src/share/jaxws_classes/com/sun/tools/internal/xjc/reader/xmlschema/parser/SchemaConstraintChecker.java

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1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.internal.xjc.reader.xmlschema.parser;
27
28 import java.io.File;
29 import java.io.IOException;
30
31 import javax.xml.transform.Source;
32 import javax.xml.transform.sax.SAXSource;
33 import javax.xml.validation.SchemaFactory;
34
35 import com.sun.tools.internal.xjc.ConsoleErrorReporter;
36 import com.sun.tools.internal.xjc.ErrorReceiver;
37 import com.sun.tools.internal.xjc.util.ErrorReceiverFilter;
38
39 import com.sun.xml.internal.bind.v2.util.XmlFactory;
40 import org.w3c.dom.ls.LSInput;
41 import org.w3c.dom.ls.LSResourceResolver;
42 import org.xml.sax.EntityResolver;
43 import org.xml.sax.InputSource;
44 import org.xml.sax.SAXException;
45
46 import static javax.xml.XMLConstants.W3C_XML_SCHEMA_NS_URI;
47
48 /**
49 * Checks XML Schema XML representation constraints and
50 * schema component constraints by using JAXP 1.3 validation framework.
51 * <p/>
52 *
53 * @author Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
54 * @author Ryan Shoemaker (ryan.shoemaker@sun.com)
55 */
56 public class SchemaConstraintChecker {
57
58 /**
59 * @param schemas Schema files to be checked.
60 * @param errorHandler detected errors will be reported to this handler.
61 * @return true if there was no error, false if there were errors.
62 */
63 public static boolean check(InputSource[] schemas,
64 ErrorReceiver errorHandler,
65 final EntityResolver entityResolver,
66 boolean disableXmlSecurity) {
67
68 ErrorReceiverFilter errorFilter = new ErrorReceiverFilter(errorHandler);
69 boolean hadErrors = false;
70
71 SchemaFactory sf = XmlFactory.createSchemaFactory(W3C_XML_SCHEMA_NS_URI, disableXmlSecurity);
72 XmlFactory.allowExternalAccess(sf, "all", disableXmlSecurity);
73 sf.setErrorHandler(errorFilter);
74 if( entityResolver != null ) {
75 sf.setResourceResolver(new LSResourceResolver() {
76 public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
77 try {
78 // XSOM passes the namespace URI to the publicID parameter.
79 // we do the same here .
80 InputSource is = entityResolver.resolveEntity(namespaceURI, systemId);
81 if(is==null) return null;
82 return new LSInputSAXWrapper(is);
83 } catch (SAXException e) {
84 // TODO: is this sufficient?
85 return null;
86 } catch (IOException e) {
87 // TODO: is this sufficient?
88 return null;
89 }
90 }
91 });
92 }
93
94 try {
95 XmlFactory.allowExternalDTDAccess(sf, "all", disableXmlSecurity);
96 sf.newSchema(getSchemaSource(schemas, entityResolver));
97 } catch (SAXException e) {
98 // TODO: we haven't thrown exceptions from here before. should we just trap them and return false?
99 hadErrors = true;
100 } catch( OutOfMemoryError e) {
101 errorHandler.warning(null,Messages.format(Messages.WARN_UNABLE_TO_CHECK_CORRECTNESS));
102 }
103
104 return !(hadErrors || errorFilter.hadError());
105 }
106
107 /**
108 * convert an array of {@link InputSource InputSource} into an
109 * array of {@link Source Source}
110 *
111 * @param schemas array of {@link InputSource InputSource}
112 * @return array of {@link Source Source}
113 */
114 private static Source[] getSchemaSource(InputSource[] schemas, EntityResolver entityResolver) throws SAXException {
115 SAXSource[] sources = new SAXSource[schemas.length];
116 for (int i = 0; i < schemas.length; i++) {
117 sources[i] = new SAXSource(schemas[i]);
118 // sources[i].getXMLReader().setEntityResolver(entityResolver);
119 }
120 return sources;
121 }
122
123 // quick test
124 public static void main(String[] args) throws IOException {
125 InputSource[] sources = new InputSource[args.length];
126 for (int i = 0; i < args.length; i++)
127 sources[i] = new InputSource(new File(args[i]).toURL().toExternalForm());
128
129 check(sources, new ConsoleErrorReporter(), null, true);
130 }
131 }

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