append(localPart);
                            enums.get()->addElement(XMLString::replicate(fBuffer.getRawBuffer(), fGrammarPoolMemoryManager));
                        }
                        else {
                            enums.get()->addElement(XMLString::replicate(localPart, fGrammarPoolMemoryManager));
                        }

                    }
                    else if (baseValidator->getType() == DatatypeValidator::QName) {
                        // We need the URI string for the prefix to determine
                        // if that matches the value in the instance document.
                        // Code was just comparing the string of prefix:localname
                        // and if the schema and instance document had different
                        // prefixes with the same URI string then we were giving an error.
                        const XMLCh* prefix = getPrefix(attValue);
                        const XMLCh* uriStr = (prefix && *prefix) ? resolvePrefixToURI(content, prefix) : fTargetNSURIString;

                        enums.get()->addElement(XMLString::replicate(attValue, fGrammarPoolMemoryManager));
                        enums.get()->addElement(XMLString::replicate(uriStr, fGrammarPoolMemoryManager));
                    }
                    else {
                        enums.get()->addElement(XMLString::replicate(attValue, fGrammarPoolMemoryManager));
                    }
                }
                else if (XMLString::equals(facetName, SchemaSymbols::fgELT_PATTERN)) {
                    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
                    {
                        fAnnotation = generateSyntheticAnnotation(content, fNonXSAttList);
                    }
                    if (fAnnotation) {
                        if (janPatternAnnot.isDataNull())
                            janPatternAnnot.reset(fAnnotation);
                        else
                            janPatternAnnot.get()->setNext(fAnnotation);
                    }
                    sawPattern = true;
                    if (isFirstPattern) { // fBuffer.isEmpty() - overhead call

                        isFirstPattern = false;
                        pattern.set(attValue);
                    }
                    else { //datatypes: 5.2.4 pattern

                        pattern.append(chPipe);
                        pattern.append(attValue);
                    }
                }
                else {

                    if (janFacets.get()->containsKey(facetName)) {

                        if (fAnnotation)
                            delete fAnnotation;
                        reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateFacet, facetName);
                    }
                    else {

                        if (XMLString::equals(facetName, SchemaSymbols::fgELT_WHITESPACE)
                            && baseValidator->getType() != DatatypeValidator::String
                            && !XMLString::equals(attValue, SchemaSymbols::fgWS_COLLAPSE)) {

                            if (fAnnotation)
                                delete fAnnotation;
                            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::WS_CollapseExpected, attValue);
                        }
                        else {

                            const XMLCh* facetStr = fStringPool->getValueForId(fStringPool->addOrFind(facetName));
                            KVStringPair* kv = new (fGrammarPoolMemoryManager) KVStringPair(facetStr, attValue, fGrammarPoolMemoryManager);
                            if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
                            {
                                fAnnotation = generateSyntheticAnnotation(content, fNonXSAttList);
                            }
                            if (fAnnotation)
                                fSchemaGrammar->putAnnotation(kv, fAnnotation);

                            janFacets.get()->put((void*) facetStr, kv);
                            checkFixedFacet(content, facetStr, baseValidator, fixedFlag);
                        }
                    }
                }
            }

            content = XUtil::getNextSiblingElement(content);
        } // end while

        if (sawPattern) {

            KVStringPair* kv = new (fGrammarPoolMemoryManager) KVStringPair(SchemaSymbols::fgELT_PATTERN, pattern.getRawBuffer(), pattern.getLen(), fGrammarPoolMemoryManager);
            if (!janPatternAnnot.isDataNull())
                fSchemaGrammar->putAnnotation(kv, janPatternAnnot.release());
            janFacets.get()->put((void*) SchemaSymbols::fgELT_PATTERN, kv);
        }

        if (fixedFlag) {

            XMLString::binToText(fixedFlag, fixedFlagStr, 15, 10, fGrammarPoolMemoryManager);
            janFacets.get()->put((void*) SchemaSymbols::fgATT_FIXED,
                        new (fGrammarPoolMemoryManager) KVStringPair(SchemaSymbols::fgATT_FIXED, fixedFlagStr, fGrammarPoolMemoryManager));
        }

        if (enums.get() && !janEnumAnnot.isDataNull())
            fSchemaGrammar->putAnnotation(enums.get(), janEnumAnnot.release());

        try {
            newDV = fDatatypeRegistry->createDatatypeValidator(qualifiedName, baseValidator, janFacets.release(), enums.release(), false, finalSet, true, fGrammarPoolMemoryManager);
        }
        catch (const XMLException& excep) {
            reportSchemaError(contentElem, excep);
        }
        catch(const OutOfMemoryException&)
        {
            throw;
        }
        catch(...) {
            reportSchemaError(contentElem, XMLUni::fgXMLErrDomain,
                              XMLErrs::DatatypeValidatorCreationError, typeName);
        }
    }
    popCurrentTypeNameStack();
    return newDV;
}

/**
  * Traverses Schema union simple type declaration.
  *
  *       <union
  *         id = ID
  *         memberTypes = List of QName
  *         {any attributes with non-schema namespace . . .}>
  *         Content: (annotation?, simpleType*)
  *       </union>
  *
  */
DatatypeValidator*
TraverseSchema::traverseByUnion(const DOMElement* const rootElem,
                                const DOMElement* const contentElem,
                                const XMLCh* const typeName,
                                const XMLCh* const qualifiedName,
                                const int finalSet,
                                int baseRefContext,
                                Janitor<XSAnnotation>* const janAnnot) {

    NamespaceScopeManager nsMgr(contentElem, fSchemaInfo, this);

    fAttributeCheck.checkAttributes(
        contentElem, GeneralAttributeCheck::E_Union, this, false, fNonXSAttList
    );

    const DOMElement* tempEl = XUtil::getNextSiblingElement(contentElem);
    if (tempEl != 0) {
        reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::SimpleTypeContentError, tempEl->getLocalName());
    }

    const XMLCh*                    baseTypeName = getElementAttValue(contentElem, SchemaSymbols::fgATT_MEMBERTYPES);
    DatatypeValidator*              baseValidator = 0;
    RefVectorOf<DatatypeValidator>* validators = new (fGrammarPoolMemoryManager) RefVectorOf<DatatypeValidator>(4, false, fGrammarPoolMemoryManager);
    Janitor<RefVectorOf<DatatypeValidator> > janValidators(validators);
    DOMElement*                     content = 0;

    if (baseTypeName && *baseTypeName) { //base was provided - get proper validator.

        XMLStringTokenizer unionMembers(baseTypeName, fGrammarPoolMemoryManager);
        int             tokCount = unionMembers.countTokens();

        for (int i = 0; i < tokCount; i++) {

            const XMLCh* memberTypeName = unionMembers.nextToken();

            baseValidator = findDTValidator(contentElem, typeName, memberTypeName, SchemaSymbols::XSD_UNION);

            if (baseValidator == 0) {

                popCurrentTypeNameStack();
                return 0;
            }

            validators->addElement(baseValidator);
        }

        content = checkContent(rootElem, XUtil::getFirstChildElement(contentElem), true);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(contentElem, fNonXSAttList);
        }
        if (fAnnotation)
        {
            if (janAnnot->isDataNull())
                janAnnot->reset(fAnnotation);
            else
                janAnnot->get()->setNext(fAnnotation);
        }
    }
    else { // must 'see' <simpleType>

        content = checkContent(rootElem, XUtil::getFirstChildElement(contentElem), false);
        if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
        {
            fAnnotation = generateSyntheticAnnotation(contentElem, fNonXSAttList);
        }
        if (fAnnotation)
        {
            if (janAnnot->isDataNull())
                janAnnot->reset(fAnnotation);
            else
                janAnnot->get()->setNext(fAnnotation);
        }

        if (content == 0) {

            reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::ExpectedSimpleTypeInUnion, typeName);
            popCurrentTypeNameStack();
            return 0;
        }

        if (!XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_SIMPLETYPE)) {

            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::ListUnionRestrictionError, typeName);
            popCurrentTypeNameStack();
            return 0;
        }
    }

    // process union content of simpleType children if any
    while (content != 0) {

        if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_SIMPLETYPE)) {

            baseValidator = checkForSimpleTypeValidator(content, baseRefContext | SchemaSymbols::XSD_UNION);

            if (baseValidator == 0) {

                popCurrentTypeNameStack();
                return 0;
            }

            validators->addElement(baseValidator);
        }
        else {
            // REVISIT - should we break. For now, we will continue and move to
            // the next sibling
            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::ListUnionRestrictionError, typeName);
        }

        content   = XUtil::getNextSiblingElement(content);
    } // end while

    DatatypeValidator* newDV = 0;
    janValidators.orphan();

    try {
        newDV = fDatatypeRegistry->createDatatypeValidator(qualifiedName, validators, finalSet, true, fGrammarPoolMemoryManager);
    }
    catch (const XMLException& excep) {
        reportSchemaError(contentElem, excep);
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...) {
        reportSchemaError(contentElem, XMLUni::fgXMLErrDomain,
                          XMLErrs::DatatypeValidatorCreationError, typeName);
    }

    popCurrentTypeNameStack();
    return newDV;
}


/**
  * Traverse SimpleContent Declaration
  *
  *   <simpleContent
  *     id = ID
  *     {any attributes with non-schema namespace...}>
  *
  *     Content: (annotation? , (restriction | extension))
  *   </simpleContent>
  *
  *   <restriction
  *     base = QNAME
  *     id = ID
  *     {any attributes with non-schema namespace...}>
  *
  *     Content: (annotation?, (simpleType?, (minExclusive | minInclusive
  *               | maxExclusive | maxInclusive | totalDigits | fractionDigits
  *               | length | minLength | maxLength | enumeration | pattern
  *               | whiteSpace)*)?, ((attribute | attributeGroup)* , anyAttribute?))
  *   </restriction>
  *
  *   <extension
  *     base = QNAME
  *     id = ID
  *     {any attributes with non-schema namespace...}>
  *     Content: (annotation? , ((attribute | attributeGroup)* , anyAttribute?))
  *   </extension>
  *
  */
void TraverseSchema::traverseSimpleContentDecl(const XMLCh* const typeName,
                                               const XMLCh* const qualifiedName,
                                               const DOMElement* const contentDecl,
                                               ComplexTypeInfo* const typeInfo,
                                               Janitor<XSAnnotation>* const janAnnot)
{
    NamespaceScopeManager nsMgr(contentDecl, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    bool preProcessFlag = typeInfo->getPreprocessed();

    if (!preProcessFlag) {
        fAttributeCheck.checkAttributes(
            contentDecl, GeneralAttributeCheck::E_SimpleContent
            , this, false, fNonXSAttList
        );
    }

    // -----------------------------------------------------------------------
    // Set the content type to be simple, and initialize content spec handle
    // -----------------------------------------------------------------------
    typeInfo->setContentType(SchemaElementDecl::Simple);

    // -----------------------------------------------------------------------
    // Process annotation if any
    // -----------------------------------------------------------------------
    DOMElement* simpleContent = checkContent(contentDecl, XUtil::getFirstChildElement(contentDecl), false, !preProcessFlag);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(contentDecl, fNonXSAttList);
    }
    if (fAnnotation)
    {
        if (janAnnot->isDataNull())
            janAnnot->reset(fAnnotation);
        else
            janAnnot->get()->setNext(fAnnotation);
    }

    // If there are no children, return
    if (simpleContent == 0) {

        reportSchemaError(contentDecl, XMLUni::fgXMLErrDomain, XMLErrs::EmptySimpleTypeContent);
        throw TraverseSchema::InvalidComplexTypeInfo;
    }

    NamespaceScopeManager nsMgr2(simpleContent, fSchemaInfo, this);
    // -----------------------------------------------------------------------
    // The content should be either "restriction" or "extension"
    // -----------------------------------------------------------------------
    if (!preProcessFlag) {
        const XMLCh* const contentName = simpleContent->getLocalName();

        if (XMLString::equals(contentName, SchemaSymbols::fgATTVAL_RESTRICTION)) {

            fAttributeCheck.checkAttributes(
                simpleContent, GeneralAttributeCheck::E_Restriction
                , this, false, fNonXSAttList
            );
            typeInfo->setDerivedBy(SchemaSymbols::XSD_RESTRICTION);
        }
        else if (XMLString::equals(contentName, SchemaSymbols::fgATTVAL_EXTENSION)) {

            fAttributeCheck.checkAttributes(
                simpleContent, GeneralAttributeCheck::E_Extension
                , this, false, fNonXSAttList
            );
            typeInfo->setDerivedBy(SchemaSymbols::XSD_EXTENSION);
        }
        else {
            reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidSimpleContent);
            throw TraverseSchema::InvalidComplexTypeInfo;
        }
    }

    //Skip over any annotations in the restriction or extension elements
    DOMElement* content = checkContent(simpleContent, XUtil::getFirstChildElement(simpleContent), true, !preProcessFlag);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(simpleContent, fNonXSAttList);
    }
    if (fAnnotation)
    {
        if (janAnnot->isDataNull())
            janAnnot->reset(fAnnotation);
        else
            janAnnot->get()->setNext(fAnnotation);
    }

    // -----------------------------------------------------------------------
    // Handle the base type name
    // -----------------------------------------------------------------------
    const XMLCh* baseName = getElementAttValue(simpleContent, SchemaSymbols::fgATT_BASE, DatatypeValidator::QName);

    if (!baseName || !*baseName) {

        reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::UnspecifiedBase);
        throw TraverseSchema::InvalidComplexTypeInfo;
    }

    const XMLCh* prefix = getPrefix(baseName);
    const XMLCh* localPart = getLocalPart(baseName);
    const XMLCh* uri = resolvePrefixToURI(simpleContent, prefix);

    // check for 'anyType'
    if (XMLString::equals(uri, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
        && XMLString::equals(localPart, SchemaSymbols::fgATTVAL_ANYTYPE)) {

        reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidSimpleContentBase, baseName);
        throw TraverseSchema::InvalidComplexTypeInfo;
    }

    processBaseTypeInfo(simpleContent, baseName, localPart, uri, typeInfo);

    ComplexTypeInfo* baseTypeInfo = typeInfo->getBaseComplexTypeInfo();
    DatatypeValidator* baseValidator = typeInfo->getBaseDatatypeValidator();

    if (baseValidator != 0 && baseTypeInfo == 0) {

        // check that the simpleType does not preclude derivation by extension
        if ((baseValidator->getFinalSet() & SchemaSymbols::XSD_EXTENSION) == typeInfo->getDerivedBy()) {

            reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::DisallowedSimpleTypeExtension,
                              baseName, typeName);
            throw TraverseSchema::InvalidComplexTypeInfo;
        }

        //Schema Spec: 5.11: Complex Type Definition Properties Correct: 2
        if (typeInfo->getDerivedBy() == SchemaSymbols::XSD_RESTRICTION) {

            reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidComplexTypeBase, baseName);
            throw TraverseSchema::InvalidComplexTypeInfo;
        }
    }

    // check that the base isn't a complex type with complex content
    // and that derivation method is not included in 'final'
    bool simpleTypeRequired = false;

    if (baseTypeInfo) {

        if (baseTypeInfo->getContentType() != SchemaElementDecl::Simple) {

            // Schema Errata: E1-27
            if (typeInfo->getDerivedBy() == SchemaSymbols::XSD_RESTRICTION
                && ((baseTypeInfo->getContentType() == SchemaElementDecl::Mixed_Simple
                    || baseTypeInfo->getContentType() == SchemaElementDecl::Mixed_Complex)
                    && emptiableParticle(baseTypeInfo->getContentSpec()))) {
                simpleTypeRequired = true;
            }
            else {
                reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidSimpleContentBase, baseName);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }
        }

        if ((baseTypeInfo->getFinalSet() & typeInfo->getDerivedBy()) != 0) {
            reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::ForbiddenDerivation, baseName);
            throw TraverseSchema::InvalidComplexTypeInfo;
        }
    }

    // -----------------------------------------------------------------------
    // Process the content of the derivation
    // -----------------------------------------------------------------------
    if (typeInfo->getDerivedBy() == SchemaSymbols::XSD_RESTRICTION) {

        if(baseTypeInfo)
            typeInfo->setBaseDatatypeValidator(baseTypeInfo->getDatatypeValidator());

        if (content != 0) {

            // ---------------------------------------------------------------
            // There may be a simple type definition in the restriction
            // element. The data type validator will be based on it, if
            // specified
            // ---------------------------------------------------------------
            if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_SIMPLETYPE)) {

                DatatypeValidator* simpleTypeDV = traverseSimpleTypeDecl(content, false);

                if (simpleTypeDV) {

                    // Check that the simpleType validator is validly derived
                    // from base
                    DatatypeValidator* baseDV = typeInfo->getBaseDatatypeValidator();

                    if (baseDV  && !baseDV->isSubstitutableBy(simpleTypeDV)) {

                        reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::InvalidContentRestriction);
                        throw TraverseSchema::InvalidComplexTypeInfo;
                    }

                    typeInfo->setBaseDatatypeValidator(simpleTypeDV);
                    content = XUtil::getNextSiblingElement(content);
                }
                else {
                    throw TraverseSchema::InvalidComplexTypeInfo;
                }
            }
            // Schema Errata E1-27
            // Complex Type Definition Restriction OK: 2.2
            else if (simpleTypeRequired) {

                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::CT_SimpleTypeChildRequired);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }

            // ---------------------------------------------------------------
            // Build up the facet info
            // ---------------------------------------------------------------
            RefHashTableOf<KVStringPair>*  facets = 0;
            RefArrayVectorOf<XMLCh>*       enums = 0;
            XMLBuffer                      pattern(128, fGrammarPoolMemoryManager);
            XMLCh                          fixedFlagStr[16];
            unsigned int                   fixedFlag = 0;
            unsigned short                 scope = 0;
            bool                           isFirstPattern = true;

            while (content != 0) {

                const XMLCh* facetName = content->getLocalName();

                bool bDoBreak=false;    // workaround for Borland bug with 'break' in 'catch'
                // if not a valid facet, break from the loop
                try {
                    scope = fAttributeCheck.getFacetId(facetName, fMemoryManager);
                }
                catch(const OutOfMemoryException&)
                {
                    throw;
                }
                catch(...) {
                    bDoBreak=true;
                }
                if(bDoBreak)
                    break;

                if (content->getNodeType() == DOMNode::ELEMENT_NODE) {

                    fAttributeCheck.checkAttributes(content, scope, this);

                    const XMLCh* attValue = content->getAttribute(SchemaSymbols::fgATT_VALUE);

                    if (facets == 0) {
                        facets = new (fGrammarPoolMemoryManager) RefHashTableOf<KVStringPair>(29, true, fGrammarPoolMemoryManager);
                    }

                    if (XMLString::equals(facetName, SchemaSymbols::fgELT_ENUMERATION)) {

                        if (!enums) {
                            enums = new (fGrammarPoolMemoryManager) RefArrayVectorOf<XMLCh>(8, true, fGrammarPoolMemoryManager);
                        }

                        enums->addElement(XMLString::replicate(attValue, fGrammarPoolMemoryManager));
                    }
                    else if (XMLString::equals(facetName, SchemaSymbols::fgELT_PATTERN)) {

                        if (isFirstPattern) { // fBuffer.isEmpty() - overhead call

                            isFirstPattern = false;
                            pattern.set(attValue);
                        }
                        else { //datatypes: 5.2.4 pattern

                            pattern.append(chPipe);
                            pattern.append(attValue);
                        }
                    }
                    else {

                        if (facets->containsKey(facetName)) {
                            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateFacet, facetName);
                        }
                        else {

                            const XMLCh* facetNameStr =
                                fStringPool->getValueForId(fStringPool->addOrFind(facetName));

                            facets->put((void*) facetNameStr, new (fGrammarPoolMemoryManager) KVStringPair(facetNameStr, attValue, fGrammarPoolMemoryManager));
                            checkFixedFacet(content, facetNameStr, typeInfo->getBaseDatatypeValidator(), fixedFlag);
                        }
                    }
                }

                content = XUtil::getNextSiblingElement(content);
            }

            if (facets) {

                if (!pattern.isEmpty()) {
                    facets->put
                    (
                        (void*) SchemaSymbols::fgELT_PATTERN,
                        new (fGrammarPoolMemoryManager) KVStringPair
                            (
                                SchemaSymbols::fgELT_PATTERN
                                , pattern.getRawBuffer()
                                , pattern.getLen()
                                , fGrammarPoolMemoryManager
                            )
                    );
                }

                if (fixedFlag) {

                    XMLString::binToText(fixedFlag, fixedFlagStr, 15, 10, fGrammarPoolMemoryManager);
                    facets->put((void*) SchemaSymbols::fgATT_FIXED,
                        new (fGrammarPoolMemoryManager) KVStringPair(SchemaSymbols::fgATT_FIXED, fixedFlagStr, fGrammarPoolMemoryManager));
                }

                try {

                    DatatypeValidator* simpleDV =
                        fDatatypeRegistry->createDatatypeValidator
                        (
                            qualifiedName,
                            typeInfo->getBaseDatatypeValidator(),
                            facets, enums, false, 0, true, fGrammarPoolMemoryManager
                        );
                    simpleDV->setAnonymous();
                    typeInfo->setDatatypeValidator(simpleDV);
                }
                catch (const XMLException& excep) {
                    reportSchemaError(simpleContent, excep);
                }
                catch(const OutOfMemoryException&)
                {
                    throw;
                }
                catch(...) {
                    reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::DatatypeValidatorCreationError, typeName);
                }
            }
            else {
                typeInfo->setDatatypeValidator(typeInfo->getBaseDatatypeValidator());
            }
        }
        else {

            // Schema Errata E1-27
            // Complex Type Definition Restriction OK: 2.2
            if (simpleTypeRequired) {

                reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::CT_SimpleTypeChildRequired);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }

            typeInfo->setDatatypeValidator(typeInfo->getBaseDatatypeValidator());
        }
    } // end RESTRICTION
    else { // EXTENSION

        ComplexTypeInfo* baseTypeInfo = typeInfo->getBaseComplexTypeInfo();

        if (baseTypeInfo!= 0) {

            typeInfo->setBaseDatatypeValidator(baseTypeInfo->getDatatypeValidator());
        }

        typeInfo->setDatatypeValidator(typeInfo->getBaseDatatypeValidator());
    }

    // -----------------------------------------------------------------------
    // Process attributes if any
    // -----------------------------------------------------------------------
    processAttributes(simpleContent, content, typeInfo);

    if (XUtil::getNextSiblingElement(simpleContent) != 0) {
        reportSchemaError(simpleContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildInSimpleContent);
    }

} // End of function traverseSimpleContentDecl

/**
  * Traverse complexContent Declaration
  *
  *   <complexContent
  *     id = ID
  *     mixed = boolean
  *     {any attributes with non-schema namespace...}>
  *
  *     Content: (annotation? , (restriction | extension))
  *   </complexContent>
  *
  *   <restriction
  *     base = QNAME
  *     id = ID
  *     {any attributes with non-schema namespace...}>
  *
  *     Content: (annotation? , (group | all | choice | sequence)?,
  *              ((attribute | attributeGroup)* , anyAttribute?))
  *   </restriction>
  *
  *   <extension
  *     base = QNAME
  *     id = ID
  *     {any attributes with non-schema namespace...}>
  *         Content: (annotation? , (group | all | choice | sequence)?,
  *                  ((attribute | attributeGroup)* , anyAttribute?))
  *   </extension>
  */
void TraverseSchema::traverseComplexContentDecl(const XMLCh* const typeName,
                                                const DOMElement* const contentDecl,
                                                ComplexTypeInfo* const typeInfo,
                                                const bool isMixed,
                                                Janitor<XSAnnotation>* const janAnnot)
{
    NamespaceScopeManager nsMgr(contentDecl, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    bool preProcessFlag = typeInfo->getPreprocessed();

    if (!preProcessFlag) {
        fAttributeCheck.checkAttributes(
            contentDecl, GeneralAttributeCheck::E_ComplexContent
            , this, false, fNonXSAttList
        );
    }

    // -----------------------------------------------------------------------
    // Determine whether the content is mixed, or element-only
    // Setting here overrides any setting on the complex type decl
    // -----------------------------------------------------------------------
    const XMLCh* const mixed = getElementAttValue(contentDecl, SchemaSymbols::fgATT_MIXED, DatatypeValidator::Boolean);
    bool mixedContent = isMixed;

    if (mixed) {
        if (XMLString::equals(mixed, SchemaSymbols::fgATTVAL_TRUE)
            || XMLString::equals(mixed, fgValueOne)) {
            mixedContent = true;
        }
        else if (XMLString::equals(mixed, SchemaSymbols::fgATTVAL_FALSE)
                 || XMLString::equals(mixed, fgValueZero)) {
            mixedContent = false;
        }
    }

    // -----------------------------------------------------------------------
    // Since the type must have complex content, set the simple type validators
    // to null
    // -----------------------------------------------------------------------
    typeInfo->setDatatypeValidator(0);
    typeInfo->setBaseDatatypeValidator(0);

    DOMElement* complexContent = checkContent(contentDecl,XUtil::getFirstChildElement(contentDecl),false, !preProcessFlag);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(contentDecl, fNonXSAttList);
    }
    if (fAnnotation)
    {
        if (janAnnot->isDataNull())
            janAnnot->reset(fAnnotation);
        else
            janAnnot->get()->setNext(fAnnotation);
    }

    // If there are no children, return
    if (complexContent == 0) {
       throw TraverseSchema::InvalidComplexTypeInfo;
    }

    NamespaceScopeManager nsMgr2(complexContent, fSchemaInfo, this);
    // -----------------------------------------------------------------------
    // The content should be either "restriction" or "extension"
    // -----------------------------------------------------------------------
    const XMLCh* const complexContentName = complexContent->getLocalName();

    if (XMLString::equals(complexContentName, SchemaSymbols::fgELT_RESTRICTION)) {
        typeInfo->setDerivedBy(SchemaSymbols::XSD_RESTRICTION);
    }
    else if (XMLString::equals(complexContentName, SchemaSymbols::fgELT_EXTENSION)) {
        typeInfo->setDerivedBy(SchemaSymbols::XSD_EXTENSION);
    }
    else {

        reportSchemaError(complexContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidComplexContent);
        throw TraverseSchema::InvalidComplexTypeInfo;
    }

