Source Code Cross Referenced for XMLCollection.java in  » Workflow-Engines » JaWE » org » enhydra » shark » xpdl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » JaWE » org.enhydra.shark.xpdl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.enhydra.shark.xpdl;
002:
003:        import java.util.ArrayList;
004:        import java.util.Iterator;
005:        import java.util.List;
006:
007:        import org.enhydra.shark.utilities.SequencedHashMap;
008:
009:        /**
010:         *  Class that represents collection of elements from XML schema.
011:         *
012:         *  @author Sasa Bojanic
013:         */
014:        public abstract class XMLCollection extends
015:                XMLBaseForCollectionAndComplex {
016:
017:            public XMLCollection(XMLComplexElement parent, boolean isRequired) {
018:                super (parent, isRequired);
019:            }
020:
021:            public XMLCollection(XMLComplexElement parent, String name,
022:                    boolean isRequired) {
023:                super (parent, name, isRequired);
024:            }
025:
026:            public XMLCollection(XMLComplexChoice parent, boolean isRequired) {
027:                super (parent, isRequired);
028:            }
029:
030:            public XMLCollection(XMLComplexChoice parent, String name,
031:                    boolean isRequired) {
032:                super (parent, name, isRequired);
033:            }
034:
035:            public XMLCollection(XMLCollection parent, boolean isRequired) {
036:                super (parent, isRequired);
037:            }
038:
039:            public XMLCollection(XMLCollection parent, String name,
040:                    boolean isRequired) {
041:                super (parent, name, isRequired);
042:            }
043:
044:            public void makeAs(XMLElement el) {
045:                if (!(el != null && el.getClass().equals(this .getClass()) && el
046:                        .toName().equals(this .toName()))) {
047:                    throw new RuntimeException("Can't perform makeAs!");
048:                }
049:                //System.err.println("Performing make as for element "+el.toName()+", pkg="+getMainElement().hashCode()+", mapkg="+el.getMainElement().hashCode()+", notifml="+notifyMainListeners);
050:                SequencedHashMap oldElsMap = new SequencedHashMap();
051:                SequencedHashMap newElsMap = new SequencedHashMap();
052:                Iterator it = toElements().iterator();
053:                while (it.hasNext()) {
054:                    XMLElement o = (XMLElement) it.next();
055:                    oldElsMap.put(o.getOriginalElementHashCode(), o);
056:                }
057:                //System.err.println("OLDELSMAP="+oldElsMap);
058:                it = ((XMLCollection) el).toElements().iterator();
059:                while (it.hasNext()) {
060:                    XMLElement o = (XMLElement) it.next();
061:                    if (!oldElsMap.containsKey(o.getOriginalElementHashCode())) {
062:                        XMLElement temp = generateNewElement();
063:                        //                        XMLElement temp = (XMLElement)o.clone();
064:                        temp.makeAs(o);
065:                        newElsMap.put(temp.getOriginalElementHashCode(), temp);
066:                    } else {
067:                        newElsMap.put(o.getOriginalElementHashCode(), o);
068:                    }
069:                }
070:                //if (this instanceof ExtendedAttributes) System.err.println("NEWSMAP="+oldElsMap);
071:
072:                List toAdd = new ArrayList(newElsMap.keySet());
073:                toAdd.removeAll(oldElsMap.keySet());
074:                //System.err.println("TOADD="+toAdd);
075:                List toRemove = new ArrayList(oldElsMap.keySet());
076:                toRemove.removeAll(newElsMap.keySet());
077:                //System.err.println("TOREM="+toRemove);
078:                List toRetain = new ArrayList(oldElsMap.keySet());
079:                toRetain.retainAll(newElsMap.keySet());
080:                //System.err.println("TORET="+toRetain);
081:                List objectsToRemove = new ArrayList();
082:                it = toRemove.iterator();
083:                while (it.hasNext()) {
084:                    XMLElement elToRemove = (XMLElement) oldElsMap.get(it
085:                            .next());
086:                    objectsToRemove.add(elToRemove);
087:                }
088:                List objectsToAdd = new ArrayList();
089:                it = toAdd.iterator();
090:                while (it.hasNext()) {
091:                    objectsToAdd.add(newElsMap.get(it.next()));
092:                }
093:
094:                it = toRetain.iterator();
095:                while (it.hasNext()) {
096:                    Object next = it.next();
097:                    XMLElement oldEl = (XMLElement) oldElsMap.get(next);
098:                    XMLElement newEl = (XMLElement) newElsMap.get(next);
099:                    oldEl.makeAs(newEl);
100:                }
101:
102:                removeAll(objectsToRemove);
103:                addAll(objectsToAdd);
104:
105:                oldElsMap.clear();
106:                it = toElements().iterator();
107:                while (it.hasNext()) {
108:                    XMLElement o = (XMLElement) it.next();
109:                    oldElsMap.put(o.getOriginalElementHashCode(), o);
110:                }
111:                checkRepositioning(oldElsMap, newElsMap);
112:
113:            }
114:
115:            public void initCaches() {
116:                super .initCaches();
117:                if (elements.size() > 0
118:                        && elements.get(0) instanceof  XMLCollectionElement) {
119:                    elementMap.clear();
