1 /*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
4 */
5 /*
6 * Copyright 2005 The Apache Software Foundation.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21 package com.sun.org.apache.xerces.internal.jaxp.validation;
22
23 import java.lang.ref.SoftReference;
24 import java.io.IOException;
25
26 import javax.xml.transform.Result;
27 import javax.xml.transform.Source;
28 import javax.xml.transform.sax.SAXTransformerFactory;
29 import javax.xml.transform.sax.TransformerHandler;
30 import javax.xml.transform.stream.StreamSource;
31 import javax.xml.transform.stream.StreamResult;
32 import javax.xml.transform.TransformerConfigurationException;
33 import javax.xml.transform.TransformerFactory;
34 import javax.xml.transform.TransformerFactoryConfigurationError;
35 import javax.xml.XMLConstants;
36
37 import com.sun.org.apache.xerces.internal.impl.Constants;
38 import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
39 import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
40 import com.sun.org.apache.xerces.internal.parsers.XML11Configuration;
41 import com.sun.org.apache.xerces.internal.xni.XNIException;
42 import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;
43 import com.sun.org.apache.xerces.internal.xni.parser.XMLParseException;
44 import com.sun.org.apache.xerces.internal.xni.parser.XMLParserConfiguration;
45 import org.xml.sax.SAXException;
46
47 /**
48 * <p>A validator helper for <code>StreamSource</code>s.</p>
49 *
50 * @author Michael Glavassevich, IBM
51 * @author <a href="mailto:Sunitha.Reddy@Sun.com">Sunitha Reddy</a>
52 * @version $Id: StreamValidatorHelper.java,v 1.7 2010-11-01 04:40:08 joehw Exp $
53 */
54 final class StreamValidatorHelper implements ValidatorHelper {
55
56 // feature identifiers
57
58 /** Feature identifier: parser settings. */
59 private static final String PARSER_SETTINGS =
60 Constants.XERCES_FEATURE_PREFIX + Constants.PARSER_SETTINGS;
61
62 // property identifiers
63
64 /** Property identifier: entity resolver. */
65 private static final String ENTITY_RESOLVER =
66 Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_RESOLVER_PROPERTY;
67
68 /** Property identifier: error handler. */
69 private static final String ERROR_HANDLER =
70 Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_HANDLER_PROPERTY;
71
72 /** Property identifier: error reporter. */
73 private static final String ERROR_REPORTER =
74 Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
75
76 /** Property identifier: XML Schema validator. */
77 private static final String SCHEMA_VALIDATOR =
78 Constants.XERCES_PROPERTY_PREFIX + Constants.SCHEMA_VALIDATOR_PROPERTY;
79
80 /** Property identifier: symbol table. */
81 private static final String SYMBOL_TABLE =
82 Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;
83
84 /** Property identifier: validation manager. */
85 private static final String VALIDATION_MANAGER =
86 Constants.XERCES_PROPERTY_PREFIX + Constants.VALIDATION_MANAGER_PROPERTY;
87
88 private static final String DEFAULT_TRANSFORMER_IMPL = "com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl";
89 //
90 // Data
91 //
92
93 /** SoftReference to parser configuration. **/
94 private SoftReference fConfiguration = new SoftReference(null);
95
96 /** Schema validator. **/
97 private com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator fSchemaValidator;
98
99 /** Component manager. **/
100 private XMLSchemaValidatorComponentManager fComponentManager;
101
102 private ValidatorHandlerImpl handler = null;
103
104 public StreamValidatorHelper(XMLSchemaValidatorComponentManager componentManager) {
105 fComponentManager = componentManager;
106 fSchemaValidator = (com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator) fComponentManager.getProperty(SCHEMA_VALIDATOR);
107 }
108
109 public void validate(Source source, Result result)
110 throws SAXException, IOException {
111 if (result == null || result instanceof StreamResult) {
112 final StreamSource streamSource = (StreamSource) source;