    // -----------------------------------------------------------------------
    // Handle the base type name
    // -----------------------------------------------------------------------
    const XMLCh* baseName = getElementAttValue(complexContent, SchemaSymbols::fgATT_BASE, DatatypeValidator::QName);

    if (!baseName || !*baseName) {

        reportSchemaError(complexContent, XMLUni::fgXMLErrDomain, XMLErrs::UnspecifiedBase);
        throw TraverseSchema::InvalidComplexTypeInfo;
    }

    const XMLCh* prefix = getPrefix(baseName);
    const XMLCh* localPart = getLocalPart(baseName);
    const XMLCh* uri = resolvePrefixToURI(complexContent, prefix);
    bool  isBaseAnyType = false;

    // -------------------------------------------------------------
    // check if the base is "anyType"
    // -------------------------------------------------------------
    if (XMLString::equals(uri, SchemaSymbols::fgURI_SCHEMAFORSCHEMA) &&
        XMLString::equals(localPart, SchemaSymbols::fgATTVAL_ANYTYPE)) {
        isBaseAnyType = true;
    }
    else {

        processBaseTypeInfo(complexContent, baseName, localPart, uri, typeInfo);

        //Check that the base is a complex type
        if (typeInfo->getBaseComplexTypeInfo() == 0)  {

            reportSchemaError(complexContent, XMLUni::fgXMLErrDomain, XMLErrs::BaseNotComplexType);
            throw TraverseSchema::InvalidComplexTypeInfo;
        }
    }

    if (fCurrentGroupInfo) // defer processing until later
        throw TraverseSchema::RecursingElement;

    // -----------------------------------------------------------------------
    // Process the content of the derivation
    // -----------------------------------------------------------------------
    //Skip over any annotations in the restriction or extension elements
    DOMElement* content = checkContent(complexContent, XUtil::getFirstChildElement(complexContent), true);
    if (fAnnotation)
    {
        if (janAnnot->isDataNull())
            janAnnot->reset(fAnnotation);
        else
            janAnnot->get()->setNext(fAnnotation);
    }

    processComplexContent(complexContent, typeName, content, typeInfo, localPart,
                          mixedContent, isBaseAnyType);

    if (XUtil::getNextSiblingElement(complexContent) != 0) {
        reportSchemaError(complexContent, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildInComplexContent);
    }
}


/**
  * <anyAttribute
  *   id = ID
  *   namespace = ((##any | ##other) | list of (anyURI | (##targetNamespace | ##local)))>
  *   processContents = (lax | skip | strict) : strict
  *   Content: (annotation?)
  * </anyAttribute>
  */
SchemaAttDef* TraverseSchema::traverseAnyAttribute(const DOMElement* const elem) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_AnyAttribute, this, false, fNonXSAttList
    );

    // ------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // ------------------------------------------------------------------
    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AnyAttributeContentError);
    }
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);
    // ------------------------------------------------------------------
    // Get attributes
    // ------------------------------------------------------------------
    const XMLCh* const processContents = getElementAttValue(elem, SchemaSymbols::fgATT_PROCESSCONTENTS);
    const XMLCh* const nameSpace = getElementAttValue(elem, SchemaSymbols::fgATT_NAMESPACE);

    // ------------------------------------------------------------------
    // Set default att type based on 'processContents' value
    // ------------------------------------------------------------------
    XMLAttDef::DefAttTypes attDefType = XMLAttDef::ProcessContents_Strict;

    if ((!processContents || !*processContents)
        || XMLString::equals(processContents, SchemaSymbols::fgATTVAL_STRICT)) {
        // Do nothing - defaulted already
    }
    else if (XMLString::equals(processContents, SchemaSymbols::fgATTVAL_SKIP)) {
        attDefType = XMLAttDef::ProcessContents_Skip;
    }
    else if (XMLString::equals(processContents, SchemaSymbols::fgATTVAL_LAX)) {
        attDefType = XMLAttDef::ProcessContents_Lax;
    }

    // ------------------------------------------------------------------
    // Process 'namespace' attribute
    // ------------------------------------------------------------------
    int uriIndex = fEmptyNamespaceURI;
    XMLAttDef::AttTypes attType = XMLAttDef::Any_Any;
    ValueVectorOf<unsigned int> namespaceList(8, fGrammarPoolMemoryManager);

    if ((!nameSpace || !*nameSpace)
        || XMLString::equals(nameSpace, SchemaSymbols::fgATTVAL_TWOPOUNDANY)) {
        // Do nothing - defaulted already
    }
    else if (XMLString::equals(nameSpace, SchemaSymbols::fgATTVAL_TWOPOUNDOTHER)) {

        attType = XMLAttDef::Any_Other;
        uriIndex = fTargetNSURI;
    }
    else {

        XMLStringTokenizer tokenizer(nameSpace, fGrammarPoolMemoryManager);
        DatatypeValidator* anyURIDV = fDatatypeRegistry->getDatatypeValidator(SchemaSymbols::fgDT_ANYURI);

        attType = XMLAttDef::Any_List;

        while (tokenizer.hasMoreTokens()) {

            const XMLCh* token = tokenizer.nextToken();

            if (XMLString::equals(token, SchemaSymbols::fgATTVAL_TWOPOUNDLOCAL)) {
                uriIndex = fEmptyNamespaceURI;
            }
            else if (XMLString::equals(token, SchemaSymbols::fgATTVAL_TWOPOUNDTRAGETNAMESPACE)) {
                uriIndex = fTargetNSURI;
            }
            else {

                try {
                    anyURIDV->validate(token
                                     , fSchemaInfo->getValidationContext()
                                     , fMemoryManager);
                }
                catch(const XMLException& excep) {
                    reportSchemaError(elem, excep);
                }
                uriIndex = fURIStringPool->addOrFind(token);
            }

            if (!namespaceList.containsElement(uriIndex)) {
                namespaceList.addElement(uriIndex);
            }
        }

        uriIndex = fEmptyNamespaceURI;
    }

    // ------------------------------------------------------------------
    // Create wildcard attribute
    // ------------------------------------------------------------------
    SchemaAttDef* attDef = new (fGrammarPoolMemoryManager) SchemaAttDef(XMLUni::fgZeroLenString,
                                            XMLUni::fgZeroLenString,
                                            uriIndex, attType, attDefType,
                                            fGrammarPoolMemoryManager);

    if (!janAnnot.isDataNull())
        fSchemaGrammar->putAnnotation(attDef, janAnnot.release());

    if (namespaceList.size()) {
       attDef->setNamespaceList(&namespaceList);
    }

    return attDef;
}

/**
  * <key
  *   id = ID
  *   name = NCName
  *   Content: (annotation?, (selector, field+))
  * </key>
  */
void TraverseSchema::traverseKey(const DOMElement* const icElem,
                                 SchemaElementDecl* const elemDecl) {

    NamespaceScopeManager nsMgr(icElem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        icElem, GeneralAttributeCheck::E_Key, this, false, fNonXSAttList
    );

    // -----------------------------------------------------------------------
    // Create identity constraint
    // -----------------------------------------------------------------------
    const XMLCh* name = getElementAttValue(icElem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);

    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))) {
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_KEY, name);
        return;
    }


    if (!fIdentityConstraintNames) {
        fIdentityConstraintNames = new (fMemoryManager) RefHash2KeysTableOf<IdentityConstraint>(29, (bool) false, fMemoryManager);
    }
    else if (fIdentityConstraintNames->containsKey(name, fTargetNSURI)) {
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_DuplicateDecl, name);
        return;
    }

    IC_Key* icKey = new (fGrammarPoolMemoryManager) IC_Key(name, elemDecl->getBaseName(), fGrammarPoolMemoryManager);
    Janitor<IC_Key> janKey(icKey);

    fIdentityConstraintNames->put((void*) name, fTargetNSURI, icKey);

    // -----------------------------------------------------------------------
    // Get selector and fields
    // -----------------------------------------------------------------------
    if (!traverseIdentityConstraint(icKey, icElem)) {

        fIdentityConstraintNames->put((void*) name, fTargetNSURI, 0);
        return;
    }

    // -----------------------------------------------------------------------
    // Add key to element declaration
    // -----------------------------------------------------------------------
    elemDecl->addIdentityConstraint(icKey);
    icKey->setNamespaceURI(fTargetNSURI);
    janKey.orphan();
}

/**
  * <unique
  *   id = ID
  *   name = NCName
  *   Content: (annotation?, (selector, field+))
  * </unique>
  */
void TraverseSchema::traverseUnique(const DOMElement* const icElem,
                                    SchemaElementDecl* const elemDecl) {

    NamespaceScopeManager nsMgr(icElem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        icElem, GeneralAttributeCheck::E_Unique, this, false, fNonXSAttList
    );

    // -----------------------------------------------------------------------
    // Create identity constraint
    // -----------------------------------------------------------------------
    const XMLCh* name = getElementAttValue(icElem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);

    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))) {
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_UNIQUE, name);
        return;
    }

    if (!fIdentityConstraintNames) {
        fIdentityConstraintNames = new (fGrammarPoolMemoryManager) RefHash2KeysTableOf<IdentityConstraint>(29, (bool) false, fGrammarPoolMemoryManager);
    }
    else if (fIdentityConstraintNames->containsKey(name, fTargetNSURI)) {

        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_DuplicateDecl, name);
        return;
    }

    IC_Unique* icUnique = new (fGrammarPoolMemoryManager) IC_Unique(name, elemDecl->getBaseName(), fGrammarPoolMemoryManager);
    Janitor<IC_Unique> janUnique(icUnique);

    fIdentityConstraintNames->put((void*) name, fTargetNSURI, icUnique);

    // -----------------------------------------------------------------------
    // Get selector and fields
    // -----------------------------------------------------------------------
    if (!traverseIdentityConstraint(icUnique, icElem)) {

        fIdentityConstraintNames->put((void*) name, fTargetNSURI, 0);
        return;
    }

    // -----------------------------------------------------------------------
    // Add identity cosntraints to element declaration
    // -----------------------------------------------------------------------
    elemDecl->addIdentityConstraint(icUnique);
    icUnique->setNamespaceURI(fTargetNSURI);
    janUnique.orphan();
}

/**
  * <keyref
  *   id = ID
  *   name = NCName
  *   refer = QName
  *   Content: (annotation?, (selector, field+))
  * </keyref>
  */
void TraverseSchema::traverseKeyRef(const DOMElement* const icElem,
                                    SchemaElementDecl* const elemDecl) {

    NamespaceScopeManager nsMgr(icElem, fSchemaInfo, this);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        icElem, GeneralAttributeCheck::E_KeyRef, this, false, fNonXSAttList
    );

    // -----------------------------------------------------------------------
    // Verify that key reference "refer" attribute is valid
    // -----------------------------------------------------------------------
    const XMLCh* name = getElementAttValue(icElem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
    const XMLCh* refer = getElementAttValue(icElem, SchemaSymbols::fgATT_REFER, DatatypeValidator::QName);

    if (!XMLChar1_0::isValidNCName(name, XMLString::stringLen(name))) {
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidDeclarationName,
                          SchemaSymbols::fgELT_KEYREF, name);
        return;
    }

    const XMLCh* prefix = getPrefix(refer);
    const XMLCh* localPart = getLocalPart(refer);

    // we use the DOM API, as the NamespaceScope is now pointing to a different place
    const XMLCh* uriStr = icElem->lookupNamespaceURI(*prefix==0?NULL:prefix);
    if ((!uriStr || !*uriStr) && (prefix && *prefix))
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::UnresolvedPrefix, prefix);
    if(!uriStr)
        uriStr=XMLUni::fgZeroLenString;

    IdentityConstraint* icKey = (fIdentityConstraintNames)
        ? fIdentityConstraintNames->get(localPart, fURIStringPool->addOrFind(uriStr)) : 0;

    if (!icKey) {
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_KeyRefReferNotFound, name, localPart);
        return;
    }

    // -----------------------------------------------------------------------
    // Create identity constraint
    // -----------------------------------------------------------------------
    if(fIdentityConstraintNames->containsKey(name, fTargetNSURI)) {

        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_DuplicateDecl, name);
        return;
    }

    IC_KeyRef* icKeyRef = new (fGrammarPoolMemoryManager) IC_KeyRef(name, elemDecl->getBaseName(), icKey, fGrammarPoolMemoryManager);
    Janitor<IC_KeyRef> janKeyRef(icKeyRef);

    fIdentityConstraintNames->put((void*) name, fTargetNSURI, icKeyRef);

    // -----------------------------------------------------------------------
    // Get selector and fields
    // -----------------------------------------------------------------------
    if (!traverseIdentityConstraint(icKeyRef, icElem)) {

        fIdentityConstraintNames->put((void*) name, fTargetNSURI, 0);
        return;
    }

    // -----------------------------------------------------------------------
    // Add key reference to element decl
    // -----------------------------------------------------------------------
    if (icKeyRef->getFieldCount() != icKey->getFieldCount()) {

        fIdentityConstraintNames->put((void*) name, fTargetNSURI, 0);
        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_KeyRefCardinality,
                          name, icKey->getIdentityConstraintName());
    }
    else {

        elemDecl->addIdentityConstraint(icKeyRef);
        icKeyRef->setNamespaceURI(fTargetNSURI);
        janKeyRef.orphan();
    }
}


bool TraverseSchema::traverseIdentityConstraint(IdentityConstraint* const ic,
                                                const DOMElement* const icElem) {

    NamespaceScopeManager nsMgr(icElem, fSchemaInfo, this);

    // ------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // ------------------------------------------------------------------
    DOMElement* elem = checkContent(icElem, XUtil::getFirstChildElement(icElem), false);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(icElem, fNonXSAttList);
    }
    Janitor<XSAnnotation> janAnnot(fAnnotation);

    // ------------------------------------------------------------------
    // Get selector
    // ------------------------------------------------------------------
    if (elem == 0) {

//        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_BadContent);
        return false;
    }

    if (!XMLString::equals(elem->getLocalName(), SchemaSymbols::fgELT_SELECTOR)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::IC_BadContent);
        return false;
    }

    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Selector, this, false, fNonXSAttList
    );
    if (checkContent(icElem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);
    if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
    }
    if (fAnnotation)
    {
        if (janAnnot.isDataNull())
            janAnnot.reset(fAnnotation);
        else
            janAnnot.get()->setNext(fAnnotation);
    }

    // ------------------------------------------------------------------
    // Get xpath attribute
    // ------------------------------------------------------------------
    const XMLCh* xpathExpr = getElementAttValue(elem, SchemaSymbols::fgATT_XPATH);
    XMLSize_t    xpathLen = XMLString::stringLen(xpathExpr);

    if (!xpathExpr || !xpathLen) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::IC_XPathExprMissing);
        return false;
    }

    // ------------------------------------------------------------------
    // Parse xpath expression
    // ------------------------------------------------------------------
    try {

        XercesXPath* sXPath = new (fGrammarPoolMemoryManager) XercesXPath(xpathExpr, fStringPool, fSchemaInfo->getNamespaceScope(), fEmptyNamespaceURI, true, fGrammarPoolMemoryManager);
        IC_Selector* icSelector = new (fGrammarPoolMemoryManager) IC_Selector(sXPath, ic);
        ic->setSelector(icSelector);
    }
    catch (const XPathException& e) {

        reportSchemaError(elem, e);
        return false;
    }

    // ------------------------------------------------------------------
    // Get fields
    // ------------------------------------------------------------------
    elem = XUtil::getNextSiblingElement(elem);

    if (elem == 0) {

        reportSchemaError(icElem, XMLUni::fgXMLErrDomain, XMLErrs::IC_BadContent);
        return false;
    }

    while (elem != 0) {

        if (!XMLString::equals(elem->getLocalName(), SchemaSymbols::fgELT_FIELD)) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::IC_BadContent);
        }
        else {
            // General Attribute Checking
            fAttributeCheck.checkAttributes(
                elem, GeneralAttributeCheck::E_Field, this, false, fNonXSAttList
            );
            if (checkContent(icElem, XUtil::getFirstChildElement(elem), true) != 0)
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);
            if (fScanner->getGenerateSyntheticAnnotations() && !fAnnotation && fNonXSAttList->size())
            {
                fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
            }
            if (fAnnotation)
            {
                if (janAnnot.isDataNull())
                    janAnnot.reset(fAnnotation);
                else
                    janAnnot.get()->setNext(fAnnotation);
            }

            // xpath expression parsing
            xpathExpr = getElementAttValue(elem, SchemaSymbols::fgATT_XPATH);

            if (!xpathExpr || !*xpathExpr) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::IC_XPathExprMissing);
                return false;
            }

            try {

                XercesXPath* fieldXPath = new (fGrammarPoolMemoryManager) XercesXPath
                (
                    xpathExpr
                    , fStringPool
                    , fSchemaInfo->getNamespaceScope()
                    , fEmptyNamespaceURI
                    , false
                    , fGrammarPoolMemoryManager
                );
                IC_Field* icField = new (fGrammarPoolMemoryManager) IC_Field(fieldXPath, ic);
                ic->addField(icField);
            }
            catch (const XPathException& e) {

                reportSchemaError(elem, e);
                return false;
            }
        }

        elem = XUtil::getNextSiblingElement(elem);
    }

    if (!janAnnot.isDataNull())
        fSchemaGrammar->putAnnotation(ic, janAnnot.release());

    if (ic->getFieldCount() == 0) {
        return false;
    }

    return true;
}

// ---------------------------------------------------------------------------
//  TraverseSchema: Helper methods
// ---------------------------------------------------------------------------
bool TraverseSchema::retrieveNamespaceMapping(const DOMElement* const elem) {

    DOMNamedNodeMap* eltAttrs = elem->getAttributes();
    bool seenNS=false;
    const XMLSize_t attrCount = eltAttrs->getLength();

    for (XMLSize_t i = 0; i < attrCount; i++) {

        DOMNode* attribute = eltAttrs->item(i);

        if (!attribute) {
            break;
        }

        const XMLCh* attName = attribute->getNodeName();

        // starts with 'xmlns:'
        if (XMLString::startsWith(attName, XMLUni::fgXMLNSColonString)) {
            if(!seenNS)
                fSchemaInfo->getNamespaceScope()->increaseDepth();
            seenNS=true;

            int offsetIndex = XMLString::indexOf(attName, chColon);
            const XMLCh* attValue = attribute->getNodeValue();

            fSchemaInfo->getNamespaceScope()->addPrefix(attName + offsetIndex + 1, fURIStringPool->addOrFind(attValue));
        }
        else if (XMLString::equals(attName, XMLUni::fgXMLNSString)) { // == 'xmlns'
            if(!seenNS)
                fSchemaInfo->getNamespaceScope()->increaseDepth();
            seenNS=true;

            const XMLCh* attValue = attribute->getNodeValue();
            fSchemaInfo->getNamespaceScope()->addPrefix(XMLUni::fgZeroLenString, fURIStringPool->addOrFind(attValue));
        }
    } // end for
    return seenNS;
}

void TraverseSchema::processChildren(const DOMElement* const root) {

    NamespaceScopeManager nsMgr(root, fSchemaInfo, this);

    bool sawAnnotation = false;
    // process <redefine>, <include> and <import> info items.
    DOMElement* child = XUtil::getFirstChildElement(root);

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* name = child->getLocalName();

        if (XMLString::equals(name, SchemaSymbols::fgELT_ANNOTATION)) {
            XSAnnotation* annot = traverseAnnotationDecl(
                    child, fSchemaInfo->getNonXSAttList(), true);
            if (annot) {
                fSchemaGrammar->addAnnotation(annot);
                sawAnnotation = true;
            }
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_INCLUDE)) {
            traverseInclude(child);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_IMPORT)) {
            traverseImport(child);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_REDEFINE)) {
            traverseRedefine(child);
        }
        else
            break;
    }

    // child refers to the first info item which is not <annotation> or
    // one of the schema inclusion/importation declarations.
    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* name = child->getLocalName();
        const XMLCh* typeName = getElementAttValue(child, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
        int fullNameId = 0;

        if (typeName) {

            fBuffer.set(fTargetNSURIString);
            fBuffer.append(chComma);
            fBuffer.append(typeName);
            fullNameId = fStringPool->addOrFind(fBuffer.getRawBuffer());
        }

        if (XMLString::equals(name, SchemaSymbols::fgELT_ANNOTATION)) {
            XSAnnotation* annot = traverseAnnotationDecl(
                    child, fSchemaInfo->getNonXSAttList(), true);
            if (annot) {
                fSchemaGrammar->addAnnotation(annot);
                sawAnnotation = true;
            }
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_SIMPLETYPE)) {

            if (typeName && *typeName) {
                if (fGlobalDeclarations[ENUM_ELT_SIMPLETYPE]->containsElement(fullNameId)
                    || fGlobalDeclarations[ENUM_ELT_COMPLEXTYPE]->containsElement(fullNameId)) {

                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateGlobalType,
                                      SchemaSymbols::fgELT_SIMPLETYPE, typeName, SchemaSymbols::fgELT_COMPLEXTYPE);
                    continue;
                }
                else {
                    fGlobalDeclarations[ENUM_ELT_SIMPLETYPE]->addElement(fullNameId);
                }
            }

            traverseSimpleTypeDecl(child);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_COMPLEXTYPE)) {

            if (typeName && *typeName) {
                if (fGlobalDeclarations[ENUM_ELT_SIMPLETYPE]->containsElement(fullNameId)
                    || fGlobalDeclarations[ENUM_ELT_COMPLEXTYPE]->containsElement(fullNameId)) {

                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateGlobalType,
                                      SchemaSymbols::fgELT_COMPLEXTYPE, typeName, SchemaSymbols::fgELT_SIMPLETYPE);
                    continue;
                }
                else {
                    fGlobalDeclarations[ENUM_ELT_COMPLEXTYPE]->addElement(fullNameId);
                }
            }

            traverseComplexTypeDecl(child);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_ELEMENT)) {

            if (typeName && *typeName) {
                if (fGlobalDeclarations[ENUM_ELT_ELEMENT]->containsElement(fullNameId)) {

                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateGlobalDeclaration,
                                      SchemaSymbols::fgELT_ELEMENT, typeName);
                    continue;
                }
                else {
                    fGlobalDeclarations[ENUM_ELT_ELEMENT]->addElement(fullNameId);
                }
            }

            traverseElementDecl(child, true);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_ATTRIBUTEGROUP)) {

            if (typeName && *typeName) {
                if (fGlobalDeclarations[ENUM_ELT_ATTRIBUTEGROUP]->containsElement(fullNameId)) {

                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateGlobalDeclaration,
                                      SchemaSymbols::fgELT_ATTRIBUTEGROUP, typeName);
                    continue;
                }
                else {
                    fGlobalDeclarations[ENUM_ELT_ATTRIBUTEGROUP]->addElement(fullNameId);
                }
            }

            if (!typeName || !fAttGroupRegistry->containsKey(typeName)) {
                traverseAttributeGroupDecl(child, 0, true);
            }
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_ATTRIBUTE)) {

            if (typeName && *typeName) {
                if (fGlobalDeclarations[ENUM_ELT_ATTRIBUTE]->containsElement(fullNameId)) {

                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAttribute, typeName);
                    continue;
                }
                else {
                    fGlobalDeclarations[ENUM_ELT_ATTRIBUTE]->addElement(fullNameId);
                }
            }

            if (!typeName || !fAttributeDeclRegistry->containsKey(typeName)) {
                traverseAttributeDecl( child, 0, true);
            }
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_GROUP)) {

            if (typeName && *typeName) {
                if (fGlobalDeclarations[ENUM_ELT_GROUP]->containsElement(fullNameId)) {

                    reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateGlobalDeclaration,
                                      SchemaSymbols::fgELT_GROUP, typeName);
                    continue;
                }
                else {
                    fGlobalDeclarations[ENUM_ELT_GROUP]->addElement(fullNameId);
                }
            }

            if (!typeName || !fGroupRegistry->containsKey(fBuffer.getRawBuffer())) {
                traverseGroupDecl(child);
            }
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_NOTATION)) {
            traverseNotationDecl(child);
        }
        else {
            reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::SchemaElementContentError);
        }
    } // for each child node


    if (fScanner->getGenerateSyntheticAnnotations() && fSchemaInfo->getNonXSAttList()->size() && !sawAnnotation)
    {
        // synthesize a global annotation here.
        fSchemaGrammar->addAnnotation(
                generateSyntheticAnnotation(root, fSchemaInfo->getNonXSAttList())
            );
    }

    // Handle recursing elements - if any
    ValueVectorOf<const DOMElement*>* recursingAnonTypes = fSchemaInfo->getRecursingAnonTypes();

    if (recursingAnonTypes) {

        ValueVectorOf<const XMLCh*>* recursingTypeNames = fSchemaInfo->getRecursingTypeNames();
        XMLSize_t recurseSize = recursingAnonTypes->size();

        for (XMLSize_t i=0; i < recurseSize; i++) {
            traverseComplexTypeDecl(recursingAnonTypes->elementAt(i), false,
                                    recursingTypeNames->elementAt(i));
        }

        recursingAnonTypes->removeAllElements();
        recursingTypeNames->removeAllElements();
    }
}

void TraverseSchema::preprocessChildren(const DOMElement* const root) {

    NamespaceScopeManager nsMgr(root, fSchemaInfo, this);

    // process <redefine>, <include> and <import> info items.
    DOMElement* child = XUtil::getFirstChildElement(root);

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* name = child->getLocalName();

        if (XMLString::equals(name, SchemaSymbols::fgELT_ANNOTATION)) {
            continue;
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_INCLUDE)) {
            preprocessInclude(child);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_IMPORT)) {
            preprocessImport(child);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_REDEFINE)) {
            preprocessRedefine(child);
        }
        else
            break;
    }
}

DOMElement* TraverseSchema::checkContent( const DOMElement* const rootElem
                                        , DOMElement* const contentElem
                                        , const bool isEmpty
                                        , const bool processAnnot)
{
    DOMElement* content = contentElem;
    const XMLCh* name = getElementAttValue(rootElem,SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);

    fAnnotation = 0;
    Janitor<XSAnnotation> janAnnot(0);
    if (!content) {

       if (!isEmpty) {
           reportSchemaError(rootElem, XMLUni::fgXMLErrDomain, XMLErrs::ContentError, name);
       }

       return 0;
    }

    if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_ANNOTATION)) {

        if (processAnnot) {
            janAnnot.reset(traverseAnnotationDecl(content, fNonXSAttList));
        }
        content = XUtil::getNextSiblingElement(content);

        if (!content) { // must be followed by content

            if (!isEmpty) {
                reportSchemaError(contentElem, XMLUni::fgXMLErrDomain, XMLErrs::ContentError, name);
            }
            fAnnotation = janAnnot.release();
            return 0;
        }

        if (XMLString::equals(content->getLocalName(), SchemaSymbols::fgELT_ANNOTATION)) {

            reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::AnnotationError, name);
            return 0;
        }
        fAnnotation = janAnnot.release();
    }
    return content;
}


