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Java example source code file (XML11DTDConfiguration.java)

This example Java source code file (XML11DTDConfiguration.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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Java - Java tags/keywords

arraylist, dtddvfactory, ioexception, print_exception_stack_trace, runtimeexception, string, symboltable, util, xml11dtdconfiguration, xmlcomponent, xmlconfigurationexception, xmldocumentscannerimpl, xmldtdvalidator, xmlgrammarpool, xniexception

The XML11DTDConfiguration.java Java example source code

/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
/*
 * Copyright 2004 The Apache Software Foundation.
 *
 * Licensed 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.parsers;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Locale;

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.XML11DocumentScannerImpl;
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.XMLDocumentScannerImpl;
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.dtd.XML11DTDProcessor;
import com.sun.org.apache.xerces.internal.impl.dtd.XML11DTDValidator;
import com.sun.org.apache.xerces.internal.impl.dtd.XML11NSDTDValidator;
import com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDProcessor;
import com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator;
import com.sun.org.apache.xerces.internal.impl.dtd.XMLNSDTDValidator;
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.util.FeatureState;
import com.sun.org.apache.xerces.internal.util.ParserConfigurationSettings;
import com.sun.org.apache.xerces.internal.util.PropertyState;
import com.sun.org.apache.xerces.internal.util.Status;
import com.sun.org.apache.xerces.internal.util.SymbolTable;
import com.sun.org.apache.xerces.internal.xni.XMLDTDContentModelHandler;
import com.sun.org.apache.xerces.internal.xni.XMLDTDHandler;
import com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler;
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.XMLDocumentSource;
import com.sun.org.apache.xerces.internal.xni.parser.XMLEntityResolver;
import com.sun.org.apache.xerces.internal.xni.parser.XMLErrorHandler;
import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;
import com.sun.org.apache.xerces.internal.xni.parser.XMLPullParserConfiguration;

/**
 * This class is the DTD-only parser configuration
 * used to parse XML 1.0 and XML 1.1 documents.
 *
 * <p>
 * This class recognizes the following features and properties:
 * <ul>
 * <li>Features
 *  <ul>
 *   <li>http://xml.org/sax/features/validation
 *   <li>http://xml.org/sax/features/namespaces
 *   <li>http://xml.org/sax/features/external-general-entities
 *   <li>http://xml.org/sax/features/external-parameter-entities
 *   <li>http://apache.org/xml/features/continue-after-fatal-error
 *   <li>http://apache.org/xml/features/load-external-dtd
 *  </ul>
 * <li>Properties
 *  <ul>
 *   <li>http://xml.org/sax/properties/xml-string
 *   <li>http://apache.org/xml/properties/internal/symbol-table
 *   <li>http://apache.org/xml/properties/internal/error-handler
 *   <li>http://apache.org/xml/properties/internal/entity-resolver
 *   <li>http://apache.org/xml/properties/internal/error-reporter
 *   <li>http://apache.org/xml/properties/internal/entity-manager
 *   <li>http://apache.org/xml/properties/internal/document-scanner
 *   <li>http://apache.org/xml/properties/internal/dtd-scanner
 *   <li>http://apache.org/xml/properties/internal/grammar-pool
 *   <li>http://apache.org/xml/properties/internal/validator/dtd
 *   <li>http://apache.org/xml/properties/internal/datatype-validator-factory
 *  </ul>
 * </ul>
 * @author Elena Litani, IBM
 * @author Neil Graham, IBM
 * @author Michael Glavassevich, IBM
 * @author John Kim, IBM
 *
 * @version $Id: XML11DTDConfiguration.java,v 1.5 2010-11-01 04:40:10 joehw Exp $
 */
public class XML11DTDConfiguration extends ParserConfigurationSettings
    implements XMLPullParserConfiguration, XML11Configurable {

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

    // feature identifiers

    /** Feature identifier: validation. */
    protected static final String VALIDATION =
        Constants.SAX_FEATURE_PREFIX + Constants.VALIDATION_FEATURE;

    /** Feature identifier: namespaces. */
    protected static final String NAMESPACES =
        Constants.SAX_FEATURE_PREFIX + Constants.NAMESPACES_FEATURE;

