Source Code Cross Referenced for Link.java in  » Database-ORM » ODAL » com » completex » objective » components » persistency » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » ODAL » com.completex.objective.components.persistency 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


0001:        /**
0002:         *  Objective Database Abstraction Layer (ODAL)
0003:         *  Copyright (c) 2004, The ODAL Development Group
0004:         *  All rights reserved.
0005:         *  For definition of the ODAL Development Group please refer to LICENCE.txt file
0006:         *
0007:         *  Distributable under LGPL license.
0008:         *  See terms of license at gnu.org.
0009:         */package com.completex.objective.components.persistency;
0010:
0011:        import com.completex.objective.components.persistency.core.impl.LinkIterator;
0012:        import com.completex.objective.util.PropertyMap;
0013:
0014:        import java.io.Serializable;
0015:        import java.util.ArrayList;
0016:        import java.util.Arrays;
0017:        import java.util.Collection;
0018:        import java.util.HashMap;
0019:        import java.util.HashSet;
0020:        import java.util.Iterator;
0021:        import java.util.LinkedHashMap;
0022:        import java.util.LinkedList;
0023:        import java.util.List;
0024:        import java.util.Map;
0025:        import java.util.Set;
0026:
0027:        /**
0028:         * Represents tree structure used to create Query trees as well as PersistentObject trees.
0029:         *
0030:         * @author Gennady Krizhevsky
0031:         */
0032:        public class Link extends ParentBase implements  Parent, Serializable,
0033:                Cloneable, Mappable {
0034:            static final long serialVersionUID = 1L;
0035:            public static final String SEP = "|";
0036:
0037:            private transient Query query;
0038:            private transient LifeCycleController lifeCycleController;
0039:            protected transient int[] parentIndeces;
0040:            protected transient int[] this Indeces;
0041:            private transient boolean lazyRetrieval;
0042:            private transient boolean insertBeforeParent; /* it means also "update Before Parent" & "delete After Parent" */
0043:            private transient boolean cascadeDelete;
0044:            private transient boolean cascadeInsert;
0045:            private transient boolean cascadeUpdate;
0046:            private transient boolean treatNullAsRemove;
0047:            private transient int dependencyIndex = -1;
0048:            protected transient InlineMode inlineMode;
0049:            private transient boolean retrieved;
0050:            private transient boolean adHoc;
0051:
0052:            private boolean endOfChain;
0053:            private Object result;
0054:            private String name;
0055:            // Meta data:
0056:            private List path = new LinkedList();
0057:            private static final String TAG_PARENT_INDECES = "parentIndeces";
0058:            private static final String TAG_THIS_INDECES = "thisIndeces";
0059:            private static final String TAG_NAME = "name";
0060:            public static final String TAG_QUERY = "query";
0061:            public static final String TAG_QUERY_CLASS = "queryClass";
0062:
0063:            public Link() {
0064:            }
0065:
0066:            public Link(Map map) {
0067:                fromMap(map);
0068:            }
0069:
0070:            public Link(String name) {
0071:                setName(name);
0072:            }
0073:
0074:            public Link(String name, Object result) {
0075:                this .name = name;
0076:                this .result = result;
0077:            }
0078:
0079:            public Link(String name, Object result, boolean adHoc) {
0080:                this .name = name;
0081:                this .result = result;
0082:                this .adHoc = adHoc;
0083:            }
0084:
0085:            /**
0086:             * @param query         Query object
0087:             * @param parentIndeces parent indeces which values are mapped to corresponding "this indeces"
0088:             * @param thisIndeces   "this indeces" indeces which values are mapped to corresponding parent ones
0089:             */
0090:            public Link(Query query, int[] parentIndeces, int this Indeces[]) {
0091:                this (query, parentIndeces, this Indeces, null);
0092:            }
0093:
0094:            /**
0095:             * @param query         Query object
0096:             * @param parentIndeces parent indeces which values are mapped to corresponding "this indeces"
0097:             * @param thisIndeces   "this indeces" indeces of this link query's SingularResultFactory
0098:             *                      which values are mapped to corresponding parent ones
0099:             * @param name          link name - mandatory for PersistentObject trees
0100:             */
0101:            public Link(Query query, int[] parentIndeces, int this Indeces[],
0102:                    String name) {
0103:                this .query = query;
0104:                this .parentIndeces = parentIndeces;
0105:                this .name = name;
0106:                if (parentIndeces == null) {
0107:                    addToPath(getName());
0108:                } else {
0109:                    if (this Indeces == null) {
