Source Code Cross Referenced for XMLDOMWriterImpl.java in  » 6.0-JDK-Modules-com.sun » xml » com » sun » xml » internal » stream » writers » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules com.sun » xml » com.sun.xml.internal.stream.writers 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004:         *
005:         * This code is free software; you can redistribute it and/or modify it
006:         * under the terms of the GNU General Public License version 2 only, as
007:         * published by the Free Software Foundation.  Sun designates this
008:         * particular file as subject to the "Classpath" exception as provided
009:         * by Sun in the LICENSE file that accompanied this code.
010:         *
011:         * This code is distributed in the hope that it will be useful, but WITHOUT
012:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014:         * version 2 for more details (a copy is included in the LICENSE file that
015:         * accompanied this code).
016:         *
017:         * You should have received a copy of the GNU General Public License version
018:         * 2 along with this work; if not, write to the Free Software Foundation,
019:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020:         *
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022:         * CA 95054 USA or visit www.sun.com if you need additional information or
023:         * have any questions.
024:         */
025:
026:        package com.sun.xml.internal.stream.writers;
027:
028:        import java.lang.reflect.InvocationTargetException;
029:        import java.lang.reflect.Method;
030:        import javax.xml.XMLConstants;
031:        import javax.xml.namespace.NamespaceContext;
032:        import javax.xml.stream.XMLStreamException;
033:        import javax.xml.stream.XMLStreamWriter;
034:        import javax.xml.transform.dom.DOMResult;
035:        import org.w3c.dom.Attr;
036:        import org.w3c.dom.CDATASection;
037:        import org.w3c.dom.Comment;
038:        import org.w3c.dom.Document;
039:        import org.w3c.dom.Element;
040:        import org.w3c.dom.EntityReference;
041:        import org.w3c.dom.Node;
042:        import org.w3c.dom.ProcessingInstruction;
043:        import org.w3c.dom.Text;
044:        import org.xml.sax.helpers.NamespaceSupport;
045:
046:        /**
047:         * This class provides support to build a DOM tree using XMLStreamWriter API's.
048:         * @author K.Venugopal@sun.com
049:         */
050:
051:        /*
052:         * TODO : -Venu
053:         * Internal NamespaceManagement
054:         * setPrefix
055:         * support for isRepairNamespace property.
056:         * Some Unsupported Methods.
057:         * Change StringBuffer to StringBuilder, when JDK 1.5 will be minimum requirement for SJSXP.
058:         */
059:
060:        public class XMLDOMWriterImpl implements  XMLStreamWriter {
061:
062:            private Document ownerDoc = null;
063:            private Node currentNode = null;
064:            private Node node = null;
065:            private NamespaceSupport namespaceContext = null;
066:            private Method mXmlVersion = null;
067:            private boolean[] needContextPop = null;
068:            private StringBuffer stringBuffer = null;
069:            private int resizeValue = 20;
070:            private int depth = 0;
071:
072:            /**
073:             * Creates a new instance of XMLDOMwriterImpl
074:             * @param result DOMResult object @javax.xml.transform.dom.DOMResult
075:             */
076:            public XMLDOMWriterImpl(DOMResult result) {
077:
078:                node = result.getNode();
079:                if (node.getNodeType() == Node.DOCUMENT_NODE) {
080:                    ownerDoc = (Document) node;
081:                    currentNode = ownerDoc;
082:                } else {
083:                    ownerDoc = node.getOwnerDocument();
084:                    currentNode = node;
085:                }
086:                getDLThreeMethods();
087:                stringBuffer = new StringBuffer();
088:                needContextPop = new boolean[resizeValue];
089:                namespaceContext = new NamespaceSupport();
090:            }
091:
092:            private void getDLThreeMethods() {
093:                try {
094:                    mXmlVersion = ownerDoc.getClass().getMethod(
095:                            "setXmlVersion", new Class[] { String.class });
096:                } catch (NoSuchMethodException mex) {
097:                    //log these errors at fine level.
098:                    mXmlVersion = null;
099:                } catch (SecurityException se) {
100:                    //log these errors at fine level.
101:                    mXmlVersion = null;
102:                }
103:            }
104:
105:            /**
106:             * This method has no effect when called.
107:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
108:             */
109:            public void close() throws XMLStreamException {
110:                //no-op
111:            }
112:
113:            /**
114:             * This method has no effect when called.
115:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
116:             */
117:            public void flush() throws XMLStreamException {
118:                //no-op
119:            }
120:
121:            /**
122:             * {@inheritDoc}
123:             * @return {@inheritDoc}
124:             */
125:            public javax.xml.namespace.NamespaceContext getNamespaceContext() {
126:                return null;
127:            }
128:
129:            /**
130:             * {@inheritDoc}
131:             * @param namespaceURI {@inheritDoc}
132:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
133:             * @return {@inheritDoc}
134:             */
135:            public String getPrefix(String namespaceURI)
136:                    throws XMLStreamException {
137:                String prefix = null;
138:                if (this .namespaceContext != null) {
139:                    prefix = namespaceContext.getPrefix(namespaceURI);
140:                }
141:                return prefix;
142:            }
143:
144:            /**
145:             * Is not supported in this implementation.
146:             * @param str {@inheritDoc}
147:             * @throws java.lang.IllegalArgumentException {@inheritDoc}
148:             * @return {@inheritDoc}
149:             */
150:            public Object getProperty(String str)
151:                    throws IllegalArgumentException {
152:                throw new UnsupportedOperationException();
153:            }
154:
155:            /**
156:             * Is not supported in this version of the implementation.
157:             * @param uri {@inheritDoc}
158:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
159:             */
160:            public void setDefaultNamespace(String uri)
161:                    throws XMLStreamException {
162:                namespaceContext.declarePrefix(XMLConstants.DEFAULT_NS_PREFIX,
163:                        uri);
164:                if (!needContextPop[depth]) {
165:                    needContextPop[depth] = true;
166:                }
167:            }
168:
169:            /**
170:             * {@inheritDoc}
171:             * @param namespaceContext {@inheritDoc}
172:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
173:             */
174:            public void setNamespaceContext(
175:                    javax.xml.namespace.NamespaceContext namespaceContext)
176:                    throws XMLStreamException {
177:                throw new UnsupportedOperationException();
178:            }
179:
180:            /**
181:             * Is not supported in this version of the implementation.
182:             * @param prefix {@inheritDoc}
183:             * @param uri {@inheritDoc}
184:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
185:             */
186:            public void setPrefix(String prefix, String uri)
187:                    throws XMLStreamException {
188:                if (prefix == null) {
189:                    throw new XMLStreamException("Prefix cannot be null");
190:                }
191:                namespaceContext.declarePrefix(prefix, uri);
192:                if (!needContextPop[depth]) {
193:                    needContextPop[depth] = true;
194:                }
195:            }
196:
197:            /**
198:             * Creates a DOM Atrribute @see org.w3c.dom.Node and associates it with the current DOM element @see org.w3c.dom.Node.
199:             * @param localName {@inheritDoc}
200:             * @param value {@inheritDoc}
201:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
202:             */
203:            public void writeAttribute(String localName, String value)
204:                    throws XMLStreamException {
205:
206:                if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
207:                    Attr attr = ownerDoc.createAttribute(localName);
208:                    attr.setValue(value);
209:                    ((Element) currentNode).setAttributeNode(attr);
210:                } else {
211:                    //Convert node type to String
212:                    throw new IllegalStateException(
213:                            "Current DOM Node type  is "
214:                                    + currentNode.getNodeType()
215:                                    + "and does not allow attributes to be set ");
216:                }
217:            }
218:
219:            /**
220:             * Creates a DOM Atrribute @see org.w3c.dom.Node and associates it with the current DOM element @see org.w3c.dom.Node.
221:             * @param namespaceURI {@inheritDoc}
222:             * @param localName {@inheritDoc}
223:             * @param value {@inheritDoc}
224:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
225:             */
226:            public void writeAttribute(String namespaceURI, String localName,
227:                    String value) throws XMLStreamException {
228:                if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
229:                    String prefix = null;
230:                    if (namespaceURI == null) {
231:                        throw new XMLStreamException(
232:                                "NamespaceURI cannot be null");
233:                    }
234:                    if (localName == null) {
235:                        throw new XMLStreamException(
236:                                "Local name cannot be null");
237:                    }
238:                    if (namespaceContext != null) {
239:                        prefix = namespaceContext.getPrefix(namespaceURI);
240:                    }
241:
242:                    if (prefix == null) {
243:                        throw new XMLStreamException("Namespace URI "
244:                                + namespaceURI + "is not bound to any prefix");
245:                    }
246:
247:                    String qualifiedName = null;
248:                    if (prefix.equals("")) {
249:                        qualifiedName = localName;
250:                    } else {
251:                        qualifiedName = getQName(prefix, localName);
252:                    }
253:                    Attr attr = ownerDoc.createAttributeNS(namespaceURI,
254:                            qualifiedName);
255:                    attr.setValue(value);
256:                    ((Element) currentNode).setAttributeNode(attr);
257:                } else {
258:                    //Convert node type to String
259:                    throw new IllegalStateException(
260:                            "Current DOM Node type  is "
261:                                    + currentNode.getNodeType()
262:                                    + "and does not allow attributes to be set ");
263:                }
264:            }
265:
266:            /**
267:             * Creates a DOM Atrribute @see org.w3c.dom.Node and associates it with the current DOM element @see org.w3c.dom.Node.
