Source Code Cross Referenced for XMLReaderAdapter.java in  » Web-Server » Rimfaxe-Web-Server » org » xml » sax » helpers » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Web Server » Rimfaxe Web Server » org.xml.sax.helpers 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // XMLReaderAdapter.java - adapt an SAX2 XMLReader to a SAX1 Parser
002:        // http://www.saxproject.org
003:        // Written by David Megginson
004:        // NO WARRANTY!  This class is in the public domain.
005:        // $Id: XMLReaderAdapter.java,v 1.7 2002/02/01 20:06:20 db Exp $
006:
007:        package org.xml.sax.helpers;
008:
009:        import java.io.IOException;
010:        import java.util.Locale;
011:
012:        import org.xml.sax.Parser; // deprecated
013:        import org.xml.sax.Locator;
014:        import org.xml.sax.InputSource;
015:        import org.xml.sax.AttributeList; // deprecated
016:        import org.xml.sax.EntityResolver;
017:        import org.xml.sax.DTDHandler;
018:        import org.xml.sax.DocumentHandler; // deprecated
019:        import org.xml.sax.ErrorHandler;
020:        import org.xml.sax.SAXException;
021:
022:        import org.xml.sax.XMLReader;
023:        import org.xml.sax.Attributes;
024:        import org.xml.sax.ContentHandler;
025:        import org.xml.sax.SAXNotSupportedException;
026:
027:        /**
028:         * Adapt a SAX2 XMLReader as a SAX1 Parser.
029:         *
030:         * <blockquote>
031:         * <em>This module, both source code and documentation, is in the
032:         * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
033:         * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
034:         * for further information.
035:         * </blockquote>
036:         *
037:         * <p>This class wraps a SAX2 {@link org.xml.sax.XMLReader XMLReader}
038:         * and makes it act as a SAX1 {@link org.xml.sax.Parser Parser}.  The XMLReader 
039:         * must support a true value for the 
040:         * http://xml.org/sax/features/namespace-prefixes property or parsing will fail
041:         * with a {@link org.xml.sax.SAXException SAXException}; if the XMLReader 
042:         * supports a false value for the http://xml.org/sax/features/namespaces 
043:         * property, that will also be used to improve efficiency.</p>
044:         *
045:         * @since SAX 2.0
046:         * @author David Megginson
047:         * @version 2.0.1 (sax2r2)
048:         * @see org.xml.sax.Parser
049:         * @see org.xml.sax.XMLReader
050:         */
051:        public class XMLReaderAdapter implements  Parser, ContentHandler {
052:
053:            ////////////////////////////////////////////////////////////////////
054:            // Constructor.
055:            ////////////////////////////////////////////////////////////////////
056:
057:            /**
058:             * Create a new adapter.
059:             *
060:             * <p>Use the "org.xml.sax.driver" property to locate the SAX2
061:             * driver to embed.</p>
062:             *
063:             * @exception org.xml.sax.SAXException If the embedded driver
064:             *            cannot be instantiated or if the
065:             *            org.xml.sax.driver property is not specified.
066:             */
067:            public XMLReaderAdapter() throws SAXException {
068:                setup(XMLReaderFactory.createXMLReader());
069:            }
070:
071:            /**
072:             * Create a new adapter.
073:             *
074:             * <p>Create a new adapter, wrapped around a SAX2 XMLReader.
075:             * The adapter will make the XMLReader act like a SAX1
076:             * Parser.</p>
077:             *
078:             * @param xmlReader The SAX2 XMLReader to wrap.
079:             * @exception java.lang.NullPointerException If the argument is null.
080:             */
081:            public XMLReaderAdapter(XMLReader xmlReader) {
082:                setup(xmlReader);
083:            }
084:
085:            /**
086:             * Internal setup.
087:             *
088:             * @param xmlReader The embedded XMLReader.
089:             */
090:            private void setup(XMLReader xmlReader) {
091:                if (xmlReader == null) {
092:                    throw new NullPointerException("XMLReader must not be null");
093:                }
094:                this .xmlReader = xmlReader;
095:                qAtts = new AttributesAdapter();
096:            }
097:
098:            ////////////////////////////////////////////////////////////////////
099:            // Implementation of org.xml.sax.Parser.
