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1
17 package org.apache.excalibur.xml.impl;
18
19 import java.io.IOException  ;
20
21 import org.apache.avalon.framework.activity.Initializable;
22 import org.apache.avalon.framework.logger.AbstractLogEnabled;
23 import org.apache.avalon.framework.thread.ThreadSafe;
24 import org.apache.xerces.dom.DocumentImpl;
25 import org.apache.xerces.parsers.DOMParser;
26 import org.apache.xerces.parsers.SAXParser;
27 import org.w3c.dom.Document ;
28 import org.xml.sax.ContentHandler ;
29 import org.xml.sax.ErrorHandler ;
30 import org.xml.sax.InputSource ;
31 import org.xml.sax.SAXException ;
32 import org.xml.sax.SAXParseException ;
33 import org.xml.sax.ext.LexicalHandler ;
34
35
39 public final class XercesParser
40 extends AbstractLogEnabled
41 implements org.apache.excalibur.xml.sax.SAXParser, org.apache.excalibur.xml.dom.DOMParser,
42 ErrorHandler , ThreadSafe, Initializable
43 {
44 public void initialize()
45 throws Exception
46 {
47 final String message =
48 "WARNING: XercesParser has been deprecated in favour of " +
49 "JaxpParser. Please use JaxpParser unless it is incompatible" +
50 "with your environment";
51 getLogger().warn( message );
52 }
53
54 public void parse( final InputSource in,
55 final ContentHandler consumer )
56 throws SAXException , IOException
57 {
58 if( consumer instanceof LexicalHandler )
59 {
60 parse( in, consumer, (LexicalHandler )consumer );
61 }
62 else
63 {
64 parse( in, consumer, null );
65 }
66 }
67
68
73 public void parse( final InputSource in,
74 final ContentHandler contentHandler,
75 final LexicalHandler lexicalHandler )
76 throws SAXException , IOException
77 {
78 final SAXParser parser = createSAXParser();
79
80 if( null != lexicalHandler )
81 {
82 parser.setProperty( "http://xml.org/sax/properties/lexical-handler",
83 lexicalHandler );
84 }
85 parser.setErrorHandler( this );
86 parser.setContentHandler( contentHandler );
87 parser.parse( in );
88 }
89
90
93 public Document parseDocument( final InputSource input )
94 throws SAXException , IOException
95 {
96 try
97 {
98 final DOMParser parser = new DOMParser();
99 parser.setFeature( "http://xml.org/sax/features/validation", false );
100 parser.setFeature( "http://xml.org/sax/features/namespaces", true );
101 parser.setFeature( "http://xml.org/sax/features/namespace-prefixes",
102 true );
103
104 parser.parse( input );
105
106 return parser.getDocument();
107 }
108 catch( final Exception e )
109 {
110 final String message = "Could not build DocumentBuilder";
111 getLogger().error( message, e );
112 return null;
113 }
114 }
115
116
119 public Document createDocument()
120 throws SAXException
121 {
122 return new DocumentImpl();
123 }
124
125
128 public void error( final SAXParseException spe )
129 throws SAXException
130 {
131 final String message =
132 "Error parsing " + spe.getSystemId() + " (line " +
133 spe.getLineNumber() + " col. " + spe.getColumnNumber() +
134 "): " + spe.getMessage();
135 throw new SAXException ( message, spe );
136 }
137
138
141 public void fatalError( final SAXParseException spe )
142 throws SAXException
143 {
144 final String message =
145 "Fatal error parsing " + spe.getSystemId() + " (line " +
146 spe.getLineNumber() + " col. " + spe.getColumnNumber() +
147 "): " + spe.getMessage();
148 throw new SAXException ( message, spe );
149 }
150
151
154 public void warning( final SAXParseException spe )
155 throws SAXException
156 {
157 final String message =
158 "Warning parsing " + spe.getSystemId() + " (line " +
159 spe.getLineNumber() + " col. " + spe.getColumnNumber() +
160 "): " + spe.getMessage();
161 throw new SAXException ( message, spe );
162 }
163
164
170 private SAXParser createSAXParser()
171 throws SAXException
172 {
173 final SAXParser parser = new SAXParser();
174 parser.setFeature( "http://xml.org/sax/features/validation", false );
175 parser.setFeature( "http://xml.org/sax/features/namespaces", true );
176 parser.setFeature( "http://xml.org/sax/features/namespace-prefixes",
177 true );
178 return parser;
179 }
180 }
181 |
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