org.apache.xerces.jaxp.DocumentBuilderImpl Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of xercesImpl Show documentation
Show all versions of xercesImpl Show documentation
Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family.
This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building
parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is
the reference implementation of XNI but other parser components, configurations, and parsers can be written
using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual.
Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema
1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema
Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for
evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation
of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete
implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML
Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that
it does not yet provide an option to enable normalization checking as described in section 2.13 of this
specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly
serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.
/*
* 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 org.apache.xerces.jaxp;
import java.io.IOException;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.validation.Schema;
import org.apache.xerces.dom.DOMImplementationImpl;
import org.apache.xerces.dom.DOMMessageFormatter;
import org.apache.xerces.impl.Constants;
import org.apache.xerces.impl.validation.ValidationManager;
import org.apache.xerces.impl.xs.XMLSchemaValidator;
import org.apache.xerces.jaxp.validation.XSGrammarPoolContainer;
import org.apache.xerces.parsers.DOMParser;
import org.apache.xerces.util.SecurityManager;
import org.apache.xerces.xni.XMLDocumentHandler;
import org.apache.xerces.xni.parser.XMLComponent;
import org.apache.xerces.xni.parser.XMLComponentManager;
import org.apache.xerces.xni.parser.XMLConfigurationException;
import org.apache.xerces.xni.parser.XMLDocumentSource;
import org.apache.xerces.xni.parser.XMLParserConfiguration;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
/**
* @author Rajiv Mordani
* @author Edwin Goei
* @version $Id: DocumentBuilderImpl.java 704573 2008-10-14 16:11:22Z mrglavas $
*/
public class DocumentBuilderImpl extends DocumentBuilder
implements JAXPConstants
{
/** Feature identifier: namespaces. */
private static final String NAMESPACES_FEATURE =
Constants.SAX_FEATURE_PREFIX + Constants.NAMESPACES_FEATURE;
/** Feature identifier: include ignorable white space. */
private static final String INCLUDE_IGNORABLE_WHITESPACE =
Constants.XERCES_FEATURE_PREFIX + Constants.INCLUDE_IGNORABLE_WHITESPACE;
/** Feature identifier: create entiry ref nodes feature. */
private static final String CREATE_ENTITY_REF_NODES_FEATURE =
Constants.XERCES_FEATURE_PREFIX + Constants.CREATE_ENTITY_REF_NODES_FEATURE;
/** Feature identifier: include comments feature. */
private static final String INCLUDE_COMMENTS_FEATURE =
Constants.XERCES_FEATURE_PREFIX + Constants.INCLUDE_COMMENTS_FEATURE;
/** Feature identifier: create cdata nodes feature. */
private static final String CREATE_CDATA_NODES_FEATURE =
Constants.XERCES_FEATURE_PREFIX + Constants.CREATE_CDATA_NODES_FEATURE;
/** Feature identifier: XInclude processing */
private static final String XINCLUDE_FEATURE =
Constants.XERCES_FEATURE_PREFIX + Constants.XINCLUDE_FEATURE;
/** feature identifier: XML Schema validation */
private static final String XMLSCHEMA_VALIDATION_FEATURE =
Constants.XERCES_FEATURE_PREFIX + Constants.SCHEMA_VALIDATION_FEATURE;
/** Feature identifier: validation */
private static final String VALIDATION_FEATURE =
Constants.SAX_FEATURE_PREFIX + Constants.VALIDATION_FEATURE;
/** Property identifier: security manager. */
private static final String SECURITY_MANAGER =
Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;
private final DOMParser domParser;
private final Schema grammar;
private final XMLComponent fSchemaValidator;