100:            ////////////////////////////////////////////////////////////////////
101:
102:            /**
103:             * Set the locale for error reporting.
104:             *
105:             * <p>This is not supported in SAX2, and will always throw
106:             * an exception.</p>
107:             *
108:             * @param The locale for error reporting.
109:             * @see org.xml.sax.Parser#setLocale
110:             * @exception org.xml.sax.SAXException Thrown unless overridden.
111:             */
112:            public void setLocale(Locale locale) throws SAXException {
113:                throw new SAXNotSupportedException("setLocale not supported");
114:            }
115:
116:            /**
117:             * Register the entity resolver.
118:             *
119:             * @param resolver The new resolver.
120:             * @see org.xml.sax.Parser#setEntityResolver
121:             */
122:            public void setEntityResolver(EntityResolver resolver) {
123:                xmlReader.setEntityResolver(resolver);
124:            }
125:
126:            /**
127:             * Register the DTD event handler.
128:             *
129:             * @param handler The new DTD event handler.
130:             * @see org.xml.sax.Parser#setDTDHandler
131:             */
132:            public void setDTDHandler(DTDHandler handler) {
133:                xmlReader.setDTDHandler(handler);
134:            }
135:
136:            /**
137:             * Register the SAX1 document event handler.
138:             *
139:             * <p>Note that the SAX1 document handler has no Namespace
140:             * support.</p>
141:             *
142:             * @param handler The new SAX1 document event handler.
143:             * @see org.xml.sax.Parser#setDocumentHandler
144:             */
145:            public void setDocumentHandler(DocumentHandler handler) {
146:                documentHandler = handler;
147:            }
148:
149:            /**
150:             * Register the error event handler.
151:             *
152:             * @param handler The new error event handler.
153:             * @see org.xml.sax.Parser#setErrorHandler
154:             */
155:            public void setErrorHandler(ErrorHandler handler) {
156:                xmlReader.setErrorHandler(handler);
157:            }
158:
159:            /**
160:             * Parse the document.
161:             *
162:             * <p>This method will throw an exception if the embedded
163:             * XMLReader does not support the 
164:             * http://xml.org/sax/features/namespace-prefixes property.</p>
165:             *
166:             * @param systemId The absolute URL of the document.
167:             * @exception java.io.IOException If there is a problem reading
168:             *            the raw content of the document.
169:             * @exception org.xml.sax.SAXException If there is a problem
170:             *            processing the document.
171:             * @see #parse(org.xml.sax.InputSource)
172:             * @see org.xml.sax.Parser#parse(java.lang.String)
173:             */
174:            public void parse(String systemId) throws IOException, SAXException {
175:                parse(new InputSource(systemId));
176:            }
177:
178:            /**
179:             * Parse the document.
180:             *
181:             * <p>This method will throw an exception if the embedded
182:             * XMLReader does not support the 
183:             * http://xml.org/sax/features/namespace-prefixes property.</p>
184:             *
185:             * @param input An input source for the document.
186:             * @exception java.io.IOException If there is a problem reading
187:             *            the raw content of the document.
188:             * @exception org.xml.sax.SAXException If there is a problem
189:             *            processing the document.
190:             * @see #parse(java.lang.String)
191:             * @see org.xml.sax.Parser#parse(org.xml.sax.InputSource)
192:             */
193:            public void parse(InputSource input) throws IOException,
194:                    SAXException {
195:                setupXMLReader();
196:                xmlReader.parse(input);
197:            }
198:
199:            /**
200:             * Set up the XML reader.
201:             */
202:            private void setupXMLReader() throws SAXException {
203:                xmlReader.setFeature(
204:                        "http://xml.org/sax/features/namespace-prefixes", true);
205:                try {
206:                    xmlReader.setFeature(
207:                            "http://xml.org/sax/features/namespaces", false);
208:                } catch (SAXException e) {
209:                    // NO OP: it's just extra information, and we can ignore it
210:                }
211:                xmlReader.setContentHandler(this );
212:            }
213:
214:            ////////////////////////////////////////////////////////////////////
215:            // Implementation of org.xml.sax.ContentHandler.