120:                    Iterator it = elements.iterator();
121:                    while (it.hasNext()) {
122:                        XMLCollectionElement el = (XMLCollectionElement) it
123:                                .next();
124:                        elementMap.put(el.getId(), el);
125:                    }
126:                }
127:                cachesInitialized = true;
128:            }
129:
130:            public void clearCaches() {
131:                super .clearCaches();
132:                elementMap.clear();
133:            }
134:
135:            /** NOTE: Method signature changed to public. */
136:            public void add(XMLElement el) {
137:                if (isReadOnly) {
138:                    throw new RuntimeException(
139:                            "Can't set the value of read only element!");
140:                }
141:                List changedSubElements = new ArrayList();
142:                changedSubElements.add(el);
143:
144:                elements.add(el);
145:                el.setParent(this );
146:                //      el.originalElementHashCode=null;
147:                el.setNotifyListeners(this .notifyListeners);
148:                el.setNotifyMainListeners(this .notifyMainListeners);
149:
150:                XMLElementChangeInfo info = createInfo(value, value,
151:                        changedSubElements, XMLElementChangeInfo.INSERTED);
152:                if (notifyListeners) {
153:                    notifyListeners(info);
154:                }
155:                if (notifyMainListeners) {
156:                    notifyMainListeners(info);
157:                }
158:            }
159:
160:            /** NOTE: Method signature changed to public. */
161:            public boolean add(int no, XMLElement el) {
162:                if (isReadOnly) {
163:                    throw new RuntimeException(
164:                            "Can't set the value of read only element!");
165:                }
166:                if (no < 0 || no > size())
167:                    throw new RuntimeException("Can't add element to position "
168:                            + no + "!");
169:                List changedSubElements = new ArrayList();
170:                changedSubElements.add(el);
171:
172:                elements.add(el);
173:                el.setParent(this );
174:                //      el.originalElementHashCode=null;
175:                el.setNotifyListeners(this .notifyListeners);
176:                el.setNotifyMainListeners(this .notifyMainListeners);
177:
178:                XMLElementChangeInfo info = createInfo(value, value,
179:                        changedSubElements, XMLElementChangeInfo.INSERTED);
180:                if (notifyListeners) {
181:                    notifyListeners(info);
182:                }
183:                if (notifyMainListeners) {
184:                    notifyMainListeners(info);
185:                }
186:
187:                reposition(el, no);
188:
189:                return true;
190:            }
191:
192:            public boolean addAll(List els) {
193:                if (isReadOnly) {
194:                    throw new RuntimeException(
195:                            "Can't set the value of read only element!");
196:                }
197:                if (els != null && els.size() > 0) {
198:                    Iterator it = els.iterator();
199:                    while (it.hasNext()) {
200:                        XMLElement el = (XMLElement) it.next();
201:                        elements.add(el);
202:                        el.setParent(this );
203:                        //            el.originalElementHashCode=null;
204:                        el.setNotifyListeners(this .notifyListeners);
205:                        el.setNotifyMainListeners(this .notifyMainListeners);
206:                    }
207:                    List changedSubElements = new ArrayList(els);
208:                    XMLElementChangeInfo info = createInfo(value, value,
209:                            changedSubElements, XMLElementChangeInfo.INSERTED);
210:                    if (notifyListeners) {
211:                        notifyListeners(info);
212:                    }
213:                    if (notifyMainListeners) {
214:                        notifyMainListeners(info);
215:                    }
216:                    return true;
217:                }
218:
219:                return false;
220:            }
221:
222:            public int remove(XMLElement el) {
223:                if (isReadOnly) {
224:                    throw new RuntimeException(
225:                            "Can't remove element from read only structure!");
226:                }
227:                int ind = indexOf(el);
228:                if (ind >= 0) {
229:                    removeElement(ind);
230:                }
231:                return ind;
232:            }
233:
234:            public XMLElement remove(int no) {
235:                if (isReadOnly) {
236:                    throw new RuntimeException(
237:                            "Can't remove element from read only structure!");
238:                }
239:                if (no < 0 || no >= size())
240:                    throw new RuntimeException(
241:                            "There is no element at position " + no + "!");
242:
243:                return removeElement(no);
244:            }
245:
246:            protected XMLElement removeElement(int no) {
247:                XMLElement el = (XMLElement) elements.remove(no);
248:
249:                if (el != null) {
250:                    List oldPositions = new ArrayList();
251:                    oldPositions.add(new Integer(no));
252:                    List newPositions = new ArrayList();
253:                    newPositions.add(new Integer(no));