0110:                        throw new IllegalArgumentException(
0111:                                "thisIndeces == null");
0112:                    }
0113:                    if (this Indeces.length != parentIndeces.length) {
0114:                        throw new IllegalArgumentException(
0115:                                "thisIndeces.length != parentIndeces.length");
0116:                    }
0117:                    this .this Indeces = this Indeces;
0118:                }
0119:            }
0120:
0121:            public Link(Link source) {
0122:                this (source.query, source.parentIndeces, source.this Indeces,
0123:                        source.name);
0124:            }
0125:
0126:            public Link copyAll(Link source) {
0127:                this .query = source.query;
0128:                this .lifeCycleController = source.lifeCycleController;
0129:                this .parentIndeces = source.parentIndeces;
0130:                this .this Indeces = source.this Indeces;
0131:                this .lazyRetrieval = source.lazyRetrieval;
0132:                this .insertBeforeParent = source.insertBeforeParent;
0133:                this .cascadeDelete = source.cascadeDelete;
0134:                this .cascadeInsert = source.cascadeInsert;
0135:                this .cascadeUpdate = source.cascadeUpdate;
0136:                this .treatNullAsRemove = source.treatNullAsRemove;
0137:                this .dependencyIndex = source.dependencyIndex;
0138:                this .inlineMode = source.inlineMode;
0139:                this .endOfChain = source.endOfChain;
0140:                this .result = source.result;
0141:                this .name = source.name;
0142:                this .path = source.path;
0143:                return this ;
0144:            }
0145:
0146:            /**
0147:             * Returns itself
0148:             *
0149:             * @return itself
0150:             */
0151:            public Link toLink() {
0152:                return this ;
0153:            }
0154:
0155:            /**
0156:             * Sets cascadeDelete = true; cascadeInsert = true; cascadeUpdate = true. Values are used in
0157:             * PersistentObject trees
0158:             *
0159:             * @return itself
0160:             */
0161:            public Link setCascadeAll() {
0162:                cascadeDelete = true;
0163:                cascadeInsert = true;
0164:                cascadeUpdate = true;
0165:                return this ;
0166:            }
0167:
0168:            /**
0169:             * Unsets cascadeDelete = true; cascadeInsert = true; cascadeUpdate = true. Values are used in
0170:             * PersistentObject trees
0171:             *
0172:             * @return itself
0173:             */
0174:            public Link unsetCascadeAll() {
0175:                cascadeDelete = false;
0176:                cascadeInsert = false;
0177:                cascadeUpdate = false;
0178:                return this ;
0179:            }
0180:
0181:            /**
0182:             * Sets setRelationship to parent
0183:             *
0184:             * @param relationshipType
0185:             * @see RelationshipType
0186:             */
0187:            public void setRelationshipToParent(
0188:                    RelationshipType relationshipType) {
0189:                if (MANY_TO_ONE.equals(relationshipType)) {
0190:                    insertBeforeParent = true;
0191:                }
0192:            }
0193:
0194:            /**
0195:             * Returns LifeCycleController set for this link
0196:             *
0197:             * @return LifeCycleController set for this link
0198:             */
0199:            public LifeCycleController getLifeCycleController() {
0200:                return lifeCycleController;
0201:            }
0202:
0203:            /**
0204:             * Sets LifeCycleController for this link
0205:             *
0206:             * @param lifeCycleController
0207:             */
0208:
0209:            public void setLifeCycleController(
0210:                    LifeCycleController lifeCycleController) {
0211:                this .lifeCycleController = lifeCycleController;
0212:            }
0213:
0214:            /**
0215:             * Sets link name. Link name is mandatory for PersistentObject trees
0216:             *
0217:             * @param name link name
0218:             */
0219:            public void setName(String name) {
0220:                this .name = name;
0221:            }
0222:
0223:            /**
0224:             * Returns link name
0225:             *
0226:             * @return link name
0227:             */
0228:            public String getName() {
0229:                return name;
0230:            }
0231:
0232:            /**
0233:             * Returns true is this link is end of link chain. Marking link as end of chain prevents
0234:             * infinite loops of retrievals when circular link references are set.
0235:             *
0236:             * @return true is this link is end of link chain
0237:             */
0238:            public boolean isEndOfChain() {
0239:                return endOfChain;
0240:            }
0241:
0242:            /**
0243:             * If true - this link is end of link chain. Marking link as end of chain prevents
0244:             * infinite loops of retrievals when circular link references are set.