216:            ////////////////////////////////////////////////////////////////////
217:
218:            /**
219:             * Set a document locator.
220:             *
221:             * @param locator The document locator.
222:             * @see org.xml.sax.ContentHandler#setDocumentLocator
223:             */
224:            public void setDocumentLocator(Locator locator) {
225:                if (documentHandler != null)
226:                    documentHandler.setDocumentLocator(locator);
227:            }
228:
229:            /**
230:             * Start document event.
231:             *
232:             * @exception org.xml.sax.SAXException The client may raise a
233:             *            processing exception.
234:             * @see org.xml.sax.ContentHandler#startDocument
235:             */
236:            public void startDocument() throws SAXException {
237:                if (documentHandler != null)
238:                    documentHandler.startDocument();
239:            }
240:
241:            /**
242:             * End document event.
243:             *
244:             * @exception org.xml.sax.SAXException The client may raise a
245:             *            processing exception.
246:             * @see org.xml.sax.ContentHandler#endDocument
247:             */
248:            public void endDocument() throws SAXException {
249:                if (documentHandler != null)
250:                    documentHandler.endDocument();
251:            }
252:
253:            /**
254:             * Adapt a SAX2 start prefix mapping event.
255:             *
256:             * @param prefix The prefix being mapped.
257:             * @param uri The Namespace URI being mapped to.
258:             * @see org.xml.sax.ContentHandler#startPrefixMapping
259:             */
260:            public void startPrefixMapping(String prefix, String uri) {
261:            }
262:
263:            /**
264:             * Adapt a SAX2 end prefix mapping event.
265:             *
266:             * @param prefix The prefix being mapped.
267:             * @see org.xml.sax.ContentHandler#endPrefixMapping
268:             */
269:            public void endPrefixMapping(String prefix) {
270:            }
271:
272:            /**
273:             * Adapt a SAX2 start element event.
274:             *
275:             * @param uri The Namespace URI.
276:             * @param localName The Namespace local name.
277:             * @param qName The qualified (prefixed) name.
278:             * @param atts The SAX2 attributes.
279:             * @exception org.xml.sax.SAXException The client may raise a
280:             *            processing exception.
281:             * @see org.xml.sax.ContentHandler#endDocument
282:             */
283:            public void startElement(String uri, String localName,
284:                    String qName, Attributes atts) throws SAXException {
285:                if (documentHandler != null) {
286:                    qAtts.setAttributes(atts);
287:                    documentHandler.startElement(qName, qAtts);
288:                }
289:            }
290:
291:            /**
292:             * Adapt a SAX2 end element event.
293:             *
294:             * @param uri The Namespace URI.
295:             * @param localName The Namespace local name.
296:             * @param qName The qualified (prefixed) name.
297:             * @exception org.xml.sax.SAXException The client may raise a
298:             *            processing exception.
299:             * @see org.xml.sax.ContentHandler#endElement
300:             */
301:            public void endElement(String uri, String localName, String qName)
302:                    throws SAXException {
303:                if (documentHandler != null)
304:                    documentHandler.endElement(qName);
305:            }
306:
307:            /**
308:             * Adapt a SAX2 characters event.
309:             *
310:             * @param ch An array of characters.
311:             * @param start The starting position in the array.
312:             * @param length The number of characters to use.
313:             * @exception org.xml.sax.SAXException The client may raise a
314:             *            processing exception.
315:             * @see org.xml.sax.ContentHandler#characters
316:             */
317:            public void characters(char ch[], int start, int length)
318:                    throws SAXException {
319:                if (documentHandler != null)
320:                    documentHandler.characters(ch, start, length);
321:            }
322:
323:            /**
324:             * Adapt a SAX2 ignorable whitespace event.
325:             *
326:             * @param ch An array of characters.
327:             * @param start The starting position in the array.
328:             * @param length The number of characters to use.
