xsdhandler.java

java1.6众多例子参考

/*
 * Copyright 1999-2005 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.impl.xs.traversers;

import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Hashtable;
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.XMLEntityManager;
import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaNamespaceSupport;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaException;
import com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader;
import com.sun.org.apache.xerces.internal.impl.xs.XSComplexTypeDecl;
import com.sun.org.apache.xerces.internal.impl.xs.XSDDescription;
import com.sun.org.apache.xerces.internal.impl.xs.XSDeclarationPool;
import com.sun.org.apache.xerces.internal.impl.xs.XSElementDecl;
import com.sun.org.apache.xerces.internal.impl.xs.XSGrammarBucket;
import com.sun.org.apache.xerces.internal.impl.xs.XSGroupDecl;
import com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter;
import com.sun.org.apache.xerces.internal.impl.xs.XSModelGroupImpl;
import com.sun.org.apache.xerces.internal.impl.xs.XSParticleDecl;
import com.sun.org.apache.xerces.internal.impl.xs.opti.ElementImpl;
import com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaDOMParser;
import com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaParsingConfig;
import com.sun.org.apache.xerces.internal.impl.xs.util.SimpleLocator;

import com.sun.org.apache.xerces.internal.util.DOMUtil;
import com.sun.org.apache.xerces.internal.parsers.SAXParser;
import com.sun.org.apache.xerces.internal.parsers.XML11Configuration;
import com.sun.org.apache.xerces.internal.util.DOMInputSource;
import com.sun.org.apache.xerces.internal.util.DefaultErrorHandler;
import com.sun.org.apache.xerces.internal.util.SAXInputSource;
import com.sun.org.apache.xerces.internal.util.SecurityManager;
import com.sun.org.apache.xerces.internal.util.SymbolTable;
import com.sun.org.apache.xerces.internal.util.XMLSymbols;
import com.sun.org.apache.xerces.internal.util.URI.MalformedURIException;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xni.grammars.Grammar;
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.grammars.XMLSchemaDescription;
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.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.xs.XSObject;
import com.sun.org.apache.xerces.internal.xs.XSParticle;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;


/**
 * The purpose of this class is to co-ordinate the construction of a
 * grammar object corresponding to a schema.  To do this, it must be
 * prepared to parse several schema documents (for instance if the
 * schema document originally referred to contains <include> or
 * <redefined> information items).  If any of the schemas imports a
 * schema, other grammars may be constructed as a side-effect.
 *
 * @xerces.internal 
 *
 * @author Neil Graham, IBM
 * @author Pavani Mukthipudi, Sun Microsystems
 * 
 * @version $Id: XSDHandler.java,v 1.3.2.2 2007/10/20 17:56:44 joehw Exp $
 */
public class XSDHandler {
    
    /** Feature identifier: validation. */
    protected static final String VALIDATION =
        Constants.SAX_FEATURE_PREFIX + Constants.VALIDATION_FEATURE;
    
    /** feature identifier: XML Schema validation */
    protected static final String XMLSCHEMA_VALIDATION =
        Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_VALIDATION_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:  allow java encodings */
    protected static final String STANDARD_URI_CONFORMANT_FEATURE =
        Constants.XERCES_FEATURE_PREFIX + Constants.STANDARD_URI_CONFORMANT_FEATURE;
    
    /** Feature: disallow doctype*/
    protected static final String DISALLOW_DOCTYPE =
        Constants.XERCES_FEATURE_PREFIX + Constants.DISALLOW_DOCTYPE_DECL_FEATURE;
    
    /** Feature: generate synthetic annotations */
    protected static final String GENERATE_SYNTHETIC_ANNOTATIONS = 
        Constants.XERCES_FEATURE_PREFIX + Constants.GENERATE_SYNTHETIC_ANNOTATIONS_FEATURE;
    
    /** Feature identifier: validate annotations. */
    protected static final String VALIDATE_ANNOTATIONS =
        Constants.XERCES_FEATURE_PREFIX + Constants.VALIDATE_ANNOTATIONS_FEATURE;
    
    /** Feature identifier: honour all schemaLocations */
    protected static final String HONOUR_ALL_SCHEMALOCATIONS = 
      Constants.XERCES_FEATURE_PREFIX + Constants.HONOUR_ALL_SCHEMALOCATIONS_FEATURE;
    
    /** Feature identifier: namespace prefixes. */
    private static final String NAMESPACE_PREFIXES =
        Constants.SAX_FEATURE_PREFIX + Constants.NAMESPACE_PREFIXES_FEATURE;
    
    /** Feature identifier: string interning. */
    protected static final String STRING_INTERNING =
        Constants.SAX_FEATURE_PREFIX + Constants.STRING_INTERNING_FEATURE;
   
    /** Property identifier: error handler. */
    protected static final String ERROR_HANDLER =
        Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_HANDLER_PROPERTY;
    
    /** Property identifier: JAXP schema source. */
    protected static final String JAXP_SCHEMA_SOURCE =
        Constants.JAXP_PROPERTY_PREFIX + Constants.SCHEMA_SOURCE;
    