    /** Feature identifier: external general entities. */
    protected static final String EXTERNAL_GENERAL_ENTITIES =
        Constants.SAX_FEATURE_PREFIX + Constants.EXTERNAL_GENERAL_ENTITIES_FEATURE;

    /** Feature identifier: external parameter entities. */
    protected static final String EXTERNAL_PARAMETER_ENTITIES =
        Constants.SAX_FEATURE_PREFIX + Constants.EXTERNAL_PARAMETER_ENTITIES_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;

    // property identifiers

        /** Property identifier: xml string. */
        protected static final String XML_STRING =
                Constants.SAX_PROPERTY_PREFIX + Constants.XML_STRING_PROPERTY;

        /** Property identifier: symbol table. */
        protected static final String SYMBOL_TABLE =
                Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;

        /** Property identifier: error handler. */
        protected static final String ERROR_HANDLER =
                Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_HANDLER_PROPERTY;

        /** Property identifier: entity resolver. */
        protected static final String ENTITY_RESOLVER =
                Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_RESOLVER_PROPERTY;

    /** 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 loader. */
    protected static final String DTD_PROCESSOR =
        Constants.XERCES_PROPERTY_PREFIX + Constants.DTD_PROCESSOR_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: JAXP schema language / DOM schema-type. */
    protected static final String JAXP_SCHEMA_LANGUAGE =
        Constants.JAXP_PROPERTY_PREFIX + Constants.SCHEMA_LANGUAGE;

    /** Property identifier: JAXP schema source/ DOM schema-location. */
    protected static final String JAXP_SCHEMA_SOURCE =
        Constants.JAXP_PROPERTY_PREFIX + Constants.SCHEMA_SOURCE;

    // debugging

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

    //
    // Data
    //
    protected SymbolTable fSymbolTable;
    protected XMLInputSource fInputSource;
    protected ValidationManager fValidationManager;
    protected XMLVersionDetector fVersionDetector;
    protected XMLLocator fLocator;
    protected Locale fLocale;

    /** XML 1.0 Components. */
    protected ArrayList fComponents;

    /** XML 1.1. Components. */
    protected ArrayList fXML11Components = null;

    /** Common components: XMLEntityManager, XMLErrorReporter */
    protected ArrayList fCommonComponents = null;

    /** The document handler. */
    protected XMLDocumentHandler fDocumentHandler;

    /** The DTD handler. */
    protected XMLDTDHandler fDTDHandler;

    /** The DTD content model handler. */
    protected XMLDTDContentModelHandler fDTDContentModelHandler;

    /** Last component in the document pipeline */
    protected XMLDocumentSource fLastComponent;

    /**
     * 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;

    //
    // XML 1.0 components
    //

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

    /** The XML 1.0 Document scanner that does namespace binding. */
    protected XMLNSDocumentScannerImpl fNamespaceScanner;

    /** The XML 1.0 Non-namespace implementation of scanner */
    protected XMLDocumentScannerImpl fNonNSScanner;

    /** The XML 1.0 DTD Validator: binds namespaces */
    protected XMLDTDValidator fDTDValidator;

    /** The XML 1.0 DTD Validator that does not bind namespaces */
    protected XMLDTDValidator fNonNSDTDValidator;

    /** The XML 1.0 DTD scanner. */
    protected XMLDTDScanner fDTDScanner;

    /** The XML 1.0 DTD Processor . */
    protected XMLDTDProcessor fDTDProcessor;

    //
    // XML 1.1 components
    //

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

    /** The XML 1.1 document scanner that does namespace binding. **/
    protected XML11NSDocumentScannerImpl fXML11NSDocScanner = null;

    /** The XML 1.1 document scanner that does not do namespace binding. **/
    protected XML11DocumentScannerImpl fXML11DocScanner = null;

    /** The XML 1.1 DTD validator that does namespace binding. **/
    protected XML11NSDTDValidator fXML11NSDTDValidator = null;

    /** The XML 1.1 DTD validator that does not do namespace binding. **/
    protected XML11DTDValidator fXML11DTDValidator = null;

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

    /** The XML 1.1 DTD processor. **/
    protected XML11DTDProcessor fXML11DTDProcessor = null;

    //
    // Common components
    //

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

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

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

    /** Current scanner */
    protected XMLDocumentScanner fCurrentScanner;