329:             * @exception org.xml.sax.SAXException The client may raise a
330:             *            processing exception.
331:             * @see org.xml.sax.ContentHandler#ignorableWhitespace
332:             */
333:            public void ignorableWhitespace(char ch[], int start, int length)
334:                    throws SAXException {
335:                if (documentHandler != null)
336:                    documentHandler.ignorableWhitespace(ch, start, length);
337:            }
338:
339:            /**
340:             * Adapt a SAX2 processing instruction event.
341:             *
342:             * @param target The processing instruction target.
343:             * @param data The remainder of the processing instruction
344:             * @exception org.xml.sax.SAXException The client may raise a
345:             *            processing exception.
346:             * @see org.xml.sax.ContentHandler#processingInstruction
347:             */
348:            public void processingInstruction(String target, String data)
349:                    throws SAXException {
350:                if (documentHandler != null)
351:                    documentHandler.processingInstruction(target, data);
352:            }
353:
354:            /**
355:             * Adapt a SAX2 skipped entity event.
356:             *
357:             * @param name The name of the skipped entity.
358:             * @see org.xml.sax.ContentHandler#skippedEntity
359:             * @exception org.xml.sax.SAXException Throwable by subclasses.
360:             */
361:            public void skippedEntity(String name) throws SAXException {
362:            }
363:
364:            ////////////////////////////////////////////////////////////////////
365:            // Internal state.
366:            ////////////////////////////////////////////////////////////////////
367:
368:            XMLReader xmlReader;
369:            DocumentHandler documentHandler;
370:            AttributesAdapter qAtts;
371:
372:            ////////////////////////////////////////////////////////////////////
373:            // Internal class.
374:            ////////////////////////////////////////////////////////////////////
375:
376:            /**
377:             * Internal class to wrap a SAX2 Attributes object for SAX1.
378:             */
379:            final class AttributesAdapter implements  AttributeList {
380:                AttributesAdapter() {
381:                }
382:
383:                /**
384:                 * Set the embedded Attributes object.
385:                 *
386:                 * @param The embedded SAX2 Attributes.
387:                 */
388:                void setAttributes(Attributes attributes) {
389:                    this .attributes = attributes;
390:                }
391:
392:                /**
393:                 * Return the number of attributes.
394:                 *
395:                 * @return The length of the attribute list.
396:                 * @see org.xml.sax.AttributeList#getLength
397:                 */
398:                public int getLength() {
399:                    return attributes.getLength();
400:                }
401:
402:                /**
403:                 * Return the qualified (prefixed) name of an attribute by position.
404:                 *
405:                 * @return The qualified name.
406:                 * @see org.xml.sax.AttributeList#getName
407:                 */
408:                public String getName(int i) {
409:                    return attributes.getQName(i);
410:                }
411:
412:                /**
413:                 * Return the type of an attribute by position.
414:                 *
415:                 * @return The type.
416:                 * @see org.xml.sax.AttributeList#getType(int)
417:                 */
418:                public String getType(int i) {
419:                    return attributes.getType(i);
420:                }
421:
422:                /**
423:                 * Return the value of an attribute by position.
424:                 *
425:                 * @return The value.
426:                 * @see org.xml.sax.AttributeList#getValue(int)
427:                 */
428:                public String getValue(int i) {
429:                    return attributes.getValue(i);
430:                }
431:
432:                /**
433:                 * Return the type of an attribute by qualified (prefixed) name.
434:                 *
435:                 * @return The type.
436:                 * @see org.xml.sax.AttributeList#getType(java.lang.String)
437:                 */
438:                public String getType(String qName) {
439:                    return attributes.getType(qName);
440:                }
441:
442:                /**
443:                 * Return the value of an attribute by qualified (prefixed) name.
444:                 *
445:                 * @return The value.
446:                 * @see org.xml.sax.AttributeList#getValue(java.lang.String)
447:                 */
448:                public String getValue(String qName) {
449:                    return attributes.getValue(qName);
450:                }
451:
452:                private Attributes attributes;
453:            }
454:
455:        }
456:
457:        // end of XMLReaderAdapter.java
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.