private final XMLComponentManager fSchemaValidatorComponentManager;
private final ValidationManager fSchemaValidationManager;
private final UnparsedEntityHandler fUnparsedEntityHandler;
/** Initial ErrorHandler */
private final ErrorHandler fInitErrorHandler;
/** Initial EntityResolver */
private final EntityResolver fInitEntityResolver;
DocumentBuilderImpl(DocumentBuilderFactoryImpl dbf, Hashtable dbfAttrs, Hashtable features)
throws SAXNotRecognizedException, SAXNotSupportedException {
this(dbf, dbfAttrs, features, false);
}
DocumentBuilderImpl(DocumentBuilderFactoryImpl dbf, Hashtable dbfAttrs, Hashtable features, boolean secureProcessing)
throws SAXNotRecognizedException, SAXNotSupportedException
{
domParser = new DOMParser();
// If validating, provide a default ErrorHandler that prints
// validation errors with a warning telling the user to set an
// ErrorHandler
if (dbf.isValidating()) {
fInitErrorHandler = new DefaultValidationErrorHandler();
setErrorHandler(fInitErrorHandler);
}
else {
fInitErrorHandler = domParser.getErrorHandler();
}
domParser.setFeature(VALIDATION_FEATURE, dbf.isValidating());
// "namespaceAware" == SAX Namespaces feature
domParser.setFeature(NAMESPACES_FEATURE, dbf.isNamespaceAware());
// Set various parameters obtained from DocumentBuilderFactory
domParser.setFeature(INCLUDE_IGNORABLE_WHITESPACE,
!dbf.isIgnoringElementContentWhitespace());
domParser.setFeature(CREATE_ENTITY_REF_NODES_FEATURE,
!dbf.isExpandEntityReferences());
domParser.setFeature(INCLUDE_COMMENTS_FEATURE,
!dbf.isIgnoringComments());
domParser.setFeature(CREATE_CDATA_NODES_FEATURE,
!dbf.isCoalescing());
// Avoid setting the XInclude processing feature if the value is false.
// This will keep the configuration from throwing an exception if it
// does not support XInclude.
if (dbf.isXIncludeAware()) {
domParser.setFeature(XINCLUDE_FEATURE, true);
}
// If the secure processing feature is on set a security manager.
if (secureProcessing) {
domParser.setProperty(SECURITY_MANAGER, new SecurityManager());
}
this.grammar = dbf.getSchema();
if (grammar != null) {
XMLParserConfiguration config = domParser.getXMLParserConfiguration();
XMLComponent validatorComponent = null;
/** For Xerces grammars, use built-in schema validator. **/
if (grammar instanceof XSGrammarPoolContainer) {
validatorComponent = new XMLSchemaValidator();
fSchemaValidationManager = new ValidationManager();
fUnparsedEntityHandler = new UnparsedEntityHandler(fSchemaValidationManager);
config.setDTDHandler(fUnparsedEntityHandler);
fUnparsedEntityHandler.setDTDHandler(domParser);
domParser.setDTDSource(fUnparsedEntityHandler);
fSchemaValidatorComponentManager = new SchemaValidatorConfiguration(config,
(XSGrammarPoolContainer) grammar, fSchemaValidationManager);
}
/** For third party grammars, use the JAXP validator component. **/
else {
validatorComponent = new JAXPValidatorComponent(grammar.newValidatorHandler());
fSchemaValidationManager = null;
fUnparsedEntityHandler = null;
fSchemaValidatorComponentManager = config;
}
config.addRecognizedFeatures(validatorComponent.getRecognizedFeatures());
config.addRecognizedProperties(validatorComponent.getRecognizedProperties());
config.setDocumentHandler((XMLDocumentHandler) validatorComponent);
((XMLDocumentSource)validatorComponent).setDocumentHandler(domParser);
domParser.setDocumentSource((XMLDocumentSource) validatorComponent);
fSchemaValidator = validatorComponent;
}
else {
fSchemaValidationManager = null;
fUnparsedEntityHandler = null;
fSchemaValidatorComponentManager = null;
fSchemaValidator = null;
}
// Set features
setFeatures(features);
// Set attributes
setDocumentBuilderFactoryAttributes(dbfAttrs);
// Initial EntityResolver
fInitEntityResolver = domParser.getEntityResolver();
}
private void setFeatures(Hashtable features)
throws SAXNotSupportedException, SAXNotRecognizedException {
if (features != null) {
Iterator entries = features.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
String feature = (String) entry.getKey();
boolean value = ((Boolean) entry.getValue()).booleanValue();
