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	/*
	* Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
	*/
	/*
	* 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.
	*/

	package com.sun.org.apache.xerces.internal.impl.xs.opti;

	import com.sun.org.apache.xerces.internal.impl.Constants;
	import com.sun.org.apache.xerces.internal.impl.XML11DTDScannerImpl;
	import com.sun.org.apache.xerces.internal.impl.XML11NSDocumentScannerImpl;
	import com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl;
	import com.sun.org.apache.xerces.internal.impl.XMLEntityHandler;
	import com.sun.org.apache.xerces.internal.impl.XMLEntityManager;
	import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
	import com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl;
	import com.sun.org.apache.xerces.internal.impl.XMLVersionDetector;
	import com.sun.org.apache.xerces.internal.impl.dv.DTDDVFactory;
	import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
	import com.sun.org.apache.xerces.internal.impl.validation.ValidationManager;
	import com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter;
	import com.sun.org.apache.xerces.internal.parsers.BasicParserConfiguration;
	import com.sun.org.apache.xerces.internal.util.FeatureState;
	import com.sun.org.apache.xerces.internal.util.PropertyState;
	import com.sun.org.apache.xerces.internal.util.SymbolTable;
	import com.sun.org.apache.xerces.internal.xni.XMLLocator;
	import com.sun.org.apache.xerces.internal.xni.XNIException;
	import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLComponent;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLDTDScanner;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentScanner;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;
	import com.sun.org.apache.xerces.internal.xni.parser.XMLPullParserConfiguration;
	import java.io.IOException;
	import java.util.Locale;
	import javax.xml.XMLConstants;
	import jdk.xml.internal.JdkXmlUtils;
	import jdk.xml.internal.SecuritySupport;

	/**
	* @xerces.internal
	*
	* @author Rahul Srivastava, Sun Microsystems Inc.
	*
	* @LastModified: Sep 2017
	*/
	public class SchemaParsingConfig extends BasicParserConfiguration
	implements XMLPullParserConfiguration {

	//
	// Constants
	//

	protected final static String XML11_DATATYPE_VALIDATOR_FACTORY =
	"com.sun.org.apache.xerces.internal.impl.dv.dtd.XML11DTDDVFactoryImpl";

	// feature identifiers

	/** Feature identifier: warn on duplicate attribute definition. */
	protected static final String WARN_ON_DUPLICATE_ATTDEF =
	Constants.XERCES_FEATURE_PREFIX + Constants.WARN_ON_DUPLICATE_ATTDEF_FEATURE;

	/** Feature identifier: warn on duplicate entity definition. */
	// protected static final String WARN_ON_DUPLICATE_ENTITYDEF = Constants.XERCES_FEATURE_PREFIX + Constants.WARN_ON_DUPLICATE_ENTITYDEF_FEATURE;

	/** Feature identifier: warn on undeclared element definition. */
	protected static final String WARN_ON_UNDECLARED_ELEMDEF =
	Constants.XERCES_FEATURE_PREFIX + Constants.WARN_ON_UNDECLARED_ELEMDEF_FEATURE;

	/** Feature identifier: allow Java encodings. */
	protected static final String ALLOW_JAVA_ENCODINGS =
	Constants.XERCES_FEATURE_PREFIX + Constants.ALLOW_JAVA_ENCODINGS_FEATURE;

	/** Feature identifier: continue after fatal error. */
	protected static final String CONTINUE_AFTER_FATAL_ERROR =
	Constants.XERCES_FEATURE_PREFIX + Constants.CONTINUE_AFTER_FATAL_ERROR_FEATURE;

	/** Feature identifier: load external DTD. */
	protected static final String LOAD_EXTERNAL_DTD =
	Constants.XERCES_FEATURE_PREFIX + Constants.LOAD_EXTERNAL_DTD_FEATURE;

	/** Feature identifier: notify built-in refereces. */
	protected static final String NOTIFY_BUILTIN_REFS =
	Constants.XERCES_FEATURE_PREFIX + Constants.NOTIFY_BUILTIN_REFS_FEATURE;

	/** Feature identifier: notify character refereces. */
	protected static final String NOTIFY_CHAR_REFS =
	Constants.XERCES_FEATURE_PREFIX + Constants.NOTIFY_CHAR_REFS_FEATURE;