268:             * @param prefix {@inheritDoc}
269:             * @param namespaceURI {@inheritDoc}
270:             * @param localName {@inheritDoc}
271:             * @param value {@inheritDoc}
272:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
273:             */
274:            public void writeAttribute(String prefix, String namespaceURI,
275:                    String localName, String value) throws XMLStreamException {
276:                if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
277:                    if (namespaceURI == null) {
278:                        throw new XMLStreamException(
279:                                "NamespaceURI cannot be null");
280:                    }
281:                    if (localName == null) {
282:                        throw new XMLStreamException(
283:                                "Local name cannot be null");
284:                    }
285:                    if (prefix == null) {
286:                        throw new XMLStreamException("prefix cannot be null");
287:                    }
288:                    String qualifiedName = null;
289:                    if (prefix.equals("")) {
290:                        qualifiedName = localName;
291:                    } else {
292:
293:                        qualifiedName = getQName(prefix, localName);
294:                    }
295:                    Attr attr = ownerDoc.createAttributeNS(namespaceURI,
296:                            qualifiedName);
297:                    attr.setValue(value);
298:                    ((Element) currentNode).setAttributeNodeNS(attr);
299:                } else {
300:                    //Convert node type to String
301:                    throw new IllegalStateException(
302:                            "Current DOM Node type  is "
303:                                    + currentNode.getNodeType()
304:                                    + "and does not allow attributes to be set ");
305:                }
306:
307:            }
308:
309:            /**
310:             * Creates a CDATA object @see org.w3c.dom.CDATASection.
311:             * @param data {@inheritDoc}
312:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
313:             */
314:            public void writeCData(String data) throws XMLStreamException {
315:                if (data == null) {
316:                    throw new XMLStreamException("CDATA cannot be null");
317:                }
318:
319:                CDATASection cdata = ownerDoc.createCDATASection(data);
320:                getNode().appendChild(cdata);
321:            }
322:
323:            /**
324:             * Creates a character object @see org.w3c.dom.Text and appends it to the current
325:             * element in the DOM tree.
326:             * @param charData {@inheritDoc}
327:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
328:             */
329:            public void writeCharacters(String charData)
330:                    throws XMLStreamException {
331:                Text text = ownerDoc.createTextNode(charData);
332:                currentNode.appendChild(text);
333:            }
334:
335:            /**
336:             * Creates a character object @see org.w3c.dom.Text and appends it to the current
337:             * element in the DOM tree.
338:             * @param values {@inheritDoc}
339:             * @param param {@inheritDoc}
340:             * @param param2 {@inheritDoc}
341:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
342:             */
343:            public void writeCharacters(char[] values, int param, int param2)
344:                    throws XMLStreamException {
345:
346:                Text text = ownerDoc.createTextNode(new String(values, param,
347:                        param2));
348:                currentNode.appendChild(text);
349:            }
350:
351:            /**
352:             * Creates a Comment object @see org.w3c.dom.Comment and appends it to the current
353:             * element in the DOM tree.
354:             * @param str {@inheritDoc}
355:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
356:             */
357:            public void writeComment(String str) throws XMLStreamException {
358:                Comment comment = ownerDoc.createComment(str);
359:                getNode().appendChild(comment);
360:            }
361:
362:            /**
363:             * This method is not supported in this implementation.
364:             * @param str {@inheritDoc}
365:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
366:             */
367:            public void writeDTD(String str) throws XMLStreamException {
368:                throw new UnsupportedOperationException();
369:            }
370:
371:            /**
372:             * Creates a DOM attribute and adds it to the current element in the DOM tree.