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

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

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

    //
    // Constructors
    //

    /** Default constructor. */
    public XML11DTDConfiguration() {
        this(null, null, null);
    } // <init>()

    /**
     * Constructs a parser configuration using the specified symbol table.
     *
     * @param symbolTable The symbol table to use.
     */
    public XML11DTDConfiguration(SymbolTable symbolTable) {
        this(symbolTable, null, null);
    } // <init>(SymbolTable)

    /**
     * Constructs a parser configuration using the specified symbol table and
     * grammar pool.
     * <p>
     * <strong>REVISIT:
     * 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 XML11DTDConfiguration(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:
     * 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 XML11DTDConfiguration(
        SymbolTable symbolTable,
        XMLGrammarPool grammarPool,
        XMLComponentManager parentSettings) {

                super(parentSettings);

                // create a vector to hold all the components in use
                // XML 1.0 specialized components
                fComponents = new ArrayList();
                // XML 1.1 specialized components
                fXML11Components = new ArrayList();
                // Common components for XML 1.1. and XML 1.0
                fCommonComponents = new ArrayList();

                // create table for features and properties
                fFeatures = new HashMap();
                fProperties = new HashMap();

        // add default recognized features
        final String[] recognizedFeatures =
            {
                CONTINUE_AFTER_FATAL_ERROR, LOAD_EXTERNAL_DTD, // from XMLDTDScannerImpl
                                VALIDATION,
                                NAMESPACES,
                                EXTERNAL_GENERAL_ENTITIES,
                                EXTERNAL_PARAMETER_ENTITIES,
                                PARSER_SETTINGS
                        };
        addRecognizedFeatures(recognizedFeatures);
                // set state for default features
                fFeatures.put(VALIDATION, Boolean.FALSE);
                fFeatures.put(NAMESPACES, Boolean.TRUE);
                fFeatures.put(EXTERNAL_GENERAL_ENTITIES, Boolean.TRUE);
                fFeatures.put(EXTERNAL_PARAMETER_ENTITIES, Boolean.TRUE);
                fFeatures.put(CONTINUE_AFTER_FATAL_ERROR, Boolean.FALSE);
                fFeatures.put(LOAD_EXTERNAL_DTD, Boolean.TRUE);
                fFeatures.put(PARSER_SETTINGS, Boolean.TRUE);

        // add default recognized properties
        final String[] recognizedProperties =
            {
                                SYMBOL_TABLE,
                                ERROR_HANDLER,
                                ENTITY_RESOLVER,
                ERROR_REPORTER,
                ENTITY_MANAGER,
                DOCUMENT_SCANNER,
                DTD_SCANNER,
                DTD_PROCESSOR,
                DTD_VALIDATOR,
                                DATATYPE_VALIDATOR_FACTORY,
                                VALIDATION_MANAGER,
                                XML_STRING,
                XMLGRAMMAR_POOL,
                JAXP_SCHEMA_SOURCE,
                JAXP_SCHEMA_LANGUAGE};
        addRecognizedProperties(recognizedProperties);

                if (symbolTable == null) {
                        symbolTable = new SymbolTable();
                }
                fSymbolTable = symbolTable;
                fProperties.put(SYMBOL_TABLE, fSymbolTable);

        fGrammarPool = grammarPool;
        if (fGrammarPool != null) {
                        fProperties.put(XMLGRAMMAR_POOL, fGrammarPool);
        }

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

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

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

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

        fDTDProcessor = new XMLDTDProcessor();
                fProperties.put(DTD_PROCESSOR, fDTDProcessor);
        addComponent((XMLComponent) fDTDProcessor);

        fDTDValidator = new XMLNSDTDValidator();
                fProperties.put(DTD_VALIDATOR, fDTDValidator);
        addComponent(fDTDValidator);

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

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

        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);
        }

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

                fConfigUpdated = false;

    } // <init>(SymbolTable,XMLGrammarPool)

    //
    // Public methods
    //
    /**
     * 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)

    /**
     * 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 {
        fLocale = locale;
        fErrorReporter.setLocale(locale);
    } // setLocale(Locale)