DatatypeValidator*
TraverseSchema::getDatatypeValidator(const XMLCh* const uriStr,
                                     const XMLCh* const localPartStr) {

    DatatypeValidator* dv = 0;

    if (XMLString::equals(uriStr, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {
        dv = fDatatypeRegistry->getDatatypeValidator(localPartStr);
    }
    else {

        fBuffer.set(uriStr);
        fBuffer.append(chComma);
        fBuffer.append(localPartStr);

        if ((uriStr) && !XMLString::equals(uriStr, fTargetNSURIString)) {

            Grammar* grammar = fGrammarResolver->getGrammar(uriStr);

            if (grammar && grammar->getGrammarType() == Grammar::SchemaGrammarType) {
                dv = ((SchemaGrammar*) grammar)->getDatatypeRegistry()->getDatatypeValidator(fBuffer.getRawBuffer());
            }
        }
        else {
            dv = fDatatypeRegistry->getDatatypeValidator(fBuffer.getRawBuffer());
        }
    }

    return dv;
}


DatatypeValidator*
TraverseSchema::checkForSimpleTypeValidator(const DOMElement* const content,
                                            int baseRefContext) {

    DatatypeValidator* baseValidator = traverseSimpleTypeDecl(content, false, baseRefContext);

    if (!baseValidator) {

        const XMLCh* name = getElementAttValue(content,SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
        reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::UnknownSimpleType, name);
    }

    return baseValidator;
}

ComplexTypeInfo*
TraverseSchema::checkForComplexTypeInfo(const DOMElement* const content) {

    int typeNameIndex = traverseComplexTypeDecl(content, false);
    ComplexTypeInfo* baseTypeInfo = 0;

    if (typeNameIndex != -1) {
        baseTypeInfo = fComplexTypeRegistry->get(fStringPool->getValueForId(typeNameIndex));
    }

    if (typeNameIndex == -1 || baseTypeInfo == 0) {

        const XMLCh* name = getElementAttValue(content,SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);
        reportSchemaError(content, XMLUni::fgXMLErrDomain, XMLErrs::UnknownComplexType, name);
    }

    return baseTypeInfo;
}

DatatypeValidator*
TraverseSchema::findDTValidator(const DOMElement* const elem,
                                const XMLCh* const derivedTypeName,
                                const XMLCh* const baseTypeName,
                                const int baseRefContext) {

    const XMLCh*       prefix = getPrefix(baseTypeName);
    const XMLCh*       localPart = getLocalPart(baseTypeName);
    const XMLCh*       uri = resolvePrefixToURI(elem, prefix);
    DatatypeValidator* baseValidator = getDatatypeValidator(uri, localPart);

    if (baseValidator == 0) {

        // Check if the base is from the schema for schema namespace
        //
        if (XMLString::equals(uri, SchemaSymbols::fgURI_SCHEMAFORSCHEMA))
        {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, uri, localPart);
            return 0;
        }

        SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
        SchemaInfo* saveInfo = fSchemaInfo;
        unsigned int         saveScope = fCurrentScope;

        if (!XMLString::equals(uri, fTargetNSURIString) && (uri && *uri)) {

            // Make sure that we have an explicit import statement.
            // Clause 4 of Schema Representation Constraint:
            // http://www.w3.org/TR/xmlschema-1/#src-resolve
            unsigned int uriId = fURIStringPool->addOrFind(uri);

            if (!isImportingNS(uriId)) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, uri);
                return 0;
            }

            SchemaInfo* impInfo = fSchemaInfo->getImportInfo(uriId);

            if (!impInfo || impInfo->getProcessed())
            {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, uri, localPart);
                return 0;
            }

            infoType = SchemaInfo::IMPORT;
            restoreSchemaInfo(impInfo, infoType);
        }

        DOMElement* baseTypeNode = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_SimpleType,
            SchemaSymbols::fgELT_SIMPLETYPE, localPart, &fSchemaInfo);

        if (baseTypeNode != 0) {

            baseValidator = traverseSimpleTypeDecl(baseTypeNode);

            // restore schema information, if necessary
            if (saveInfo != fSchemaInfo) {
                restoreSchemaInfo(saveInfo, infoType, saveScope);
            }
        }
    }

    if (baseValidator == 0) {
        reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::UnknownBaseDatatype, baseTypeName, derivedTypeName);
    }
    else if ((baseValidator->getFinalSet() & baseRefContext) != 0) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DisallowedBaseDerivation, baseTypeName);
        return 0;
    }

    return baseValidator;
}


const XMLCh* TraverseSchema::resolvePrefixToURI(const DOMElement* const elem,
                                                const XMLCh* const prefix) {

    unsigned int nameSpaceIndex = fSchemaInfo->getNamespaceScope()->getNamespaceForPrefix(prefix);
    const XMLCh* uriStr = fURIStringPool->getValueForId(nameSpaceIndex);

    if ((!uriStr || !*uriStr) && (prefix && *prefix)) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::UnresolvedPrefix, prefix);
        return XMLUni::fgZeroLenString;
    }

    return uriStr;
}

SchemaElementDecl*
TraverseSchema::processElementDeclRef(const DOMElement* const elem,
                                      const XMLCh* const refName)
{
    // check attributes
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_ElementRef, this, false, fNonXSAttList
    );

    // handle annotation
    DOMElement* content = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    Janitor<XSAnnotation> janAnnot(fAnnotation);

    // do not generate synthetic annotation for element reference...

    if (content != 0)
        reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::NoContentForRef, SchemaSymbols::fgELT_ELEMENT);

    SchemaElementDecl* refElemDecl = getGlobalElemDecl(elem, refName);

    if (!refElemDecl)
    {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::RefElementNotFound, refName);
    }
    else
    {
        if (fCurrentComplexType)
            fCurrentComplexType->addElement(refElemDecl);

        if (fCurrentGroupInfo)
            fCurrentGroupInfo->addElement(refElemDecl);
    }

    return refElemDecl;
}

int TraverseSchema::parseBlockSet(const DOMElement* const elem,
                                  const int blockType, const bool isRoot) {

    const XMLCh* blockVal = (isRoot) ? getElementAttValue(elem, SchemaSymbols::fgATT_BLOCKDEFAULT)
                                     : getElementAttValue(elem, SchemaSymbols::fgATT_BLOCK);

    // blockVal == 0 means 'block attribute is missing'; *blockVal == 0 means 'block="" found'
    if (blockVal == 0)
        return fSchemaInfo->getBlockDefault();

    int blockSet = 0;

    if (XMLString::equals(blockVal, SchemaSymbols::fgATTVAL_POUNDALL)) {

        blockSet = SchemaSymbols::XSD_EXTENSION + SchemaSymbols::XSD_RESTRICTION + SchemaSymbols::XSD_SUBSTITUTION;
        return blockSet;
    }

    XMLStringTokenizer tokenizer(blockVal, fGrammarPoolMemoryManager);

    while (tokenizer.hasMoreTokens()) {

        XMLCh* token = tokenizer.nextToken();

        if (XMLString::equals(token, SchemaSymbols::fgATTVAL_SUBSTITUTION)
            && blockType == ES_Block) {

            if ((blockSet & SchemaSymbols::XSD_SUBSTITUTION) == 0 ) {
                blockSet += SchemaSymbols::XSD_SUBSTITUTION;
            }
        }
        else if (XMLString::equals(token, SchemaSymbols::fgATTVAL_EXTENSION)) {

            if ((blockSet & SchemaSymbols::XSD_EXTENSION) == 0) {
                blockSet += SchemaSymbols::XSD_EXTENSION;
            }
        }
        else if (XMLString::equals(token, SchemaSymbols::fgATTVAL_RESTRICTION)) {

            if ((blockSet & SchemaSymbols::XSD_RESTRICTION) == 0 ) {
                blockSet += SchemaSymbols::XSD_RESTRICTION;
            }
        }
        else {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidBlockValue, blockVal);
        }
    } //end while

    return blockSet;
}

int TraverseSchema::parseFinalSet(const DOMElement* const elem,
                                  const int finalType, const bool isRoot) {

    const XMLCh* finalVal = (isRoot) ? getElementAttValue(elem, SchemaSymbols::fgATT_FINALDEFAULT)
                                     : getElementAttValue(elem, SchemaSymbols::fgATT_FINAL);

    // finalVal == 0 means 'final attribute is missing'; *finalVal == 0 means 'final="" found'
    if (finalVal == 0)
        return fSchemaInfo->getFinalDefault();

    int finalSet = 0;

    if (XMLString::equals(finalVal, SchemaSymbols::fgATTVAL_POUNDALL)) {

        finalSet = SchemaSymbols::XSD_RESTRICTION + SchemaSymbols::XSD_LIST +
                   SchemaSymbols::XSD_UNION + SchemaSymbols::XSD_EXTENSION;
        return finalSet;
    }

    XMLStringTokenizer tokenizer(finalVal, fGrammarPoolMemoryManager);

    while (tokenizer.hasMoreTokens()) {

        XMLCh* token = tokenizer.nextToken();

        if (XMLString::equals(token, SchemaSymbols::fgELT_UNION)
            && (finalType == S_Final || finalType == ECS_Final)) {

            if ((finalSet & SchemaSymbols::XSD_UNION) == 0) {
                finalSet += SchemaSymbols::XSD_UNION;
            }
        }
        else if (XMLString::equals(token, SchemaSymbols::fgATTVAL_EXTENSION)
                 && (finalType == EC_Final || finalType == ECS_Final)) {

            if ((finalSet & SchemaSymbols::XSD_EXTENSION) == 0) {
                finalSet += SchemaSymbols::XSD_EXTENSION;
            }
        }
        else if (XMLString::equals(token, SchemaSymbols::fgELT_LIST)
                 && (finalType == S_Final || finalType == ECS_Final)) {

            if ((finalSet & SchemaSymbols::XSD_LIST) == 0 ) {
                finalSet += SchemaSymbols::XSD_LIST;
            }
        }
        else if (XMLString::equals(token, SchemaSymbols::fgATTVAL_RESTRICTION)) {

            if ((finalSet & SchemaSymbols::XSD_RESTRICTION) == 0 ) {
                finalSet += SchemaSymbols::XSD_RESTRICTION;
            }
        }
        else {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidFinalValue, finalVal);
        }
    } //end while

    return finalSet;
}


const DOMElement*
TraverseSchema::checkIdentityConstraintContent(const DOMElement* const content) {

    const DOMElement* child = content;

    if (child != 0) {

        do {

            if (!isIdentityConstraintName(child->getLocalName())) {
                break;
            }

            child = XUtil::getNextSiblingElement(child);

        } while (child != 0);
    }

    return child;
}

bool TraverseSchema::isIdentityConstraintName(const XMLCh* const name) {

    return (XMLString::equals(name, SchemaSymbols::fgELT_KEY)
            || XMLString::equals(name, SchemaSymbols::fgELT_KEYREF)
            || XMLString::equals(name, SchemaSymbols::fgELT_UNIQUE));
}

const XMLCh*
TraverseSchema::checkTypeFromAnotherSchema(const DOMElement* const elem,
                                           const XMLCh* const typeStr) {

    const XMLCh* prefix = getPrefix(typeStr);
    const XMLCh* typeURI = resolvePrefixToURI(elem, prefix);

    if (!XMLString::equals(typeURI, fTargetNSURIString)
        && !XMLString::equals(typeURI, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
        ) {
        return typeURI;
    }

    return 0;
}

DatatypeValidator*
TraverseSchema::getElementTypeValidator(const DOMElement* const elem,
                                        const XMLCh* const typeStr,
                                        bool& noErrorDetected,
                                        const XMLCh* const otherSchemaURI)
{
    const XMLCh*       localPart = getLocalPart(typeStr);
    const XMLCh*       typeURI = otherSchemaURI;
    DatatypeValidator* dv = 0;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    SchemaInfo*          saveInfo = fSchemaInfo;
    unsigned int         saveScope = fCurrentScope;

    if (otherSchemaURI && *otherSchemaURI) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(otherSchemaURI);

        if (!isImportingNS(uriId)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, otherSchemaURI);
            return 0;
        }

        dv = getDatatypeValidator(typeURI, localPart);

        if (dv) {
            return dv;
        }

        SchemaInfo* impInfo = fSchemaInfo->getImportInfo(uriId);

        if (!impInfo || impInfo->getProcessed()) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, typeURI, localPart);
            return 0;
        }

        infoType = SchemaInfo::IMPORT;
        restoreSchemaInfo(impInfo, infoType);
    }
    else {
        const XMLCh* prefix = getPrefix(typeStr);

        typeURI = resolvePrefixToURI(elem, prefix);
        dv = getDatatypeValidator(typeURI, localPart);
    }

    if (!dv) {

        if (!XMLString::equals(typeURI, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
            || XMLString::equals(fTargetNSURIString, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {

            DOMElement* typeElem = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_SimpleType,
                SchemaSymbols::fgELT_SIMPLETYPE, localPart, &fSchemaInfo);

            if (typeElem) {
                traverseSimpleTypeDecl(typeElem);
                dv = getDatatypeValidator(typeURI, localPart);
            }
        }

        // restore schema information, if necessary
        if (saveInfo != fSchemaInfo) {
            restoreSchemaInfo(saveInfo, infoType, saveScope);
        }

        if (!dv) {

            noErrorDetected = false;
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, typeURI, localPart);
        }
    }

    return dv;
}


DatatypeValidator*
TraverseSchema::getAttrDatatypeValidatorNS(const DOMElement* const elem,
                                           const XMLCh* localPart,
                                           const XMLCh* typeURI)
{
    DatatypeValidator*   dv = getDatatypeValidator(typeURI, localPart);
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    SchemaInfo*          saveInfo = fSchemaInfo;
    unsigned int         saveScope = fCurrentScope;

    if (!XMLString::equals(typeURI, fTargetNSURIString)
        && (typeURI && *typeURI)) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(typeURI);

        if (!isImportingNS(uriId)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, typeURI);
            return 0;
        }

        if (!dv) {
            SchemaInfo* impInfo = fSchemaInfo->getImportInfo(uriId);

            if (!impInfo || impInfo->getProcessed())
            {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, typeURI, localPart);
                return 0;
            }

            infoType = SchemaInfo::IMPORT;
            restoreSchemaInfo(impInfo, infoType);
        }
    }

    if (!dv) {

        DOMElement* typeElem = fSchemaInfo->getTopLevelComponent
        (
            SchemaInfo::C_SimpleType
            , SchemaSymbols::fgELT_SIMPLETYPE
            , localPart
            , &fSchemaInfo
        );

        if (typeElem)
            dv = traverseSimpleTypeDecl(typeElem);

        // restore schema information, if necessary
        if (saveInfo != fSchemaInfo) {
            restoreSchemaInfo(saveInfo, infoType, saveScope);
        }
    }

    return dv;
}

ComplexTypeInfo*
TraverseSchema::getElementComplexTypeInfo(const DOMElement* const elem,
                                          const XMLCh* const typeStr,
                                          const XMLCh* const otherSchemaURI)
{
    const XMLCh*         localPart = getLocalPart(typeStr);
    const XMLCh*         prefix = getPrefix(typeStr);
    const XMLCh*         typeURI = (otherSchemaURI) ? otherSchemaURI : resolvePrefixToURI(elem, prefix);
    ComplexTypeInfo*     typeInfo = 0;
    SchemaInfo*          saveInfo = fSchemaInfo;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    unsigned int         saveScope = fCurrentScope;

    fBuffer.set(typeURI);
    fBuffer.append(chComma);
    fBuffer.append(localPart);

    if (otherSchemaURI != 0) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(typeURI);

        if (!isImportingNS(uriId))
            return 0;

        Grammar* aGrammar = fGrammarResolver->getGrammar(typeURI);

        if (!aGrammar || aGrammar->getGrammarType() != Grammar::SchemaGrammarType) {
            return 0;
        }

        typeInfo = ((SchemaGrammar*)aGrammar)->getComplexTypeRegistry()->get(fBuffer.getRawBuffer());

        if (typeInfo) {
            return typeInfo;
        }

        SchemaInfo* impInfo = fSchemaInfo->getImportInfo(uriId);

        if (!impInfo || impInfo->getProcessed()) {
            return 0;
        }

        infoType = SchemaInfo::IMPORT;
        restoreSchemaInfo(impInfo, infoType);
    }
    else {
        typeInfo = fComplexTypeRegistry->get(fBuffer.getRawBuffer());
    }

    if (!typeInfo) {
        if (!XMLString::equals(typeURI, SchemaSymbols::fgURI_SCHEMAFORSCHEMA) ||
            XMLString::equals(fTargetNSURIString, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {

            DOMElement* typeNode = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_ComplexType,
                SchemaSymbols::fgELT_COMPLEXTYPE, localPart, &fSchemaInfo);

            if (typeNode) {
                // fBuffer is reused by traverseComplexTypeDecl, so we have to store its current value
                XMLBuffer buffCopy(fBuffer.getLen()+1, fMemoryManager);
                buffCopy.set(fBuffer.getRawBuffer());
                traverseComplexTypeDecl(typeNode);
                typeInfo =  fComplexTypeRegistry->get(buffCopy.getRawBuffer());
            }
        }
    }

    // restore schema information
    restoreSchemaInfo(saveInfo, infoType, saveScope);
    return typeInfo;
}


SchemaElementDecl*
TraverseSchema::getGlobalElemDecl(const DOMElement* const elem,
                                  const XMLCh* const qName)
{
    const XMLCh*         nameURI =  resolvePrefixToURI(elem, getPrefix(qName));
    const XMLCh*         localPart = getLocalPart(qName);
    SchemaElementDecl*   elemDecl = 0;
    SchemaInfo*          saveInfo = fSchemaInfo;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    unsigned int         saveScope = fCurrentScope;
    unsigned int         uriId = fURIStringPool->addOrFind(nameURI);

    if (fSchemaInfo->getTargetNSURI() != (int) uriId)
    {
    //if (!XMLString::equals(nameURI, fTargetNSURIString)) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        if (!isImportingNS(uriId))
        {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, nameURI);
            return 0;
        }

        Grammar* grammar = fGrammarResolver->getGrammar(nameURI);

        if (grammar && grammar->getGrammarType() == Grammar::SchemaGrammarType)
        {
            elemDecl = (SchemaElementDecl*) grammar->getElemDecl(
                uriId, localPart, 0, Grammar::TOP_LEVEL_SCOPE);
        }
        else
        {
            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::GrammarNotFound, nameURI);
            return 0;
        }

        if (!elemDecl)
        {
            SchemaInfo* impInfo = fSchemaInfo->getImportInfo(uriId);
            if (!impInfo || impInfo->getProcessed())
            {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, nameURI, localPart);
                return 0;
            }

            infoType = SchemaInfo::IMPORT;
            restoreSchemaInfo(impInfo, infoType);
        }
    }
    else
    {
        elemDecl = (SchemaElementDecl*)
            fSchemaGrammar->getElemDecl(fTargetNSURI, localPart, 0, Grammar::TOP_LEVEL_SCOPE);
    }

    if (!elemDecl)
    {
        DOMElement* subsGroupElem = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_Element,
            SchemaSymbols::fgELT_ELEMENT,localPart, &fSchemaInfo);

        if (subsGroupElem)
            elemDecl = traverseElementDecl(subsGroupElem, true);

        if (!elemDecl)
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, nameURI, localPart);
    }

    // restore schema information, if necessary
    if (saveInfo != fSchemaInfo) {
        restoreSchemaInfo(saveInfo, infoType, saveScope);
    }

    return elemDecl;
}

bool
TraverseSchema::isSubstitutionGroupValid(const DOMElement* const elem,
                                         const SchemaElementDecl* const subsElemDecl,
                                         const ComplexTypeInfo* const typeInfo,
                                         const DatatypeValidator* const validator,
                                         const XMLCh* const elemName,
                                         const bool toEmit) {

    // here we must do two things:
    // 1.  Make sure there actually *is* a relation between the types of
    // the element being nominated and the element doing the nominating;
    // (see PR 3.3.6 point #3 in the first tableau, for instance; this
    // and the corresponding tableaux from 3.4.6 and 3.14.6 rule out the nominated
    // element having an anonymous type declaration.
    // 2.  Make sure the nominated element allows itself to be nominated by
    // an element with the given type-relation.
    // Note:  we assume that (complex|simple)Type processing checks
    // whether the type in question allows itself to
    // be modified as this element desires.

    // if substitution element has any as content model type, return true
    bool subsRestricted = false;
    if (subsElemDecl->getModelType() == SchemaElementDecl::Any) {

        if ((subsElemDecl->getFinalSet() & SchemaSymbols::XSD_RESTRICTION) == 0
            || (typeInfo == 0 && validator == 0))
            return true;
        else
            subsRestricted = true;
    }
    // Check for type relationship;
    // that is, make sure that the type we're deriving has some relatoinship
    // to substitutionGroupElt's type.
    else if (typeInfo) { // do complexType case ...need testing

        ComplexTypeInfo* subsTypeInfo = subsElemDecl->getComplexTypeInfo();

        if (subsTypeInfo == typeInfo)
            return true;

        int derivationMethod = typeInfo->getDerivedBy();

        if (subsTypeInfo == 0) {  // take care of complexType based on simpleType case...

            DatatypeValidator* elemDV = typeInfo->getDatatypeValidator();
            DatatypeValidator* subsValidator = subsElemDecl->getDatatypeValidator();

            if (elemDV == subsValidator) {
                return true;
            }
            else if (subsValidator && subsValidator->isSubstitutableBy(elemDV)) {
                if ((subsElemDecl->getFinalSet() & derivationMethod) == 0) {
                    return true;
                }
                else {
                    subsRestricted = true;
                }
            }
        }
        else { // complex content

            const ComplexTypeInfo* elemTypeInfo = typeInfo;

            for (; elemTypeInfo && elemTypeInfo != subsTypeInfo;
                elemTypeInfo = elemTypeInfo->getBaseComplexTypeInfo()) {
            }

            if (elemTypeInfo) {
                if ((subsElemDecl->getFinalSet() & derivationMethod) == 0) {
                    return true;
                }
                else {
                    subsRestricted = true;
                }
            }
        }
    }
    else if (validator) { // do simpleType case...

        if (!subsElemDecl->getComplexTypeInfo()) {
            // first, check for type relation.
            DatatypeValidator* subsValidator = subsElemDecl->getDatatypeValidator();

            if (subsValidator == validator) {
                return true;
            }
            else if (subsValidator && subsValidator->isSubstitutableBy(validator)
                && ((subsElemDecl->getFinalSet() & SchemaSymbols::XSD_RESTRICTION) == 0)) {
                return true;
            }
        }
    }
    else // validator==0 && typeInfo==0 -- no checking
        return true;

    if (toEmit) {
        if (subsRestricted) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidSubstitutionGroupElement,
                              elemName, subsElemDecl->getBaseName());
        }
        else {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::SubstitutionGroupTypeMismatch, elemName);
        }
    }

    return false;
}


SchemaElementDecl*
TraverseSchema::createSchemaElementDecl(const DOMElement* const elem,
                                        const XMLCh* const name,
                                        bool& isDuplicate,
                                        const XMLCh*& valConstraint,
                                        const bool topLevel)
{
    unsigned int enclosingScope = fCurrentScope;
    int uriIndex = fEmptyNamespaceURI;

    if (topLevel) {

        uriIndex = fTargetNSURI;
        enclosingScope = Grammar::TOP_LEVEL_SCOPE;
    }
    else
    {
        const XMLCh* elemForm = getElementAttValue(elem, SchemaSymbols::fgATT_FORM);

        if (((!elemForm || !*elemForm) &&
            (fSchemaInfo->getElemAttrDefaultQualified() & Elem_Def_Qualified))
            || XMLString::equals(elemForm,SchemaSymbols::fgATTVAL_QUALIFIED))
            uriIndex = fTargetNSURI;

        // Check for duplicate elements
        SchemaElementDecl* other = (SchemaElementDecl*)
            fSchemaGrammar->getElemDecl(uriIndex, name, 0, enclosingScope);

        if (other != 0)
        {
            isDuplicate = true;
            return other;
        }
    }

    // create element decl and add it to the grammar
    Janitor<SchemaElementDecl>    elemDecl(new (fGrammarPoolMemoryManager) SchemaElementDecl(
        XMLUni::fgZeroLenString , name, uriIndex , SchemaElementDecl::Any
        , enclosingScope , fGrammarPoolMemoryManager
    ));

    elemDecl->setCreateReason(XMLElementDecl::Declared);

    if (topLevel)
        elemDecl->setPSVIScope(PSVIDefs::SCP_GLOBAL);

    // process attributes
    processElemDeclAttrs(elem, elemDecl.get(), valConstraint, topLevel);

    return elemDecl.release();
}


void TraverseSchema::processAttributeDeclRef(const DOMElement* const elem,
                                             ComplexTypeInfo* const typeInfo,
                                             const XMLCh* const refName,
                                             const XMLCh* const useAttr,
                                             const XMLCh* const defaultVal,
                                             const XMLCh* const fixedVal) {

    if (!typeInfo && !fCurrentAttGroupInfo) {
        return;
    }

    const XMLCh* prefix = getPrefix(refName);
    const XMLCh* localPart = getLocalPart(refName);
    const XMLCh* uriStr = resolvePrefixToURI(elem, prefix);
    unsigned int attURI = fURIStringPool->addOrFind(uriStr);

    // Check for duplicate references
    if (typeInfo && typeInfo->getAttDef(localPart, attURI)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateRefAttribute, uriStr, localPart);
        return;
    }
    else if (fCurrentAttGroupInfo && fCurrentAttGroupInfo->containsAttribute(localPart, attURI)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateRefAttribute, uriStr, localPart);
        return;
    }

    // check for different namespace
    SchemaInfo* saveInfo = fSchemaInfo;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    SchemaAttDef* refAttDef = 0;
    unsigned int saveScope = fCurrentScope;

    if (!XMLString::equals(uriStr, fTargetNSURIString)) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(uriStr);

        if (!isImportingNS(uriId)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, uriStr);
            return;
        }