0245:             *
0246:             * @param endOfChain true is this link is end of link chain
0247:             */
0248:            public void setEndOfChain(boolean endOfChain) {
0249:                this .endOfChain = endOfChain;
0250:            }
0251:
0252:            /**
0253:             * Returns link dependency index
0254:             *
0255:             * @return link dependency index
0256:             */
0257:            public int getDependencyIndex() {
0258:                return dependencyIndex;
0259:            }
0260:
0261:            /**
0262:             * Sets link dependency index
0263:             *
0264:             * @param dependencyIndex link dependency index
0265:             */
0266:            public void setDependencyIndex(int dependencyIndex) {
0267:                this .dependencyIndex = dependencyIndex;
0268:            }
0269:
0270:            /**
0271:             * Returns "this indeces" - indeces of this link query's SingularResultFactory
0272:             * which values are mapped to corresponding parent ones. Usually they are foregn key ones
0273:             *
0274:             * @return "this indeces" - indeces of this link query's SingularResultFactory
0275:             *         which values are mapped to corresponding parent ones
0276:             */
0277:            public int[] getThisIndeces() {
0278:                return this Indeces;
0279:            }
0280:
0281:            /**
0282:             * Sets "this indeces" - indeces of this link query's SingularResultFactory
0283:             * which values are mapped to corresponding parent ones. Usually they are foregn key ones
0284:             *
0285:             * @param thisIndeces "this indeces" - indeces of this link query's SingularResultFactory
0286:             *                    which values are mapped to corresponding parent ones
0287:             */
0288:            public void setThisIndeces(int[] this Indeces) {
0289:                this .this Indeces = this Indeces;
0290:            }
0291:
0292:            /**
0293:             * Returns parent indeces - indeces of the parent persistent object which contains a link [pointing to itself.
0294:             * Usually they are the primary key ones.
0295:             *
0296:             * @return parent indeces - indeces of the parent persistent object which contains a link [pointing to itself.
0297:             *         Usually they are the primary key ones.
0298:             */
0299:            public int[] getParentIndeces() {
0300:                return parentIndeces;
0301:            }
0302:
0303:            /**
0304:             * Sets parent indeces - indeces of the parent persistent object which contains a link [pointing to itself.
0305:             * Usually they are the primary key ones.
0306:             *
0307:             * @param parentIndeces indeces of the parent persistent object which contains a link [pointing to itself.
0308:             *                      Usually they are the primary key ones.
0309:             */
0310:            public void setParentIndeces(int[] parentIndeces) {
0311:                this .parentIndeces = parentIndeces;
0312:            }
0313:
0314:            /**
0315:             * Returns full path to this link built of the names of the parent chain
0316:             *
0317:             * @return full path to this link built of the names of the parent chain
0318:             */
0319:            public String getPathString() {
0320:                StringBuffer buffer = new StringBuffer();
0321:                for (int i = 0; i < path.size(); i++) {
0322:                    buffer.append(path.get(i));
0323:                    if (i < path.size() - 1) {
0324:                        buffer.append(SEP);
0325:                    }
0326:                }
0327:                return buffer.toString();
0328:            }
0329:
0330:            public void setPath(String pathString) {
0331:                path = string2path(pathString);
0332:            }
0333:
0334:            public static String path2string(List path) {
0335:                StringBuffer buffer = new StringBuffer();
0336:                for (int i = 0; i < path.size(); i++) {
0337:                    buffer.append(path.get(i));
0338:                    if (i < path.size() - 1) {
0339:                        buffer.append(SEP);
0340:                    }
0341:                }
0342:                return buffer.toString();
0343:            }
0344:
0345:            public static List string2path(String pathString) {
0346:                String[] tokens = pathString.split(SEP);
0347:                ArrayList path = new ArrayList(tokens.length);
0348:                for (int i = 0; i < path.size(); i++) {
0349:                    path.add(tokens[i]);
0350:                }
0351:                return path;
0352:            }
0353:
0354:            /**
0355:             * Sets full path to this link built of the names of the parent chain
0356:             *
0357:             * @param path full path to this link built of the names of the parent chain
0358:             */
0359:            void setPath(List path) {
0360:                this .path = path;
0361:            }
0362:
0363:            /**
0364:             * Returns full path to this link built of the names of the parent chain
0365:             *
0366:             * @return full path to this link built of the names of the parent chain
0367:             */
0368:            public List getPath() {
0369:                return path;
0370:            }
0371:
0372:            /**
0373:             * Appends all of the elements in the specified parentPath to the end of
0374:             * this link's path
0375:             *
0376:             * @param parentPath to append to the end of
0377:             *                   this link's path
0378:             */
0379:            public void addParentPath(List parentPath) {
0380:                if (parentPath != null) {
0381:                    for (int i = 0; i < parentPath.size(); i++) {