        /**
         * Sets the document handler on the last component in the pipeline
         * to receive information about the document.
         *
         * @param documentHandler   The document handler.
         */
        public void setDocumentHandler(XMLDocumentHandler documentHandler) {
                fDocumentHandler = documentHandler;
                if (fLastComponent != null) {
                        fLastComponent.setDocumentHandler(fDocumentHandler);
                        if (fDocumentHandler !=null){
                                fDocumentHandler.setDocumentSource(fLastComponent);
                        }
                }
        } // setDocumentHandler(XMLDocumentHandler)

        /** Returns the registered document handler. */
        public XMLDocumentHandler getDocumentHandler() {
                return fDocumentHandler;
        } // getDocumentHandler():XMLDocumentHandler

        /**
         * Sets the DTD handler.
         *
         * @param dtdHandler The DTD handler.
         */
        public void setDTDHandler(XMLDTDHandler dtdHandler) {
                fDTDHandler = dtdHandler;
        } // setDTDHandler(XMLDTDHandler)

        /** Returns the registered DTD handler. */
        public XMLDTDHandler getDTDHandler() {
                return fDTDHandler;
        } // getDTDHandler():XMLDTDHandler

        /**
         * Sets the DTD content model handler.
         *
         * @param handler The DTD content model handler.
         */
        public void setDTDContentModelHandler(XMLDTDContentModelHandler handler) {
                fDTDContentModelHandler = handler;
        } // setDTDContentModelHandler(XMLDTDContentModelHandler)

        /** Returns the registered DTD content model handler. */
        public XMLDTDContentModelHandler getDTDContentModelHandler() {
                return fDTDContentModelHandler;
        } // getDTDContentModelHandler():XMLDTDContentModelHandler

        /**
         * Sets the resolver used to resolve external entities. The EntityResolver
         * interface supports resolution of public and system identifiers.
         *
         * @param resolver The new entity resolver. Passing a null value will
         *                 uninstall the currently installed resolver.
         */
        public void setEntityResolver(XMLEntityResolver resolver) {
                fProperties.put(ENTITY_RESOLVER, resolver);
        } // setEntityResolver(XMLEntityResolver)

        /**
         * Return the current entity resolver.
         *
         * @return The current entity resolver, or null if none
         *         has been registered.
         * @see #setEntityResolver
         */
        public XMLEntityResolver getEntityResolver() {
                return (XMLEntityResolver)fProperties.get(ENTITY_RESOLVER);
        } // getEntityResolver():XMLEntityResolver

        /**
         * Allow an application to register an error event handler.
         *
         * <p>If the application does not register an error handler, all
         * error events reported by the SAX parser will be silently
         * ignored; however, normal processing may not continue.  It is
         * highly recommended that all SAX applications implement an
         * error handler to avoid unexpected bugs.</p>
         *
         * <p>Applications may register a new or different handler in the
         * middle of a parse, and the SAX parser must begin using the new
         * handler immediately.</p>
         *
         * @param errorHandler The error handler.
         * @exception java.lang.NullPointerException If the handler
         *            argument is null.
         * @see #getErrorHandler
         */
        public void setErrorHandler(XMLErrorHandler errorHandler) {
                fProperties.put(ERROR_HANDLER, errorHandler);
        } // setErrorHandler(XMLErrorHandler)

        /**
         * Return the current error handler.
         *
         * @return The current error handler, or null if none
         *         has been registered.
         * @see #setErrorHandler
         */
        public XMLErrorHandler getErrorHandler() {
                // REVISIT: Should this be a property?
                return (XMLErrorHandler)fProperties.get(ERROR_HANDLER);
        } // getErrorHandler():XMLErrorHandler


    /**
     * 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();
    }

    /**
     * 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)

    public boolean parse(boolean complete) throws XNIException, IOException {
        //
        // reset and configure pipeline and set InputSource.
        if (fInputSource != null) {
            try {
                                fValidationManager.reset();
                fVersionDetector.reset(this);
                resetCommon();

                short version = fVersionDetector.determineDocVersion(fInputSource);
                if (version == Constants.XML_VERSION_1_1) {
                    initXML11Components();
                    configureXML11Pipeline();
                    resetXML11();
                } else {
                    configurePipeline();
                    reset();
                }