	/** Feature identifier: expose schema normalized value */
	protected static final String NORMALIZE_DATA =
	Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_NORMALIZED_VALUE;

	/** Feature identifier: send element default value via characters() */
	protected static final String SCHEMA_ELEMENT_DEFAULT =
	Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_ELEMENT_DEFAULT;

	/** Feature identifier: generate synthetic annotations. */
	protected static final String GENERATE_SYNTHETIC_ANNOTATIONS =
	Constants.XERCES_FEATURE_PREFIX + Constants.GENERATE_SYNTHETIC_ANNOTATIONS_FEATURE;


	// property identifiers

	/** Property identifier: error reporter. */
	protected static final String ERROR_REPORTER =
	Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;

	/** Property identifier: entity manager. */
	protected static final String ENTITY_MANAGER =
	Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_MANAGER_PROPERTY;

	/** Property identifier document scanner: */
	protected static final String DOCUMENT_SCANNER =
	Constants.XERCES_PROPERTY_PREFIX + Constants.DOCUMENT_SCANNER_PROPERTY;

	/** Property identifier: DTD scanner. */
	protected static final String DTD_SCANNER =
	Constants.XERCES_PROPERTY_PREFIX + Constants.DTD_SCANNER_PROPERTY;

	/** Property identifier: grammar pool. */
	protected static final String XMLGRAMMAR_POOL =
	Constants.XERCES_PROPERTY_PREFIX + Constants.XMLGRAMMAR_POOL_PROPERTY;

	/** Property identifier: DTD validator. */
	protected static final String DTD_VALIDATOR =
	Constants.XERCES_PROPERTY_PREFIX + Constants.DTD_VALIDATOR_PROPERTY;

	/** Property identifier: namespace binder. */
	protected static final String NAMESPACE_BINDER =
	Constants.XERCES_PROPERTY_PREFIX + Constants.NAMESPACE_BINDER_PROPERTY;

	/** Property identifier: datatype validator factory. */
	protected static final String DATATYPE_VALIDATOR_FACTORY =
	Constants.XERCES_PROPERTY_PREFIX + Constants.DATATYPE_VALIDATOR_FACTORY_PROPERTY;

	protected static final String VALIDATION_MANAGER =
	Constants.XERCES_PROPERTY_PREFIX + Constants.VALIDATION_MANAGER_PROPERTY;

	/** Property identifier: XML Schema validator. */
	protected static final String SCHEMA_VALIDATOR =
	Constants.XERCES_PROPERTY_PREFIX + Constants.SCHEMA_VALIDATOR_PROPERTY;

	/** Property identifier: locale. */
	protected static final String LOCALE =
	Constants.XERCES_PROPERTY_PREFIX + Constants.LOCALE_PROPERTY;


	// debugging

	/** Set to true and recompile to print exception stack trace. */
	private static final boolean PRINT_EXCEPTION_STACK_TRACE = false;

	//
	// Data
	//

	//
	// XML 1.0 components
	//

	/** The XML 1.0 Datatype validator factory. */
	protected final DTDDVFactory fDatatypeValidatorFactory;

	/** The XML 1.0 Document scanner. */
	protected final XMLNSDocumentScannerImpl fNamespaceScanner;

	/** The XML 1.0 DTD scanner. */
	protected final XMLDTDScannerImpl fDTDScanner;

	//
	// XML 1.1 components
	//

	/** The XML 1.1 Datatype validator factory. */
	protected DTDDVFactory fXML11DatatypeFactory = null;

	/** The XML 1.1 Document scanner. */
	protected XML11NSDocumentScannerImpl fXML11NSDocScanner = null;

	/ The XML 1.1 DTD scanner. /
	protected XML11DTDScannerImpl fXML11DTDScanner = null;

	// common components (non-configurable)

	/** Current Datatype validator factory. */
	protected DTDDVFactory fCurrentDVFactory;

	/** Current scanner */
	protected XMLDocumentScanner fCurrentScanner;

	/** Current DTD scanner. */
	protected XMLDTDScanner fCurrentDTDScanner;

	/** Grammar pool. */
	protected XMLGrammarPool fGrammarPool;

	/** XML version detector. */
	protected final XMLVersionDetector fVersionDetector;

	// common components (configurable)

	/** Error reporter. */
	protected final XMLErrorReporter fErrorReporter;

