Source Code Cross Referenced for SCOHashSet.java in  » Testing » PolePosition-0.20 » com » versant » core » jdo » sco » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » PolePosition 0.20 » com.versant.core.jdo.sco 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 1998 - 2005 Versant Corporation
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         * Versant Corporation - initial API and implementation
010:         */
011:        package com.versant.core.jdo.sco;
012:
013:        import com.versant.core.jdo.VersantPersistenceManagerImp;
014:        import com.versant.core.jdo.VersantStateManager;
015:        import com.versant.core.jdo.VersantStateManager;
016:        import com.versant.core.common.CollectionDiff;
017:        import com.versant.core.common.VersantFieldMetaData;
018:
019:        import javax.jdo.spi.PersistenceCapable;
020:        import java.util.Collection;
021:        import java.util.HashSet;
022:        import java.util.Iterator;
023:
024:        import com.versant.core.common.BindingSupportImpl;
025:        import com.versant.core.common.PersistenceContext;
026:
027:        /**
028:         * SCO for a HashSet.
029:         *
030:         * @keep-all
031:         */
032:        public class SCOHashSet extends HashSet implements 
033:                VersantManagedSCOCollection, VersantAdvancedSCO {
034:
035:            private transient PersistenceCapable owner;
036:            private transient VersantStateManager stateManager;
037:            private final transient VersantFieldMetaData fmd;
038:            private final transient boolean isMaster;
039:            private final transient boolean isMany;
040:            private final transient int inverseFieldNo;
041:            private transient Object[] originalData;
042:            private boolean beenReset;
043:
044:            public SCOHashSet(PersistenceCapable owner,
045:                    VersantStateManager stateManager, VersantFieldMetaData fmd,
046:                    Object[] originalData) {
047:                this .isMaster = fmd.isManaged() && fmd.isMaster();
048:                this .inverseFieldNo = fmd.getInverseFieldNo();
049:                this .owner = owner;
050:                this .stateManager = stateManager;
051:                this .fmd = fmd;
052:                this .isMany = fmd.isManaged() && fmd.isManyToMany();
053:                this .originalData = originalData;
054:                int n = originalData == null ? 0 : originalData.length;
055:                if (!owner.jdoIsNew()) {
056:                    for (int i = 0; i < n; i++) {
057:                        Object o = originalData[i];
058:                        if (o == null)
059:                            break;
060:                        super .add(o);
061:                    }
062:                } else if (isMaster) {
063:                    for (int i = 0; i < n; i++) {
064:                        Object o = originalData[i];
065:                        if (o == null)
066:                            throw createNPE();
067:                        super .add(o);
068:                        SCOInverseUtil.addMasterOnDetail(o, owner,
069:                                inverseFieldNo);
070:                    }
071:                } else if (isMany) {
072:                    for (int i = 0; i < n; i++) {
073:                        Object o = originalData[i];
074:                        if (o == null)
075:                            throw createNPE();
076:                        super .add(o);
077:                        SCOInverseUtil.addToOtherSideOfManyToMany(o,
078:                                inverseFieldNo, owner);
079:                    }
080:                } else {
081:                    for (int i = 0; i < n; i++) {
082:                        Object o = originalData[i];
083:                        if (o == null)
084:                            throw createNPE();
085:                        super .add(o);
086:                    }
087:                }
088:            }
089:
090:            private RuntimeException createNPE() {
091:                return BindingSupportImpl.getInstance().nullElement(
092:                        "Null element not allowed: " + fmd.getQName());
093:            }
094:
095:            public boolean add(Object o) {
096:                if (o == null)
097:                    throw createNPE();
098:                if (isMaster) {
099:                    boolean result = super .add(o);
100:                    if (result) {
101:                        makeDirty();
102:                        SCOInverseUtil.addMasterOnDetail(o, owner,
103:                                inverseFieldNo);
104:                    }
105:                    return result;
106:                } else if (isMany) {
107:                    boolean result = super .add(o);
108:                    if (result) {
109:                        makeDirty();
110:                        SCOInverseUtil.addToOtherSideOfManyToMany(o,
111:                                inverseFieldNo, owner);
112:                    }
113:                    return result;
114:                } else {
115:                    boolean result = super .add(o);
116:                    if (result)
117:                        makeDirty();
118:                    return result;
119:                }
120:            }