        Grammar* grammar = fGrammarResolver->getGrammar(uriStr);

        if (grammar == 0 || grammar->getGrammarType() != Grammar::SchemaGrammarType) {

            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::GrammarNotFound, uriStr);
            return;
        }

        refAttDef = (SchemaAttDef*) ((SchemaGrammar*) grammar)->getAttributeDeclRegistry()->get(localPart);

        if (!refAttDef) {

            SchemaInfo* impInfo = fSchemaInfo->getImportInfo(attURI);

            if (!impInfo || impInfo->getProcessed()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TopLevelAttributeNotFound, refName);
                return;
            }

            infoType = SchemaInfo::IMPORT;
            restoreSchemaInfo(impInfo, infoType);
        }
    }

    // if Global attribute registry does not contain the ref attribute, get
    // the referred attribute declaration and traverse it.
    if (!refAttDef) {

        if (fAttributeDeclRegistry->containsKey(localPart) == false) {

            DOMElement* referredAttribute = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_Attribute,
                SchemaSymbols::fgELT_ATTRIBUTE, localPart, &fSchemaInfo);

            if (referredAttribute != 0) {
                traverseAttributeDecl(referredAttribute, 0, true);
            }
        }

        refAttDef = (SchemaAttDef*) fAttributeDeclRegistry->get(localPart);
    }

    // restore schema information, if necessary
    if (fSchemaInfo != saveInfo) {
        restoreSchemaInfo(saveInfo, infoType, saveScope);
    }

    if (!refAttDef) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TopLevelAttributeNotFound, refName);
        return;
    }

    XMLAttDef::DefAttTypes refAttDefType = refAttDef->getDefaultType();
    const XMLCh* refAttValue = refAttDef->getValue();
    bool invalidAttUse = false;

    if (refAttDefType == XMLAttDef::Fixed &&
        (defaultVal || (fixedVal && !XMLString::equals(fixedVal, refAttValue)))) {

        invalidAttUse = true;
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttUseCorrect, refName);
    }

    DatatypeValidator* attDV = refAttDef->getDatatypeValidator();

    //check for multiple attributes with type derived from ID
    if (attDV && attDV->getType() == DatatypeValidator::ID) {

        if (fCurrentAttGroupInfo) {

            if (fCurrentAttGroupInfo->containsTypeWithId()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttGrpPropCorrect3, refName);
                return;
            }

            fCurrentAttGroupInfo->setTypeWithId(true);
        }
        else {

            if (typeInfo->containsAttWithTypeId()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttDeclPropCorrect5, refName);
                return;
            }

            typeInfo->setAttWithTypeId(true);
        }
    }

    bool required = XMLString::equals(useAttr,SchemaSymbols::fgATTVAL_REQUIRED);
    bool prohibited = XMLString::equals(useAttr,SchemaSymbols::fgATTVAL_PROHIBITED);
    QName* attQName = refAttDef->getAttName();
    SchemaAttDef* attDef = new (fGrammarPoolMemoryManager) SchemaAttDef(attQName->getPrefix(),
                                            attQName->getLocalPart(),
                                            attQName->getURI(),
                                            refAttValue,
                                            refAttDef->getType(),
                                            refAttDefType,
                                            0, fGrammarPoolMemoryManager);

    attDef->setBaseAttDecl(refAttDef);
    attDef->setPSVIScope(PSVIDefs::SCP_GLOBAL);

    if (refAttDefType == XMLAttDef::Fixed) {
        if (required && !invalidAttUse) {
            attDef->setDefaultType(XMLAttDef::Required_And_Fixed);
        }
    }
    else {

        if (prohibited) {
            attDef->setDefaultType(XMLAttDef::Prohibited);
        }
        else {

            const XMLCh* valueConstraint = defaultVal;

            if (required){

                if (fixedVal) {

                    attDef->setDefaultType(XMLAttDef::Required_And_Fixed);
                    valueConstraint = fixedVal;
                }
                else {
                    attDef->setDefaultType(XMLAttDef::Required);
                }
            }
            else
            {
                if (fixedVal) {
                    attDef->setDefaultType(XMLAttDef::Fixed);
                    valueConstraint = fixedVal;
                }
                else if (defaultVal) {
                    attDef->setDefaultType(XMLAttDef::Default);
                }
            }

            if (valueConstraint) {

                // validate content of value constraint
                if (attDV) {

                    if (attDV->getType() == DatatypeValidator::ID) {
                        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttDeclPropCorrect3, refName);
                    }
                    else {
                        try {
                            attDV->validate(valueConstraint
                                          , fSchemaInfo->getValidationContext()
                                          , fMemoryManager);
                        }
                        catch(const XMLException& excep) {
                            reportSchemaError(elem, excep);
                        }
                        catch(const OutOfMemoryException&)
                        {
                            throw;
                        }
                        catch (...) {
                            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::DatatypeValidationFailure, valueConstraint);
                        }
                    }
                }

                attDef->setValue(valueConstraint);
            }
        }
    }

    attDef->setDatatypeValidator(attDV);

    bool toClone = false;

    if (typeInfo) {

        toClone = true;
        typeInfo->addAttDef(attDef);
    }

    if (fCurrentAttGroupInfo) {
        fCurrentAttGroupInfo->addAttDef(attDef, toClone);
    }
}


int TraverseSchema::checkMinMax(ContentSpecNode* const specNode,
                                 const DOMElement* const elem,
                                 const int allContextFlag) {

    int minOccurs = 1;
    int maxOccurs = 1;
    const XMLCh* minOccursStr = getElementAttValue(elem, SchemaSymbols::fgATT_MINOCCURS, DatatypeValidator::Decimal);
    const XMLCh* maxOccursStr = getElementAttValue(elem, SchemaSymbols::fgATT_MAXOCCURS, DatatypeValidator::Decimal);

    if (!minOccursStr || !*minOccursStr) {
        if (specNode)
            minOccurs = specNode->getMinOccurs();
    }
    else {
        try {
            minOccurs = XMLString::parseInt(minOccursStr, fMemoryManager);
        }
        catch(const NumberFormatException& e)
        {
            // REVISIT: report a warning that we replaced a number too big?
            if(e.getCode()==XMLExcepts::Str_ConvertOverflow)
                minOccurs = 500;
            else
                minOccurs = 1;
        }
        catch(const OutOfMemoryException&)
        {
            throw;
        }

        if (specNode)
            specNode->setMinOccurs(minOccurs);
    }

    bool isMaxUnbounded = XMLString::equals(maxOccursStr, fgUnbounded);

    if (isMaxUnbounded) {
        maxOccurs = SchemaSymbols::XSD_UNBOUNDED;
        if (specNode)
            specNode->setMaxOccurs(maxOccurs);
    }
    else {
        if (!maxOccursStr || !*maxOccursStr) {
            if (specNode)
                maxOccurs = specNode->getMaxOccurs();
        }
        else {
            try {
                maxOccurs = XMLString::parseInt(maxOccursStr, fMemoryManager);
            }
            catch(const NumberFormatException& e)
            {
                // REVISIT: report a warning that we replaced a number too big?
                if(e.getCode()==XMLExcepts::Str_ConvertOverflow && minOccurs < 500)
                    maxOccurs = 500;
                else
                    maxOccurs = minOccurs;
            }
            catch(const OutOfMemoryException&)
            {
                throw;
            }

            if (specNode)
                specNode->setMaxOccurs(maxOccurs);
        }
    }

    if (minOccurs == 0 && maxOccurs == 0){
        return minOccurs;
    }

    // Constraint checking for min/max value
    if (!isMaxUnbounded) {

        XMLCh tmpMinStr[128];
        XMLCh tmpMaxStr[128];

        XMLString::binToText(minOccurs, tmpMinStr, 127, 10, fMemoryManager);
        XMLString::binToText(maxOccurs, tmpMaxStr, 127, 10, fMemoryManager);

        if (maxOccurs < 1) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidAttValue,
                              tmpMaxStr, SchemaSymbols::fgATT_MAXOCCURS);
            if (specNode)
                specNode->setMaxOccurs(minOccurs);
        }
        else if (maxOccurs < minOccurs) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidMin2MaxOccurs,
                              tmpMinStr, tmpMaxStr);
            if (specNode)
                specNode->setMaxOccurs(minOccurs);
        }
    }

    // Constraint checking for 'all' content
    bool isAllElement = (allContextFlag == All_Element);
    bool isAllGroup = (allContextFlag == All_Group);
    bool isGroupRefAll = (allContextFlag == Group_Ref_With_All);

    if (isAllElement || isAllGroup || isGroupRefAll) {

        if (maxOccurs != 1 || minOccurs > 1) {

            // set back correct value in order to carry on
            if (specNode) {

                specNode->setMaxOccurs(1);

                if (minOccurs > 1)
                    specNode->setMinOccurs(1);
            }

            if (isAllElement) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadMinMaxAllElem);
            }
            else {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadMinMaxAllCT);
            }
        }
    }
    return minOccurs;
}


void TraverseSchema::processComplexContent(const DOMElement* const ctElem,
                                           const XMLCh* const typeName,
                                           const DOMElement* const childElem,
                                           ComplexTypeInfo* const typeInfo,
                                           const XMLCh* const baseLocalPart,
                                           const bool isMixed,
                                           const bool isBaseAnyType) {

    NamespaceScopeManager nsMgr(childElem, fSchemaInfo, this);

    Janitor<ContentSpecNode>    specNodeJan(0);
    ContentSpecNode* specNode = specNodeJan.get();
    const DOMElement* attrNode = 0;
    int                 typeDerivedBy = typeInfo->getDerivedBy();
    ComplexTypeInfo*    baseTypeInfo = typeInfo->getBaseComplexTypeInfo();
    int baseContentType = (baseTypeInfo) ? baseTypeInfo->getContentType() : SchemaElementDecl::Empty;

    if (baseTypeInfo) {

        if (typeDerivedBy == SchemaSymbols::XSD_RESTRICTION) {

            // check to see if the baseType permits derivation by restriction
            if((baseTypeInfo->getFinalSet() & typeDerivedBy) != 0) {

                reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::ForbiddenDerivationByRestriction,
                                  baseLocalPart);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }
        }
        else {

            // check to see if the baseType permits derivation by extension
            if((baseTypeInfo->getFinalSet() & typeDerivedBy) != 0) {

                reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::ForbiddenDerivationByExtension, baseLocalPart);
                throw TraverseSchema::InvalidComplexTypeInfo; // REVISIT - should we continue
            }

            processElements(ctElem, baseTypeInfo, typeInfo);
        }
    }

    bool effectiveContent_hasChild = false;

    if (childElem != 0) {

        fCircularCheckIndex = fCurrentTypeNameStack->size();

        // --------------------------------------------------------------------
        // GROUP, ALL, SEQUENCE or CHOICE, followed by attributes, if specified.
        // Note that it's possible that only attributes are specified.
        // --------------------------------------------------------------------
        const XMLCh* childName = childElem->getLocalName();

        if (XMLString::equals(childName, SchemaSymbols::fgELT_GROUP)) {

            XercesGroupInfo* grpInfo = traverseGroupDecl(childElem, false);

            if (grpInfo) {

                ContentSpecNode* const groupSpecNode = grpInfo->getContentSpec();

                if (groupSpecNode) {

                    int contentContext = groupSpecNode->hasAllContent() ? Group_Ref_With_All : Not_All_Context;
                    specNodeJan.reset(new (fGrammarPoolMemoryManager) ContentSpecNode(*groupSpecNode));
                    specNode = specNodeJan.get();
                    checkMinMax(specNode, childElem, contentContext);
                }
            }

            attrNode = XUtil::getNextSiblingElement(childElem);

        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_SEQUENCE)) {

            specNodeJan.reset(traverseChoiceSequence(childElem, ContentSpecNode::Sequence, effectiveContent_hasChild));
            specNode = specNodeJan.get();
            checkMinMax(specNode, childElem);
            attrNode = XUtil::getNextSiblingElement(childElem);
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_CHOICE)) {

            specNodeJan.reset(traverseChoiceSequence(childElem, ContentSpecNode::Choice, effectiveContent_hasChild));
            specNode = specNodeJan.get();
            int minOccurs = checkMinMax(specNode, childElem);
            if (!effectiveContent_hasChild && minOccurs != 0) {
                effectiveContent_hasChild = true;
            }

            attrNode = XUtil::getNextSiblingElement(childElem);
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_ALL)) {

            specNodeJan.reset(traverseAll(childElem, effectiveContent_hasChild));
            specNode = specNodeJan.get();
            checkMinMax(specNode, childElem, All_Group);
            attrNode = XUtil::getNextSiblingElement(childElem);
        }
        else if (isAttrOrAttrGroup(childElem)) {
            // reset the contentType
            typeInfo->setContentType(SchemaElementDecl::Any);
            attrNode = childElem;
        }
        else {
            reportSchemaError(childElem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildInComplexType, childName);
        }
    }

    typeInfo->setContentSpec(specNode);
    typeInfo->setAdoptContentSpec(true);
    specNodeJan.release();
    bool specNodeWasNull = false;

    // -----------------------------------------------------------------------
    // Merge in information from base, if it exists
    // -----------------------------------------------------------------------
    if (baseTypeInfo) {

        ContentSpecNode* baseSpecNode = baseTypeInfo->getContentSpec();

        if (typeDerivedBy == SchemaSymbols::XSD_RESTRICTION) {

            //check derivation valid - content type is empty (5.2)
            if (!typeInfo->getContentSpec()) {

                if (baseContentType != SchemaElementDecl::Empty
                    && !emptiableParticle(baseSpecNode)) {
                    reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::EmptyComplexRestrictionDerivation);
                }
            }

            // Delay particle constraint checking (5.3) until we have processed
            // the whole schema.
        }
        else {

            // Compose the final content model by concatenating the base and
            // the current in sequence
            if (!specNode) {
                specNodeWasNull = true;
                if (isMixed) {
                    if (baseSpecNode && baseSpecNode->hasAllContent()) {
                        reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::NotAllContent);
                        throw TraverseSchema::InvalidComplexTypeInfo; // REVISIT - should we continue
                    }
                }
                if (baseSpecNode) {
                    specNodeJan.reset(new (fGrammarPoolMemoryManager) ContentSpecNode(*baseSpecNode));
                    specNode = specNodeJan.get();
                    typeInfo->setContentSpec(specNode);
                    typeInfo->setAdoptContentSpec(true);
                    specNodeJan.release();
                }
            }
            else if (baseSpecNode) {

                if (specNode->hasAllContent() || baseSpecNode->hasAllContent()) {

                    reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::NotAllContent);
                    throw TraverseSchema::InvalidComplexTypeInfo; // REVISIT - should we continue
                }

                // Check for derivation valid (extension) - 1.4.3.2.2.1
                if ((isMixed && baseContentType == SchemaElementDecl::Children)
                    || (!isMixed && baseContentType != SchemaElementDecl::Children)) {

                    reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::MixedOrElementOnly, baseLocalPart, typeName);
                    throw TraverseSchema::InvalidComplexTypeInfo; //REVISIT - should we continue
                }

                typeInfo->setAdoptContentSpec(false);
                typeInfo->setContentSpec
                (
                    new (fGrammarPoolMemoryManager) ContentSpecNode
                    (
                        ContentSpecNode::ModelGroupSequence
                        , new (fGrammarPoolMemoryManager) ContentSpecNode(*baseSpecNode)
                        , specNode
                        , true
                        , true
                        , fGrammarPoolMemoryManager
                    )
                );
                typeInfo->setAdoptContentSpec(true);
            }
        }
    }
    else {
        typeInfo->setDerivedBy(0);
    }

    // -------------------------------------------------------------
    // Set the content type
    // -------------------------------------------------------------
    if (isBaseAnyType && typeDerivedBy == SchemaSymbols::XSD_EXTENSION) {

        ContentSpecNode* anySpecNode = new (fGrammarPoolMemoryManager) ContentSpecNode
        (
            new (fGrammarPoolMemoryManager) QName
            (
                XMLUni::fgZeroLenString
                , XMLUni::fgZeroLenString
                , fEmptyNamespaceURI, fGrammarPoolMemoryManager
            )
            , false
            , fGrammarPoolMemoryManager
        );

        anySpecNode->setType(ContentSpecNode::Any_Lax);
        anySpecNode->setMinOccurs(0);
        anySpecNode->setMaxOccurs(SchemaSymbols::XSD_UNBOUNDED);

        if (!specNode) {
            typeInfo->setContentSpec(anySpecNode);
            typeInfo->setDerivedBy(typeDerivedBy);
        }
        else {

            typeInfo->setAdoptContentSpec(false);
            typeInfo->setContentSpec
            (
                new (fGrammarPoolMemoryManager) ContentSpecNode
                (
                    ContentSpecNode::ModelGroupSequence
                    , anySpecNode
                    , specNode
                    , true
                    , true
                    , fGrammarPoolMemoryManager
                )
            );
            typeInfo->setAdoptContentSpec(true);

            if (!isMixed) {

                reportSchemaError(ctElem, XMLUni::fgXMLErrDomain, XMLErrs::MixedOrElementOnly, baseLocalPart, typeName);
                throw TraverseSchema::InvalidComplexTypeInfo; //REVISIT - should we continue
            }
        }

        typeInfo->setContentType(SchemaElementDecl::Mixed_Complex);
    }
    else if (isMixed) {

        if (specNode != 0) {
            typeInfo->setContentType(SchemaElementDecl::Mixed_Complex);
        }
        else {
            // add #PCDATA leaf and set its minOccurs to 0
            ContentSpecNode* pcdataNode = new (fGrammarPoolMemoryManager) ContentSpecNode
            (
                new (fGrammarPoolMemoryManager) QName
                (
                    XMLUni::fgZeroLenString
                    , XMLUni::fgZeroLenString
                    , XMLElementDecl::fgPCDataElemId
                    , fGrammarPoolMemoryManager
                )
                , false
                , fGrammarPoolMemoryManager
            );

            pcdataNode->setMinOccurs(0);
            typeInfo->setContentSpec(pcdataNode);
            typeInfo->setAdoptContentSpec(true);
            typeInfo->setContentType(SchemaElementDecl::Mixed_Simple);
        }
    }
    else if (specNodeWasNull &&
            (typeDerivedBy == SchemaSymbols::XSD_EXTENSION) &&
             baseTypeInfo) {
        typeInfo->setBaseDatatypeValidator(baseTypeInfo->getBaseDatatypeValidator());
        typeInfo->setDatatypeValidator(baseTypeInfo->getDatatypeValidator());
        typeInfo->setContentType(baseTypeInfo->getContentType());
    }
    else if (typeInfo->getContentSpec() == 0) {
        if (!effectiveContent_hasChild) {
            typeInfo->setContentType(SchemaElementDecl::Empty);
        }
        else {
            typeInfo->setContentType(SchemaElementDecl::ElementOnlyEmpty);
        }
    }
    else {
        typeInfo->setContentType(SchemaElementDecl::Children);
    }

    // -------------------------------------------------------------
    // Now, check attributes and handle
    // -------------------------------------------------------------
    if (attrNode != 0) {

        if (!isAttrOrAttrGroup(attrNode)) {
            reportSchemaError(attrNode, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildInComplexType,
                              attrNode->getLocalName());
        }
        else {
            processAttributes(ctElem, attrNode, typeInfo, isBaseAnyType);
        }
    }
    else if (baseTypeInfo != 0 || isBaseAnyType) {
        processAttributes(ctElem, 0, typeInfo, isBaseAnyType);
    }
}


void TraverseSchema::processBaseTypeInfo(const DOMElement* const elem,
                                         const XMLCh* const baseName,
                                         const XMLCh* const localPart,
                                         const XMLCh* const uriStr,
                                         ComplexTypeInfo* const typeInfo) {

    SchemaInfo*          saveInfo = fSchemaInfo;
    ComplexTypeInfo*     baseComplexTypeInfo = 0;
    DatatypeValidator*   baseDTValidator = 0;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    unsigned int         saveScope = fCurrentScope;

    // check if the base type is from another schema
    if (!XMLString::equals(uriStr, fTargetNSURIString)) {

        // check for datatype validator if it's schema for schema URI
        if (XMLString::equals(uriStr, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {

            baseDTValidator = getDatatypeValidator(uriStr, localPart);

            if (!baseDTValidator) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BaseTypeNotFound, baseName);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }
        }
        else {

            // Make sure that we have an explicit import statement.
            // Clause 4 of Schema Representation Constraint:
            // http://www.w3.org/TR/xmlschema-1/#src-resolve
            unsigned int uriId = fURIStringPool->addOrFind(uriStr);

            if (!isImportingNS(uriId)) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, uriStr);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }

            baseComplexTypeInfo = getTypeInfoFromNS(elem, uriStr, localPart);

            if (!baseComplexTypeInfo) {

              baseDTValidator = getDatatypeValidator(uriStr, localPart);

              if (!baseDTValidator)
              {
                SchemaInfo* impInfo = fSchemaInfo->getImportInfo(fURIStringPool->addOrFind(uriStr));

                if (!impInfo || impInfo->getProcessed())
                {
                    reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BaseTypeNotFound, baseName);
                    throw TraverseSchema::InvalidComplexTypeInfo;
                }

                infoType = SchemaInfo::IMPORT;
                restoreSchemaInfo(impInfo, infoType);
              }
            }
        }
    }
    else {

        fBuffer.set(uriStr);
        fBuffer.append(chComma);
        fBuffer.append(localPart);

        // assume the base is a complexType and try to locate the base type first
        const XMLCh* fullBaseName = fBuffer.getRawBuffer();
        baseComplexTypeInfo = fComplexTypeRegistry->get(fullBaseName);

        // Circular check
        if (baseComplexTypeInfo) {

            if (fCurrentTypeNameStack->containsElement(fStringPool->addOrFind(fullBaseName), fCircularCheckIndex)) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoCircularDefinition, fullBaseName);
                throw TraverseSchema::InvalidComplexTypeInfo;
            }
            else if (fCurrentTypeNameStack->containsElement(fStringPool->addOrFind(fullBaseName))) {

                typeInfo->setBaseComplexTypeInfo(baseComplexTypeInfo);
                throw TraverseSchema::RecursingElement;
            }
            else if (baseComplexTypeInfo->getPreprocessed()) {
                baseComplexTypeInfo = 0;
            }
        }
    }

    // if not found, 2 possibilities:
    //           1: ComplexType in question has not been compiled yet;
    //           2: base is SimpleType;
    if (!baseComplexTypeInfo && !baseDTValidator) {

        baseDTValidator = getDatatypeValidator(uriStr, localPart);

        if (baseDTValidator == 0) {

            DOMElement* baseTypeNode = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_ComplexType,
                SchemaSymbols::fgELT_COMPLEXTYPE, localPart, &fSchemaInfo);

            if (baseTypeNode != 0) {

                int baseTypeSymbol = traverseComplexTypeDecl(baseTypeNode);
                baseComplexTypeInfo = fComplexTypeRegistry->get(fStringPool->getValueForId(baseTypeSymbol));
            }
            else {

                baseTypeNode = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_SimpleType,
                    SchemaSymbols::fgELT_SIMPLETYPE, localPart, &fSchemaInfo);

                if (baseTypeNode != 0) {

                    baseDTValidator = traverseSimpleTypeDecl(baseTypeNode);

                    if (baseDTValidator == 0)  {

                        // restore schema information, if necessary
                        if (saveInfo != fSchemaInfo) {
                            restoreSchemaInfo(saveInfo, infoType, saveScope);
                        }

                        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::TypeNotFound, uriStr, localPart, uriStr);
                        throw TraverseSchema::InvalidComplexTypeInfo;
                    }
                }
                else {

                    // restore schema information, if necessary
                    if (saveInfo != fSchemaInfo) {
                        restoreSchemaInfo(saveInfo, infoType, saveScope);
                    }
                    reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BaseTypeNotFound, baseName);
                    throw TraverseSchema::InvalidComplexTypeInfo;
                }
            }
        }
    } // end if

    // restore schema information, if necessary
    if (saveInfo != fSchemaInfo) {
        restoreSchemaInfo(saveInfo, infoType, saveScope);
    }

    typeInfo->setBaseComplexTypeInfo(baseComplexTypeInfo);
    typeInfo->setBaseDatatypeValidator(baseDTValidator);
}


ComplexTypeInfo* TraverseSchema::getTypeInfoFromNS(const DOMElement* const elem,
                                                   const XMLCh* const uriStr,
                                                   const XMLCh* const localPart)
{

    Grammar* grammar = fGrammarResolver->getGrammar(uriStr);

    if (grammar != 0 && grammar->getGrammarType() == Grammar::SchemaGrammarType) {

        fBuffer.set(uriStr);
        fBuffer.append(chComma);
        fBuffer.append(localPart);

        ComplexTypeInfo* typeInfo =
            ((SchemaGrammar*)grammar)->getComplexTypeRegistry()->get(fBuffer.getRawBuffer());

        return typeInfo;
    }
    else {
        reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::GrammarNotFound, uriStr);
    }

    return 0;
}


void TraverseSchema::processAttributes(const DOMElement* const elem,
                                       const DOMElement* const attElem,
                                       ComplexTypeInfo* const typeInfo,
                                       const bool isBaseAnyType) {

    // If we do not have a complexTypeInfo, then what is the point of
    // processing.
    if (typeInfo == 0) {
        return;
    }

    ComplexTypeInfo* baseTypeInfo = typeInfo->getBaseComplexTypeInfo();
    if (baseTypeInfo && baseTypeInfo->getPreprocessed())
        throw TraverseSchema::RecursingElement;

    const DOMElement* child = attElem;
    SchemaAttDef* attWildCard = 0;
    Janitor<SchemaAttDef> janAttWildCard(0);
    XercesAttGroupInfo* attGroupInfo = 0;
    ValueVectorOf<XercesAttGroupInfo*> attGroupList(4, fGrammarPoolMemoryManager);

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* childName = child->getLocalName();

        if (XMLString::equals(childName, SchemaSymbols::fgELT_ATTRIBUTE)) {
            if(attWildCard)
                reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::AnyAttributeBeforeAttribute);

            traverseAttributeDecl(child, typeInfo);
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_ATTRIBUTEGROUP)) {
            if(attWildCard)
                reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::AnyAttributeBeforeAttribute);

            attGroupInfo = traverseAttributeGroupDecl(child, typeInfo);
            if (attGroupInfo && !attGroupList.containsElement(attGroupInfo)) {
                attGroupList.addElement(attGroupInfo);
            }
        }
        else if (XMLString::equals(childName, SchemaSymbols::fgELT_ANYATTRIBUTE) ) {
            if(attWildCard)
                reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAnyAttribute);

            attWildCard = traverseAnyAttribute(child);
            janAttWildCard.reset(attWildCard);
        }
        else {
            reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::InvalidChildInComplexType, childName);
        }
    }

