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1
7 package org.jboss.xml.binding.parser.sax;
8
9 import org.jboss.xml.binding.parser.JBossXBParser;
10 import org.jboss.xml.binding.Unmarshaller;
11 import org.jboss.xml.binding.JBossXBException;
12 import org.jboss.util.xml.JBossEntityResolver;
13 import org.jboss.logging.Logger;
14 import org.xml.sax.XMLReader  ;
15 import org.xml.sax.ErrorHandler ;
16 import org.xml.sax.SAXParseException ;
17 import org.xml.sax.SAXException ;
18 import org.xml.sax.Locator ;
19 import org.xml.sax.Attributes ;
20 import org.xml.sax.InputSource ;
21 import org.xml.sax.EntityResolver ;
22
23 import javax.xml.parsers.SAXParserFactory ;
24 import javax.xml.parsers.SAXParser ;
25 import java.io.Reader ;
26 import java.io.InputStream ;
27
28
32 public class SaxJBossXBParser
33 implements JBossXBParser
34 {
35 private static final Logger log = Logger.getLogger(SaxJBossXBParser.class);
36
37 private final SAXParser parser;
38 private JBossXBParser.ContentHandler contentHandler;
39
40 public SaxJBossXBParser()
41 throws JBossXBException
42 {
43 SAXParserFactory saxFactory = SAXParserFactory.newInstance();
44 saxFactory.setValidating(true);
45 saxFactory.setNamespaceAware(true);
46
47 try
48 {
49 parser = saxFactory.newSAXParser();
50 }
51 catch(Exception e)
52 {
53 throw new JBossXBException("Failed to create a new SAX parser", e);
54 }
55
56 XMLReader reader = null;
57 try
58 {
59 reader = parser.getXMLReader();
60 }
61 catch(SAXException e)
62 {
63 throw new JBossXBException("Failed to get parser's XMLReader", e);
64 }
65
66 reader.setContentHandler(new DelegatingContentHandler());
67 reader.setErrorHandler(new MetaDataErrorHandler());
68 reader.setEntityResolver(new JBossEntityResolver());
69
70 setFeature(Unmarshaller.VALIDATION, true);
71 setFeature(Unmarshaller.SCHEMA_VALIDATION, true);
72 setFeature(Unmarshaller.SCHEMA_FULL_CHECKING, true);
73 setFeature(Unmarshaller.DYNAMIC_VALIDATION, true);
74 setFeature(Unmarshaller.NAMESPACES, true);
75 }
76
77
79 public void setEntityResolver(EntityResolver entityResolver)
80 throws JBossXBException
81 {
82 try
83 {
84 parser.getXMLReader().setEntityResolver(entityResolver);
85 }
86 catch(SAXException e)
87 {
88 throw new JBossXBException("Failed to set EntityResolver", e);
89 }
90 }
91
92 public void setProperty(String name, Object value) throws JBossXBException
93 {
94 try
95 {
96 parser.getXMLReader().setProperty(name, value);
97 }
98 catch(SAXException e)
99 {
100 throw new JBossXBException("Failed to get parser's XMLReader", e);
101 }
102 }
103
104 public void setFeature(String name, boolean value) throws JBossXBException
105 {
106 try
107 {
108 parser.getXMLReader().setFeature(name, value);
109 }
110 catch(SAXException e)
111 {
112 throw new JBossXBException("Failed to get parser's XMLReader", e);
113 }
114 }
115
116 public void parse(String systemId, ContentHandler handler) throws JBossXBException
117 {
118 this.contentHandler = handler;
119 try
120 {
121 parser.getXMLReader().parse(systemId);
122 }
123 catch(Exception e)
124 {
125 throw new JBossXBException("Failed to parse source.", e);
126 }
127 }
128
129 public void parse(InputStream is, ContentHandler handler) throws JBossXBException
130 {
131 this.contentHandler = handler;
132 try
133 {
134 parser.getXMLReader().parse(new InputSource (is));
135 }
136 catch(Exception e)
137 {
138 throw new JBossXBException("Failed to parse source.", e);
139 }
140 }
141
142 public void parse(Reader reader, ContentHandler handler) throws JBossXBException
143 {
144 this.contentHandler = handler;
145 try
146 {
147 parser.getXMLReader().parse(new InputSource (reader));
148 }
149 catch(Exception e)
150 {
151 throw new JBossXBException("Failed to parse source.", e);
152 }
153 }
154
155
157 private final class DelegatingContentHandler
158 implements org.xml.sax.ContentHandler
159 {
160 public void endDocument()
161 {
162 }
163
164 public void startDocument()
165 {
166 }
167
168 public void characters(char ch[], int start, int length)
169 {
170 int i = start;
173 while(i < start + length)
174 {
175 if(!Character.isWhitespace(ch[i++]))
176 {
177 contentHandler.characters(ch, start, length);
178 break;
179 }
180 }
181 }
182
183 public void ignorableWhitespace(char ch[], int start, int length)
184 {
185 }
186
187 public void endPrefixMapping(String prefix)
188 {
189 contentHandler.endPrefixMapping(prefix);
190 }
191
192 public void skippedEntity(String name)
193 {
194 }
195
196 public void setDocumentLocator(Locator locator)
197 {
198 }
199
200 public void processingInstruction(String target, String data)
201 {
202 }
203
204 public void startPrefixMapping(String prefix, String uri)
205 {
206 contentHandler.startPrefixMapping(prefix, uri);
207 }
208
209 public void endElement(String namespaceURI, String localName, String qName)
210 {
211 contentHandler.endElement(namespaceURI, localName, qName);
212 }
213
214 public void startElement(String namespaceURI, String localName, String qName, Attributes atts)
215 {
216 contentHandler.startElement(namespaceURI, localName, qName, atts, null);
217 }
218 }
219
220 private static final class MetaDataErrorHandler
221 implements ErrorHandler
222 {
223 public void warning(SAXParseException exception)
224 {
225 log.warn(formatMessage(exception));
226 }
227
228 public void error(SAXParseException exception)
229 throws SAXException
230 {
231 throw new SAXException (formatMessage(exception));
232 }
233
234 public void fatalError(SAXParseException exception)
235 throws SAXException
236 {
237 throw new SAXException (formatMessage(exception));
238 }
239
240 public String formatMessage(SAXParseException exception)
241 {
242 StringBuffer buffer = new StringBuffer (50);
243 buffer.append(exception.getMessage()).append(" @ ");
244 String location = exception.getPublicId();
245 if(location != null)
246 {
247 buffer.append(location);
248 }
249 else
250 {
251 location = exception.getSystemId();
252 if(location != null)
253 {
254 buffer.append(location);
255 }
256 else
257 {
258 buffer.append("*unknown*");
259 }
260 }
261 buffer.append('[');
262 buffer.append(exception.getLineNumber()).append(',');
263 buffer.append(exception.getColumnNumber()).append(']');
264 return buffer.toString();
265 }
266 }
267 }
268 |
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