	/** Entity manager. */
	protected final XMLEntityManager fEntityManager;

	/** Input Source */
	protected XMLInputSource fInputSource;

	protected final ValidationManager fValidationManager;
	// state

	/** Locator */
	protected XMLLocator fLocator;

	/**
	* True if a parse is in progress. This state is needed because
	* some features/properties cannot be set while parsing (e.g.
	* validation and namespaces).
	*/
	protected boolean fParseInProgress = false;

	/**
	* fConfigUpdated is set to true if there has been any change to the configuration settings,
	* i.e a feature or a property was changed.
	*/
	protected boolean fConfigUpdated = false;

	/** Flag indiciating whether XML11 components have been initialized. */
	private boolean f11Initialized = false;

	//
	// Constructors
	//

	/** Default constructor. */
	public SchemaParsingConfig() {
	this(null, null, null);
	} // <init>()

	/**
	* Constructs a parser configuration using the specified symbol table.
	*
	* @param symbolTable The symbol table to use.
	*/
	public SchemaParsingConfig(SymbolTable symbolTable) {
	this(symbolTable, null, null);
	} // <init>(SymbolTable)

	/**
	* Constructs a parser configuration using the specified symbol table and
	* grammar pool.
	* <p>
	* <strong>REVISIT:</strong>
	* Grammar pool will be updated when the new validation engine is
	* implemented.
	*
	* @param symbolTable The symbol table to use.
	* @param grammarPool The grammar pool to use.
	*/
	public SchemaParsingConfig(SymbolTable symbolTable,
	XMLGrammarPool grammarPool) {
	this(symbolTable, grammarPool, null);
	} // <init>(SymbolTable,XMLGrammarPool)

	/**
	* Constructs a parser configuration using the specified symbol table,
	* grammar pool, and parent settings.
	* <p>
	* <strong>REVISIT:</strong>
	* Grammar pool will be updated when the new validation engine is
	* implemented.
	*
	* @param symbolTable The symbol table to use.
	* @param grammarPool The grammar pool to use.
	* @param parentSettings The parent settings.
	*/
	public SchemaParsingConfig(SymbolTable symbolTable,
	XMLGrammarPool grammarPool,
	XMLComponentManager parentSettings) {
	super(symbolTable, parentSettings);

	// add default recognized features
	final String[] recognizedFeatures = {
	PARSER_SETTINGS, WARN_ON_DUPLICATE_ATTDEF, WARN_ON_UNDECLARED_ELEMDEF,
	ALLOW_JAVA_ENCODINGS, CONTINUE_AFTER_FATAL_ERROR,
	LOAD_EXTERNAL_DTD, NOTIFY_BUILTIN_REFS,
	NOTIFY_CHAR_REFS, GENERATE_SYNTHETIC_ANNOTATIONS,
	XMLConstants.USE_CATALOG,
	JdkXmlUtils.OVERRIDE_PARSER
	};
	addRecognizedFeatures(recognizedFeatures);
	fFeatures.put(PARSER_SETTINGS, Boolean.TRUE);
	// set state for default features
	fFeatures.put(WARN_ON_DUPLICATE_ATTDEF, Boolean.FALSE);
	//setFeature(WARN_ON_DUPLICATE_ENTITYDEF, false);
	fFeatures.put(WARN_ON_UNDECLARED_ELEMDEF, Boolean.FALSE);
	fFeatures.put(ALLOW_JAVA_ENCODINGS, Boolean.FALSE);
	fFeatures.put(CONTINUE_AFTER_FATAL_ERROR, Boolean.FALSE);
	fFeatures.put(LOAD_EXTERNAL_DTD, Boolean.TRUE);
	fFeatures.put(NOTIFY_BUILTIN_REFS, Boolean.FALSE);
	fFeatures.put(NOTIFY_CHAR_REFS, Boolean.FALSE);
	fFeatures.put(GENERATE_SYNTHETIC_ANNOTATIONS, Boolean.FALSE);
	fFeatures.put(XMLConstants.USE_CATALOG, JdkXmlUtils.USE_CATALOG_DEFAULT);
	fFeatures.put(JdkXmlUtils.OVERRIDE_PARSER, JdkXmlUtils.OVERRIDE_PARSER_DEFAULT);