121:
122:            public boolean remove(Object o) {
123:                boolean result = super .remove(o);
124:                if (result) {
125:                    makeDirty();
126:                    if (isMaster) {
127:                        SCOInverseUtil.removeMasterOnDetail(o, owner,
128:                                inverseFieldNo);
129:                    } else if (isMany) {
130:                        SCOInverseUtil.removeFromOtherSideOfManyToMany(o,
131:                                inverseFieldNo, owner);
132:                    }
133:                }
134:                return result;
135:            }
136:
137:            public void clear() {
138:                if (isMaster) {
139:                    for (Iterator iter = super .iterator(); iter.hasNext();) {
140:                        SCOInverseUtil.removeMasterOnDetail(iter.next(), owner,
141:                                inverseFieldNo);
142:                    }
143:                } else if (isMany) {
144:                    for (Iterator iter = super .iterator(); iter.hasNext();) {
145:                        SCOInverseUtil.removeFromOtherSideOfManyToMany(iter
146:                                .next(), inverseFieldNo, owner);
147:                    }
148:                }
149:                super .clear();
150:                makeDirty();
151:            }
152:
153:            public boolean retainAll(Collection c) {
154:                if (isMaster) {
155:                    boolean modified = false;
156:                    Iterator e = super .iterator();
157:                    while (e.hasNext()) {
158:                        Object o = e.next();
159:                        if (!c.contains(o)) {
160:                            e.remove();
161:                            SCOInverseUtil.removeMasterOnDetail(o, owner,
162:                                    inverseFieldNo);
163:                            modified = true;
164:                        }
165:                    }
166:                    if (modified)
167:                        makeDirty();
168:                    return modified;
169:                } else if (isMany) {
170:                    boolean modified = false;
171:                    Iterator e = super .iterator();
172:                    while (e.hasNext()) {
173:                        Object o = e.next();
174:                        if (!c.contains(o)) {
175:                            e.remove();
176:                            SCOInverseUtil.removeFromOtherSideOfManyToMany(o,
177:                                    inverseFieldNo, owner);
178:                            modified = true;
179:                        }
180:                    }
181:                    if (modified)
182:                        makeDirty();
183:                    return modified;
184:                } else if (super .retainAll(c)) {
185:                    makeDirty();
186:                    return true;
187:                }
188:                return false;
189:            }
190:
191:            public boolean removeAll(Collection c) {
192:                if (isMaster) {
193:                    boolean modified = false;
194:                    Object o = null;
195:                    if (size() > c.size()) {
196:                        for (Iterator i = c.iterator(); i.hasNext();) {
197:                            o = i.next();
198:                            if (o != null) {
199:                                modified |= super .remove(o);
200:                                SCOInverseUtil.removeMasterOnDetail(o, owner,
201:                                        inverseFieldNo);
202:                            }
203:                        }
204:                    } else {
205:                        for (Iterator i = super .iterator(); i.hasNext();) {
206:                            o = i.next();
207:                            if (c.contains(o)) {
208:                                i.remove();
209:                                modified = true;
210:                                SCOInverseUtil.removeMasterOnDetail(o, owner,
211:                                        inverseFieldNo);
212:                            }
213:                        }
214:                    }
215:                    if (modified)
216:                        makeDirty();
217:                    return modified;
218:                } else if (isMany) {
219:                    boolean modified = false;
220:                    Object o = null;
221:                    if (size() > c.size()) {
222:                        for (Iterator i = c.iterator(); i.hasNext();) {
223:                            o = i.next();
224:                            if (o != null) {
225:                                boolean ans = super .remove(o);
226:                                if (ans) {
227:                                    modified = true;
228:                                    SCOInverseUtil
229:                                            .removeFromOtherSideOfManyToMany(o,
230:                                                    inverseFieldNo, owner);
231:                                }
232:                            }
233:                        }
234:                    } else {
235:                        for (Iterator i = super .iterator(); i.hasNext();) {
236:                            o = i.next();
