KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > dom > wrappers > DOMParser


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 1999, 2000 The Apache Software Foundation. All rights
6  * 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 following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Xerces" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
31  *
32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
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 APACHE SOFTWARE FOUNDATION OR
40  * ITS 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  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 1999, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */
57
58 package dom.wrappers;
59
60 import org.w3c.dom.Document JavaDoc;
61 import org.xml.sax.ErrorHandler JavaDoc;
62 import org.xml.sax.SAXException JavaDoc;
63 import org.xml.sax.SAXNotRecognizedException JavaDoc;
64 import org.xml.sax.SAXNotSupportedException JavaDoc;
65 import org.xml.sax.SAXParseException JavaDoc;
66
67 import dom.DOMParserWrapper;
68
69 /**
70  * Wraps the Xerces DOM parser and extends NonValidatingDOMParser
71  *
72  * @version $id$
73  */
74 public class DOMParser
75     implements DOMParserWrapper, ErrorHandler JavaDoc {
76
77     //
78 // Data
79 //
80
81
82
83     /** Parser. */
84     org.enhydra.apache.xerces.parsers.DOMParser parser =
85         new org.enhydra.apache.xerces.parsers.DOMParser();
86
87     //
88 // Constructors
89 //
90
91     /** Default constructor. */
92     public DOMParser() {
93         try {
94             parser.setFeature( "http://xml.org/sax/features/validation", true);
95
96         } catch (SAXException JavaDoc e) {
97             System.out.println("error in setting up parser feature");
98         }
99
100         parser.setErrorHandler(this);
101
102     }
103
104     //
105 // DOMParserWrapper methods
106 //
107
108     /** Parses the specified URI and returns the document. */
109     public Document JavaDoc parse(String JavaDoc uri) throws Exception JavaDoc {
110         parser.parse(uri);
111         return parser.getDocument();
112
113     } // parse(String):Document
114
115
116     public void setFeature(String JavaDoc featureId, boolean state)
117             throws SAXNotRecognizedException JavaDoc, SAXNotSupportedException JavaDoc {
118             parser.setFeature( featureId, state );
119     }
120
121
122    
123     //
124 // ErrorHandler methods
125 //
126
127     /** Warning. */
128     public void warning(SAXParseException JavaDoc ex) {
129         System.err.println("[Warning] "+
130                            getLocationString(ex)+": "+
131                            ex.getMessage());
132     }
133
134     /** Error. */
135     public void error(SAXParseException JavaDoc ex) {
136         System.err.println("[Error] "+
137                            getLocationString(ex)+": "+
138                            ex.getMessage());
139     }
140
141     /** Fatal error. */
142     public void fatalError(SAXParseException JavaDoc ex) throws SAXException JavaDoc {
143         System.err.println("[Fatal Error] "+
144                            getLocationString(ex)+": "+
145                            ex.getMessage());
146         throw ex;
147     }
148
149     //
150 // Private methods
151 //
152
153     /** Returns a string of the location. */
154     private String JavaDoc getLocationString(SAXParseException JavaDoc ex) {
155         StringBuffer JavaDoc str = new StringBuffer JavaDoc();
156
157         String JavaDoc systemId = ex.getSystemId();
158         if (systemId != null) {
159             int index = systemId.lastIndexOf('/');
160             if (index != -1)
161                 systemId = systemId.substring(index + 1);
162             str.append(systemId);
163         }
164         str.append(':');
165         str.append(ex.getLineNumber());
166         str.append(':');
167         str.append(ex.getColumnNumber());
168
169         return str.toString();
170
171     } // getLocationString(SAXParseException):String
172
173 } // class DOMParser
174
Popular Tags