	// add default recognized properties
	final String[] recognizedProperties = {
	ERROR_REPORTER,
	ENTITY_MANAGER,
	DOCUMENT_SCANNER,
	DTD_SCANNER,
	DTD_VALIDATOR,
	NAMESPACE_BINDER,
	XMLGRAMMAR_POOL,
	DATATYPE_VALIDATOR_FACTORY,
	VALIDATION_MANAGER,
	GENERATE_SYNTHETIC_ANNOTATIONS,
	LOCALE,
	JdkXmlUtils.CATALOG_DEFER,
	JdkXmlUtils.CATALOG_FILES,
	JdkXmlUtils.CATALOG_PREFER,
	JdkXmlUtils.CATALOG_RESOLVE,
	JdkXmlUtils.CDATA_CHUNK_SIZE
	};
	addRecognizedProperties(recognizedProperties);

	fGrammarPool = grammarPool;
	if (fGrammarPool != null) {
	setProperty(XMLGRAMMAR_POOL, fGrammarPool);
	}

	fEntityManager = new XMLEntityManager();
	fProperties.put(ENTITY_MANAGER, fEntityManager);
	addComponent(fEntityManager);

	fErrorReporter = new XMLErrorReporter();
	fErrorReporter.setDocumentLocator(fEntityManager.getEntityScanner());
	fProperties.put(ERROR_REPORTER, fErrorReporter);
	addComponent(fErrorReporter);

	fNamespaceScanner = new XMLNSDocumentScannerImpl();
	fProperties.put(DOCUMENT_SCANNER, fNamespaceScanner);
	addRecognizedParamsAndSetDefaults(fNamespaceScanner);

	fDTDScanner = new XMLDTDScannerImpl();
	fProperties.put(DTD_SCANNER, fDTDScanner);
	addRecognizedParamsAndSetDefaults(fDTDScanner);

	fDatatypeValidatorFactory = DTDDVFactory.getInstance();
	fProperties.put(DATATYPE_VALIDATOR_FACTORY,
	fDatatypeValidatorFactory);

	fValidationManager = new ValidationManager();
	fProperties.put(VALIDATION_MANAGER, fValidationManager);
	fProperties.put(JdkXmlUtils.CDATA_CHUNK_SIZE, JdkXmlUtils.CDATA_CHUNK_SIZE_DEFAULT);

	fVersionDetector = new XMLVersionDetector();

	// add message formatters
	if (fErrorReporter.getMessageFormatter(XMLMessageFormatter.XML_DOMAIN) == null) {
	XMLMessageFormatter xmft = new XMLMessageFormatter();
	fErrorReporter.putMessageFormatter(XMLMessageFormatter.XML_DOMAIN, xmft);
	fErrorReporter.putMessageFormatter(XMLMessageFormatter.XMLNS_DOMAIN, xmft);
	}

	if (fErrorReporter.getMessageFormatter(XSMessageFormatter.SCHEMA_DOMAIN) == null) {
	XSMessageFormatter xmft = new XSMessageFormatter();
	fErrorReporter.putMessageFormatter(XSMessageFormatter.SCHEMA_DOMAIN, xmft);
	}

	// set locale
	try {
	setLocale(Locale.getDefault());
	}
	catch (XNIException e) {
	// do nothing
	// REVISIT: What is the right thing to do? -Ac
	}

	} // <init>(SymbolTable,XMLGrammarPool)

	//
	// Public methods
	//

	/**
	* Returns the state of a feature.
	*
	* @param featureId The feature identifier.
	* @return true if the feature is supported
	*
	* @throws XMLConfigurationException Thrown for configuration error.
	* In general, components should
	* only throw this exception if
	* it is <strong>really</strong>
	* a critical error.
	*/
	public FeatureState getFeatureState(String featureId)
	throws XMLConfigurationException {
	// make this feature special
	if (featureId.equals(PARSER_SETTINGS)) {
	return FeatureState.is(fConfigUpdated);
	}
	return super.getFeatureState(featureId);

	} // getFeature(String):boolean

	/**
	* Set the state of a feature.
	*
	* Set the state of any feature in a SAX2 parser. The parser
	* might not recognize the feature, and if it does recognize
	* it, it might not be able to fulfill the request.
	*
	* @param featureId The unique identifier (URI) of the feature.
	* @param state The requested state of the feature (true or false).
	*
	* @exception com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException If the
	* requested feature is not known.
	*/
	public void setFeature(String featureId, boolean state)
	throws XMLConfigurationException {

	fConfigUpdated = true;