domParser.setFeature(feature, value);
}
}
}
/**
* Set any DocumentBuilderFactory attributes of our underlying DOMParser
*
* Note: code does not handle possible conflicts between DOMParser
* attribute names and JAXP specific attribute names,
* eg. DocumentBuilderFactory.setValidating()
*/
private void setDocumentBuilderFactoryAttributes(Hashtable dbfAttrs)
throws SAXNotSupportedException, SAXNotRecognizedException
{
if (dbfAttrs == null) {
// Nothing to do
return;
}
Iterator entries = dbfAttrs.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
String name = (String) entry.getKey();
Object val = entry.getValue();
if (val instanceof Boolean) {
// Assume feature
domParser.setFeature(name, ((Boolean)val).booleanValue());
} else {
// Assume property
if (JAXP_SCHEMA_LANGUAGE.equals(name)) {
// JAXP 1.2 support
//None of the properties will take effect till the setValidating(true) has been called
if ( W3C_XML_SCHEMA.equals(val) ) {
if( isValidating() ) {
domParser.setFeature(XMLSCHEMA_VALIDATION_FEATURE, true);
// this should allow us not to emit DTD errors, as expected by the
// spec when schema validation is enabled
domParser.setProperty(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
}
}
} else if(JAXP_SCHEMA_SOURCE.equals(name)){
if( isValidating() ) {
String value=(String)dbfAttrs.get(JAXP_SCHEMA_LANGUAGE);
if(value !=null && W3C_XML_SCHEMA.equals(value)){
domParser.setProperty(name, val);
}else{
throw new IllegalArgumentException(
DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN,
"jaxp-order-not-supported",
new Object[] {JAXP_SCHEMA_LANGUAGE, JAXP_SCHEMA_SOURCE}));
}
}
} else {
// Let Xerces code handle the property
domParser.setProperty(name, val);
}
}
}
}
/**
* Non-preferred: use the getDOMImplementation() method instead of this
* one to get a DOM Level 2 DOMImplementation object and then use DOM
* Level 2 methods to create a DOM Document object.
*/
public Document newDocument() {
return new org.apache.xerces.dom.DocumentImpl();
}
public DOMImplementation getDOMImplementation() {
return DOMImplementationImpl.getDOMImplementation();
}
public Document parse(InputSource is) throws SAXException, IOException {
if (is == null) {
throw new IllegalArgumentException(
DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN,
"jaxp-null-input-source", null));
}
if (fSchemaValidator != null) {
if (fSchemaValidationManager != null) {
fSchemaValidationManager.reset();
fUnparsedEntityHandler.reset();
}
resetSchemaValidator();
}
domParser.parse(is);
Document doc = domParser.getDocument();
domParser.dropDocumentReferences();
return doc;
}
public boolean isNamespaceAware() {
try {
return domParser.getFeature(NAMESPACES_FEATURE);
}
catch (SAXException x) {
throw new IllegalStateException(x.getMessage());
}
}
public boolean isValidating() {
try {
return domParser.getFeature(VALIDATION_FEATURE);
}
catch (SAXException x) {
throw new IllegalStateException(x.getMessage());
}
}
/**
* Gets the XInclude processing mode for this parser
* @return the state of XInclude processing mode
*/
public boolean isXIncludeAware() {
try {
return domParser.getFeature(XINCLUDE_FEATURE);
}
catch (SAXException exc) {
return false;
}
}
public void setEntityResolver(EntityResolver er) {
domParser.setEntityResolver(er);
}
public void setErrorHandler(ErrorHandler eh) {
domParser.setErrorHandler(eh);
}
public Schema getSchema() {
return grammar;
}
public void reset() {
/** Restore the initial error handler. **/
if (domParser.getErrorHandler() != fInitErrorHandler) {
domParser.setErrorHandler(fInitErrorHandler);
}
/** Restore the initial entity resolver. **/
if (domParser.getEntityResolver() != fInitEntityResolver) {
domParser.setEntityResolver(fInitEntityResolver);
}
}
// package private
DOMParser getDOMParser() {
return domParser;
}
private void resetSchemaValidator() throws SAXException {
try {
fSchemaValidator.reset(fSchemaValidatorComponentManager);
}
// This should never be thrown from the schema validator.
catch (XMLConfigurationException e) {
throw new SAXException(e);
}
}
}