    /** Property identifier: entity resolver. */
    public static final String ENTITY_RESOLVER =
        Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_RESOLVER_PROPERTY;
    /** Property identifier: entity manager. */
    protected static final String ENTITY_MANAGER =
        Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_MANAGER_PROPERTY;
    
    /** Property identifier: error reporter. */
    public static final String ERROR_REPORTER =
        Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
    
    /** Property identifier: grammar pool. */
    public static final String XMLGRAMMAR_POOL =
        Constants.XERCES_PROPERTY_PREFIX + Constants.XMLGRAMMAR_POOL_PROPERTY;
    
    /** Property identifier: symbol table. */
    public static final String SYMBOL_TABLE =
        Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;
    
    /** Property identifier: security manager. */
    protected static final String SECURITY_MANAGER =
        Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;
    
    private static final String SECURE_PROCESSING =
        Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;
   
    protected static final boolean DEBUG_NODE_POOL = false;
    
    // Data
    
    // different sorts of declarations; should make lookup and
    // traverser calling more efficient/less bulky.
    final static int ATTRIBUTE_TYPE          = 1;
    final static int ATTRIBUTEGROUP_TYPE     = 2;
    final static int ELEMENT_TYPE            = 3;
    final static int GROUP_TYPE              = 4;
    final static int IDENTITYCONSTRAINT_TYPE = 5;
    final static int NOTATION_TYPE           = 6;
    final static int TYPEDECL_TYPE           = 7;
    
    // this string gets appended to redefined names; it's purpose is to be
    // as unlikely as possible to cause collisions.
    public final static String REDEF_IDENTIFIER = "_fn3dktizrknc9pi";
    
    //
    //protected data that can be accessable by any traverser
    // stores <notation> decl
    protected Hashtable fNotationRegistry = new Hashtable();
    
    protected XSDeclarationPool fDeclPool = null;
   
    /**
     * <p>Security manager in effect.</p>
     * 
     * <p>Protected to allow access by any traverser.</p>
     */
    protected SecurityManager fSecureProcessing = null;

    
    // These tables correspond to the symbol spaces defined in the
    // spec.
    // They are keyed with a QName (that is, String("URI,localpart) and
    // their values are nodes corresponding to the given name's decl.
    // By asking the node for its ownerDocument and looking in
    // XSDocumentInfoRegistry we can easily get the corresponding
    // XSDocumentInfo object.
    private Hashtable fUnparsedAttributeRegistry = new Hashtable();
    private Hashtable fUnparsedAttributeGroupRegistry = new Hashtable();
    private Hashtable fUnparsedElementRegistry = new Hashtable();
    private Hashtable fUnparsedGroupRegistry = new Hashtable();
    private Hashtable fUnparsedIdentityConstraintRegistry = new Hashtable();
    private Hashtable fUnparsedNotationRegistry = new Hashtable();
    private Hashtable fUnparsedTypeRegistry = new Hashtable();
    // Compensation for the above hashtables to locate XSDocumentInfo, 
    // Since we may take Schema Element directly, so can not get the
    // corresponding XSDocumentInfo object just using above hashtables.
    private Hashtable fUnparsedAttributeRegistrySub = new Hashtable();
    private Hashtable fUnparsedAttributeGroupRegistrySub = new Hashtable();
    private Hashtable fUnparsedElementRegistrySub = new Hashtable();
    private Hashtable fUnparsedGroupRegistrySub = new Hashtable();
    private Hashtable fUnparsedIdentityConstraintRegistrySub = new Hashtable();
    private Hashtable fUnparsedNotationRegistrySub = new Hashtable();
    private Hashtable fUnparsedTypeRegistrySub = new Hashtable();
    
    // this is keyed with a documentNode (or the schemaRoot nodes
    // contained in the XSDocumentInfo objects) and its value is the
    // XSDocumentInfo object corresponding to that document.
    // Basically, the function of this registry is to be a link
    // between the nodes we fetch from calls to the fUnparsed*
    // arrays and the XSDocumentInfos they live in.
    private Hashtable fXSDocumentInfoRegistry = new Hashtable();
    
    // this hashtable is keyed on by XSDocumentInfo objects.  Its values
    // are Vectors containing the XSDocumentInfo objects <include>d,
    // <import>ed or <redefine>d by the key XSDocumentInfo.
    private Hashtable fDependencyMap = new Hashtable();
    
    // this hashtable is keyed on by a target namespace.  Its values
    // are Vectors containing namespaces imported by schema documents
    // with the key target namespace.
    // if an imprted schema has absent namespace, the value "null" is stored.
    private Hashtable fImportMap = new Hashtable();
    // all namespaces that imports other namespaces
    // if the importing schema has absent namespace, empty string is stored.
    // (because the key of a hashtable can't be null.)
    private Vector fAllTNSs = new Vector();
    // stores instance document mappings between namespaces and schema hints
    private Hashtable fLocationPairs = null;
    
    //this hashtable is keyded on by DOM node objects. 
    //The table stores the hidden nodes
    private Hashtable fHiddenNodes = null;
    
    // convenience methods
    private String null2EmptyString(String ns) {