	// forward to every XML 1.0 component
	fNamespaceScanner.setFeature(featureId, state);
	fDTDScanner.setFeature(featureId, state);

	// forward to every XML 1.1 component
	if (f11Initialized) {
	try {
	fXML11DTDScanner.setFeature(featureId, state);
	}
	// ignore the exception.
	catch (Exception e) {}
	try {
	fXML11NSDocScanner.setFeature(featureId, state);
	}
	// ignore the exception
	catch (Exception e) {}
	}

	// save state if noone "objects"
	super.setFeature(featureId, state);

	} // setFeature(String,boolean)

	/**
	* Returns the value of a property.
	*
	* @param propertyId The property identifier.
	* @return the value of the property
	*
	* @throws XMLConfigurationException Thrown for configuration error.
	* In general, components should
	* only throw this exception if
	* it is <strong>really</strong>
	* a critical error.
	*/
	public PropertyState getPropertyState(String propertyId)
	throws XMLConfigurationException {
	if (LOCALE.equals(propertyId)) {
	return PropertyState.is(getLocale());
	}
	return super.getPropertyState(propertyId);
	}

	/**
	* setProperty
	*
	* @param propertyId
	* @param value
	*/
	public void setProperty(String propertyId, Object value)
	throws XMLConfigurationException {

	fConfigUpdated = true;
	if (LOCALE.equals(propertyId)) {
	setLocale((Locale) value);
	}

	// forward to every XML 1.0 component
	fNamespaceScanner.setProperty(propertyId, value);
	fDTDScanner.setProperty(propertyId, value);

	// forward to every XML 1.1 component
	if (f11Initialized) {
	try {
	fXML11DTDScanner.setProperty(propertyId, value);
	}
	// ignore the exception.
	catch (Exception e) {}
	try {
	fXML11NSDocScanner.setProperty(propertyId, value);
	}
	// ignore the exception
	catch (Exception e) {}
	}

	// store value if noone "objects"
	super.setProperty(propertyId, value);

	} // setProperty(String,Object)

	/**
	* Set the locale to use for messages.
	*
	* @param locale The locale object to use for localization of messages.
	*
	* @exception XNIException Thrown if the parser does not support the
	* specified locale.
	*/
	public void setLocale(Locale locale) throws XNIException {
	super.setLocale(locale);
	fErrorReporter.setLocale(locale);
	} // setLocale(Locale)

	//
	// XMLPullParserConfiguration methods
	//

	// parsing

	/**
	* Sets the input source for the document to parse.
	*
	* @param inputSource The document's input source.
	*
	* @exception XMLConfigurationException Thrown if there is a
	* configuration error when initializing the
	* parser.
	* @exception IOException Thrown on I/O error.
	*
	* @see #parse(boolean)
	*/
	public void setInputSource(XMLInputSource inputSource)
	throws XMLConfigurationException, IOException {

	// REVISIT: this method used to reset all the components and
	// construct the pipeline. Now reset() is called
	// in parse (boolean) just before we parse the document
	// Should this method still throw exceptions..?

	fInputSource = inputSource;

	} // setInputSource(XMLInputSource)

	/**
	* Parses the document in a pull parsing fashion.
	*
	* @param complete True if the pull parser should parse the
	* remaining document completely.
	*
	* @return True if there is more document to parse.
	*
	* @exception XNIException Any XNI exception, possibly wrapping
	* another exception.
	* @exception IOException An IO exception from the parser, possibly
	* from a byte stream or character stream
	* supplied by the parser.
	*
	* @see #setInputSource
	*/
	public boolean parse(boolean complete) throws XNIException, IOException {
	//
	// reset and configure pipeline and set InputSource.
	if (fInputSource != null) {
	try {
	fValidationManager.reset();
	fVersionDetector.reset(this);
	reset();

	short version = fVersionDetector.determineDocVersion(fInputSource);
	// XML 1.0
	if (version == Constants.XML_VERSION_1_0) {
	configurePipeline();
	resetXML10();
	}
	// XML 1.1
	else if (version == Constants.XML_VERSION_1_1) {
	initXML11Components();
	configureXML11Pipeline();
	resetXML11();
	}
	// Unrecoverable error reported during version detection
	else {
	return false;
	}