                // 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

        /**
         * 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
         *                                   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
                int count = fComponents.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fComponents.get(i);
                        c.setFeature(featureId, state);
                }
                // forward it to common components
                count = fCommonComponents.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fCommonComponents.get(i);
                        c.setFeature(featureId, state);
                }

                // forward to every XML 1.1 component
                count = fXML11Components.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fXML11Components.get(i);
                        try{
                                c.setFeature(featureId, state);
                        }
                        catch (Exception e){
                                // no op
                        }
                }
                // save state if noone "objects"
                super.setFeature(featureId, state);

        } // setFeature(String,boolean)

        /**
         * setProperty
         *
         * @param propertyId
         * @param value
         */
        public void setProperty(String propertyId, Object value)
                throws XMLConfigurationException {
                fConfigUpdated = true;
                // forward to every XML 1.0 component
                int count = fComponents.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fComponents.get(i);
                        c.setProperty(propertyId, value);
                }
                // forward it to every common Component
                count = fCommonComponents.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fCommonComponents.get(i);
                        c.setProperty(propertyId, value);
                }
                // forward it to every XML 1.1 component
                count = fXML11Components.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fXML11Components.get(i);
                        try{
                                c.setProperty(propertyId, value);
                        }
                        catch (Exception e){
                                // ignore it
                        }
                }

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

        } // setProperty(String,Object)


        /** Returns the locale. */
        public Locale getLocale() {
                return fLocale;
        } // getLocale():Locale

        /**
         * reset all XML 1.0 components before parsing and namespace context
         */
        protected void reset() throws XNIException {
                int count = fComponents.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fComponents.get(i);
                        c.reset(this);
                }

        } // reset()

        /**
         * reset all common components before parsing
         */
        protected void resetCommon() throws XNIException {
                // reset common components
                int count = fCommonComponents.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fCommonComponents.get(i);
                        c.reset(this);
                }

        } // resetCommon()

        /**
         * reset all components before parsing and namespace context
         */
        protected void resetXML11() throws XNIException {
                // reset every component
                int count = fXML11Components.size();
                for (int i = 0; i < count; i++) {
                        XMLComponent c = (XMLComponent) fXML11Components.get(i);
                        c.reset(this);
                }

        } // resetXML11()

    /**
     *  Configures the XML 1.1 pipeline.
     *  Note: this method also resets the new XML11 components.
     */
    protected void configureXML11Pipeline() {
        if (fCurrentDVFactory != fXML11DatatypeFactory) {
            fCurrentDVFactory = fXML11DatatypeFactory;
            setProperty(DATATYPE_VALIDATOR_FACTORY, fCurrentDVFactory);
        }
        if (fCurrentDTDScanner != fXML11DTDScanner) {
            fCurrentDTDScanner = fXML11DTDScanner;
            setProperty(DTD_SCANNER, fCurrentDTDScanner);
                        setProperty(DTD_PROCESSOR, fXML11DTDProcessor);
        }

        fXML11DTDScanner.setDTDHandler(fXML11DTDProcessor);
        fXML11DTDProcessor.setDTDSource(fXML11DTDScanner);
        fXML11DTDProcessor.setDTDHandler(fDTDHandler);
        if (fDTDHandler != null) {
            fDTDHandler.setDTDSource(fXML11DTDProcessor);
        }

        fXML11DTDScanner.setDTDContentModelHandler(fXML11DTDProcessor);
        fXML11DTDProcessor.setDTDContentModelSource(fXML11DTDScanner);
        fXML11DTDProcessor.setDTDContentModelHandler(fDTDContentModelHandler);
        if (fDTDContentModelHandler != null) {
            fDTDContentModelHandler.setDTDContentModelSource(fXML11DTDProcessor);
        }

        // setup XML 1.1 document pipeline
        if (fFeatures.get(NAMESPACES) == Boolean.TRUE) {
            if (fCurrentScanner != fXML11NSDocScanner) {
                fCurrentScanner = fXML11NSDocScanner;
                setProperty(DOCUMENT_SCANNER, fXML11NSDocScanner);
                setProperty(DTD_VALIDATOR, fXML11NSDTDValidator);
            }

            fXML11NSDocScanner.setDTDValidator(fXML11NSDTDValidator);
            fXML11NSDocScanner.setDocumentHandler(fXML11NSDTDValidator);
            fXML11NSDTDValidator.setDocumentSource(fXML11NSDocScanner);
            fXML11NSDTDValidator.setDocumentHandler(fDocumentHandler);

            if (fDocumentHandler != null) {
                fDocumentHandler.setDocumentSource(fXML11NSDTDValidator);
            }
            fLastComponent = fXML11NSDTDValidator;