373:             * @param namespaceURI {@inheritDoc}
374:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
375:             */
376:            public void writeDefaultNamespace(String namespaceURI)
377:                    throws XMLStreamException {
378:                if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
379:                    String qname = XMLConstants.XMLNS_ATTRIBUTE;
380:                    ((Element) currentNode).setAttributeNS(
381:                            XMLConstants.XMLNS_ATTRIBUTE_NS_URI, qname,
382:                            namespaceURI);
383:                } else {
384:                    //Convert node type to String
385:                    throw new IllegalStateException(
386:                            "Current DOM Node type  is "
387:                                    + currentNode.getNodeType()
388:                                    + "and does not allow attributes to be set ");
389:                }
390:            }
391:
392:            /**
393:             * creates a DOM Element and appends it to the current element in the tree.
394:             * @param localName {@inheritDoc}
395:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
396:             */
397:            public void writeEmptyElement(String localName)
398:                    throws XMLStreamException {
399:                if (ownerDoc != null) {
400:                    Element element = ownerDoc.createElement(localName);
401:                    if (currentNode != null) {
402:                        currentNode.appendChild(element);
403:                    } else {
404:                        ownerDoc.appendChild(element);
405:                    }
406:                }
407:
408:            }
409:
410:            /**
411:             * creates a DOM Element and appends it to the current element in the tree.
412:             * @param namespaceURI {@inheritDoc}
413:             * @param localName {@inheritDoc}
414:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
415:             */
416:            public void writeEmptyElement(String namespaceURI, String localName)
417:                    throws XMLStreamException {
418:                if (ownerDoc != null) {
419:                    String qualifiedName = null;
420:                    String prefix = null;
421:                    if (namespaceURI == null) {
422:                        throw new XMLStreamException(
423:                                "NamespaceURI cannot be null");
424:                    }
425:                    if (localName == null) {
426:                        throw new XMLStreamException(
427:                                "Local name cannot be null");
428:                    }
429:
430:                    if (namespaceContext != null) {
431:                        prefix = namespaceContext.getPrefix(namespaceURI);
432:                    }
433:                    if (prefix == null) {
434:                        throw new XMLStreamException("Namespace URI "
435:                                + namespaceURI + "is not bound to any prefix");
436:                    }
437:                    if ("".equals(prefix)) {
438:                        qualifiedName = localName;
439:                    } else {
440:
441:                        qualifiedName = getQName(prefix, localName);
442:
443:                    }
444:                    Element element = ownerDoc.createElementNS(namespaceURI,
445:                            qualifiedName);
446:                    if (currentNode != null) {
447:                        currentNode.appendChild(element);
448:                    } else {
449:                        ownerDoc.appendChild(element);
450:                    }
451:                    //currentNode = element;
452:                }
453:            }
454:
455:            /**
456:             * creates a DOM Element and appends it to the current element in the tree.
457:             * @param prefix {@inheritDoc}
458:             * @param localName {@inheritDoc}
459:             * @param namespaceURI {@inheritDoc}
460:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
461:             */
462:            public void writeEmptyElement(String prefix, String localName,
463:                    String namespaceURI) throws XMLStreamException {
464:                if (ownerDoc != null) {
465:                    if (namespaceURI == null) {
466:                        throw new XMLStreamException(
467:                                "NamespaceURI cannot be null");
468:                    }
469:                    if (localName == null) {
470:                        throw new XMLStreamException(
471:                                "Local name cannot be null");
472:                    }
473:                    if (prefix == null) {
474:                        throw new XMLStreamException("Prefix cannot be null");
475:                    }
476:                    String qualifiedName = null;
477:                    if ("".equals(prefix)) {
478:                        qualifiedName = localName;
479:                    } else {
480:                        qualifiedName = getQName(prefix, localName);
481:                    }
482:                    Element el = ownerDoc.createElementNS(namespaceURI,
483:                            qualifiedName);
484:                    if (currentNode != null) {
485:                        currentNode.appendChild(el);
486:                    } else {
487:                        ownerDoc.appendChild(el);
488:                    }
489:
490:                }
491:            }
492:
493:            /**
494:             * Will reset current Node pointer maintained by the implementation.
495:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
496:             */
497:            public void writeEndDocument() throws XMLStreamException {
498:                //What do you want me to do eh! :)
499:                currentNode = null;
500:                for (int i = 0; i < depth; i++) {
501:                    if (needContextPop[depth]) {
502:                        needContextPop[depth] = false;
503:                        namespaceContext.popContext();
504:                    }
505:                    depth--;
506:                }
507:                depth = 0;
508:            }
509:
510:            /**
511:             * Internal current Node pointer will point to the parent of the current Node.
512:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
513:             */
514:            public void writeEndElement() throws XMLStreamException {
515:                Node node = currentNode.getParentNode();
516:                if (currentNode.getNodeType() == Node.DOCUMENT_NODE) {
517:                    currentNode = null;
518:                } else {
519:                    currentNode = node;
520:                }
521:                if (needContextPop[depth]) {
522:                    needContextPop[depth] = false;
523:                    namespaceContext.popContext();
524:                }
525:                depth--;
526:            }
527:
528:            /**
529:             * Is not supported in this implementation.
530:             * @param name {@inheritDoc}
531:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
532:             */
533:            public void writeEntityRef(String name) throws XMLStreamException {
534:                EntityReference er = ownerDoc.createEntityReference(name);
535:                currentNode.appendChild(er);
536:            }
537:
538:            /**
539:             * creates a namespace attribute and will associate it with the current element in
540:             * the DOM tree.
541:             * @param prefix {@inheritDoc}
542:             * @param namespaceURI {@inheritDoc}
543:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
544:             */
545:            public void writeNamespace(String prefix, String namespaceURI)
546:                    throws XMLStreamException {
547:
548:                if (prefix == null) {
549:                    throw new XMLStreamException("prefix cannot be null");
550:                }
551:
552:                if (namespaceURI == null) {
553:                    throw new XMLStreamException("NamespaceURI cannot be null");
554:                }
555:
556:                String qname = null;
557:
558:                if (prefix.equals("")) {
559:                    qname = XMLConstants.XMLNS_ATTRIBUTE;
560:                } else {
561:                    qname = getQName(XMLConstants.XMLNS_ATTRIBUTE, prefix);
562:                }
563:
564:                ((Element) currentNode).setAttributeNS(
565:                        XMLConstants.XMLNS_ATTRIBUTE_NS_URI, qname,
566:                        namespaceURI);
567:            }
568:
569:            /**
570:             * is not supported in this release.
571:             * @param target {@inheritDoc}
572:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
573:             */
574:            public void writeProcessingInstruction(String target)
575:                    throws XMLStreamException {
576:                if (target == null) {
577:                    throw new XMLStreamException("Target cannot be null");
578:                }
579:                ProcessingInstruction pi = ownerDoc
580:                        .createProcessingInstruction(target, "");
581:                currentNode.appendChild(pi);
582:            }
583:
584:            /**
585:             * is not supported in this release.
586:             * @param target {@inheritDoc}
587:             * @param data {@inheritDoc}
588:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
589:             */
590:            public void writeProcessingInstruction(String target, String data)
591:                    throws XMLStreamException {
592:                if (target == null) {
593:                    throw new XMLStreamException("Target cannot be null");
594:                }
595:                ProcessingInstruction pi = ownerDoc
596:                        .createProcessingInstruction(target, data);
597:                currentNode.appendChild(pi);
598:            }
599:
600:            /**
601:             * will set version on the Document object when the DOM Node passed to this implementation
602:             * supports DOM Level3 API's.
603:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
604:             */
605:            public void writeStartDocument() throws XMLStreamException {
606:                try {
607:                    if (mXmlVersion != null) {
608:                        mXmlVersion.invoke(ownerDoc, new Object[] { "1.0" });
609:                    }
610:                } catch (IllegalAccessException iae) {
611:                    throw new XMLStreamException(iae);
612:                } catch (InvocationTargetException ite) {
613:                    throw new XMLStreamException(ite);
614:                }
615:            }
616:
617:            /**
618:             * will set version on the Document object when the DOM Node passed to this implementation
619:             * supports DOM Level3 API's.
620:             * @param version {@inheritDoc}
621:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
622:             */
623:            public void writeStartDocument(String version)
624:                    throws XMLStreamException {
625:                try {
626:                    if (mXmlVersion != null) {
627:                        mXmlVersion.invoke(ownerDoc, new Object[] { version });
628:                    }
629:                } catch (IllegalAccessException iae) {
630:                    throw new XMLStreamException(iae);
631:                } catch (InvocationTargetException ite) {
632:                    throw new XMLStreamException(ite);
633:                }
634:            }
635:
636:            /**
637:             * will set version on the Document object when the DOM Node passed to this implementation
638:             * supports DOM Level3 API's.
639:             * @param encoding {@inheritDoc}
640:             * @param version {@inheritDoc}
641:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
642:             */
643:            public void writeStartDocument(String encoding, String version)
644:                    throws XMLStreamException {
645:                try {
646:                    if (mXmlVersion != null) {
647:                        mXmlVersion.invoke(ownerDoc, new Object[] { version });
648:                    }
649:                } catch (IllegalAccessException iae) {
650:                    throw new XMLStreamException(iae);
651:                } catch (InvocationTargetException ite) {
652:                    throw new XMLStreamException(ite);
653:                }
654:                //TODO: What to do with encoding.-Venu
655:            }
656:
657:            /**
658:             * creates a DOM Element and appends it to the current element in the tree.