	// mark configuration as fixed
	fConfigUpdated = false;

	// resets and sets the pipeline.
	fVersionDetector.startDocumentParsing((XMLEntityHandler) fCurrentScanner, version);
	fInputSource = null;
	}
	catch (XNIException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (IOException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (RuntimeException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (Exception ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw new XNIException(ex);
	}
	}

	try {
	return fCurrentScanner.scanDocument(complete);
	}
	catch (XNIException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (IOException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (RuntimeException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (Exception ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw new XNIException(ex);
	}

	} // parse(boolean):boolean

	/**
	* If the application decides to terminate parsing before the xml document
	* is fully parsed, the application should call this method to free any
	* resource allocated during parsing. For example, close all opened streams.
	*/
	public void cleanup() {
	fEntityManager.closeReaders();
	}

	//
	// XMLParserConfiguration methods
	//

	/**
	* Parses the specified input source.
	*
	* @param source The input source.
	*
	* @exception XNIException Throws exception on XNI error.
	* @exception java.io.IOException Throws exception on i/o error.
	*/
	public void parse(XMLInputSource source) throws XNIException, IOException {

	if (fParseInProgress) {
	// REVISIT - need to add new error message
	throw new XNIException("FWK005 parse may not be called while parsing.");
	}
	fParseInProgress = true;

	try {
	setInputSource(source);
	parse(true);
	}
	catch (XNIException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (IOException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (RuntimeException ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw ex;
	}
	catch (Exception ex) {
	if (PRINT_EXCEPTION_STACK_TRACE)
	ex.printStackTrace();
	throw new XNIException(ex);
	}
	finally {
	fParseInProgress = false;
	// close all streams opened by xerces
	this.cleanup();
	}

	} // parse(InputSource)

	//
	// Protected methods
	//

	/**
	* Reset all components before parsing.
	*
	* @throws XNIException Thrown if an error occurs during initialization.
	*/
	public void reset() throws XNIException {

	// initialize the common components
	super.reset();

	} // reset()

	/** Configures the XML 1.0 pipeline. */
	protected void configurePipeline() {

	if (fCurrentDVFactory != fDatatypeValidatorFactory) {
	fCurrentDVFactory = fDatatypeValidatorFactory;
	// use XML 1.0 datatype library
	setProperty(DATATYPE_VALIDATOR_FACTORY, fCurrentDVFactory);
	}

	// setup document pipeline
	if (fCurrentScanner != fNamespaceScanner) {
	fCurrentScanner = fNamespaceScanner;
	setProperty(DOCUMENT_SCANNER, fCurrentScanner);
	}
	fNamespaceScanner.setDocumentHandler(fDocumentHandler);
	if (fDocumentHandler != null) {
	fDocumentHandler.setDocumentSource(fNamespaceScanner);
	}
	fLastComponent = fNamespaceScanner;

	// setup dtd pipeline
	if (fCurrentDTDScanner != fDTDScanner) {
	fCurrentDTDScanner = fDTDScanner;
	setProperty(DTD_SCANNER, fCurrentDTDScanner);
	}
	fDTDScanner.setDTDHandler(fDTDHandler);
	if (fDTDHandler != null) {
	fDTDHandler.setDTDSource(fDTDScanner);
	}
	fDTDScanner.setDTDContentModelHandler(fDTDContentModelHandler);
	if (fDTDContentModelHandler != null) {
	fDTDContentModelHandler.setDTDContentModelSource(fDTDScanner);
	}

	} // configurePipeline()

	/** Configures the XML 1.1 pipeline. */
	protected void configureXML11Pipeline() {

	if (fCurrentDVFactory != fXML11DatatypeFactory) {
	fCurrentDVFactory = fXML11DatatypeFactory;
	// use XML 1.1 datatype library
	setProperty(DATATYPE_VALIDATOR_FACTORY, fCurrentDVFactory);
	}