237:                            if (c.contains(o)) {
238:                                i.remove();
239:                                modified = true;
240:                                SCOInverseUtil.removeFromOtherSideOfManyToMany(
241:                                        o, inverseFieldNo, owner);
242:                            }
243:                        }
244:                    }
245:                    if (modified)
246:                        makeDirty();
247:                    return modified;
248:                } else if (super .removeAll(c)) {
249:                    makeDirty();
250:                    return true;
251:                }
252:                return false;
253:            }
254:
255:            public boolean addAll(Collection c) {
256:                if (isMaster) {
257:                    boolean modified = false;
258:                    Object o = null;
259:                    Iterator e = c.iterator();
260:                    while (e.hasNext()) {
261:                        o = e.next();
262:                        if (o == null) {
263:                            throw createNPE();
264:                        } else if (super .add(o)) {
265:                            modified = true;
266:                            SCOInverseUtil.addMasterOnDetail(o, owner,
267:                                    inverseFieldNo);
268:                        }
269:                    }
270:                    if (modified)
271:                        makeDirty();
272:                    return modified;
273:                } else if (isMany) {
274:                    boolean modified = false;
275:                    Object o = null;
276:                    Iterator e = c.iterator();
277:                    while (e.hasNext()) {
278:                        o = e.next();
279:                        if (o == null) {
280:                            throw createNPE();
281:                        } else if (super .add(o)) {
282:                            modified = true;
283:                            SCOInverseUtil.addToOtherSideOfManyToMany(o,
284:                                    inverseFieldNo, owner);
285:                        }
286:                    }
287:                    if (modified)
288:                        makeDirty();
289:                    return modified;
290:                } else if (super .addAll(c)) {
291:                    makeDirty();
292:                    return true;
293:                }
294:                return false;
295:
296:            }
297:
298:            public Iterator iterator() {
299:                return new SCOIterator(super .iterator(), stateManager, owner,
300:                        fmd.getManagedFieldNo());
301:            }
302:
303:            public Object getOwner() {
304:                return owner;
305:            }
306:
307:            public void makeTransient() {
308:                owner = null;
309:                stateManager = null;
310:            }
311:
312:            public void makeDirty() {
313:                if (stateManager != null) {
314:                    stateManager.makeDirty(owner, fmd.getManagedFieldNo());
315:                }
316:            }
317:
318:            public void reset() {
319:                beenReset = true;
320:                originalData = toArray();
321:            }
322:
323:            public CollectionDiff getCollectionDiff(PersistenceContext pm) {
324:                Object[] data = toArray();
325:                return CollectionDiffUtil.getUnorderedCollectionDiff(fmd, pm,
326:                        data, data.length,
327:                        (owner.jdoIsNew() && !beenReset) ? null : originalData);
328:            }
329:
330:            public void manyToManyAdd(Object o) {
331:                if (super .add(o))
332:                    makeDirty();
333:            }
334:
335:            public void manyToManyRemove(Object o) {
336:                if (super .remove(o))
337:                    makeDirty();
338:            }
339:
340:            /**
341:             * Is the collection ordered.
342:             */
343:            public boolean isOrdered() {
344:                return fmd.isOrdered();
345:            }
346:
347:            /**
348:             * Put references to all the values into collectionData. If the
349:             * values are PC instances then the instances themselves or their
350:             * OIDs may be stored in collectionData.
351:             */
352:            public CollectionData fillCollectionData(
353:                    CollectionData collectionData) {
354:                int size = size();
355:                collectionData.valueCount = size;
356:                Object[] newData;
357:                Object[] values = collectionData.values;
358:                if (values == null || values.length < size) {
359:                    newData = new Object[size];
360:                } else {
361:                    newData = values;
362:                }
363:                int i = 0;
364:                for (Iterator it = this.iterator(); it.hasNext();) {
365:                    newData[i++] = it.next();
366:                }
367:                collectionData.values = newData;
368:                return collectionData;
369:            }
370:        }
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