xmlschemavalidator.java

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/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999-2004 The Apache Software Foundation.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

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

import java.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.HashMap;
import java.util.Stack;
import java.util.Vector;

import com.sun.org.apache.xerces.internal.impl.Constants;
import com.sun.org.apache.xerces.internal.impl.RevalidationHandler;
import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.impl.dv.DatatypeException;
import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
import com.sun.org.apache.xerces.internal.impl.dv.ValidatedInfo;
import com.sun.org.apache.xerces.internal.impl.dv.XSSimpleType;
import com.sun.org.apache.xerces.internal.impl.dv.xs.XSSimpleTypeDecl;
import com.sun.org.apache.xerces.internal.impl.validation.ValidationManager;
import com.sun.org.apache.xerces.internal.impl.validation.ValidationState;
import com.sun.org.apache.xerces.internal.impl.xs.identity.Field;
import com.sun.org.apache.xerces.internal.impl.xs.identity.FieldActivator;
import com.sun.org.apache.xerces.internal.impl.xs.identity.IdentityConstraint;
import com.sun.org.apache.xerces.internal.impl.xs.identity.KeyRef;
import com.sun.org.apache.xerces.internal.impl.xs.identity.Selector;
import com.sun.org.apache.xerces.internal.impl.xs.identity.UniqueOrKey;
import com.sun.org.apache.xerces.internal.impl.xs.identity.ValueStore;
import com.sun.org.apache.xerces.internal.impl.xs.identity.XPathMatcher;
import com.sun.org.apache.xerces.internal.impl.xs.models.CMBuilder;
import com.sun.org.apache.xerces.internal.impl.xs.models.CMNodeFactory;
import com.sun.org.apache.xerces.internal.impl.xs.models.XSCMValidator;
import com.sun.org.apache.xerces.internal.xs.XSConstants;
import com.sun.org.apache.xerces.internal.xs.XSObjectList;
import com.sun.org.apache.xerces.internal.xs.XSTypeDefinition;
import com.sun.org.apache.xerces.internal.util.AugmentationsImpl;
import com.sun.org.apache.xerces.internal.util.IntStack;
import com.sun.org.apache.xerces.internal.util.SymbolTable;
import com.sun.org.apache.xerces.internal.util.XMLChar;
import com.sun.org.apache.xerces.internal.util.XMLResourceIdentifierImpl;
import com.sun.org.apache.xerces.internal.util.XMLSymbols;
import com.sun.org.apache.xerces.internal.xni.Augmentations;
import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
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.XMLResourceIdentifier;
import com.sun.org.apache.xerces.internal.xni.XMLString;
import com.sun.org.apache.xerces.internal.xni.XNIException;
import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription;
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.XMLDocumentFilter;
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.XMLInputSource;
import com.sun.org.apache.xerces.internal.xs.AttributePSVI;
import com.sun.org.apache.xerces.internal.xs.ElementPSVI;
import com.sun.org.apache.xerces.internal.xs.XSComplexTypeDefinition;

/**
 * The XML Schema validator. The validator implements a document
 * filter: receiving document events from the scanner; validating
 * the content and structure; augmenting the InfoSet, if applicable;
 * and notifying the parser of the information resulting from the
 * validation process.
 * <p>
 * This component requires the following features and properties from the
 * component manager that uses it:
 * <ul>
 *  <li>http://xml.org/sax/features/validation</li>
 *  <li>http://apache.org/xml/properties/internal/symbol-table</li>
 *  <li>http://apache.org/xml/properties/internal/error-reporter</li>
 *  <li>http://apache.org/xml/properties/internal/entity-resolver</li>
 * </ul>
 *
 * @author Sandy Gao IBM
 * @author Elena Litani IBM
 * @author Andy Clark IBM
 * @author Neeraj Bajaj, Sun Microsystems, inc.
 * @version $Id: XMLSchemaValidator.java,v 1.155 2004/03/25 04:03:23 mrglavas Exp $
 */
public class XMLSchemaValidator
implements XMLComponent, XMLDocumentFilter, FieldActivator, RevalidationHandler {
    
    //
    // Constants
    //
    private static final boolean DEBUG = false;
    
    // feature identifiers
    
    /** Feature identifier: validation. */
    protected static final String VALIDATION =
    Constants.SAX_FEATURE_PREFIX + Constants.VALIDATION_FEATURE;
    
    /** Feature identifier: validation. */
    protected static final String SCHEMA_VALIDATION =
    Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_VALIDATION_FEATURE;
    
    /** Feature identifier: schema full checking*/
    protected static final String SCHEMA_FULL_CHECKING =
    Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_FULL_CHECKING;
    
    /** Feature identifier: dynamic validation. */
    protected static final String DYNAMIC_VALIDATION =
    Constants.XERCES_FEATURE_PREFIX + Constants.DYNAMIC_VALIDATION_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: augment PSVI */
    protected static final String SCHEMA_AUGMENT_PSVI =
    Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_AUGMENT_PSVI;
    
    /** Feature identifier: whether to recognize java encoding names */
    protected static final String ALLOW_JAVA_ENCODINGS =
    Constants.XERCES_FEATURE_PREFIX + Constants.ALLOW_JAVA_ENCODINGS_FEATURE;
    
    /** Feature identifier: standard uri conformant feature. */
    protected static final String STANDARD_URI_CONFORMANT_FEATURE =
    Constants.XERCES_FEATURE_PREFIX + Constants.STANDARD_URI_CONFORMANT_FEATURE;
    