	// setup document pipeline
	if (fCurrentScanner != fXML11NSDocScanner) {
	fCurrentScanner = fXML11NSDocScanner;
	setProperty(DOCUMENT_SCANNER, fCurrentScanner);
	}
	fXML11NSDocScanner.setDocumentHandler(fDocumentHandler);
	if (fDocumentHandler != null) {
	fDocumentHandler.setDocumentSource(fXML11NSDocScanner);
	}
	fLastComponent = fXML11NSDocScanner;

	// setup dtd pipeline
	if (fCurrentDTDScanner != fXML11DTDScanner) {
	fCurrentDTDScanner = fXML11DTDScanner;
	setProperty(DTD_SCANNER, fCurrentDTDScanner);
	}
	fXML11DTDScanner.setDTDHandler(fDTDHandler);
	if (fDTDHandler != null) {
	fDTDHandler.setDTDSource(fXML11DTDScanner);
	}
	fXML11DTDScanner.setDTDContentModelHandler(fDTDContentModelHandler);
	if (fDTDContentModelHandler != null) {
	fDTDContentModelHandler.setDTDContentModelSource(fXML11DTDScanner);
	}

	} // configureXML11Pipeline()

	// features and properties

	/**
	* Check a feature. If feature is know and supported, this method simply
	* returns. Otherwise, the appropriate exception is thrown.
	*
	* @param featureId The unique identifier (URI) of the feature.
	*
	* @throws XMLConfigurationException Thrown for configuration error.
	* In general, components should
	* only throw this exception if
	* it is <strong>really</strong>
	* a critical error.
	*/
	protected FeatureState checkFeature(String featureId)
	throws XMLConfigurationException {

	//
	// Xerces Features
	//

	if (featureId.startsWith(Constants.XERCES_FEATURE_PREFIX)) {
	final int suffixLength = featureId.length() - Constants.XERCES_FEATURE_PREFIX.length();

	//
	// http://apache.org/xml/features/validation/dynamic
	// Allows the parser to validate a document only when it
	// contains a grammar. Validation is turned on/off based
	// on each document instance, automatically.
	//
	if (suffixLength == Constants.DYNAMIC_VALIDATION_FEATURE.length() &&
	featureId.endsWith(Constants.DYNAMIC_VALIDATION_FEATURE)) {
	return FeatureState.RECOGNIZED;
	}
	//
	// http://apache.org/xml/features/validation/default-attribute-values
	//
	if (suffixLength == Constants.DEFAULT_ATTRIBUTE_VALUES_FEATURE.length() &&
	featureId.endsWith(Constants.DEFAULT_ATTRIBUTE_VALUES_FEATURE)) {
	// REVISIT
	return FeatureState.NOT_SUPPORTED;
	}
	//
	// http://apache.org/xml/features/validation/default-attribute-values
	//
	if (suffixLength == Constants.VALIDATE_CONTENT_MODELS_FEATURE.length() &&
	featureId.endsWith(Constants.VALIDATE_CONTENT_MODELS_FEATURE)) {
	// REVISIT
	return FeatureState.NOT_SUPPORTED;
	}
	//
	// http://apache.org/xml/features/validation/nonvalidating/load-dtd-grammar
	//
	if (suffixLength == Constants.LOAD_DTD_GRAMMAR_FEATURE.length() &&
	featureId.endsWith(Constants.LOAD_DTD_GRAMMAR_FEATURE)) {
	return FeatureState.RECOGNIZED;
	}
	//
	// http://apache.org/xml/features/validation/nonvalidating/load-external-dtd
	//
	if (suffixLength == Constants.LOAD_EXTERNAL_DTD_FEATURE.length() &&
	featureId.endsWith(Constants.LOAD_EXTERNAL_DTD_FEATURE)) {
	return FeatureState.RECOGNIZED;
	}

	//
	// http://apache.org/xml/features/validation/default-attribute-values
	//
	if (suffixLength == Constants.VALIDATE_DATATYPES_FEATURE.length() &&
	featureId.endsWith(Constants.VALIDATE_DATATYPES_FEATURE)) {
	return FeatureState.NOT_SUPPORTED;
	}
	}

	//
	// Not recognized
	//

	return super.checkFeature(featureId);

	} // checkFeature(String)

	/**
	* Check a property. If the property is know and supported, this method
	* simply returns. Otherwise, the appropriate exception is thrown.
	*
	* @param propertyId The unique identifier (URI) of the property
	* being set.
	*
	* @throws XMLConfigurationException Thrown for configuration error.
	* In general, components should
	* only throw this exception if
	* it is <strong>really</strong>
	* a critical error.
	*/
	protected PropertyState checkProperty(String propertyId)
	throws XMLConfigurationException {