254:                    List changedPosition = new ArrayList();
255:                    changedPosition.add(el);
256:
257:                    if (changedPosition.size() > 0) {
258:                        XMLElementChangeInfo info = createInfo(oldPositions,
259:                                newPositions, changedPosition,
260:                                XMLElementChangeInfo.REPOSITIONED);
261:                        if (notifyListeners) {
262:                            notifyListeners(info);
263:                        }
264:                        if (notifyMainListeners) {
265:                            notifyMainListeners(info);
266:                        }
267:                    }
268:
269:                    el.setNotifyListeners(false);
270:                    el.setNotifyMainListeners(false);
271:                    List changedSubElements = new ArrayList();
272:                    changedSubElements.add(el);
273:
274:                    elementMap.remove(el);
275:
276:                    XMLElementChangeInfo info = createInfo(value, value,
277:                            changedSubElements, XMLElementChangeInfo.REMOVED);
278:                    if (notifyListeners) {
279:                        notifyListeners(info);
280:                    }
281:                    if (notifyMainListeners) {
282:                        notifyMainListeners(info);
283:                    }
284:                }
285:
286:                return el;
287:            }
288:
289:            public boolean removeAll(List els) {
290:                if (isReadOnly) {
291:                    throw new RuntimeException(
292:                            "Can't remove element from read only structure!");
293:                }
294:                if (els != null && els.size() > 0) {
295:                    List changedSubElements = new ArrayList(els);
296:
297:                    List oldPositions = new ArrayList();
298:                    List newPositions = new ArrayList();
299:
300:                    Iterator it = els.iterator();
301:                    while (it.hasNext()) {
302:                        XMLElement el = (XMLElement) it.next();
303:                        int oldPos = indexOf(el);
304:                        if (oldPos < 0) {
305:                            XMLUtil.removeXMLElementFromList(
306:                                    changedSubElements, el);
307:                        } else {
308:                            oldPositions.add(new Integer(oldPos));
309:                            newPositions.add(new Integer(oldPos));
310:                        }
311:                    }
312:
313:                    if (changedSubElements.size() > 0) {
314:                        XMLElementChangeInfo info = createInfo(oldPositions,
315:                                newPositions, changedSubElements,
316:                                XMLElementChangeInfo.REPOSITIONED);
317:                        if (notifyListeners) {
318:                            notifyListeners(info);
319:                        }
320:                        if (notifyMainListeners) {
321:                            notifyMainListeners(info);
322:                        }
323:                    }
324:
325:                    it = changedSubElements.iterator();
326:                    while (it.hasNext()) {
327:                        XMLElement el = (XMLElement) it.next();
328:                        el.setNotifyListeners(false);
329:                        el.setNotifyMainListeners(false);
330:                        elements.remove(indexOf(el));
331:                        elementMap.remove(el);
332:                    }
333:
334:                    XMLElementChangeInfo info = createInfo(value, value,
335:                            changedSubElements, XMLElementChangeInfo.REMOVED);
336:                    if (notifyListeners) {
337:                        notifyListeners(info);
338:                    }
339:                    if (notifyMainListeners) {
340:                        notifyMainListeners(info);
341:                    }
342:                    return true;
343:                }
344:
345:                return false;
346:            }
347:
348:            public boolean reposition(XMLElement el, int newPos) {
349:                if (isReadOnly) {
350:                    throw new RuntimeException(
351:                            "Can't reposition element from read only structure!");
352:                }
353:                int oldPos = indexOf(el);
354:                if (newPos < 0 || newPos > size() || oldPos < 0
355:                        || oldPos == newPos)
356:                    return false;
357:
358:                List oldPositions = new ArrayList();
359:                oldPositions.add(new Integer(indexOf(el)));
360:                List newPositions = new ArrayList();
361:                newPositions.add(new Integer(newPos));
362:                List changedPosition = new ArrayList();
363:                changedPosition.add(el);
364:
365:                elements.remove(((Integer) oldPositions.get(0)).intValue());
366:                elements.add(newPos, el);
367:
368:                if (changedPosition.size() > 0) {
369:                    XMLElementChangeInfo info = createInfo(oldPositions,
370:                            newPositions, changedPosition,
371:                            XMLElementChangeInfo.REPOSITIONED);
372:                    if (notifyListeners) {
373:                        notifyListeners(info);
374:                    }
375:                    if (notifyMainListeners) {
376:                        notifyMainListeners(info);
377:                    }
378:                }
379:
380:                return true;
381:            }
382:
383:            /**
384:             * Returns <tt>true</tt> if there are no elements within collection.