    // -------------------------------------------------------------
    // Handle wild card/any attribute
    // -------------------------------------------------------------
    int derivedBy = typeInfo->getDerivedBy();
    XMLSize_t attGroupListSize = attGroupList.size();

    if (attGroupListSize) {

        SchemaAttDef* completeWildCard = 0;
        Janitor<SchemaAttDef> janCompleteWildCard(0);
        XMLAttDef::DefAttTypes defAttType = XMLAttDef::Default;
        bool defAttTypeSet = false;

        for (XMLSize_t i=0; i < attGroupListSize; i++) {

            attGroupInfo = attGroupList.elementAt(i);
            XMLSize_t anyAttCount = attGroupInfo->anyAttributeCount();

            if (anyAttCount) {

                if (!defAttTypeSet) {

                    defAttType = (attWildCard) ? attWildCard->getDefaultType()
                                               : attGroupInfo->anyAttributeAt(0)->getDefaultType();
                    defAttTypeSet = true;
                }

                SchemaAttDef* attGroupWildCard = attGroupInfo->getCompleteWildCard();
                if (completeWildCard) {
                    attWildCardIntersection(completeWildCard, attGroupWildCard);
                }
                else {
                    completeWildCard = new (fGrammarPoolMemoryManager) SchemaAttDef(attGroupWildCard);
                    janCompleteWildCard.reset(completeWildCard);
                }
            }

        }

        if (completeWildCard) {

            if (attWildCard) {
                attWildCardIntersection(attWildCard, completeWildCard);
            }
            else {

                attWildCard = completeWildCard;
                janCompleteWildCard.orphan();
                janAttWildCard.reset(attWildCard);
            }

            attWildCard->setDefaultType(defAttType);
        }
    }

    SchemaAttDef* baseAttWildCard = (baseTypeInfo) ? baseTypeInfo->getAttWildCard() : 0;
    Janitor<SchemaAttDef> janBaseAttWildCard(0);

    if (derivedBy == SchemaSymbols::XSD_EXTENSION) {

        if (isBaseAnyType) {

            baseAttWildCard = new (fGrammarPoolMemoryManager) SchemaAttDef(XMLUni::fgZeroLenString,
                                               XMLUni::fgZeroLenString,
                                               fEmptyNamespaceURI, XMLAttDef::Any_Any,
                                               XMLAttDef::ProcessContents_Lax,
                                               fGrammarPoolMemoryManager);
            janBaseAttWildCard.reset(baseAttWildCard);
        }

        if (baseAttWildCard && attWildCard) {

            XMLAttDef::DefAttTypes saveDefType = attWildCard->getDefaultType();
            attWildCardUnion(attWildCard, baseAttWildCard);
            attWildCard->setDefaultType(saveDefType);
        }
    }

    // -------------------------------------------------------------
    // insert wildcard attribute
    // -------------------------------------------------------------
    if (attWildCard) {

        typeInfo->setAttWildCard(attWildCard);
        janAttWildCard.orphan();

        if (attWildCard->getType() == XMLAttDef::AttTypes_Unknown) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NotExpressibleWildCardIntersection);
        }
    }
    else if (baseAttWildCard && derivedBy == SchemaSymbols::XSD_EXTENSION) {

        if (isBaseAnyType) {

            typeInfo->setAttWildCard(baseAttWildCard);
            janBaseAttWildCard.orphan();
        }
        else {

            SchemaAttDef* newWildCard = new (fGrammarPoolMemoryManager) SchemaAttDef(baseAttWildCard);
            typeInfo->setAttWildCard(newWildCard);
        }
    }

    // -------------------------------------------------------------
    // Check attributes derivation OK
    // -------------------------------------------------------------
    bool baseWithAttributes = (baseTypeInfo && baseTypeInfo->hasAttDefs());
    bool childWithAttributes = (typeInfo->hasAttDefs() || typeInfo->getAttWildCard());

    if (derivedBy == SchemaSymbols::XSD_RESTRICTION && childWithAttributes) {

        if (!baseWithAttributes && !baseAttWildCard) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_1);
        }
        else {
            checkAttDerivationOK(elem, baseTypeInfo, typeInfo);
        }
    }

    // -------------------------------------------------------------
    // merge in base type's attribute decls
    // -------------------------------------------------------------
    if (baseTypeInfo && baseTypeInfo->hasAttDefs()) {

        SchemaAttDefList& baseAttList = (SchemaAttDefList&)
                                        baseTypeInfo->getAttDefList();

        for (XMLSize_t i=0; i<baseAttList.getAttDefCount(); i++) {

            SchemaAttDef& attDef = (SchemaAttDef&) baseAttList.getAttDef(i);
            QName* attName = attDef.getAttName();
            const XMLCh* localPart = attName->getLocalPart();

            // if found a duplicate, then skip the one from the base type
            if (typeInfo->getAttDef(localPart, attName->getURI()) != 0) {

                if (derivedBy == SchemaSymbols::XSD_EXTENSION) {
                    reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAttInDerivation, localPart);
                }

                continue;
            }

            if (attDef.getDefaultType() != XMLAttDef::Prohibited) {

                SchemaAttDef* newAttDef = new (fGrammarPoolMemoryManager) SchemaAttDef(attName->getPrefix(),
                                                           attName->getLocalPart(),
                                                           attName->getURI(),
                                                           attDef.getValue(),
                                                           attDef.getType(),
                                                           attDef.getDefaultType(),
                                                           attDef.getEnumeration(),
                                                           fGrammarPoolMemoryManager);

                newAttDef->setDatatypeValidator(attDef.getDatatypeValidator());
                typeInfo->addAttDef(newAttDef);

                if (attDef.getBaseAttDecl())
                    newAttDef->setBaseAttDecl(attDef.getBaseAttDecl());
                else
                    newAttDef->setBaseAttDecl(&attDef);
            }
        }
    }
}


void TraverseSchema::defaultComplexTypeInfo(ComplexTypeInfo* const typeInfo) {

    if (typeInfo) {

        typeInfo->setDerivedBy(0);
        typeInfo->setContentType(SchemaElementDecl::Any);
        typeInfo->setDatatypeValidator(0);
        typeInfo->setContentSpec(0);
        typeInfo->setBaseComplexTypeInfo(0);
        typeInfo->setBaseDatatypeValidator(0);
    }
}


InputSource* TraverseSchema::resolveSchemaLocation(const XMLCh* const loc,
                                const XMLResourceIdentifier::ResourceIdentifierType resourceIdentitiferType,
                                const XMLCh* const nameSpace) {

    // ------------------------------------------------------------------
    // Create an input source
    // ------------------------------------------------------------------
    InputSource* srcToFill = 0;
    XMLCh* normalizedURI = 0;
    if (loc) {
        XMLString::removeChar(loc, 0xFFFF, fBuffer);
        normalizedURI = fBuffer.getRawBuffer();
    }

    if (fEntityHandler){
        XMLResourceIdentifier resourceIdentifier(resourceIdentitiferType,
                            normalizedURI, nameSpace, 0, fSchemaInfo->getCurrentSchemaURL(), fLocator);
        srcToFill = fEntityHandler->resolveEntity(&resourceIdentifier);
    }

    //  If they didn't create a source via the entity resolver, then we
    //  have to create one on our own if we have the schemaLocation (with
    //  the update resolveEntity accepting nameSpace, a schemImport could
    //  pass a null schemaLocation)
    if (!srcToFill && loc) {
        if (fScanner->getDisableDefaultEntityResolution())
            return 0;

        XMLURL urlTmp(fMemoryManager);
        if ((!urlTmp.setURL(fSchemaInfo->getCurrentSchemaURL(), normalizedURI, urlTmp)) ||
            (urlTmp.isRelative()))
        {
           if (!fScanner->getStandardUriConformant())
           {
               XMLCh* tempURI = XMLString::replicate(normalizedURI, fMemoryManager);
               ArrayJanitor<XMLCh> tempURIName(tempURI, fMemoryManager);
               XMLUri::normalizeURI(tempURI, fBuffer);

                srcToFill = new (fMemoryManager) LocalFileInputSource
                (   fSchemaInfo->getCurrentSchemaURL()
                    , fBuffer.getRawBuffer()
                    , fMemoryManager
                );
           }
            else
                ThrowXMLwithMemMgr(MalformedURLException, XMLExcepts::URL_MalformedURL, fMemoryManager);
        }
        else
        {
             if (fScanner->getStandardUriConformant() && urlTmp.hasInvalidChar())
                ThrowXMLwithMemMgr(MalformedURLException, XMLExcepts::URL_MalformedURL, fMemoryManager);
             srcToFill = new (fMemoryManager) URLInputSource(urlTmp, fMemoryManager);
        }
    }

    return srcToFill;
}


void TraverseSchema::restoreSchemaInfo(SchemaInfo* const toRestore,
                                       SchemaInfo::ListType const aListType,
                                       const unsigned int saveScope) {


    if (aListType == SchemaInfo::IMPORT) { // restore grammar info

        int targetNSURI = toRestore->getTargetNSURI();

        fSchemaGrammar->setScopeCount (fScopeCount);
        fSchemaGrammar->setAnonTypeCount (fAnonXSTypeCount);

        fSchemaGrammar = (SchemaGrammar*) fGrammarResolver->getGrammar(toRestore->getTargetNSURIString());
        fScopeCount = fSchemaGrammar->getScopeCount ();
        fAnonXSTypeCount = fSchemaGrammar->getAnonTypeCount ();

        fTargetNSURI = targetNSURI;
        fCurrentScope = saveScope;
        fDatatypeRegistry = fSchemaGrammar->getDatatypeRegistry();
        fTargetNSURIString = fSchemaGrammar->getTargetNamespace();
        fGroupRegistry = fSchemaGrammar->getGroupInfoRegistry();
        fAttGroupRegistry = fSchemaGrammar->getAttGroupInfoRegistry();
        fAttributeDeclRegistry = fSchemaGrammar->getAttributeDeclRegistry();
        fComplexTypeRegistry = fSchemaGrammar->getComplexTypeRegistry();
        fValidSubstitutionGroups = fSchemaGrammar->getValidSubstitutionGroups();

    }

    fSchemaInfo = toRestore;
}


bool
TraverseSchema::emptiableParticle(const ContentSpecNode* const specNode) {

    if (!fFullConstraintChecking || !specNode || (specNode->getMinTotalRange() == 0)) {
        return true;
    }

    return false;
}

void TraverseSchema::checkFixedFacet(const DOMElement* const elem,
                                     const XMLCh* const facetName,
                                     const DatatypeValidator* const baseDV,
                                     unsigned int& flags)
{
    const XMLCh* fixedFacet = getElementAttValue(elem, SchemaSymbols::fgATT_FIXED);

    if ((fixedFacet && *fixedFacet) &&
        (XMLString::equals(fixedFacet, SchemaSymbols::fgATTVAL_TRUE)
         || XMLString::equals(fixedFacet, fgValueOne))) {

        if (XMLString::equals(SchemaSymbols::fgELT_LENGTH, facetName)) {
            flags |= DatatypeValidator::FACET_LENGTH;
        }
        if (XMLString::equals(SchemaSymbols::fgELT_MINLENGTH, facetName)) {
            flags |= DatatypeValidator::FACET_MINLENGTH;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_MAXLENGTH, facetName)) {
            flags |= DatatypeValidator::FACET_MAXLENGTH;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_MAXEXCLUSIVE, facetName)) {
            flags |= DatatypeValidator::FACET_MAXEXCLUSIVE;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_MAXINCLUSIVE, facetName)) {
            flags |= DatatypeValidator::FACET_MAXINCLUSIVE;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_MINEXCLUSIVE, facetName)) {
            flags |= DatatypeValidator::FACET_MINEXCLUSIVE;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_MININCLUSIVE, facetName)) {
            flags |= DatatypeValidator::FACET_MININCLUSIVE;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_TOTALDIGITS, facetName)) {
            flags |= DatatypeValidator::FACET_TOTALDIGITS;
        }
        else if (XMLString::equals(SchemaSymbols::fgELT_FRACTIONDIGITS, facetName)) {
            flags |= DatatypeValidator::FACET_FRACTIONDIGITS;
        }
        else if ((XMLString::equals(SchemaSymbols::fgELT_WHITESPACE, facetName)) &&
                 baseDV->getType() == DatatypeValidator::String) {
            flags |= DatatypeValidator::FACET_WHITESPACE;
        }
    }
}

void
TraverseSchema::buildValidSubstitutionListB(const DOMElement* const elem,
                                            SchemaElementDecl* const elemDecl,
                                            SchemaElementDecl* const subsElemDecl) {

    SchemaElementDecl* chainElemDecl = subsElemDecl->getSubstitutionGroupElem();

    while (chainElemDecl) {

        int chainElemURI = chainElemDecl->getURI();
        XMLCh* chainElemName = chainElemDecl->getBaseName();
        ValueVectorOf<SchemaElementDecl*>* validSubsElements =
            fValidSubstitutionGroups->get(chainElemName, chainElemURI);

        if (!validSubsElements) {

            if (fTargetNSURI == chainElemURI) {
                break; // an error must have occured
            }

            SchemaGrammar* aGrammar = (SchemaGrammar*) fGrammarResolver->getGrammar(fURIStringPool->getValueForId(chainElemURI));

            if (!aGrammar)
                break;

            validSubsElements = aGrammar->getValidSubstitutionGroups()->get(chainElemName, chainElemURI);

            if (!validSubsElements) {
                break;
            }

            validSubsElements = new (fGrammarPoolMemoryManager) ValueVectorOf<SchemaElementDecl*>(*validSubsElements);
            fValidSubstitutionGroups->put((void*) chainElemName, chainElemURI, validSubsElements);
        }

        if (validSubsElements->containsElement(elemDecl) ||
            !isSubstitutionGroupValid(elem, chainElemDecl, elemDecl->getComplexTypeInfo(),
                                      elemDecl->getDatatypeValidator(), 0, false)) {
            break;
        }

        validSubsElements->addElement(elemDecl);

        // update related subs. info in case of circular import
        BaseRefVectorEnumerator<SchemaInfo> importingEnum = fSchemaInfo->getImportingListEnumerator();

        while (importingEnum.hasMoreElements()) {

            const SchemaInfo& curRef = importingEnum.nextElement();
            SchemaGrammar* aGrammar = (SchemaGrammar*) fGrammarResolver->getGrammar(curRef.getTargetNSURIString());
            ValueVectorOf<SchemaElementDecl*>* subsElemList =
                aGrammar->getValidSubstitutionGroups()->get(chainElemName, chainElemURI);

            if (subsElemList && !subsElemList->containsElement(elemDecl)) {
                subsElemList->addElement(elemDecl);
            }
        }

        chainElemDecl = chainElemDecl->getSubstitutionGroupElem();
    }
}

void
TraverseSchema::buildValidSubstitutionListF(const DOMElement* const elem,
                                            SchemaElementDecl* const elemDecl,
                                            SchemaElementDecl* const subsElemDecl) {

    int elemURI = elemDecl->getURI();
    XMLCh* elemName = elemDecl->getBaseName();
    ValueVectorOf<SchemaElementDecl*>* validSubsElements =fValidSubstitutionGroups->get(elemName, elemURI);

    if (validSubsElements) {

        int subsElemURI = subsElemDecl->getURI();
        XMLCh* subsElemName = subsElemDecl->getBaseName();
        ValueVectorOf<SchemaElementDecl*>* validSubs = fValidSubstitutionGroups->get(subsElemName, subsElemURI);

        if (!validSubs) {

            if (fTargetNSURI == subsElemURI) {
                return; // an error must have occured
            }

            SchemaGrammar* aGrammar = (SchemaGrammar*) fGrammarResolver->getGrammar(fURIStringPool->getValueForId(subsElemURI));

            if (!aGrammar)
                return;

            validSubs = aGrammar->getValidSubstitutionGroups()->get(subsElemName, subsElemURI);

            if (!validSubs) {
                return;
            }

            validSubs = new (fGrammarPoolMemoryManager) ValueVectorOf<SchemaElementDecl*>(*validSubs);
            fValidSubstitutionGroups->put((void*) subsElemName, subsElemURI, validSubs);
        }

        XMLSize_t elemSize = validSubsElements->size();
        for (XMLSize_t i=0; i<elemSize; i++) {

            SchemaElementDecl* chainElem = validSubsElements->elementAt(i);

            if (validSubs->containsElement(chainElem)) {
                continue;
            }

            if (isSubstitutionGroupValid(elem, subsElemDecl, chainElem->getComplexTypeInfo(),
                                         chainElem->getDatatypeValidator(), 0, false)) {
                validSubs->addElement(chainElem);
                buildValidSubstitutionListB(elem, chainElem, subsElemDecl);
            }
        }
    }
}

void TraverseSchema::checkEnumerationRequiredNotation(const DOMElement* const elem,
                                                      const XMLCh* const name,
                                                      const XMLCh* const type) {

    const XMLCh* localPart = getLocalPart(type);

    if (XMLString::equals(localPart, XMLUni::fgNotationString)) {
        const XMLCh* prefix = getPrefix(type);
        const XMLCh* typeURI = resolvePrefixToURI(elem, prefix);

        if (XMLString::equals(typeURI, SchemaSymbols::fgURI_SCHEMAFORSCHEMA)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoNotationType, name);
        }
    }
}

XercesGroupInfo* TraverseSchema::processGroupRef(const DOMElement* const elem,
                                                 const XMLCh* const refName) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    DOMElement* content = checkContent(elem, XUtil::getFirstChildElement(elem), true);
    Janitor<XSAnnotation> janAnnot(fAnnotation);
    if (content != 0) {
        reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::NoContentForRef, SchemaSymbols::fgELT_GROUP);
    }

    const XMLCh* prefix = getPrefix(refName);
    const XMLCh* localPart = getLocalPart(refName);
    const XMLCh* uriStr = resolvePrefixToURI(elem, prefix);

    fBuffer.set(uriStr);
    fBuffer.append(chComma);
    fBuffer.append(localPart);

    unsigned int nameIndex = fStringPool->addOrFind(fBuffer.getRawBuffer());

    if (fCurrentGroupStack->containsElement(nameIndex)) {

        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoCircularDefinition, localPart);
        return 0;
    }

    XercesGroupInfo*     groupInfo = 0;
    SchemaInfo*          saveInfo = fSchemaInfo;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    unsigned int         saveScope = fCurrentScope;

    //if from another target namespace
    if (!XMLString::equals(uriStr, fTargetNSURIString)) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(uriStr);

        if (!isImportingNS(uriId)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, uriStr);
            return 0;
        }

        Grammar* aGrammar = fGrammarResolver->getGrammar(uriStr);

        if (!aGrammar || aGrammar->getGrammarType() != Grammar::SchemaGrammarType) {

            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::GrammarNotFound, uriStr);
            return 0;
        }

        groupInfo = ((SchemaGrammar*)aGrammar)->getGroupInfoRegistry()->get(fStringPool->getValueForId(nameIndex));

        if (!groupInfo) {

            SchemaInfo* impInfo = fSchemaInfo->getImportInfo(fURIStringPool->addOrFind(uriStr));

            if (!impInfo || impInfo->getProcessed()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNotFound,
                                  SchemaSymbols::fgELT_GROUP, uriStr, localPart);
                return 0;
            }

            infoType = SchemaInfo::IMPORT;
            restoreSchemaInfo(impInfo, infoType);
        }
    }
    else {
        groupInfo = fGroupRegistry->get(fStringPool->getValueForId(nameIndex));
    }

    if (!groupInfo) {

        DOMElement* groupElem = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_Group,
            SchemaSymbols::fgELT_GROUP, localPart, &fSchemaInfo);

        if (groupElem != 0) {

            groupInfo = traverseGroupDecl(groupElem);

            // restore schema information
            restoreSchemaInfo(saveInfo, infoType, saveScope);

            if (groupInfo && (fCurrentGroupInfo || infoType == SchemaInfo::IMPORT)) {
                copyGroupElements(elem, groupInfo, fCurrentGroupInfo,
                                  (infoType == SchemaInfo::IMPORT) ? fCurrentComplexType : 0);
            }

            return groupInfo;
        }
        else {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNotFound,
                              SchemaSymbols::fgELT_GROUP, uriStr, localPart);
        }

        // restore schema information, if necessary
        if (saveInfo != fSchemaInfo) {
            restoreSchemaInfo(saveInfo, infoType, saveScope);
        }
    }
    else {
        copyGroupElements(elem, groupInfo, fCurrentGroupInfo, fCurrentComplexType);
    }

    return groupInfo;
}


XercesAttGroupInfo*
TraverseSchema::processAttributeGroupRef(const DOMElement* const elem,
                                         const XMLCh* const refName,
                                         ComplexTypeInfo* const typeInfo) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0) {
        reportSchemaError(elem ,XMLUni::fgValidityDomain, XMLValid::NoContentForRef, SchemaSymbols::fgELT_ATTRIBUTEGROUP);
    }

    Janitor<XSAnnotation> janAnnot(fAnnotation);
    const                XMLCh* prefix = getPrefix(refName);
    const                XMLCh* localPart = getLocalPart(refName);
    const                XMLCh* uriStr = resolvePrefixToURI(elem, prefix);
    XercesAttGroupInfo*  attGroupInfo = 0;
    SchemaInfo*          saveInfo = fSchemaInfo;
    SchemaInfo::ListType infoType = SchemaInfo::INCLUDE;
    unsigned int         saveScope = fCurrentScope;

    if (!XMLString::equals(uriStr, fTargetNSURIString)) {

        // Make sure that we have an explicit import statement.
        // Clause 4 of Schema Representation Constraint:
        // http://www.w3.org/TR/xmlschema-1/#src-resolve
        unsigned int uriId = fURIStringPool->addOrFind(uriStr);

        if (!isImportingNS(uriId)) {

            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidNSReference, uriStr);
            return 0;
        }

        attGroupInfo = traverseAttributeGroupDeclNS(elem, uriStr, localPart);

        if (!attGroupInfo) {
            SchemaInfo* impInfo = fSchemaInfo->getImportInfo(fURIStringPool->addOrFind(uriStr));

            if (!impInfo || impInfo->getProcessed()) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNotFound,
                                  SchemaSymbols::fgELT_ATTRIBUTEGROUP, uriStr, localPart);
                return 0;
            }

            infoType = SchemaInfo::IMPORT;
            restoreSchemaInfo(impInfo, infoType);
        }
    }
    else {

        attGroupInfo = fAttGroupRegistry->get(localPart);
    }

    if (!attGroupInfo) {

        // traverse top level attributeGroup - if found
        DOMElement* attGroupElem = fSchemaInfo->getTopLevelComponent(SchemaInfo::C_AttributeGroup,
            SchemaSymbols::fgELT_ATTRIBUTEGROUP, localPart, &fSchemaInfo);

        if (attGroupElem != 0) {

            // circular attribute check
            if (fDeclStack->containsElement(attGroupElem)) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NoCircularDefinition, refName);
                return 0;
            }

            attGroupInfo = traverseAttributeGroupDecl(attGroupElem, typeInfo, true);

            if (attGroupInfo && fCurrentAttGroupInfo) {
                copyAttGroupAttributes(elem, attGroupInfo, fCurrentAttGroupInfo, 0);
            }

            // restore schema information, if necessary
            if (saveInfo != fSchemaInfo) {
                restoreSchemaInfo(saveInfo, infoType, saveScope);
            }

            return attGroupInfo;
        }
        else {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNotFound,
                              SchemaSymbols::fgELT_ATTRIBUTEGROUP, uriStr, localPart);
        }
    }

    if (attGroupInfo) {
        copyAttGroupAttributes(elem, attGroupInfo, fCurrentAttGroupInfo, typeInfo);
    }

    // restore schema information, if necessary
    if (saveInfo != fSchemaInfo) {
        restoreSchemaInfo(saveInfo, infoType);
    }

    return attGroupInfo;
}

void TraverseSchema::processElements(const DOMElement* const elem,
                                     ComplexTypeInfo* const baseTypeInfo,
                                     ComplexTypeInfo* const newTypeInfo) {

    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    XMLSize_t elemCount = baseTypeInfo->elementCount();

    if (elemCount) {

        int newTypeScope = newTypeInfo->getScopeDefined();
        int schemaURI = fURIStringPool->addOrFind(SchemaSymbols::fgURI_SCHEMAFORSCHEMA);

        for (XMLSize_t i=0; i < elemCount; i++) {

            SchemaGrammar*     aGrammar = fSchemaGrammar;
            SchemaElementDecl* elemDecl = baseTypeInfo->elementAt(i);
            int elemURI = elemDecl->getURI();
            unsigned int elemScope = elemDecl->getEnclosingScope();

            if (elemScope != Grammar::TOP_LEVEL_SCOPE) {

                if (elemURI != fTargetNSURI && elemURI != schemaURI && elemURI != fEmptyNamespaceURI) {
                    Grammar* aGrammar = fGrammarResolver->getGrammar(fURIStringPool->getValueForId(elemURI));

                    if (!aGrammar || aGrammar->getGrammarType() != Grammar::SchemaGrammarType) {
                        continue; // REVISIT - error message
                    }
                }

                const XMLCh*             localPart = elemDecl->getBaseName();
                const SchemaElementDecl* other = (SchemaElementDecl*)
                    aGrammar->getElemDecl(elemURI, localPart, 0, newTypeScope);

                if (other) {

                    if (elemDecl->getComplexTypeInfo() != other->getComplexTypeInfo()
                        || elemDecl->getDatatypeValidator() != other->getDatatypeValidator()) {
                        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateElementDeclaration, localPart);
                    }

                    continue;
                }
                elemDecl->setEnclosingScope(newTypeScope);
                ((SchemaGrammar*) aGrammar)->putGroupElemDecl(elemDecl);
                elemDecl->setEnclosingScope(elemScope);
            }

            newTypeInfo->addElement(elemDecl);
        }
    }
}

void TraverseSchema::processElements(const DOMElement* const elem,
                                     XercesGroupInfo* const fromGroup,
                                     ComplexTypeInfo* const typeInfo)
{
    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    XMLSize_t elemCount = fromGroup->elementCount();
    int newScope = typeInfo->getScopeDefined();

    for (XMLSize_t i = 0; i < elemCount; i++) {

        SchemaElementDecl* elemDecl = fromGroup->elementAt(i);
        unsigned int elemScope = elemDecl->getEnclosingScope();

        if (elemScope != Grammar::TOP_LEVEL_SCOPE)
        {
            int                      elemURI = elemDecl->getURI();
            const XMLCh*             localPart = elemDecl->getBaseName();
            const SchemaElementDecl* other = (SchemaElementDecl*)
                    fSchemaGrammar->getElemDecl(elemURI, localPart, 0, newScope);

            if (other)
            {
                if (elemDecl->getComplexTypeInfo() != other->getComplexTypeInfo()
                    || elemDecl->getDatatypeValidator() != other->getDatatypeValidator())
                {
                   reportSchemaError(
                       elem, XMLUni::fgXMLErrDomain
                       , XMLErrs::DuplicateElementDeclaration, localPart);
                }

                continue;
            }

            elemDecl->setEnclosingScope(newScope);
            fSchemaGrammar->putGroupElemDecl(elemDecl);
            elemDecl->setEnclosingScope(elemScope);
            typeInfo->addElement(elemDecl);
        }
    }
}


void TraverseSchema::copyGroupElements(const DOMElement* const elem,
                                       XercesGroupInfo* const fromGroup,
                                       XercesGroupInfo* const toGroup,
                                       ComplexTypeInfo* const typeInfo) {