	//
	// Xerces Properties
	//

	if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
	final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length();

	if (suffixLength == Constants.DTD_SCANNER_PROPERTY.length() &&
	propertyId.endsWith(Constants.DTD_SCANNER_PROPERTY)) {
	return PropertyState.RECOGNIZED;
	}
	}

	if (propertyId.startsWith(Constants.JAXP_PROPERTY_PREFIX)) {
	final int suffixLength = propertyId.length() - Constants.JAXP_PROPERTY_PREFIX.length();

	if (suffixLength == Constants.SCHEMA_SOURCE.length() &&
	propertyId.endsWith(Constants.SCHEMA_SOURCE)) {
	return PropertyState.RECOGNIZED;
	}
	}

	//
	// Not recognized
	//

	return super.checkProperty(propertyId);

	} // checkProperty(String)

	/**
	* Adds all of the component's recognized features and properties
	* to the list of default recognized features and properties, and
	* sets default values on the configuration for features and
	* properties which were previously absent from the configuration.
	*
	* @param component The component whose recognized features
	* and properties will be added to the configuration
	*/
	private void addRecognizedParamsAndSetDefaults(XMLComponent component) {

	// register component's recognized features
	String[] recognizedFeatures = component.getRecognizedFeatures();
	addRecognizedFeatures(recognizedFeatures);

	// register component's recognized properties
	String[] recognizedProperties = component.getRecognizedProperties();
	addRecognizedProperties(recognizedProperties);

	// set default values
	if (recognizedFeatures != null) {
	for (int i = 0; i < recognizedFeatures.length; ++i) {
	String featureId = recognizedFeatures[i];
	Boolean state = component.getFeatureDefault(featureId);
	if (state != null) {
	// Do not overwrite values already set on the configuration.
	if (!fFeatures.containsKey(featureId)) {
	fFeatures.put(featureId, state);
	// For newly added components who recognize this feature
	// but did not offer a default value, we need to make
	// sure these components will get an opportunity to read
	// the value before parsing begins.
	fConfigUpdated = true;
	}
	}
	}
	}
	if (recognizedProperties != null) {
	for (int i = 0; i < recognizedProperties.length; ++i) {
	String propertyId = recognizedProperties[i];
	Object value = component.getPropertyDefault(propertyId);
	if (value != null) {
	// Do not overwrite values already set on the configuration.
	if (!fProperties.containsKey(propertyId)) {
	fProperties.put(propertyId, value);
	// For newly added components who recognize this property
	// but did not offer a default value, we need to make
	// sure these components will get an opportunity to read
	// the value before parsing begins.
	fConfigUpdated = true;
	}
	}
	}
	}
	}

	/**
	* Reset all XML 1.0 components before parsing
	*/
	protected final void resetXML10() throws XNIException {
	// Reset XML 1.0 components
	fNamespaceScanner.reset(this);
	fDTDScanner.reset(this);
	} // resetXML10()

	/**
	* Reset all XML 1.1 components before parsing
	*/
	protected final void resetXML11() throws XNIException {
	// Reset XML 1.1 components
	fXML11NSDocScanner.reset(this);
	fXML11DTDScanner.reset(this);
	} // resetXML11()

	//
	// other methods
	//

	/** */
	public void resetNodePool() {
	// REVISIT: to implement: introduce a node pool to reuse DTM nodes.
	// reset this pool here.
	}

	private void initXML11Components() {
	if (!f11Initialized) {
	// create datatype factory
	fXML11DatatypeFactory = DTDDVFactory.getInstance(XML11_DATATYPE_VALIDATOR_FACTORY);

	// setup XML 1.1 DTD pipeline
	fXML11DTDScanner = new XML11DTDScannerImpl();
	addRecognizedParamsAndSetDefaults(fXML11DTDScanner);

	// setup XML 1.1. document pipeline - namespace aware
	fXML11NSDocScanner = new XML11NSDocumentScannerImpl();
	addRecognizedParamsAndSetDefaults(fXML11NSDocScanner);

	f11Initialized = true;
	}
	}
	}

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