385:             */
386:            public boolean isEmpty() {
387:                return size() == 0;
388:            }
389:
390:            /**
391:             * Returns the element specified by Id attribute.
392:             * Use only if this is collection of XMLCollectionElements.
393:             */
394:            public XMLCollectionElement getCollectionElement(String id) {
395:                if (isReadOnly && cachesInitialized) {
396:                    return (XMLCollectionElement) elementMap.get(id);
397:                }
398:
399:                Iterator it = elements.iterator();
400:                while (it.hasNext()) {
401:                    XMLCollectionElement ce = (XMLCollectionElement) it.next();
402:                    if (ce.getId().equals(id)) {
403:                        return ce;
404:                    }
405:                }
406:                return null;
407:            }
408:
409:            /**
410:             * Returns true if element with given Id exists in collection.
411:             */
412:            public boolean containsElement(String id) {
413:                return getCollectionElement(id) != null;
414:            }
415:
416:            public int indexOf(XMLElement el) {
417:                return XMLUtil.indexOfXMLElementWithinList(elements, el);
418:            }
419:
420:            /** Clears the collection. */
421:            public void clear() {
422:                int size = elements.size();
423:
424:                List changedSubElements = new ArrayList(elements);
425:
426:                Iterator it = elements.iterator();
427:                while (it.hasNext()) {
428:                    XMLElement el = (XMLElement) it.next();
429:                    el.setNotifyListeners(false);
430:                    el.setNotifyMainListeners(false);
431:                }
432:                elements.clear();
433:                elementMap.clear();
434:
435:                if (size > 0) {
436:                    XMLElementChangeInfo info = createInfo(value, value,
437:                            changedSubElements, XMLElementChangeInfo.REMOVED);
438:                    if (notifyListeners) {
439:                        notifyListeners(info);
440:                    }
441:                    if (notifyMainListeners) {
442:                        notifyMainListeners(info);
443:                    }
444:                }
445:            }
446:
447:            /**
448:             * Generates the new element that made collection. Derived classes
449:             * has to implement this method to create it's collection element.
450:             */
451:            public abstract XMLElement generateNewElement();
452:
453:            protected void checkRepositioning(SequencedHashMap oldEls,
454:                    SequencedHashMap newEls) {
455:                //      System.err.println("CHECKREPFOR "+this);
456:                List oldPositions = new ArrayList();
457:                List newPositions = new ArrayList();
458:                List changedPosition = new ArrayList();
459:                List toReposition = new ArrayList(newEls.sequence());
460:                //      toRetain.retainAll(newEls.keySet());
461:
462:                //System.err.println("Start Repositioning, oldEls= "+oldEls+", newEls="+newEls);
463:
464:                for (int i = 0; i < toReposition.size(); i++) {
465:                    int oldpos = oldEls.indexOf(toReposition.get(i));
466:                    //         System.err.println("OLDPOS="+oldpos);
467:                    int newpos = newEls.indexOf(toReposition.get(i));
468:                    //         System.err.println("NEWPOS="+newpos);
469:                    if (oldpos != newpos) {
470:                        Object e = elements.get(oldpos);
471:                        changedPosition.add(e);
472:                        oldPositions.add(new Integer(oldpos));
473:                        newPositions.add(new Integer(newpos));
474:                    }
475:                }
476:
477:                if (changedPosition.size() > 0) {
478:                    for (int i = 0; i < changedPosition.size(); i++) {
479:                        XMLElement e = (XMLElement) changedPosition.get(i);
480:                        elements.remove(indexOf(e));
481:                        elements.add(
482:                                ((Integer) newPositions.get(i)).intValue(), e);
483:                    }
484:
485:                    XMLElementChangeInfo info = createInfo(oldPositions,
486:                            newPositions, changedPosition,
487:                            XMLElementChangeInfo.REPOSITIONED);
488:                    if (notifyListeners) {
489:                        notifyListeners(info);
490:                    }
491:                    if (notifyMainListeners) {
492:                        notifyMainListeners(info);
493:                    }
494:                }
495:            }
496:
497:            public Object clone() {
498:                XMLCollection d = (XMLCollection) super .clone();
499:                d.elements = new ArrayList();
500:                d.elementMap = new SequencedHashMap();
501:                d.cachesInitialized = false;
502:                Iterator it = this .elements.iterator();
503:                while (it.hasNext()) {
504:                    Object obj = it.next();
505:                    XMLElement el = (XMLElement) obj;
506:                    XMLElement cl = (XMLElement) el.clone();
507:                    cl.setParent(d);
508:                    d.elements.add(cl);
509:                }
510:                return d;
511:            }
512:
513:        }
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