    XMLSize_t elemCount = fromGroup->elementCount();
    int newScope = (typeInfo) ? typeInfo->getScopeDefined() : 0;

    if (typeInfo)
        fromGroup->setCheckElementConsistency(false);

    for (XMLSize_t i = 0; i < elemCount; i++) {

        SchemaElementDecl*       elemDecl = fromGroup->elementAt(i);

        if (typeInfo) {

            unsigned int elemScope = elemDecl->getEnclosingScope();

            if (elemScope != Grammar::TOP_LEVEL_SCOPE) {

                int                      elemURI = elemDecl->getURI();
                const XMLCh*             localPart = elemDecl->getBaseName();
                const SchemaElementDecl* other = (SchemaElementDecl*)
                        fSchemaGrammar->getElemDecl(elemURI, localPart, 0, newScope);

                if (other) {

                    if (elemDecl->getComplexTypeInfo() != other->getComplexTypeInfo()
                        || elemDecl->getDatatypeValidator() != other->getDatatypeValidator()) {
                       reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateElementDeclaration, localPart);
                    }

                    continue;
                }

                elemDecl->setEnclosingScope(newScope);
                fSchemaGrammar->putGroupElemDecl(elemDecl);
                elemDecl->setEnclosingScope(elemScope);
            }

            typeInfo->addElement(elemDecl);
        }

        if (toGroup) {
            toGroup->addElement(elemDecl);
        }
    }
}

void TraverseSchema::copyAttGroupAttributes(const DOMElement* const elem,
                                            XercesAttGroupInfo* const fromAttGroup,
                                            XercesAttGroupInfo* const toAttGroup,
                                            ComplexTypeInfo* const typeInfo) {

    XMLSize_t attCount = fromAttGroup->attributeCount();

    for (XMLSize_t i=0; i < attCount; i++) {

        SchemaAttDef* attDef = fromAttGroup->attributeAt(i);
        QName* attName = attDef->getAttName();
        const XMLCh* localPart = attName->getLocalPart();
        DatatypeValidator* attDV = attDef->getDatatypeValidator();

        if (typeInfo) {

            if (typeInfo->getAttDef(localPart, attName->getURI())) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAttribute, localPart);
                continue;
            }

            if (attDV && attDV->getType() == DatatypeValidator::ID) {

                if (typeInfo->containsAttWithTypeId()) {

                    reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttDeclPropCorrect5, localPart);
                    continue;
                }

                typeInfo->setAttWithTypeId(true);
            }

            SchemaAttDef* clonedAttDef = new (fGrammarPoolMemoryManager) SchemaAttDef(attDef);
            typeInfo->addAttDef(clonedAttDef);

            if (!clonedAttDef->getBaseAttDecl())
                clonedAttDef->setBaseAttDecl(attDef);

            if (toAttGroup) {
                toAttGroup->addAttDef(attDef, true);
            }
        }
        else {

            if (toAttGroup->containsAttribute(localPart, attName->getURI())) {

                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DuplicateAttribute, localPart);
                continue;
            }

            if (attDV && attDV->getType() == DatatypeValidator::ID) {

                if (toAttGroup->containsTypeWithId()) {

                    reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::AttGrpPropCorrect3, localPart);
                    continue;
                }

                toAttGroup->setTypeWithId(true);
            }

            toAttGroup->addAttDef(attDef, true);
        }
    }

    if (toAttGroup) {
        XMLSize_t anyAttCount = fromAttGroup->anyAttributeCount();

        for (XMLSize_t j=0; j < anyAttCount; j++) {
            toAttGroup->addAnyAttDef(fromAttGroup->anyAttributeAt(j), true);
        }
    }
}

void
TraverseSchema::attWildCardIntersection(SchemaAttDef* const resultWildCard,
                                        const SchemaAttDef* const compareWildCard) {

    XMLAttDef::AttTypes typeR = resultWildCard->getType();
    XMLAttDef::AttTypes typeC = compareWildCard->getType();

    //If either O1 or O2 is any, then the other must be the value.
    if (typeC == XMLAttDef::Any_Any ||
        typeR == XMLAttDef::AttTypes_Unknown) {
        return;
    }

    if (typeR == XMLAttDef::Any_Any ||
        typeC == XMLAttDef::AttTypes_Unknown) {

        resultWildCard->resetNamespaceList();
        copyWildCardData(compareWildCard, resultWildCard);
        return;
    }

    // If either O1 or O2 is a pair of not and a namespace name and the other
    // is a set, then that set, minus the negated namespace name if it was in
    // is the value
    if ((typeC == XMLAttDef::Any_Other && typeR == XMLAttDef::Any_List) ||
        (typeR == XMLAttDef::Any_Other && typeC == XMLAttDef::Any_List)) {

        unsigned int compareURI = 0;
        ValueVectorOf<unsigned int>* nameURIList = 0;

        if (typeC == XMLAttDef::Any_List) {
            nameURIList = compareWildCard->getNamespaceList();
            compareURI = resultWildCard->getAttName()->getURI();
        }
        else {
            nameURIList = resultWildCard->getNamespaceList();
            compareURI = compareWildCard->getAttName()->getURI();
        }

        XMLSize_t listSize = (nameURIList) ? nameURIList->size() : 0;

        if (listSize) {

            bool                        found = false;
            ValueVectorOf<unsigned int> tmpURIList(listSize, fGrammarPoolMemoryManager);

            for (XMLSize_t i=0; i < listSize; i++) {

                unsigned int nameURI = nameURIList->elementAt(i);

                if (nameURI != compareURI &&
                    nameURI != (unsigned int) fEmptyNamespaceURI) {
                    tmpURIList.addElement(nameURI);
                }
                else {
                    found = true;
                }
            }

            if (found || typeC == XMLAttDef::Any_List) {
                resultWildCard->setNamespaceList(&tmpURIList);
            }
        }

        if (typeC == XMLAttDef::Any_List) {
            copyWildCardData(compareWildCard, resultWildCard);
        }

        return;
    }

    // If both O1 and O2 are sets, then the intersection of those sets must be
    // the value.
    if (typeR == XMLAttDef::Any_List && typeC == XMLAttDef::Any_List) {

        ValueVectorOf<unsigned int>* uriListR = resultWildCard->getNamespaceList();
        ValueVectorOf<unsigned int>* uriListC = compareWildCard->getNamespaceList();
        XMLSize_t listSize = (uriListC) ? uriListC->size() : 0;

        if (listSize) {

            ValueVectorOf<unsigned int> tmpURIList(listSize, fGrammarPoolMemoryManager);

            for (XMLSize_t i=0; i < listSize; i++) {

                unsigned int uriName = uriListC->elementAt(i);

                if (uriListR && uriListR->containsElement(uriName)) {
                    tmpURIList.addElement(uriName);
                }
            }

            resultWildCard->setNamespaceList(&tmpURIList);
        }
        else {
            resultWildCard->resetNamespaceList();
        }

        return;
    }

    // If the two are negations of different namespace names, then:
    //  if one is a negation of absent, then result is negation of namespace
    //  else intersection is not expressible.
    if (typeR == XMLAttDef::Any_Other && typeC == XMLAttDef::Any_Other) {

        QName* qnameR = resultWildCard->getAttName();

        if (qnameR->getURI() != compareWildCard->getAttName()->getURI()) {

            if (qnameR->getURI() == (unsigned int)fEmptyNamespaceURI) {
                qnameR->setURI(compareWildCard->getAttName()->getURI());
            }
            else if (compareWildCard->getAttName()->getURI() != (unsigned int)fEmptyNamespaceURI) {

                qnameR->setURI(fEmptyNamespaceURI);
                resultWildCard->setType(XMLAttDef::AttTypes_Unknown);
            }
        }
    }
}


void
TraverseSchema::attWildCardUnion(SchemaAttDef* const resultWildCard,
                                 const SchemaAttDef* const compareWildCard) {

    XMLAttDef::AttTypes typeR = resultWildCard->getType();
    XMLAttDef::AttTypes typeC = compareWildCard->getType();

    //If either O1 or O2 is any, then the other must be the value.
    if (typeR == XMLAttDef::Any_Any ||
        typeR == XMLAttDef::AttTypes_Unknown) {
        return;
    }

    if (typeC == XMLAttDef::Any_Any ||
        typeC == XMLAttDef::AttTypes_Unknown) {

        resultWildCard->resetNamespaceList();
        copyWildCardData(compareWildCard, resultWildCard);
        return;
    }

    // If both O1 and O2 are sets, then the union of those sets must be
    // the value.
    if (typeR == XMLAttDef::Any_List && typeC == XMLAttDef::Any_List) {

        ValueVectorOf<unsigned int>* uriListR = resultWildCard->getNamespaceList();
        ValueVectorOf<unsigned int>* uriListC = compareWildCard->getNamespaceList();
        XMLSize_t listSizeC = (uriListC) ? uriListC->size() : 0;

        if (listSizeC) {

            if (!uriListR || !uriListR->size()) {

                resultWildCard->setNamespaceList(uriListC);
                return;
            }

            ValueVectorOf<unsigned int> tmpURIList(*uriListR);

            for (XMLSize_t i = 0; i < listSizeC; i++) {

                unsigned int uriName = uriListC->elementAt(i);

                if (!uriListR->containsElement(uriName)) {
                    tmpURIList.addElement(uriName);
                }
            }

            resultWildCard->setNamespaceList(&tmpURIList);
        }

        return;
    }

    // If the two are negations of different namespace names, then not and
    // absent must be the value
    if (typeR == XMLAttDef::Any_Other && typeC == XMLAttDef::Any_Other) {

        QName* qnameR = resultWildCard->getAttName();

        if (qnameR->getURI() != compareWildCard->getAttName()->getURI()) {

            qnameR->setURI(fEmptyNamespaceURI);
            resultWildCard->setType(XMLAttDef::Any_Other);
        }
    }

    // 5. If either O1 or O2 is a pair of not and a namespace name and the
    //    other is a set, then:
    //    1. If the set includes both the negated namespace name and absent
    //       then any must be the value.
    //    2. If the set includes the negated namespace name but not absent,
    //       then a pair of not and absent must be the value.
    //    3. If the set includes absent but not the negated namespace name,
    //       then the union is not expressible.
    //    4. If the set does not include either the negated namespace or
    //       absent, then whichever of O1 or O2 is a pair of not and a
    //       namespace name.
    //
    // 6. If either O1 or O2 is a pair of not and absent and the other is a
    //    set, then:
    //    1. If the set includes absent then any must be the value.
    //    2. If the set does not include absent, then a pair of not and
    //       absent.
    if ((typeC == XMLAttDef::Any_Other && typeR == XMLAttDef::Any_List) ||
        (typeR == XMLAttDef::Any_Other && typeC == XMLAttDef::Any_List)) {

        ValueVectorOf<unsigned int>* nameURIList = 0;
        QName* attNameR = resultWildCard->getAttName();
        unsigned int compareURI = 0;

        if (typeC == XMLAttDef::Any_List) {
            nameURIList = compareWildCard->getNamespaceList();
            compareURI = attNameR->getURI();
        }
        else {
            nameURIList = resultWildCard->getNamespaceList();
            compareURI = compareWildCard->getAttName()->getURI();
        }

        // 6. not and absent
        if (compareURI == (unsigned int) fEmptyNamespaceURI) {

            if (nameURIList) {

                // 6.1 result is any
                if (nameURIList->containsElement(compareURI)) {

                    resultWildCard->setType(XMLAttDef::Any_Any);
                    attNameR->setURI(fEmptyNamespaceURI);
                }
                // 6.2 result is not and absent
                else if (typeR == XMLAttDef::Any_List){

                    resultWildCard->setType(XMLAttDef::Any_Other);
                    attNameR->setURI(fEmptyNamespaceURI);
                }
            }
            // 6.2 result is not and absent
            else if (typeR == XMLAttDef::Any_List) {

                resultWildCard->setType(XMLAttDef::Any_Other);
                attNameR->setURI(fEmptyNamespaceURI);
            }
        }
        // 5. not and namespace
        else {

            // 5.3 result is not expressible
            if (!nameURIList) {
                resultWildCard->setType(XMLAttDef::AttTypes_Unknown);
                attNameR->setURI(fEmptyNamespaceURI);
            }
            else {
                bool containsAbsent =
                    nameURIList->containsElement(fEmptyNamespaceURI);
                bool containsNamespace =
                    nameURIList->containsElement(compareURI);

                // 5.1 result is any
                if (containsAbsent && containsNamespace) {

                    resultWildCard->setType(XMLAttDef::Any_Any);
                    attNameR->setURI(fEmptyNamespaceURI);
                }
                // 5.2 result is not and absent
                else if (containsNamespace) {

                    resultWildCard->setType(XMLAttDef::Any_Other);
                    attNameR->setURI(fEmptyNamespaceURI);
                }
                // 5.3 result is not expressible
                else if (containsAbsent) {

                    resultWildCard->setType(XMLAttDef::AttTypes_Unknown);
                    attNameR->setURI(fEmptyNamespaceURI);
                }
                // 5.4. whichever is not and namespace
                else if (typeR == XMLAttDef::Any_List) {

                    resultWildCard->setType(XMLAttDef::Any_Other);
                    attNameR->setURI(compareURI);
                }
            }
        }

        resultWildCard->resetNamespaceList();
    }
}


void TraverseSchema::checkAttDerivationOK(const DOMElement* const elem,
                                          const ComplexTypeInfo* const baseTypeInfo,
                                          const ComplexTypeInfo* const childTypeInfo) {

    SchemaAttDefList& childAttList = (SchemaAttDefList&) childTypeInfo->getAttDefList();
    const SchemaAttDef* baseAttWildCard = baseTypeInfo->getAttWildCard();

    for (XMLSize_t i=0; i<childAttList.getAttDefCount(); i++) {

        SchemaAttDef& childAttDef = (SchemaAttDef&) childAttList.getAttDef(i);
        QName* childAttName = childAttDef.getAttName();
        const XMLCh* childLocalPart = childAttName->getLocalPart();
        const SchemaAttDef* baseAttDef = baseTypeInfo->getAttDef(childLocalPart, childAttName->getURI());

        if (baseAttDef) {

            XMLAttDef::DefAttTypes baseAttDefType = baseAttDef->getDefaultType();
            XMLAttDef::DefAttTypes childAttDefType = childAttDef.getDefaultType();

            // Constraint 2.1.1 & 3 + check for prohibited base attribute
            if (baseAttDefType == XMLAttDef::Prohibited
                && childAttDefType != XMLAttDef::Prohibited) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_8, childLocalPart);
            }

            if ((baseAttDefType & XMLAttDef::Required)
                && !(childAttDefType & XMLAttDef::Required)) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_2, childLocalPart);
            }

            // if the attribute in the derived type is prohibited, and it didn't try to override a required attribute,
            // it's ok and shouldn't be tested for data type or fixed value
            if (childAttDefType == XMLAttDef::Prohibited)
                continue;

            // Constraint 2.1.2
            DatatypeValidator* baseDV = baseAttDef->getDatatypeValidator();
            DatatypeValidator* childDV = childAttDef.getDatatypeValidator();
            if (!baseDV || !baseDV->isSubstitutableBy(childDV)) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_3, childLocalPart);
            }

            // Constraint 2.1.3
            if ((baseAttDefType & XMLAttDef::Fixed) &&
                (!(childAttDefType & XMLAttDef::Fixed) ||
                 !XMLString::equals(baseAttDef->getValue(), childAttDef.getValue()))) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_4, childLocalPart);
            }
        }
        // Constraint 2.2
        else if (!baseAttWildCard ||
                 !wildcardAllowsNamespace(baseAttWildCard, childAttName->getURI())) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_5, childLocalPart);
        }
    }

    // Constraint 4
    const SchemaAttDef* childAttWildCard = childTypeInfo->getAttWildCard();

    if (childAttWildCard) {

        if (!baseAttWildCard) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_6);
        }
        else if (!isWildCardSubset(baseAttWildCard, childAttWildCard)) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_7);
        }
        else if (childAttWildCard->getDefaultType() < baseAttWildCard->getDefaultType()) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_9);
        }
    }
}

void TraverseSchema::checkAttDerivationOK(const DOMElement* const elem,
                                          const XercesAttGroupInfo* const baseAttGrpInfo,
                                          const XercesAttGroupInfo* const childAttGrpInfo) {

    XMLSize_t baseAttCount = baseAttGrpInfo->attributeCount();
    XMLSize_t baseAnyAttCount = baseAttGrpInfo->anyAttributeCount();
    XMLSize_t childAttCount = childAttGrpInfo->attributeCount();
    XMLSize_t childAnyAttCount = childAttGrpInfo->anyAttributeCount();

    if ((childAttCount || childAnyAttCount) && (!baseAttCount && !baseAnyAttCount)) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_1);
    }

    const SchemaAttDef* baseAttWildCard = (baseAnyAttCount) ? baseAttGrpInfo->anyAttributeAt(0) : 0;

    for (XMLSize_t i=0; i<childAttCount; i++) {

        const SchemaAttDef* childAttDef = childAttGrpInfo->attributeAt(i);
        QName* childAttName = childAttDef->getAttName();
        const XMLCh* childLocalPart = childAttName->getLocalPart();
        const SchemaAttDef* baseAttDef = baseAttGrpInfo->getAttDef(childLocalPart, childAttName->getURI());

        if (baseAttDef) {

            XMLAttDef::DefAttTypes baseAttDefType = baseAttDef->getDefaultType();
            XMLAttDef::DefAttTypes childAttDefType = childAttDef->getDefaultType();

            // Constraint 2.1.1 & 3 + check for prohibited base attribute
            if (baseAttDefType == XMLAttDef::Prohibited
                && childAttDefType != XMLAttDef::Prohibited) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_8, childLocalPart);
            }

            if ((baseAttDefType & XMLAttDef::Required)
                && !(childAttDefType & XMLAttDef::Required)) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_2, childLocalPart);
            }

            // if the attribute in the derived type is prohibited, and it didn't try to override a required attribute,
            // it's ok and shouldn't be tested for data type or fixed value
            if (childAttDefType == XMLAttDef::Prohibited)
                continue;

            // Constraint 2.1.2
            DatatypeValidator* baseDV = baseAttDef->getDatatypeValidator();
            DatatypeValidator* childDV = childAttDef->getDatatypeValidator();
            if (!baseDV || !baseDV->isSubstitutableBy(childDV)) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_3, childLocalPart);
            }

            // Constraint 2.1.3
            if ((baseAttDefType & XMLAttDef::Fixed) &&
                (!(childAttDefType & XMLAttDef::Fixed) ||
                 !XMLString::equals(baseAttDef->getValue(), childAttDef->getValue()))) {
                reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_4, childLocalPart);
            }
        }
        // Constraint 2.2
        else if (!baseAttWildCard ||
                 !wildcardAllowsNamespace(baseAttWildCard, childAttName->getURI())) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_5, childLocalPart);
        }
    }

    // Constraint 4
    const SchemaAttDef* childAttWildCard = (childAnyAttCount) ? childAttGrpInfo->anyAttributeAt(0) : 0;

    if (childAttWildCard) {

        if (!baseAttWildCard) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_6);
        }
        else if (!isWildCardSubset(baseAttWildCard, childAttWildCard)) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_7);
        }
        else if (childAttWildCard->getDefaultType() < baseAttWildCard->getDefaultType()) {
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::BadAttDerivation_9);
        }
    }
}

bool TraverseSchema::wildcardAllowsNamespace(const SchemaAttDef* const wildCard,
                                             const unsigned int nameURI) {

    XMLAttDef::AttTypes wildCardType = wildCard->getType();

    // The constraint must be any
    if (wildCardType == XMLAttDef::Any_Any) {
        return true;
    }

    // All of the following must be true:
    //    2.1 The constraint is a pair of not and a namespace name or ·absent
    //    2.2 The value must not be identical to the ·namespace test·.
    //    2.3 The value must not be ·absent·.
    if (wildCardType == XMLAttDef::Any_Other &&
        ((int) nameURI) != fEmptyNamespaceURI &&
        wildCard->getAttName()->getURI() != nameURI) {
        return true;
    }

    // The constraint is a set, and the value is identical to one of the
    // members of the set
    if (wildCardType == XMLAttDef::Any_List) {

        ValueVectorOf<unsigned int>* nameURIList = wildCard->getNamespaceList();

        if (nameURIList->containsElement(nameURI)) {
            return true;
        }
    }

    return false;
}

bool TraverseSchema::isWildCardSubset(const SchemaAttDef* const baseAttWildCard,
                                      const SchemaAttDef* const childAttWildCard) {

    XMLAttDef::AttTypes baseWildCardType = baseAttWildCard->getType();
    XMLAttDef::AttTypes childWildCardType = childAttWildCard->getType();

    if (baseWildCardType == XMLAttDef::AttTypes_Unknown ||
        childWildCardType == XMLAttDef::AttTypes_Unknown) {
        return false;
    }

    // 1 super must be any.
    if (baseWildCardType == XMLAttDef::Any_Any) {
        return true;
    }

    // 2 All of the following must be true:
    //     2.1 sub must be a pair of not and a namespace name or ·absent·.
    //     2.2 super must be a pair of not and the same value.
    if (childWildCardType == XMLAttDef::Any_Other && baseWildCardType == XMLAttDef::Any_Other &&
        childAttWildCard->getAttName()->getURI() == baseAttWildCard->getAttName()->getURI()) {
        return true;
    }

    // 3 All of the following must be true:
    //     3.1 sub must be a set whose members are either namespace names or ·absent·.
    //     3.2 One of the following must be true:
    //          3.2.1 super must be the same set or a superset thereof.
    //          3.2.2 super must be a pair of not and a namespace name or ·absent· and
    //                 that value must not be in sub's set.
    if (childWildCardType == XMLAttDef::Any_List) {

        ValueVectorOf<unsigned int>* childURIList = childAttWildCard->getNamespaceList();

        if (baseWildCardType == XMLAttDef::Any_List) {

            ValueVectorOf<unsigned int>* baseURIList = baseAttWildCard->getNamespaceList();
            XMLSize_t childListSize = (childURIList) ? childURIList->size() : 0;

            for (XMLSize_t i=0; i<childListSize; i++) {
                if (!baseURIList->containsElement(childURIList->elementAt(i))) {
                    return false;
                }
            }

            return true;
        }
        else if (baseWildCardType == XMLAttDef::Any_Other) {
            if (!childURIList->containsElement(baseAttWildCard->getAttName()->getURI())) {
                return true;
            }
        }
    }

    return false;
}

bool TraverseSchema::openRedefinedSchema(const DOMElement* const redefineElem) {

    if (fPreprocessedNodes->containsKey(redefineElem)) {

        restoreSchemaInfo(fPreprocessedNodes->get(redefineElem));
        return true;
    }

    // ------------------------------------------------------------------
    // Get 'schemaLocation' attribute
    // ------------------------------------------------------------------
    const XMLCh* schemaLocation = getElementAttValue(redefineElem, SchemaSymbols::fgATT_SCHEMALOCATION, DatatypeValidator::AnyURI);

    if (!schemaLocation || !*schemaLocation) {
        reportSchemaError(redefineElem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNoSchemaLocation, SchemaSymbols::fgELT_REDEFINE);
        return false;
    }

    // ------------------------------------------------------------------
    // Resolve schema location
    // ------------------------------------------------------------------
    fLocator->setValues(fSchemaInfo->getCurrentSchemaURL(), 0,
                        ((XSDElementNSImpl*) redefineElem)->getLineNo(),
                        ((XSDElementNSImpl*) redefineElem)->getColumnNo());
    InputSource*         srcToFill = resolveSchemaLocation(schemaLocation,
                                        XMLResourceIdentifier::SchemaRedefine);
    Janitor<InputSource> janSrc(srcToFill);

    // Nothing to do
    if (!srcToFill) {
        return false;
    }

    const XMLCh* includeURL = srcToFill->getSystemId();

    if (XMLString::equals(includeURL, fSchemaInfo->getCurrentSchemaURL())) {
        return false;
    }

    SchemaInfo* redefSchemaInfo = fCachedSchemaInfoList->get(includeURL, fTargetNSURI);

    if (!redefSchemaInfo && fSchemaInfoList != fCachedSchemaInfoList)
      redefSchemaInfo = fSchemaInfoList->get(includeURL, fTargetNSURI);

    if (redefSchemaInfo) {

        reportSchemaError(redefineElem, XMLUni::fgXMLErrDomain, XMLErrs::InvalidRedefine, includeURL);
        return false;
    }

    // ------------------------------------------------------------------
    // Parse input source
    // ------------------------------------------------------------------
    if (!fParser)
        fParser = new (fGrammarPoolMemoryManager) XSDDOMParser(0,fGrammarPoolMemoryManager, 0);

    fParser->setValidationScheme(XercesDOMParser::Val_Never);
    fParser->setDoNamespaces(true);
    fParser->setUserEntityHandler(fEntityHandler);
    fParser->setUserErrorReporter(fErrorReporter);