659:             * @param localName {@inheritDoc}
660:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
661:             */
662:            public void writeStartElement(String localName)
663:                    throws XMLStreamException {
664:                if (ownerDoc != null) {
665:                    Element element = ownerDoc.createElement(localName);
666:                    if (currentNode != null) {
667:                        currentNode.appendChild(element);
668:                    } else {
669:                        ownerDoc.appendChild(element);
670:                    }
671:                    currentNode = element;
672:                }
673:                if (needContextPop[depth]) {
674:                    namespaceContext.pushContext();
675:                }
676:                depth++;
677:            }
678:
679:            /**
680:             * creates a DOM Element and appends it to the current element in the tree.
681:             * @param namespaceURI {@inheritDoc}
682:             * @param localName {@inheritDoc}
683:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
684:             */
685:            public void writeStartElement(String namespaceURI, String localName)
686:                    throws XMLStreamException {
687:                if (ownerDoc != null) {
688:                    String qualifiedName = null;
689:                    String prefix = null;
690:
691:                    if (namespaceURI == null) {
692:                        throw new XMLStreamException(
693:                                "NamespaceURI cannot be null");
694:                    }
695:                    if (localName == null) {
696:                        throw new XMLStreamException(
697:                                "Local name cannot be null");
698:                    }
699:
700:                    if (namespaceContext != null) {
701:                        prefix = namespaceContext.getPrefix(namespaceURI);
702:                    }
703:                    if (prefix == null) {
704:                        throw new XMLStreamException("Namespace URI "
705:                                + namespaceURI + "is not bound to any prefix");
706:                    }
707:                    if ("".equals(prefix)) {
708:                        qualifiedName = localName;
709:                    } else {
710:                        qualifiedName = getQName(prefix, localName);
711:                    }
712:
713:                    Element element = ownerDoc.createElementNS(namespaceURI,
714:                            qualifiedName);
715:
716:                    if (currentNode != null) {
717:                        currentNode.appendChild(element);
718:                    } else {
719:                        ownerDoc.appendChild(element);
720:                    }
721:                    currentNode = element;
722:                }
723:                if (needContextPop[depth]) {
724:                    namespaceContext.pushContext();
725:                }
726:                depth++;
727:            }
728:
729:            /**
730:             * creates a DOM Element and appends it to the current element in the tree.
731:             * @param prefix {@inheritDoc}
732:             * @param localName {@inheritDoc}
733:             * @param namespaceURI {@inheritDoc}
734:             * @throws javax.xml.stream.XMLStreamException {@inheritDoc}
735:             */
736:            public void writeStartElement(String prefix, String localName,
737:                    String namespaceURI) throws XMLStreamException {
738:
739:                if (ownerDoc != null) {
740:                    String qname = null;
741:                    if (namespaceURI == null) {
742:                        throw new XMLStreamException(
743:                                "NamespaceURI cannot be null");
744:                    }
745:                    if (localName == null) {
746:                        throw new XMLStreamException(
747:                                "Local name cannot be null");
748:                    }
749:                    if (prefix == null) {
750:                        throw new XMLStreamException("Prefix cannot be null");
751:                    }
752:
753:                    if (prefix.equals("")) {
754:                        qname = localName;
755:                    } else {
756:                        qname = getQName(prefix, localName);
757:                    }
758:
759:                    Element el = ownerDoc.createElementNS(namespaceURI, qname);
760:
761:                    if (currentNode != null) {
762:                        currentNode.appendChild(el);
763:                    } else {
764:                        ownerDoc.appendChild(el);
765:                    }
766:                    currentNode = el;
767:                    if (needContextPop[depth]) {
768:                        namespaceContext.pushContext();
769:                    }
770:                    depth++;
771:
772:                }
773:            }
774:
775:            private String getQName(String prefix, String localName) {
776:                stringBuffer.setLength(0);
777:                stringBuffer.append(prefix);
778:                stringBuffer.append(":");
779:                stringBuffer.append(localName);
780:                return stringBuffer.toString();
781:            }
782:
783:            private Node getNode() {
784:                if (currentNode == null) {
785:                    return ownerDoc;
786:                } else {
787:                    return currentNode;
788:                }
789:            }
790:        }
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