113 TransformerHandler identityTransformerHandler ;
114
115 if( result!=null ) {
116 try {
117 SAXTransformerFactory tf = fComponentManager.getFeature(Constants.ORACLE_FEATURE_SERVICE_MECHANISM) ?
118 (SAXTransformerFactory)SAXTransformerFactory.newInstance()
119 : (SAXTransformerFactory) TransformerFactory.newInstance(DEFAULT_TRANSFORMER_IMPL, StreamValidatorHelper.class.getClassLoader());
120 identityTransformerHandler = tf.newTransformerHandler();
121 } catch (TransformerConfigurationException e) {
122 throw new TransformerFactoryConfigurationError(e);
123 }
124
125 handler = new ValidatorHandlerImpl(fComponentManager);
126 handler.setContentHandler(identityTransformerHandler);
127 identityTransformerHandler.setResult(result);
128 }
129
130 XMLInputSource input = new XMLInputSource(streamSource.getPublicId(), streamSource.getSystemId(), null);
131 input.setByteStream(streamSource.getInputStream());
132 input.setCharacterStream(streamSource.getReader());
133
134 // Gets the parser configuration. We'll create and initialize a new one, if we
135 // haven't created one before or if the previous one was garbage collected.
136 XMLParserConfiguration config = (XMLParserConfiguration) fConfiguration.get();
137 if (config == null) {
138 config = initialize();
139 }
140 // If settings have changed on the component manager, refresh the error handler and entity resolver.
141 else if (fComponentManager.getFeature(PARSER_SETTINGS)) {
142 config.setProperty(ENTITY_RESOLVER, fComponentManager.getProperty(ENTITY_RESOLVER));
143 config.setProperty(ERROR_HANDLER, fComponentManager.getProperty(ERROR_HANDLER));
144 }
145
146 // prepare for parse
147 fComponentManager.reset();
148 fSchemaValidator.setDocumentHandler(handler);
149
150 try {
151 config.parse(input);
152 }
153 catch (XMLParseException e) {
154 throw Util.toSAXParseException(e);
155 }
156 catch (XNIException e) {
157 throw Util.toSAXException(e);
158 }
159 return;
160 }
161 throw new IllegalArgumentException(JAXPValidationMessageFormatter.formatMessage(fComponentManager.getLocale(),
162 "SourceResultMismatch",
163 new Object [] {source.getClass().getName(), result.getClass().getName()}));
164 }
165
166 private XMLParserConfiguration initialize() {
167 XML11Configuration config = new XML11Configuration();
168 config.setProperty(ENTITY_RESOLVER, fComponentManager.getProperty(ENTITY_RESOLVER));
169 config.setProperty(ERROR_HANDLER, fComponentManager.getProperty(ERROR_HANDLER));
170 XMLErrorReporter errorReporter = (XMLErrorReporter) fComponentManager.getProperty(ERROR_REPORTER);
171 config.setProperty(ERROR_REPORTER, errorReporter);
172 // add message formatters
173 if (errorReporter.getMessageFormatter(XMLMessageFormatter.XML_DOMAIN) == null) {
174 XMLMessageFormatter xmft = new XMLMessageFormatter();
175 errorReporter.putMessageFormatter(XMLMessageFormatter.XML_DOMAIN, xmft);
176 errorReporter.putMessageFormatter(XMLMessageFormatter.XMLNS_DOMAIN, xmft);
177 }
178 config.setProperty(SYMBOL_TABLE, fComponentManager.getProperty(SYMBOL_TABLE));
179 config.setProperty(VALIDATION_MANAGER, fComponentManager.getProperty(VALIDATION_MANAGER));
180 config.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD,
181 fComponentManager.getProperty(XMLConstants.ACCESS_EXTERNAL_DTD));
182 config.setDocumentHandler(fSchemaValidator);
183 config.setDTDHandler(null);
184 config.setDTDContentModelHandler(null);
185 fConfiguration = new SoftReference(config);
186 return config;
187 }
188
189 } // StreamValidatorHelper