    // Should just issue warning if the schema is not found
    bool flag = srcToFill->getIssueFatalErrorIfNotFound();
    srcToFill->setIssueFatalErrorIfNotFound(false);

    fParser->parse(*srcToFill) ;

    // Reset the InputSource
    srcToFill->setIssueFatalErrorIfNotFound(flag);

    if (fParser->getSawFatal() && fScanner->getExitOnFirstFatal())
        reportSchemaError(redefineElem, XMLUni::fgXMLErrDomain, XMLErrs::SchemaScanFatalError);

    // ------------------------------------------------------------------
    // Get root element
    // ------------------------------------------------------------------
    DOMDocument* document = fParser->getDocument();

    if (!document) {
        return false;
    }
    else {

        DOMElement* root = document->getDocumentElement();

        if (root == 0) {
            return false;
        }

        const XMLCh* targetNSURIString = root->getAttribute(SchemaSymbols::fgATT_TARGETNAMESPACE);

        // check to see if targetNameSpace is right
        if (*targetNSURIString
            && !XMLString::equals(targetNSURIString,fTargetNSURIString)){
            reportSchemaError(root, XMLUni::fgXMLErrDomain, XMLErrs::RedefineNamespaceDifference,
                              schemaLocation, targetNSURIString);
            return false;
        }

        // if targetNamespace is empty, change it to redefin'g schema
        // targetNamespace
        if (!*targetNSURIString && root->getAttributeNode(XMLUni::fgXMLNSString) == 0
            && fTargetNSURI != fEmptyNamespaceURI) {
            root->setAttribute(XMLUni::fgXMLNSString, fTargetNSURIString);
        }

        // --------------------------------------------------------
        // Update schema information with redefined schema
        // --------------------------------------------------------
        redefSchemaInfo = fSchemaInfo;
        Janitor<SchemaInfo> newSchemaInfo(new (fMemoryManager) SchemaInfo(0, 0, 0, fTargetNSURI,
                                     0,
                                     includeURL,
                                     fTargetNSURIString, root,
                                     fScanner,
                                     fGrammarPoolMemoryManager));
        fSchemaInfo = newSchemaInfo.get();

        fSchemaInfo->getNamespaceScope()->reset(fEmptyNamespaceURI);
        // Add mapping for the xml prefix
        fSchemaInfo->getNamespaceScope()->addPrefix(XMLUni::fgXMLString, fURIStringPool->addOrFind(XMLUni::fgXMLURIName));

        traverseSchemaHeader(root);
        fSchemaInfoList->put((void*) fSchemaInfo->getCurrentSchemaURL(), fSchemaInfo->getTargetNSURI(), fSchemaInfo);
        newSchemaInfo.release();
        redefSchemaInfo->addSchemaInfo(fSchemaInfo, SchemaInfo::INCLUDE);
        fPreprocessedNodes->put((void*) redefineElem, fSchemaInfo);
    }

    return true;
}

void TraverseSchema::renameRedefinedComponents(const DOMElement* const redefineElem,
                                               SchemaInfo* const redefiningSchemaInfo,
                                               SchemaInfo* const redefinedSchemaInfo) {

    DOMElement* child = XUtil::getFirstChildElement(redefineElem);

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* childName = child->getLocalName();

        if (XMLString::equals(childName, SchemaSymbols::fgELT_ANNOTATION)) {
            continue;
        }

        // if component already redefined skip
        const XMLCh* typeName = getElementAttValue(child, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);

        fBuffer.set(fTargetNSURIString);
        fBuffer.append(chComma);
        fBuffer.append(typeName);

        if (fRedefineComponents->containsKey(childName, fStringPool->addOrFind(fBuffer.getRawBuffer()))) {
            continue;
        }

        // Rename
        const XMLCh* tmpChildName = fStringPool->getValueForId(fStringPool->addOrFind(childName));

        if (validateRedefineNameChange(child, tmpChildName, typeName, 1, redefiningSchemaInfo)) {
            fixRedefinedSchema(child, redefinedSchemaInfo, tmpChildName, typeName, 1);
        }
        else {
            redefiningSchemaInfo->addFailedRedefine(child);
        }
    }
}

bool TraverseSchema::validateRedefineNameChange(const DOMElement* const redefineChildElem,
                                                const XMLCh* const redefineChildComponentName,
                                                const XMLCh* const redefineChildTypeName,
                                                const int redefineNameCounter,
                                                SchemaInfo* const redefiningSchemaInfo) {

    const XMLCh* baseTypeName = 0;
    unsigned int typeNameId = fStringPool->addOrFind(redefineChildTypeName);

    fBuffer.set(fTargetNSURIString);
    fBuffer.append(chComma);
    fBuffer.append(redefineChildTypeName);

    int   fullTypeNameId = fStringPool->addOrFind(fBuffer.getRawBuffer());
    const XMLCh* typeNameStr = fStringPool->getValueForId(fullTypeNameId);

    restoreSchemaInfo(redefiningSchemaInfo);

    if (XMLString::equals(redefineChildComponentName,SchemaSymbols::fgELT_SIMPLETYPE)) {

        if (fDatatypeRegistry->getDatatypeValidator(typeNameStr)) {
            return false;
        }

        DOMElement* grandKid = XUtil::getFirstChildElement(redefineChildElem);

        if (grandKid && XMLString::equals(grandKid->getLocalName(), SchemaSymbols::fgELT_ANNOTATION)) {
            grandKid = XUtil::getNextSiblingElement(grandKid);
        }

        if (grandKid == 0) {

            reportSchemaError(redefineChildElem, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidSimpleType);
            return false;
        }
        else if(!XMLString::equals(grandKid->getLocalName(), SchemaSymbols::fgELT_RESTRICTION)) {

            reportSchemaError(grandKid, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidSimpleType);
            return false;
        }

        baseTypeName = getElementAttValue(grandKid, SchemaSymbols::fgATT_BASE, DatatypeValidator::QName);
        const XMLCh* prefix = getPrefix(baseTypeName);
        const XMLCh* localPart = getLocalPart(baseTypeName);
        const XMLCh* uriStr = resolvePrefixToURI(grandKid, prefix);

        if (fTargetNSURI != (int) fURIStringPool->addOrFind(uriStr)
            || fStringPool->addOrFind(localPart) != typeNameId) {
            reportSchemaError(grandKid, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidSimpleTypeBase);
            return false;
        }

        // now we have to do the renaming...
        getRedefineNewTypeName(baseTypeName, redefineNameCounter, fBuffer);
        grandKid->setAttribute(SchemaSymbols::fgATT_BASE, fBuffer.getRawBuffer());
        fRedefineComponents->put((void*) SchemaSymbols::fgELT_SIMPLETYPE,
                                 fullTypeNameId, 0);
    }
    else if (XMLString::equals(redefineChildComponentName,SchemaSymbols::fgELT_COMPLEXTYPE)) {

        if (fComplexTypeRegistry->containsKey(typeNameStr)) {
            return false;
        }

        DOMElement* grandKid = XUtil::getFirstChildElement(redefineChildElem);

        if (grandKid && XMLString::equals(grandKid->getLocalName(), SchemaSymbols::fgELT_ANNOTATION)) {
            grandKid = XUtil::getNextSiblingElement(grandKid);
        }

        if (grandKid == 0) {
            reportSchemaError(redefineChildElem, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidComplexType);
            return false;
        } else {

            // have to go one more level down; let another pass worry whether complexType is valid.
            DOMElement* greatGrandKid = XUtil::getFirstChildElement(grandKid);

            if (greatGrandKid != 0 &&
                XMLString::equals(greatGrandKid->getLocalName(), SchemaSymbols::fgELT_ANNOTATION)) {
                greatGrandKid = XUtil::getNextSiblingElement(greatGrandKid);
            }

            if (greatGrandKid == 0) {

                reportSchemaError(grandKid, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidComplexType);
                return false;
            } else {

                const XMLCh* greatGrandKidName = greatGrandKid->getLocalName();

                if (!XMLString::equals(greatGrandKidName, SchemaSymbols::fgELT_RESTRICTION)
                    && !XMLString::equals(greatGrandKidName, SchemaSymbols::fgELT_EXTENSION)) {

                    reportSchemaError(greatGrandKid, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidComplexType);
                    return false;
                }

                baseTypeName = getElementAttValue(greatGrandKid, SchemaSymbols::fgATT_BASE, DatatypeValidator::QName);
                const XMLCh* prefix = getPrefix(baseTypeName);
                const XMLCh* localPart = getLocalPart(baseTypeName);
                const XMLCh* uriStr = resolvePrefixToURI(greatGrandKid, prefix);

                if (fTargetNSURI != (int) fURIStringPool->addOrFind(uriStr)
                    || fStringPool->addOrFind(localPart) != typeNameId) {
                    reportSchemaError(greatGrandKid, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidComplexTypeBase);
                    return false;
                }

                // now we have to do the renaming...
                getRedefineNewTypeName(baseTypeName, redefineNameCounter, fBuffer);
                greatGrandKid->setAttribute(SchemaSymbols::fgATT_BASE, fBuffer.getRawBuffer());
                fRedefineComponents->put((void*) SchemaSymbols::fgELT_COMPLEXTYPE,
                                         fullTypeNameId, 0);
            }
        }
    }
    else if (XMLString::equals(redefineChildComponentName, SchemaSymbols::fgELT_GROUP)) {

        if (fGroupRegistry->containsKey(typeNameStr)) {
            return false;
        }

        int groupRefCount = changeRedefineGroup(redefineChildElem, redefineChildComponentName,
                                                redefineChildTypeName, redefineNameCounter);

        if (groupRefCount > 1) {

            reportSchemaError(redefineChildElem, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_GroupRefCount);
            return false;
        }
        else if (groupRefCount == 0) {
            // put a dummy value, default is null.
            // when processing groups, we will check that table, if a value
            // is found, we need to do a particle derivation check.
            fRedefineComponents->put((void*) SchemaSymbols::fgELT_GROUP,
                                     fullTypeNameId, fSchemaInfo->getCurrentSchemaURL());
        }
        else {
            fRedefineComponents->put((void*) SchemaSymbols::fgELT_GROUP, fullTypeNameId, 0);
        }
    }
    else if (XMLString::equals(redefineChildComponentName, SchemaSymbols::fgELT_ATTRIBUTEGROUP)) {

        if (fAttGroupRegistry->containsKey(redefineChildTypeName)) {
            return false;
        }

        int attGroupRefCount = changeRedefineGroup(redefineChildElem, redefineChildComponentName,
                                                   redefineChildTypeName, redefineNameCounter);

        if (attGroupRefCount > 1) {

            reportSchemaError(redefineChildElem, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_AttGroupRefCount);
            return false;
        }
        else if (attGroupRefCount == 0) {
            // put a dummy value, default is null.
            // when processing attributeGroups, we will check that table, if
            // a value is found, we need to check for attribute derivation ok
            // (by restriction)
            fRedefineComponents->put((void*) SchemaSymbols::fgELT_ATTRIBUTEGROUP,
                                     fullTypeNameId, fSchemaInfo->getCurrentSchemaURL());
        }
        else {
            fRedefineComponents->put((void*) SchemaSymbols::fgELT_ATTRIBUTEGROUP, fullTypeNameId, 0);
        }
    }
    else {
        reportSchemaError
        (
            redefineChildElem
            , XMLUni::fgXMLErrDomain
            , XMLErrs::Redefine_InvalidChild
            , redefineChildComponentName
        );
        return false;
    }

    return true;
}

int TraverseSchema::changeRedefineGroup(const DOMElement* const redefineChildElem,
                                        const XMLCh* const redefineChildComponentName,
                                        const XMLCh* const redefineChildTypeName,
                                        const int redefineNameCounter) {
    int result = 0;
    DOMElement* child = XUtil::getFirstChildElement(redefineChildElem);

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* name = child->getLocalName();

        if (XMLString::equals(name, SchemaSymbols::fgELT_ANNOTATION)) {
            continue;
        }

        if (!XMLString::equals(name, redefineChildComponentName)) {
            result += changeRedefineGroup(child, redefineChildComponentName, redefineChildTypeName, redefineNameCounter);
        } else {
            const XMLCh* refName = getElementAttValue(child, SchemaSymbols::fgATT_REF, DatatypeValidator::QName);

            if (refName && *refName) {

                const XMLCh* prefix = getPrefix(refName);
                const XMLCh* localPart = getLocalPart(refName);
                const XMLCh* uriStr = resolvePrefixToURI(child, prefix);

                if (fTargetNSURI == (int) fURIStringPool->addOrFind(uriStr)
                    && fStringPool->addOrFind(localPart) == fStringPool->addOrFind(redefineChildTypeName)) {

                    // now we have to do the renaming...
                    getRedefineNewTypeName(refName, redefineNameCounter, fBuffer);
                    child->setAttribute(SchemaSymbols::fgATT_REF, fBuffer.getRawBuffer());
                    result++;

                    if(XMLString::equals(redefineChildComponentName, SchemaSymbols::fgELT_GROUP)) {

                        const XMLCh* minOccurs = getElementAttValue(child, SchemaSymbols::fgATT_MINOCCURS, DatatypeValidator::Decimal);
                        const XMLCh* maxOccurs = getElementAttValue(child, SchemaSymbols::fgATT_MAXOCCURS, DatatypeValidator::Decimal);

                        if (((maxOccurs && *maxOccurs) && !XMLString::equals(maxOccurs, fgValueOne))
                            || ((minOccurs && *minOccurs) && !XMLString::equals(minOccurs, fgValueOne))) {
                            reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_InvalidGroupMinMax, redefineChildTypeName);
                        }
                    }
                }
            } // if ref was null some other stage of processing will flag the error
        }
    }

    return result;
}


void TraverseSchema::fixRedefinedSchema(const DOMElement* const elem,
                                        SchemaInfo* const redefinedSchemaInfo,
                                        const XMLCh* const redefineChildComponentName,
                                        const XMLCh* const redefineChildTypeName,
                                        const int redefineNameCounter) {

    bool foundIt = false;
    DOMElement* child = XUtil::getFirstChildElement(redefinedSchemaInfo->getRoot());

    restoreSchemaInfo(redefinedSchemaInfo);

    for (; child != 0; child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* name = child->getLocalName();

        if (XMLString::equals(name, redefineChildComponentName)) {

            const XMLCh* infoItemName = getElementAttValue(child, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);

            if(!XMLString::equals(infoItemName, redefineChildTypeName)) {
                continue;
            }
            else { // found it!

                // now we have to do the renaming...
                foundIt = true;
                getRedefineNewTypeName(infoItemName, redefineNameCounter, fBuffer);
                child->setAttribute(SchemaSymbols::fgATT_NAME, fBuffer.getRawBuffer());
                break;
            }
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_REDEFINE)) { // need to search the redefine decl...

            for (DOMElement* redefChild = XUtil::getFirstChildElement(child);
                 redefChild != 0;
                 redefChild = XUtil::getNextSiblingElement(redefChild)) {

                const XMLCh* redefName = redefChild->getLocalName();

                if (XMLString::equals(redefName, redefineChildComponentName)) {

                    const XMLCh* infoItemName = getElementAttValue(redefChild, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName);

                    if(!XMLString::equals(infoItemName, redefineChildTypeName)) {
                        continue;
                    }
                    else { // found it!

                        if (!openRedefinedSchema(child)) {

                            redefinedSchemaInfo->addFailedRedefine(child);
                            return;
                        }

                        foundIt = true;

                        SchemaInfo* reRedefinedSchemaInfo = fSchemaInfo;

                        if (validateRedefineNameChange(redefChild, redefineChildComponentName, redefineChildTypeName, redefineNameCounter + 1, redefinedSchemaInfo)) {

                            fixRedefinedSchema(redefChild, reRedefinedSchemaInfo, redefineChildComponentName, redefineChildTypeName, redefineNameCounter + 1);

                            // now we have to do the renaming...
                            getRedefineNewTypeName(infoItemName, redefineNameCounter, fBuffer);
                            const XMLCh* newInfoItemName = fStringPool->getValueForId(fStringPool->addOrFind(fBuffer.getRawBuffer()));
                            redefChild->setAttribute(SchemaSymbols::fgATT_NAME, newInfoItemName);

                            // and we now know we will traverse this, so set fRedefineComponents appropriately...
                            fBuffer.set(fTargetNSURIString);
                            fBuffer.append(chComma);
                            fBuffer.append(newInfoItemName);
                        }
                        else {

                            fixRedefinedSchema(redefChild, reRedefinedSchemaInfo, redefineChildComponentName, redefineChildTypeName, redefineNameCounter);
                            redefinedSchemaInfo->addFailedRedefine(redefChild);

                            // and we now know we will traverse this, so set fRedefineComponents appropriately...
                            fBuffer.set(fTargetNSURIString);
                            fBuffer.append(chComma);
                            fBuffer.append(infoItemName);
                        }

                        unsigned int infoItemNameId = fStringPool->addOrFind(fBuffer.getRawBuffer());

                        if (!fRedefineComponents->containsKey(redefineChildComponentName, infoItemNameId)) {
                            fRedefineComponents->put((void*) redefineChildComponentName, infoItemNameId, 0);
                        }

                        break;
                    }
                }
            } //for

            if (foundIt) {
                break;
            }
        }
    } //for

    if(!foundIt) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::Redefine_DeclarationNotFound, redefineChildTypeName);
    }
}

bool TraverseSchema::isSubstitutionGroupCircular(SchemaElementDecl* const elemDecl,
                                                 SchemaElementDecl* const subsElemDecl)
{

    if (elemDecl == subsElemDecl)
        return true;

    SchemaElementDecl* tmpElemDecl = subsElemDecl->getSubstitutionGroupElem();

    while (tmpElemDecl)
    {
        if (tmpElemDecl == elemDecl)
            return true;

        tmpElemDecl = tmpElemDecl->getSubstitutionGroupElem();
    }

    return false;
}

// ---------------------------------------------------------------------------
//  TraverseSchema: Error reporting methods
// ---------------------------------------------------------------------------
void TraverseSchema::reportSchemaError(const XSDLocator* const aLocator,
                                       const XMLCh* const msgDomain,
                                       const int errorCode) {

    fXSDErrorReporter.emitError(errorCode, msgDomain, aLocator);
}

void TraverseSchema::reportSchemaError(const XSDLocator* const aLocator,
                                       const XMLCh* const msgDomain,
                                       const int errorCode,
                                       const XMLCh* const text1,
                                       const XMLCh* const text2,
                                       const XMLCh* const text3,
                                       const XMLCh* const text4) {

    fXSDErrorReporter.emitError(errorCode, msgDomain, aLocator, text1, text2, text3, text4, fMemoryManager);
}

void TraverseSchema::reportSchemaError(const DOMElement* const elem,
                                       const XMLCh* const msgDomain,
                                       const int errorCode) {

    fLocator->setValues(fSchemaInfo->getCurrentSchemaURL(), 0,
                        ((XSDElementNSImpl*) elem)->getLineNo(),
                        ((XSDElementNSImpl*) elem)->getColumnNo());

    fXSDErrorReporter.emitError(errorCode, msgDomain, fLocator);
}

void TraverseSchema::reportSchemaError(const DOMElement* const elem,
                                       const XMLCh* const msgDomain,
                                       const int errorCode,
                                       const XMLCh* const text1,
                                       const XMLCh* const text2,
                                       const XMLCh* const text3,
                                       const XMLCh* const text4) {

    fLocator->setValues(fSchemaInfo->getCurrentSchemaURL(), 0,
                        ((XSDElementNSImpl*) elem)->getLineNo(),
                        ((XSDElementNSImpl*) elem)->getColumnNo());

    fXSDErrorReporter.emitError(errorCode, msgDomain, fLocator, text1, text2, text3, text4, fMemoryManager);
}

void TraverseSchema::reportSchemaError(const DOMElement* const elem,
                                       const XMLException&     except)
{
    fLocator->setValues(fSchemaInfo->getCurrentSchemaURL(), 0,
                        ((XSDElementNSImpl*) elem)->getLineNo(),
                        ((XSDElementNSImpl*) elem)->getColumnNo());

    fXSDErrorReporter.emitError(except, fLocator);
}
// ---------------------------------------------------------------------------
//  TraverseSchema: Init/CleanUp methods
// ---------------------------------------------------------------------------
void TraverseSchema::init() {

    fXSDErrorReporter.setErrorReporter(fErrorReporter);
    fXSDErrorReporter.setExitOnFirstFatal(fScanner->getExitOnFirstFatal());

    fFullConstraintChecking = fScanner->getValidationSchemaFullChecking();

    fDatatypeRegistry = fSchemaGrammar->getDatatypeRegistry();
    fStringPool = fGrammarResolver->getStringPool();
    fEmptyNamespaceURI = fScanner->getEmptyNamespaceId();
    fCurrentTypeNameStack = new (fMemoryManager) ValueVectorOf<unsigned int>(8, fMemoryManager);
    fCurrentGroupStack = new (fMemoryManager) ValueVectorOf<unsigned int>(8, fMemoryManager);

    fGlobalDeclarations = (ValueVectorOf<unsigned int>**) fMemoryManager->allocate
    (
        ENUM_ELT_SIZE * sizeof(ValueVectorOf<unsigned int>*)
    );//new ValueVectorOf<unsigned int>*[ENUM_ELT_SIZE];
    memset(fGlobalDeclarations, 0, ENUM_ELT_SIZE * sizeof(ValueVectorOf<unsigned int>*));
    for(unsigned int i=0; i < ENUM_ELT_SIZE; i++)
        fGlobalDeclarations[i] = new (fMemoryManager) ValueVectorOf<unsigned int>(8, fMemoryManager);

    fNonXSAttList = new (fMemoryManager) ValueVectorOf<DOMNode*>(4, fMemoryManager);
    fNotationRegistry = new (fMemoryManager) RefHash2KeysTableOf<XMLCh>(13, (bool) false, fMemoryManager);
    fPreprocessedNodes = new (fMemoryManager) RefHashTableOf<SchemaInfo, PtrHasher>
    (
        29
        , false
        , fMemoryManager
    );
    fLocator = new (fMemoryManager) XSDLocator();
    fDeclStack = new (fMemoryManager) ValueVectorOf<const DOMElement*>(16, fMemoryManager);
}

void TraverseSchema::cleanUp() {

    delete fCurrentTypeNameStack;
    delete fCurrentGroupStack;

    if (fGlobalDeclarations)
    {
        for(unsigned int i=0; i < ENUM_ELT_SIZE; i++)
            delete fGlobalDeclarations[i];
        fMemoryManager->deallocate(fGlobalDeclarations);//delete [] fGlobalDeclarations;
    }

    delete fNonXSAttList;
    delete fImportedNSList;
    delete fNotationRegistry;
    delete fRedefineComponents;
    delete fIdentityConstraintNames;
    delete fDeclStack;
    delete fIC_ElementsNS;
    delete fIC_NodeListNS;
    delete fPreprocessedNodes;
    delete fLocator;
    delete fParser;
}

void TraverseSchema::processElemDeclAttrs(const DOMElement* const elem,
                                          SchemaElementDecl* const elemDecl,
                                          const XMLCh*& valueConstraint,
                                          bool isTopLevel)
{
    int elementMiscFlags = 0;
    const XMLCh* fixedVal = getElementAttValue(elem, SchemaSymbols::fgATT_FIXED);
    const XMLCh* nillable = getElementAttValue(elem, SchemaSymbols::fgATT_NILLABLE, DatatypeValidator::Boolean);

    // check constraint value
    valueConstraint = getElementAttValue(elem, SchemaSymbols::fgATT_DEFAULT);
    if (fixedVal)
    {
        elementMiscFlags |= SchemaSymbols::XSD_FIXED;

        // if both default and fixed, emit an error
        if (valueConstraint)
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::ElementWithFixedAndDefault, getElementAttValue(elem, SchemaSymbols::fgATT_NAME, DatatypeValidator::NCName));

        // set constraint value to the fixed one
        valueConstraint = fixedVal;
    }

    // check nillable
    if (nillable && *nillable) {

        if (XMLString::equals(nillable, SchemaSymbols::fgATTVAL_TRUE)
            || XMLString::equals(nillable, fgValueOne)) {
            elementMiscFlags |= SchemaSymbols::XSD_NILLABLE;
        }
    }

    if (isTopLevel)
    {
        const XMLCh* bAbstract = getElementAttValue(elem, SchemaSymbols::fgATT_ABSTRACT, DatatypeValidator::Boolean);
        if (bAbstract && *bAbstract) {

            if (XMLString::equals(bAbstract, SchemaSymbols::fgATTVAL_TRUE)
                || XMLString::equals(bAbstract, fgValueOne)) {
                elementMiscFlags |= SchemaSymbols::XSD_ABSTRACT;
            }
        }

        elemDecl->setFinalSet(parseFinalSet(elem, EC_Final));
    }

    elemDecl->setBlockSet(parseBlockSet(elem, ES_Block));
    elemDecl->setMiscFlags(elementMiscFlags);
}

void TraverseSchema::processElemDeclIC(DOMElement* const icElem,
                                       SchemaElementDecl* const elemDecl)
{
    // key/keyref/unique processing
    ValueVectorOf<DOMElement*>* icNodes = 0;
    DOMElement* ic = icElem;
    while (ic != 0) {

        if (XMLString::equals(ic->getLocalName(), SchemaSymbols::fgELT_KEY)) {
            traverseKey(ic, elemDecl);
        }
        else if (XMLString::equals(ic->getLocalName(), SchemaSymbols::fgELT_UNIQUE)) {
            traverseUnique(ic, elemDecl);
        }
        else {

            if (!icNodes) {
                icNodes = new (fGrammarPoolMemoryManager) ValueVectorOf<DOMElement*>(8, fGrammarPoolMemoryManager);
            }

            icNodes->addElement(ic);
        }

        ic = XUtil::getNextSiblingElementNS(
            ic, fgIdentityConstraints, SchemaSymbols::fgURI_SCHEMAFORSCHEMA, 3);
    }

    if (icNodes) {

        if (!fIC_ElementsNS) {

            fIC_ElementsNS = new (fMemoryManager) RefHashTableOf<ElemVector>(13, fMemoryManager);
            fIC_NodeListNS = new (fMemoryManager) RefHashTableOf<ValueVectorOf<DOMElement*>, PtrHasher>(29, true, fMemoryManager);
        }

        fIC_Elements = fIC_ElementsNS->get(fTargetNSURIString);
        if (!fIC_Elements) {
            fIC_Elements = new (fMemoryManager) ValueVectorOf<SchemaElementDecl*>(8, fMemoryManager);
            fIC_ElementsNS->put((void*) fTargetNSURIString, fIC_Elements);
        }

        fIC_NodeListNS->put(elemDecl, icNodes);
        fIC_Elements->addElement(elemDecl);
    }
}

bool
TraverseSchema::checkElemDeclValueConstraint(const DOMElement* const elem,
                                             SchemaElementDecl* const elemDecl,
                                             const XMLCh* const valConstraint,
                                             ComplexTypeInfo* const typeInfo,
                                             DatatypeValidator* const validator)
{
    bool isValid = false;
    if (validator)
    {
        if (validator->getType() == DatatypeValidator::ID)
            reportSchemaError(
                elem, XMLUni::fgXMLErrDomain, XMLErrs::ElemIDValueConstraint
                , elemDecl->getBaseName(), valConstraint
            );

        try
        {
            const XMLCh* valueToCheck = valConstraint;
            short wsFacet = validator->getWSFacet();
            if((wsFacet == DatatypeValidator::REPLACE && !XMLString::isWSReplaced(valueToCheck)) ||
               (wsFacet == DatatypeValidator::COLLAPSE && !XMLString::isWSCollapsed(valueToCheck)))
            {
                XMLCh* normalizedValue=XMLString::replicate(valueToCheck, fMemoryManager);
                ArrayJanitor<XMLCh> tempURIName(normalizedValue, fMemoryManager);
                if(wsFacet == DatatypeValidator::REPLACE)
                    XMLString::replaceWS(normalizedValue, fMemoryManager);
                else if(wsFacet == DatatypeValidator::COLLAPSE)
                    XMLString::collapseWS(normalizedValue, fMemoryManager);
                valueToCheck=fStringPool->getValueForId(fStringPool->addOrFind(normalizedValue));
            }

            validator->validate(valueToCheck,0,fMemoryManager);

