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comparison NGSrich_0.5.5/src/org/jdom/adapters/XML4JDOMAdapter.java @ 0:89ad0a9cca52 default tip

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author pfrommolt
date Mon, 21 Nov 2011 08:12:19 -0500
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1 /*--
2
3 $Id: XML4JDOMAdapter.java,v 1.18 2007/11/10 05:28:59 jhunter Exp $
4
5 Copyright (C) 2000-2007 Jason Hunter & Brett McLaughlin.
6 All rights reserved.
7
8 Redistribution and use in source and binary forms, with or without
9 modification, are permitted provided that the following conditions
10 are met:
11
12 1. Redistributions of source code must retain the above copyright
13 notice, this list of conditions, and the following disclaimer.
14
15 2. Redistributions in binary form must reproduce the above copyright
16 notice, this list of conditions, and the disclaimer that follows
17 these conditions in the documentation and/or other materials
18 provided with the distribution.
19
20 3. The name "JDOM" must not be used to endorse or promote products
21 derived from this software without prior written permission. For
22 written permission, please contact <request_AT_jdom_DOT_org>.
23
24 4. Products derived from this software may not be called "JDOM", nor
25 may "JDOM" appear in their name, without prior written permission
26 from the JDOM Project Management <request_AT_jdom_DOT_org>.
27
28 In addition, we request (but do not require) that you include in the
29 end-user documentation provided with the redistribution and/or in the
30 software itself an acknowledgement equivalent to the following:
31 "This product includes software developed by the
32 JDOM Project (http://www.jdom.org/)."
33 Alternatively, the acknowledgment may be graphical using the logos
34 available at http://www.jdom.org/images/logos.
35
36 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39 DISCLAIMED. IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
40 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43 USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46 OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 SUCH DAMAGE.
48
49 This software consists of voluntary contributions made by many
50 individuals on behalf of the JDOM Project and was originally
51 created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
52 Brett McLaughlin <brett_AT_jdom_DOT_org>. For more information
53 on the JDOM Project, please see <http://www.jdom.org/>.
54
55 */
56
57 package org.jdom.adapters;
58
59 import java.io.*;
60 import java.lang.reflect.*;
61
62 import org.jdom.*;
63 import org.jdom.input.*;
64 import org.w3c.dom.Document;
65 import org.xml.sax.*;
66
67 /**
68 * An adapter for the IBM XML4J DOM parser.
69 *
70 * @version $Revision: 1.18 $, $Date: 2007/11/10 05:28:59 $
71 * @author Brett McLaughlin
72 * @author Jason Hunter
73 */
74 public class XML4JDOMAdapter extends AbstractDOMAdapter {
75
76 private static final String CVS_ID =
77 "@(#) $RCSfile: XML4JDOMAdapter.java,v $ $Revision: 1.18 $ $Date: 2007/11/10 05:28:59 $ $Name: jdom_1_1_1 $";
78
79 /**
80 * This creates a new <code>{@link Document}</code> from an
81 * existing <code>InputStream</code> by letting a DOM
82 * parser handle parsing using the supplied stream.
83 *
84 * @param in <code>InputStream</code> to parse.
85 * @param validate <code>boolean</code> to indicate if validation should occur.
86 * @return <code>Document</code> - instance ready for use.
87 * @throws IOException when I/O error occurs.
88 * @throws JDOMException when errors occur in parsing.
89 */
90 public Document getDocument(InputStream in, boolean validate)
91 throws IOException, JDOMException {
92
93 try {
94 /*
95 * IBM XML4J actually uses the Xerces parser, so this is
96 * all Xerces specific code.
97 */
98
99 // Load the parser class
100 Class parserClass = Class.forName("org.apache.xerces.parsers.DOMParser");
101 Object parser = parserClass.newInstance();
102
103 // Set validation
104 Method setFeature =
105 parserClass.getMethod("setFeature",
106 new Class[] {java.lang.String.class,
107 boolean.class});
108 setFeature.invoke(parser, new Object[] {"http://xml.org/sax/features/validation",
109 new Boolean(validate)});
110
111 // Set namespaces
112 setFeature.invoke(parser, new Object[] {"http://xml.org/sax/features/namespaces",
113 new Boolean(false)});
114
115 // Set the error handler
116 if (validate) {
117 Method setErrorHandler =
118 parserClass.getMethod("setErrorHandler",
119 new Class[] {ErrorHandler.class});
120 setErrorHandler.invoke(parser, new Object[] {new BuilderErrorHandler()});
121 }
122
123 // Parse the document
124 Method parse =
125 parserClass.getMethod("parse",
126 new Class[] {org.xml.sax.InputSource.class});
127 parse.invoke(parser, new Object[]{new InputSource(in)});
128
129 // Get the Document object
130 Method getDocument = parserClass.getMethod("getDocument", null);
131 Document doc = (Document)getDocument.invoke(parser, null);
132
133 return doc;
134 } catch (InvocationTargetException e) {
135 Throwable targetException = e.getTargetException();
136 if (targetException instanceof org.xml.sax.SAXParseException) {
137 SAXParseException parseException = (SAXParseException)targetException;
138 throw new JDOMException("Error on line " + parseException.getLineNumber() +
139 " of XML document: " + parseException.getMessage(), parseException);
140 } else if (targetException instanceof IOException) {
141 IOException ioException = (IOException) targetException;
142 throw ioException;
143 } else {
144 throw new JDOMException(targetException.getMessage(), targetException);
145 }
146 } catch (Exception e) {
147 throw new JDOMException(e.getClass().getName() + ": " +
148 e.getMessage(), e);
149 }
150 }
151
152 /**
153 * This creates an empty <code>Document</code> object based
154 * on a specific parser implementation.
155 *
156 * @return <code>Document</code> - created DOM Document.
157 * @throws JDOMException when errors occur.
158 */
159 public Document createDocument() throws JDOMException {
160 try {
161 return
162 (Document)Class.forName(
163 "org.apache.xerces.dom.DocumentImpl")
164 .newInstance();
165
166 } catch (Exception e) {
167 throw new JDOMException(e.getClass().getName() + ": " +
168 e.getMessage() + " while creating document", e);
169 }
170 }
171 }