        } else {
                        // create components
                          if (fXML11DocScanner == null) {
                                        // non namespace document pipeline
                                        fXML11DocScanner = new XML11DocumentScannerImpl();
                                        addXML11Component(fXML11DocScanner);
                                        fXML11DTDValidator = new XML11DTDValidator();
                                        addXML11Component(fXML11DTDValidator);
                          }
            if (fCurrentScanner != fXML11DocScanner) {
                fCurrentScanner = fXML11DocScanner;
                setProperty(DOCUMENT_SCANNER, fXML11DocScanner);
                setProperty(DTD_VALIDATOR, fXML11DTDValidator);
            }
            fXML11DocScanner.setDocumentHandler(fXML11DTDValidator);
            fXML11DTDValidator.setDocumentSource(fXML11DocScanner);
            fXML11DTDValidator.setDocumentHandler(fDocumentHandler);

            if (fDocumentHandler != null) {
                fDocumentHandler.setDocumentSource(fXML11DTDValidator);
            }
            fLastComponent = fXML11DTDValidator;
        }

    } // configureXML11Pipeline()

    /** Configures the pipeline. */
    protected void configurePipeline() {
        if (fCurrentDVFactory != fDatatypeValidatorFactory) {
            fCurrentDVFactory = fDatatypeValidatorFactory;
            // use XML 1.0 datatype library
            setProperty(DATATYPE_VALIDATOR_FACTORY, fCurrentDVFactory);
        }

        // setup DTD pipeline
        if (fCurrentDTDScanner != fDTDScanner) {
            fCurrentDTDScanner = fDTDScanner;
            setProperty(DTD_SCANNER, fCurrentDTDScanner);
            setProperty(DTD_PROCESSOR, fDTDProcessor);
        }
        fDTDScanner.setDTDHandler(fDTDProcessor);
        fDTDProcessor.setDTDSource(fDTDScanner);
        fDTDProcessor.setDTDHandler(fDTDHandler);
        if (fDTDHandler != null) {
            fDTDHandler.setDTDSource(fDTDProcessor);
        }

        fDTDScanner.setDTDContentModelHandler(fDTDProcessor);
        fDTDProcessor.setDTDContentModelSource(fDTDScanner);
        fDTDProcessor.setDTDContentModelHandler(fDTDContentModelHandler);
        if (fDTDContentModelHandler != null) {
            fDTDContentModelHandler.setDTDContentModelSource(fDTDProcessor);
        }

        // setup document pipeline
        if (fFeatures.get(NAMESPACES) == Boolean.TRUE) {
            if (fCurrentScanner != fNamespaceScanner) {
                fCurrentScanner = fNamespaceScanner;
                setProperty(DOCUMENT_SCANNER, fNamespaceScanner);
                setProperty(DTD_VALIDATOR, fDTDValidator);
            }
            fNamespaceScanner.setDTDValidator(fDTDValidator);
            fNamespaceScanner.setDocumentHandler(fDTDValidator);
            fDTDValidator.setDocumentSource(fNamespaceScanner);
            fDTDValidator.setDocumentHandler(fDocumentHandler);
            if (fDocumentHandler != null) {
                fDocumentHandler.setDocumentSource(fDTDValidator);
            }
            fLastComponent = fDTDValidator;
        } else {
            // create components
            if (fNonNSScanner == null) {
                fNonNSScanner = new XMLDocumentScannerImpl();
                fNonNSDTDValidator = new XMLDTDValidator();
                // add components
                addComponent((XMLComponent) fNonNSScanner);
                addComponent((XMLComponent) fNonNSDTDValidator);
            }
            if (fCurrentScanner != fNonNSScanner) {
                fCurrentScanner = fNonNSScanner;
                setProperty(DOCUMENT_SCANNER, fNonNSScanner);
                setProperty(DTD_VALIDATOR, fNonNSDTDValidator);
            }

            fNonNSScanner.setDocumentHandler(fNonNSDTDValidator);
            fNonNSDTDValidator.setDocumentSource(fNonNSScanner);
            fNonNSDTDValidator.setDocumentHandler(fDocumentHandler);
            if (fDocumentHandler != null) {
                fDocumentHandler.setDocumentSource(fNonNSDTDValidator);
            }
            fLastComponent = fNonNSDTDValidator;
        }