    /** Feature identifier: whether to continue parsing a schema after a fatal error is encountered */
    protected static final String CONTINUE_AFTER_FATAL_ERROR =
    Constants.XERCES_FEATURE_PREFIX + Constants.CONTINUE_AFTER_FATAL_ERROR_FEATURE;
    
    /** Feature identifier: ignore xsi:schemaLocation and xsi:noNamespaceSchemaLocation */
    protected static final String IGNORE_SCHEMA_LOCATION_HINTS =
    Constants.XERCES_FEATURE_PREFIX + Constants.IGNORE_SCHEMA_LOCATION_HINTS;
    
    protected static final String CHANGE_IGNORABLE_CHARACTERS_INTO_IGNORABLE_WHITESPACES =
    Constants.XERCES_FEATURE_PREFIX + Constants.CHANGE_IGNORABLE_CHARACTERS_INTO_IGNORABLE_WHITESPACES;
    
    protected static final String PARSER_SETTINGS =
    Constants.XERCES_FEATURE_PREFIX + Constants.PARSER_SETTINGS;
    
    // property identifiers
    
    /** Property identifier: symbol table. */
    public static final String SYMBOL_TABLE =
    Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;
    
    /** Property identifier: error reporter. */
    public static final String ERROR_REPORTER =
    Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
    
    /** Property identifier: entity resolver. */
    public static final String ENTITY_RESOLVER =
    Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_RESOLVER_PROPERTY;
    
    /** Property identifier: grammar pool. */
    public static final String XMLGRAMMAR_POOL =
    Constants.XERCES_PROPERTY_PREFIX + Constants.XMLGRAMMAR_POOL_PROPERTY;
    
    protected static final String VALIDATION_MANAGER =
    Constants.XERCES_PROPERTY_PREFIX + Constants.VALIDATION_MANAGER_PROPERTY;
    
    protected static final String ENTITY_MANAGER =
    Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_MANAGER_PROPERTY;
    
    /** Property identifier: schema location. */
    protected static final String SCHEMA_LOCATION =
    Constants.XERCES_PROPERTY_PREFIX + Constants.SCHEMA_LOCATION;
    
    /** Property identifier: no namespace schema location. */
    protected static final String SCHEMA_NONS_LOCATION =
    Constants.XERCES_PROPERTY_PREFIX + Constants.SCHEMA_NONS_LOCATION;
    
    /** Property identifier: JAXP schema source. */
    protected static final String JAXP_SCHEMA_SOURCE =
    Constants.JAXP_PROPERTY_PREFIX + Constants.SCHEMA_SOURCE;
    
    /** Property identifier: JAXP schema language. */
    protected static final String JAXP_SCHEMA_LANGUAGE =
    Constants.JAXP_PROPERTY_PREFIX + Constants.SCHEMA_LANGUAGE;
    
    // recognized features and properties
    
    /** Recognized features. */
    private static final String[] RECOGNIZED_FEATURES = {
        VALIDATION,
        SCHEMA_VALIDATION,
        DYNAMIC_VALIDATION,
        SCHEMA_FULL_CHECKING,
        ALLOW_JAVA_ENCODINGS,
        CONTINUE_AFTER_FATAL_ERROR,
        STANDARD_URI_CONFORMANT_FEATURE,
        IGNORE_SCHEMA_LOCATION_HINTS,
        CHANGE_IGNORABLE_CHARACTERS_INTO_IGNORABLE_WHITESPACES };
        
        /** Feature defaults. */
        private static final Boolean[] FEATURE_DEFAULTS = { null,
        // NOTE: The following defaults are nulled out on purpose.
        //       If they are set, then when the XML Schema validator
        //       is constructed dynamically, these values may override
        //       those set by the application. This goes against the
        //       whole purpose of XMLComponent#getFeatureDefault but
        //       it can't be helped in this case. -Ac
        null, //Boolean.FALSE,
        null, //Boolean.FALSE,
        null, //Boolean.FALSE,
        null, //Boolean.FALSE,
        null, //Boolean.FALSE,
        null, //Boolean.FALSE,
        null, //Boolean.FALSE,
        null };
        
        /** Recognized properties. */
        private static final String[] RECOGNIZED_PROPERTIES = {
            SYMBOL_TABLE,
            ERROR_REPORTER,
            ENTITY_RESOLVER,
            VALIDATION_MANAGER,
            SCHEMA_LOCATION,
            SCHEMA_NONS_LOCATION,
            JAXP_SCHEMA_SOURCE,
            JAXP_SCHEMA_LANGUAGE,
        };
        
        /** Property defaults. */
        private static final Object[] PROPERTY_DEFAULTS =
        { null, null, null, null, null, null, null, null, };
        
        // this is the number of valuestores of each kind
        // we expect an element to have.  It's almost
        // never > 1; so leave it at that.
        protected static final int ID_CONSTRAINT_NUM = 1;
        
        //
        // Data
        //
        
        /** current PSVI element info */
        protected ElementPSVImpl fCurrentPSVI = new ElementPSVImpl();
        
        // since it is the responsibility of each component to an
        // Augmentations parameter if one is null, to save ourselves from
        // having to create this object continually, it is created here.
        // If it is not present in calls that we're passing on, we *must*
        // clear this before we introduce it into the pipeline.
        protected final AugmentationsImpl fAugmentations = new AugmentationsImpl();
        
        /**
         * Map which is used to catch instance documents that try
         * and match a field several times in the same scope.
         */
        protected final HashMap fMayMatchFieldMap = new HashMap();