            XMLCh* canonical = (XMLCh*) validator->getCanonicalRepresentation(valueToCheck, fMemoryManager);
            ArrayJanitor<XMLCh> tempCanonical(canonical, fMemoryManager);

            if(!XMLString::equals(canonical, valueToCheck))
            {
                validator->validate(canonical, 0, fMemoryManager);
                valueToCheck=fStringPool->getValueForId(fStringPool->addOrFind(canonical));
            }

            elemDecl->setDefaultValue(valueToCheck);

            isValid = true;
        }
        catch(const XMLException& excep)
        {
            reportSchemaError(elem, excep);
        }
        catch(const OutOfMemoryException&)
        {
            throw;
        }
        catch(...)
        {
            reportSchemaError(elem, XMLUni::fgValidityDomain, XMLValid::DatatypeValidationFailure, valConstraint);
        }
    }

    if (typeInfo)
    {
        int contentSpecType = typeInfo->getContentType();

        if (contentSpecType != SchemaElementDecl::Simple &&
            contentSpecType != SchemaElementDecl::Mixed_Simple &&
            contentSpecType != SchemaElementDecl::Mixed_Complex)
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::NotSimpleOrMixedElement, elemDecl->getBaseName());

        if (((contentSpecType == SchemaElementDecl::Mixed_Complex
             || contentSpecType == SchemaElementDecl::Mixed_Simple)
            && !emptiableParticle(typeInfo->getContentSpec())))
            reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::EmptiableMixedContent, elemDecl->getBaseName());
    }

    return isValid;
}

void TraverseSchema::processSubstitutionGroup(const DOMElement* const elem,
                                              SchemaElementDecl* const elemDecl,
                                              ComplexTypeInfo*& typeInfo,
                                              DatatypeValidator*& validator,
                                              const XMLCh* const subsElemQName)
{
    NamespaceScopeManager nsMgr(elem, fSchemaInfo, this);

    SchemaElementDecl* subsElemDecl = getGlobalElemDecl(elem, subsElemQName);
    if (subsElemDecl)
    {
        if (isSubstitutionGroupCircular(elemDecl, subsElemDecl))
        {
            reportSchemaError(
                elem , XMLUni::fgXMLErrDomain , XMLErrs::CircularSubsGroup, elemDecl->getBaseName());
        }
        else
        {
            // Check for substitution validity constraint
            // Substitution allowed (block and blockDefault) && same type
            if (isSubstitutionGroupValid(elem, subsElemDecl, typeInfo, validator, elemDecl->getBaseName()))
            {
                elemDecl->setSubstitutionGroupElem(subsElemDecl);

                // if type information is missing, use subsGroup one
                if (!typeInfo && !validator)
                {
                    typeInfo = subsElemDecl->getComplexTypeInfo();
                    validator = subsElemDecl->getDatatypeValidator();

                    if (validator)
                    {
                        elemDecl->setDatatypeValidator(validator);
                        elemDecl->setModelType(SchemaElementDecl::Simple);
                    }
                    else if (typeInfo)
                    {
                        elemDecl->setComplexTypeInfo(typeInfo);
                        elemDecl->setModelType((SchemaElementDecl::ModelTypes)typeInfo->getContentType());
                    }
                }

                XMLCh* subsElemBaseName = subsElemDecl->getBaseName();
                int    subsElemURI = subsElemDecl->getURI();
                ValueVectorOf<SchemaElementDecl*>* subsElements =
                    fValidSubstitutionGroups->get(subsElemBaseName, subsElemURI);

                if (!subsElements && fTargetNSURI != subsElemURI)
                {
                    SchemaGrammar* aGrammar = (SchemaGrammar*) fGrammarResolver->getGrammar(fURIStringPool->getValueForId(subsElemURI));

                    if (aGrammar)
                    {
                        subsElements = aGrammar->getValidSubstitutionGroups()->get(subsElemBaseName, subsElemURI);

                        if (subsElements)
                        {
                            subsElements = new (fGrammarPoolMemoryManager) ValueVectorOf<SchemaElementDecl*>(*subsElements);
                            fValidSubstitutionGroups->put(subsElemBaseName, subsElemURI, subsElements);
                        }
                        else if (fSchemaInfo->circularImportExist(subsElemURI))
                        {
                            aGrammar->getValidSubstitutionGroups()->put(
                            subsElemBaseName, subsElemURI, new (fGrammarPoolMemoryManager) ValueVectorOf<SchemaElementDecl*>(8, fGrammarPoolMemoryManager));
                        }
                    }
                }

                if (!subsElements)
                {
                    subsElements = new (fGrammarPoolMemoryManager) ValueVectorOf<SchemaElementDecl*>(8, fGrammarPoolMemoryManager);
                    fValidSubstitutionGroups->put(subsElemBaseName, subsElemURI, subsElements);
                }

                subsElements->addElement(elemDecl);

                // update related subs. info in case of circular import
                BaseRefVectorEnumerator<SchemaInfo> importingEnum = fSchemaInfo->getImportingListEnumerator();

                while (importingEnum.hasMoreElements())
                {
                    const SchemaInfo& curRef = importingEnum.nextElement();
                    SchemaGrammar* aGrammar = (SchemaGrammar*) fGrammarResolver->getGrammar(curRef.getTargetNSURIString());
                    ValueVectorOf<SchemaElementDecl*>* subsElemList =
                        aGrammar->getValidSubstitutionGroups()->get(subsElemBaseName, subsElemURI);

                    if (subsElemList && !subsElemList->containsElement(elemDecl))
                        subsElemList->addElement(elemDecl);
                }

                buildValidSubstitutionListB(elem, elemDecl, subsElemDecl);
                buildValidSubstitutionListF(elem, elemDecl, subsElemDecl);
            }
        }
    }
}

void TraverseSchema::processAttValue(const XMLCh* const attVal,
                                     XMLBuffer& aBuf)
{
    // REVISIT-KN: assuming that attVal is not NULL
    //
    // normally, nothing will happen
    const XMLCh* srcVal = attVal;
    XMLCh nextCh = *srcVal;
    while (nextCh)
    {
        if (nextCh <= chCloseAngle) {
            switch (nextCh) {
            case chDoubleQuote:
                aBuf.append(chAmpersand);
                aBuf.append(XMLUni::fgQuot);
                aBuf.append(chSemiColon);
                break;
            case chSingleQuote:
               aBuf.append(chAmpersand);
               aBuf.append(XMLUni::fgApos);
               aBuf.append(chSemiColon);
               break;
            case chCloseAngle:
               aBuf.append(chAmpersand);
               aBuf.append(XMLUni::fgGT);
               aBuf.append(chSemiColon);
               break;
            case chOpenAngle:
               aBuf.append(chAmpersand);
               aBuf.append(XMLUni::fgLT);
               aBuf.append(chSemiColon);
               break;
            case chAmpersand:
               aBuf.append(chAmpersand);
               aBuf.append(XMLUni::fgAmp);
               aBuf.append(chSemiColon);
               break;
            default:
               aBuf.append(nextCh);
               break;
            } // end switch
        }
        else
            aBuf.append(nextCh);

        nextCh = *++srcVal;
    }
}

XSAnnotation* TraverseSchema::generateSyntheticAnnotation(const DOMElement* const elem
                                             , ValueVectorOf<DOMNode*>* nonXSAttList)
{
    const XMLCh* prefix = elem->getPrefix();
    ValueHashTableOf<unsigned int>* listOfURIs = new (fMemoryManager) ValueHashTableOf<unsigned int>(29, fMemoryManager);
    bool sawXMLNS = false;

    fBuffer.reset();
    fBuffer.append(chOpenAngle);
    if (prefix)
    {
        fBuffer.append(prefix);
        fBuffer.append(chColon);
    }
    fBuffer.append(SchemaSymbols::fgELT_ANNOTATION);

    // next is the nonXSAttList names & values
    XMLSize_t nonXSAttSize = nonXSAttList->size();

    for (XMLSize_t i=0; i<nonXSAttSize; i++)
    {
        DOMNode* attNode = nonXSAttList->elementAt(i);

        fBuffer.append(chSpace);
        fBuffer.append(attNode->getNodeName());
        fBuffer.append(chEqual);
        fBuffer.append(chDoubleQuote);
        processAttValue(attNode->getNodeValue(), fBuffer);
        fBuffer.append(chDoubleQuote);
    }

    // next is the namespaces on the elem
    DOMElement* currentElem = (DOMElement*) elem;
    DOMNamedNodeMap* eltAttrs;
    XMLSize_t     attrCount;
    do {
        eltAttrs = currentElem->getAttributes();
        attrCount = eltAttrs->getLength();
        for (XMLSize_t j = 0; j < attrCount; j++)
        {
            DOMNode*     attribute = eltAttrs->item(j);
            const XMLCh* attName = attribute->getNodeName();

            if (XMLString::startsWith(attName, XMLUni::fgXMLNSColonString))
            {
                if (!listOfURIs->containsKey((void*) attName)) {
                    listOfURIs->put((void*) attName, 0);
                    fBuffer.append(chSpace);
                    fBuffer.append(attName);
                    fBuffer.append(chEqual);
                    fBuffer.append(chDoubleQuote);
                    processAttValue(attribute->getNodeValue(), fBuffer);
                    fBuffer.append(chDoubleQuote);
                }
            }
            else if (!sawXMLNS && XMLString::equals(attName, XMLUni::fgXMLNSString))
            {
                fBuffer.append(chSpace);
                fBuffer.append(attName);
                fBuffer.append(chEqual);
                fBuffer.append(chDoubleQuote);
                processAttValue(attribute->getNodeValue(), fBuffer);
                fBuffer.append(chDoubleQuote);
                sawXMLNS = true;
            }
        }
        currentElem = (DOMElement*) currentElem->getParentNode();
    }
    while (currentElem != fSchemaInfo->getRoot()->getParentNode());
    delete listOfURIs;

    fBuffer.append(chCloseAngle);
    fBuffer.append(chLF);
    fBuffer.append(chOpenAngle);
    if (prefix)
    {
        fBuffer.append(prefix);
        fBuffer.append(chColon);
    }
    fBuffer.append(SchemaSymbols::fgELT_DOCUMENTATION);
    fBuffer.append(chCloseAngle);
    fBuffer.append(fgSynthetic_Annotation);
    fBuffer.append(chOpenAngle);
    fBuffer.append(chForwardSlash);
    if (prefix)
    {
        fBuffer.append(prefix);
        fBuffer.append(chColon);
    }
    fBuffer.append(SchemaSymbols::fgELT_DOCUMENTATION);
    fBuffer.append(chCloseAngle);
    fBuffer.append(chLF);
    fBuffer.append(chOpenAngle);
    fBuffer.append(chForwardSlash);
    if (prefix)
    {
        fBuffer.append(prefix);
        fBuffer.append(chColon);
    }
    fBuffer.append(SchemaSymbols::fgELT_ANNOTATION);
    fBuffer.append(chCloseAngle);

    XSAnnotation* annot = new (fGrammarPoolMemoryManager) XSAnnotation(fBuffer.getRawBuffer(), fGrammarPoolMemoryManager);
    annot->setLineCol( ((XSDElementNSImpl*)elem)->getLineNo()
                     , ((XSDElementNSImpl*)elem)->getColumnNo() );
    annot->setSystemId(fSchemaInfo->getCurrentSchemaURL());
    return annot;
}

class AnnotationErrorReporter : public XMLErrorReporter
{
public:
    AnnotationErrorReporter(XMLErrorReporter* chainedErrorReporter)
    {
        fErrorReporter = chainedErrorReporter;
        setSystemIdAndPosition(NULL, 0, 0);
    }

    void setSystemIdAndPosition(const XMLCh* systemId, XMLFileLoc line, XMLFileLoc column)
    {
        fSystemId=systemId;
        fLine=line;
        fColumn=column;
    }

    virtual void error
    (
        const   unsigned int        errCode
        , const XMLCh* const        errDomain
        , const ErrTypes            type
        , const XMLCh* const        errorText
        , const XMLCh* const        /*systemId*/
        , const XMLCh* const        publicId
        , const XMLFileLoc          lineNum
        , const XMLFileLoc          colNum
    )
    {
        if(fErrorReporter)
            fErrorReporter->error(errCode, errDomain, type, errorText, fSystemId, publicId, fLine+lineNum-1, lineNum==1?fColumn+colNum:colNum);
    }

    virtual void resetErrors() {}

protected:
    XMLErrorReporter*   fErrorReporter;
    const XMLCh*        fSystemId;
    XMLFileLoc          fLine, fColumn;
};

void TraverseSchema::validateAnnotations() {

    MemoryManager  *memMgr = fMemoryManager;
    RefHashTableOfEnumerator<XSAnnotation, PtrHasher> xsAnnotationEnum = RefHashTableOfEnumerator<XSAnnotation, PtrHasher> (fSchemaGrammar->getAnnotations(), false, memMgr);
    XSAnnotation& xsAnnot = xsAnnotationEnum.nextElement();
    XSAnnotation* nextAnnot;

    // create schema grammar
    SchemaGrammar  *grammar = new (memMgr) SchemaGrammar(memMgr);
    grammar->setComplexTypeRegistry(new (memMgr) RefHashTableOf<ComplexTypeInfo>(29, memMgr));
    grammar->setGroupInfoRegistry(new (memMgr) RefHashTableOf<XercesGroupInfo>(13, memMgr));
    grammar->setAttGroupInfoRegistry(new (memMgr) RefHashTableOf<XercesAttGroupInfo>(13, memMgr));
    grammar->setAttributeDeclRegistry(new (memMgr) RefHashTableOf<XMLAttDef>(29, memMgr));
    grammar->setValidSubstitutionGroups(new (memMgr) RefHash2KeysTableOf<ElemVector>(29, memMgr));
    grammar->setTargetNamespace(SchemaSymbols::fgURI_SCHEMAFORSCHEMA);
    XMLSchemaDescription* gramDesc = (XMLSchemaDescription*) grammar->getGrammarDescription();
    gramDesc->setTargetNamespace(SchemaSymbols::fgURI_SCHEMAFORSCHEMA);

    // setup components of annotation grammar
    SchemaElementDecl* annotElemDecl = new (memMgr) SchemaElementDecl
    (
        XMLUni::fgZeroLenString , SchemaSymbols::fgELT_ANNOTATION
        , fURIStringPool->addOrFind(SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
        , SchemaElementDecl::Mixed_Complex, Grammar::TOP_LEVEL_SCOPE , memMgr
    );
    annotElemDecl->setCreateReason(XMLElementDecl::Declared);
    grammar->putElemDecl(annotElemDecl);

    ComplexTypeInfo* complexType = new (memMgr) ComplexTypeInfo(memMgr);
    complexType->setAnonymous();
    complexType->setContentType(SchemaElementDecl::Mixed_Complex);
    annotElemDecl->setComplexTypeInfo(complexType);

    fBuffer.set(SchemaSymbols::fgURI_SCHEMAFORSCHEMA);
    fBuffer.append(chComma);
    fBuffer.append(chLatin_C);
    fBuffer.append(chDigit_0);
    const XMLCh* fullName = fStringPool->getValueForId(fStringPool->addOrFind(fBuffer.getRawBuffer()));
    grammar->getComplexTypeRegistry()->put((void*) fullName, complexType);
    complexType->setTypeName(fullName);
    complexType->setAttWildCard
    (
        new (memMgr) SchemaAttDef
        (
            XMLUni::fgZeroLenString, XMLUni::fgZeroLenString,
            fEmptyNamespaceURI, XMLAttDef::Any_Any,
            XMLAttDef::ProcessContents_Lax, memMgr
        )
    );

    SchemaElementDecl* appInfoElemDecl = new (memMgr) SchemaElementDecl
    (
        XMLUni::fgZeroLenString , SchemaSymbols::fgELT_APPINFO
        , fURIStringPool->addOrFind(SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
        , SchemaElementDecl::Any, Grammar::TOP_LEVEL_SCOPE , memMgr
    );

    appInfoElemDecl->setCreateReason(XMLElementDecl::Declared);
    appInfoElemDecl->setAttWildCard
    (
        new (memMgr) SchemaAttDef
        (
            XMLUni::fgZeroLenString, XMLUni::fgZeroLenString,
            fEmptyNamespaceURI, XMLAttDef::Any_Any,
            XMLAttDef::ProcessContents_Lax, memMgr
        )
    );
    grammar->putElemDecl(appInfoElemDecl);
    complexType->addElement(appInfoElemDecl);

    SchemaElementDecl* docElemDecl = new (memMgr) SchemaElementDecl
    (
        XMLUni::fgZeroLenString , SchemaSymbols::fgELT_DOCUMENTATION
        , fURIStringPool->addOrFind(SchemaSymbols::fgURI_SCHEMAFORSCHEMA)
        , SchemaElementDecl::Any, Grammar::TOP_LEVEL_SCOPE , memMgr
   );

    docElemDecl->setCreateReason(XMLElementDecl::Declared);
    docElemDecl->setAttWildCard
    (
        new (memMgr) SchemaAttDef
        (
            XMLUni::fgZeroLenString, XMLUni::fgZeroLenString,
            fEmptyNamespaceURI, XMLAttDef::Any_Any,
            XMLAttDef::ProcessContents_Lax, memMgr
        )
    );
    grammar->putElemDecl(docElemDecl);
    complexType->addElement(docElemDecl);

    ContentSpecNode* left  = new (memMgr) ContentSpecNode(appInfoElemDecl, memMgr);
    ContentSpecNode* right = new (memMgr) ContentSpecNode(docElemDecl, memMgr);
    ContentSpecNode* root  = new (memMgr) ContentSpecNode(ContentSpecNode::ModelGroupChoice
                                            , left
                                            , right
                                            , true
                                            , true
                                            , memMgr);
    root->setMinOccurs(0);
    root->setMaxOccurs(SchemaSymbols::XSD_UNBOUNDED);
    complexType->setContentSpec(root);

    // create input source to scan
    MemBufInputSource* memBufIS = new (memMgr) MemBufInputSource
    (
        (const XMLByte*)xsAnnot.getAnnotationString()
        , XMLString::stringLen(xsAnnot.getAnnotationString())*sizeof(XMLCh)
        , SchemaSymbols::fgELT_ANNOTATION
        , false
        , memMgr
        );
    Janitor<MemBufInputSource> janMemBuf(memBufIS);
    memBufIS->setEncoding(XMLUni::fgXMLChEncodingString);
    memBufIS->setCopyBufToStream(false);

    XSAXMLScanner *scanner = new (memMgr) XSAXMLScanner
    (
        fGrammarResolver, fURIStringPool, grammar, memMgr
    );
    Janitor<XSAXMLScanner> janScanner(scanner);

    AnnotationErrorReporter annErrReporter(fErrorReporter);
    scanner->setErrorReporter(&annErrReporter);

    XMLFileLoc line, col;
    xsAnnot.getLineCol(line, col);
    annErrReporter.setSystemIdAndPosition(xsAnnot.getSystemId(), line, col);
    scanner->scanDocument(*memBufIS);

    nextAnnot = xsAnnot.getNext();

    while (nextAnnot || xsAnnotationEnum.hasMoreElements())
    {
        if (nextAnnot) {
            memBufIS->resetMemBufInputSource((const XMLByte*)nextAnnot->getAnnotationString()
                                        , XMLString::stringLen(nextAnnot->getAnnotationString())*sizeof(XMLCh));
            nextAnnot->getLineCol(line, col);
            annErrReporter.setSystemIdAndPosition(nextAnnot->getSystemId(), line, col);
            nextAnnot = nextAnnot->getNext();
        }
        else {
            XSAnnotation& xsAnnot = xsAnnotationEnum.nextElement();
            memBufIS->resetMemBufInputSource((const XMLByte*)xsAnnot.getAnnotationString()
                                        , XMLString::stringLen(xsAnnot.getAnnotationString())*sizeof(XMLCh));
            xsAnnot.getLineCol(line, col);
            annErrReporter.setSystemIdAndPosition(xsAnnot.getSystemId(), line, col);
            nextAnnot = xsAnnot.getNext();
        }
        scanner->scanDocument(*memBufIS);
    }

}

const XMLCh* TraverseSchema::getElementAttValue(const DOMElement* const elem,
                                                const XMLCh* const attName,
                                                const DatatypeValidator::ValidatorType attType /* = UnKnown */) {

    DOMAttr* attNode = elem->getAttributeNode(attName);

    if (attNode == 0) {
        return 0;
    }

    const XMLCh* attValue = attNode->getValue();

    if (attType < DatatypeValidator::ID) {
        static bool bInitialized = false;
        static short wsFacets[DatatypeValidator::ID] = {0};
        if(!bInitialized)
        {
            bInitialized=true;
            DVHashTable* registry = DatatypeValidatorFactory::getBuiltInRegistry();
            wsFacets[DatatypeValidator::String]      = registry->get(SchemaSymbols::fgDT_STRING)->getWSFacet();
            wsFacets[DatatypeValidator::AnyURI]      = registry->get(SchemaSymbols::fgDT_ANYURI)->getWSFacet();
            wsFacets[DatatypeValidator::QName]       = registry->get(SchemaSymbols::fgDT_QNAME)->getWSFacet();
            wsFacets[DatatypeValidator::Name]        = registry->get(SchemaSymbols::fgDT_NAME)->getWSFacet();
            wsFacets[DatatypeValidator::NCName]      = registry->get(SchemaSymbols::fgDT_NCNAME)->getWSFacet();
            wsFacets[DatatypeValidator::Boolean]     = registry->get(SchemaSymbols::fgDT_BOOLEAN)->getWSFacet();
            wsFacets[DatatypeValidator::Float]       = registry->get(SchemaSymbols::fgDT_FLOAT)->getWSFacet();
            wsFacets[DatatypeValidator::Double]      = registry->get(SchemaSymbols::fgDT_DOUBLE)->getWSFacet();
            wsFacets[DatatypeValidator::Decimal]     = registry->get(SchemaSymbols::fgDT_DECIMAL)->getWSFacet();
            wsFacets[DatatypeValidator::HexBinary]   = registry->get(SchemaSymbols::fgDT_HEXBINARY)->getWSFacet();
            wsFacets[DatatypeValidator::Base64Binary]= registry->get(SchemaSymbols::fgDT_BASE64BINARY)->getWSFacet();
            wsFacets[DatatypeValidator::Duration]    = registry->get(SchemaSymbols::fgDT_DURATION)->getWSFacet();
            wsFacets[DatatypeValidator::DateTime]    = registry->get(SchemaSymbols::fgDT_DATETIME)->getWSFacet();
            wsFacets[DatatypeValidator::Date]        = registry->get(SchemaSymbols::fgDT_DATE)->getWSFacet();
            wsFacets[DatatypeValidator::Time]        = registry->get(SchemaSymbols::fgDT_TIME)->getWSFacet();
            wsFacets[DatatypeValidator::MonthDay]    = registry->get(SchemaSymbols::fgDT_MONTHDAY)->getWSFacet();
            wsFacets[DatatypeValidator::YearMonth]   = registry->get(SchemaSymbols::fgDT_YEARMONTH)->getWSFacet();
            wsFacets[DatatypeValidator::Year]        = registry->get(SchemaSymbols::fgDT_YEAR)->getWSFacet();
            wsFacets[DatatypeValidator::Month]       = registry->get(SchemaSymbols::fgDT_MONTH)->getWSFacet();
            wsFacets[DatatypeValidator::Day]         = registry->get(SchemaSymbols::fgDT_DAY)->getWSFacet();
        }
        short wsFacet = wsFacets[attType];
        if((wsFacet == DatatypeValidator::REPLACE && !XMLString::isWSReplaced(attValue)) ||
           (wsFacet == DatatypeValidator::COLLAPSE && !XMLString::isWSCollapsed(attValue)))
        {
            XMLCh* normalizedValue=XMLString::replicate(attValue, fMemoryManager);
            ArrayJanitor<XMLCh> tempName(normalizedValue, fMemoryManager);
            if(wsFacet == DatatypeValidator::REPLACE)
                XMLString::replaceWS(normalizedValue, fMemoryManager);
            else if(wsFacet == DatatypeValidator::COLLAPSE)
                XMLString::collapseWS(normalizedValue, fMemoryManager);
            if (!*normalizedValue)
                return XMLUni::fgZeroLenString;
            return fStringPool->getValueForId(fStringPool->addOrFind(normalizedValue));
        }
    }

    return attValue;
}

XERCES_CPP_NAMESPACE_END

/**
  * End of file TraverseSchema.cpp
  */