    } // configurePipeline()


    // 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
     *                                   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;
            }

            // special performance feature: only component manager is allowed to set it.
            if (suffixLength == Constants.PARSER_SETTINGS.length() &&
                featureId.endsWith(Constants.PARSER_SETTINGS)) {
                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
     *                                   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;
            }
        }

        // special cases
        if (propertyId.startsWith(Constants.SAX_PROPERTY_PREFIX)) {
            final int suffixLength = propertyId.length() - Constants.SAX_PROPERTY_PREFIX.length();

            //
            // http://xml.org/sax/properties/xml-string
            // Value type: String
            // Access: read-only
            //   Get the literal string of characters associated with the
            //   current event.  If the parser recognises and supports this
            //   property but is not currently parsing text, it should return
            //   null (this is a good way to check for availability before the
            //   parse begins).
            //
            if (suffixLength == Constants.XML_STRING_PROPERTY.length() &&
                propertyId.endsWith(Constants.XML_STRING_PROPERTY)) {
                // REVISIT - we should probably ask xml-dev for a precise
                // definition of what this is actually supposed to return, and
                // in exactly which circumstances.
                return PropertyState.NOT_SUPPORTED;
            }
        }

        //
        // Not recognized
        //

        return super.checkProperty(propertyId);

    } // checkProperty(String)


    /**
     * Adds a component to the parser configuration. This method will
     * also add all of the component's recognized features and properties
     * to the list of default recognized features and properties.
     *
     * @param component The component to add.
     */
    protected void addComponent(XMLComponent component) {

        // don't add a component more than once
        if (fComponents.contains(component)) {
            return;
        }
        fComponents.add(component);
        addRecognizedParamsAndSetDefaults(component);

    } // addComponent(XMLComponent)

    /**
     * Adds common component to the parser configuration. This method will
     * also add all of the component's recognized features and properties
     * to the list of default recognized features and properties.
     *
     * @param component The component to add.
     */
    protected void addCommonComponent(XMLComponent component) {

        // don't add a component more than once
        if (fCommonComponents.contains(component)) {
            return;
        }
        fCommonComponents.add(component);
        addRecognizedParamsAndSetDefaults(component);

    } // addCommonComponent(XMLComponent)

    /**
     * Adds an XML 1.1 component to the parser configuration. This method will
     * also add all of the component's recognized features and properties
     * to the list of default recognized features and properties.
     *
     * @param component The component to add.
     */
    protected void addXML11Component(XMLComponent component) {

        // don't add a component more than once
        if (fXML11Components.contains(component)) {
            return;
        }
        fXML11Components.add(component);
        addRecognizedParamsAndSetDefaults(component);

    } // addXML11Component(XMLComponent)

    /**
     * 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
     */
    protected 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;
                    }
                }
            }
        }
    }

    private void initXML11Components() {
        if (!f11Initialized) {

            // create datatype factory
            fXML11DatatypeFactory = DTDDVFactory.getInstance(XML11_DATATYPE_VALIDATOR_FACTORY);

            // setup XML 1.1 DTD pipeline
            fXML11DTDScanner = new XML11DTDScannerImpl();
            addXML11Component(fXML11DTDScanner);
            fXML11DTDProcessor = new XML11DTDProcessor();
            addXML11Component(fXML11DTDProcessor);

            // setup XML 1.1. document pipeline - namespace aware
            fXML11NSDocScanner = new XML11NSDocumentScannerImpl();
            addXML11Component(fXML11NSDocScanner);
            fXML11NSDTDValidator = new XML11NSDTDValidator();
            addXML11Component(fXML11NSDTDValidator);

            f11Initialized = true;
        }
    }

} // class XML11DTDConfiguration

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