0382:                        String parentName = (String) parentPath.get(i);
0383:                        addToPath0(parentName);
0384:                    }
0385:                }
0386:            }
0387:
0388:            /**
0389:             * Adds name to this link's path
0390:             *
0391:             * @param name to add
0392:             */
0393:            public void addToPath(String name) {
0394:                addToPath0(name);
0395:                setName(name);
0396:            }
0397:
0398:            private void addToPath0(String name) {
0399:                if (path.size() > 0) {
0400:                    String lastName = (String) path.get(path.size() - 1);
0401:                    if (lastName.equals(name)) {
0402:                        throw new IllegalArgumentException(
0403:                                "Attempt to add name twice");
0404:                    }
0405:                } else if (!ROOT.equals(name)) {
0406:                    path.add(ROOT);
0407:                }
0408:                if (name != null) {
0409:                    path.add(name);
0410:                }
0411:            }
0412:
0413:            /**
0414:             * Returns result - data that is set during query execution for selects
0415:             * or by using setter methods for update operations
0416:             *
0417:             * @return result - data that is set during query execution for selects
0418:             *         or by using setter methods for update operations
0419:             */
0420:            public Object getResult() {
0421:                return result;
0422:            }
0423:
0424:            public Collection getResultAsCollection() {
0425:                return (Collection) result;
0426:            }
0427:
0428:            public void addToResultCollection(Object value) {
0429:                getResultAsCollection().add(value);
0430:            }
0431:
0432:            public void addNotNullToResultCollection(Object value) {
0433:                if (value != null) {
0434:                    getResultAsCollection().add(value);
0435:                }
0436:            }
0437:
0438:            /**
0439:             * Sets result - data that is set during query execution for selects
0440:             * or by using setter methods for update operations
0441:             *
0442:             * @param result data that is set during query execution for selects
0443:             *               or by using setter methods for update operations
0444:             */
0445:            public void setResult(Object result) {
0446:                this .result = result;
0447:            }
0448:
0449:            /**
0450:             * Returns query that is used to retrieve object trees
0451:             *
0452:             * @return query that is used to retrieve object trees
0453:             */
0454:            public Query getQuery() {
0455:                return query;
0456:            }
0457:
0458:            /**
0459:             * Sets query that is used to retrieve object trees
0460:             *
0461:             * @param query query that is used to retrieve object trees
0462:             */
0463:            public void setQuery(Query query) {
0464:                this .query = query;
0465:            }
0466:
0467:            /**
0468:             * Returns true the result of this link has to be performed in "lazy" fashion
0469:             *
0470:             * @return true the result of this link has to be performed in "lazy" fashion
0471:             */
0472:            public boolean isLazyRetrieval() {
0473:                return lazyRetrieval;
0474:            }
0475:
0476:            /**
0477:             * Sets true the result of this link has to be performed in "lazy" fashion
0478:             *
0479:             * @param lazyRetrieval true the result of this link has to be performed in "lazy" fashion
0480:             */
0481:            public void setLazyRetrieval(boolean lazyRetrieval) {
0482:                this .lazyRetrieval = lazyRetrieval;
0483:            }
0484:
0485:            /**
0486:             * Returns true if the result (data) of this link is to be inserted before the parent link's one
0487:             *
0488:             * @return true if the result (data) of this link is to be inserted before the parent link's one
0489:             */
0490:            public boolean isInsertBeforeParent() {
0491:                return insertBeforeParent;
0492:            }
0493:
0494:            /**
0495:             * Sets true if the result (data) of this link is to be inserted before the parent link's one
0496:             *
0497:             * @param insertBeforeParent true if the result (data) of this link is to be inserted before the parent link's one
0498:             */
0499:            public void setInsertBeforeParent(boolean insertBeforeParent) {
0500:                this .insertBeforeParent = insertBeforeParent;
0501:            }
0502:
0503:            /**
0504:             * Returns true if for one-to-one inversed relationship
0505:             * (this link contains foreign key object and its child contains the primary key ones)
0506:             * nullifying the foregn key field should cause deletion of the child object
0507:             *
0508:             *
0509:             * @return true if for one-to-one inversed relationship
0510:             * (this link contains foreign key object and its child contains the primary key ones)
0511:             * nullifying the foregn key field should cause deletion of the child object
0512:             */
0513:            public boolean isTreatNullAsRemove() {
0514:                return treatNullAsRemove;
0515:            }
0516:
0517:            /**
0518:             * Sets true if for one-to-one inversed relationship
0519:             * (this link contains foreign key object and its child contains the primary key ones)
0520:             * nullifying the foregn key field should cause deletion of the child object
0521:             *
0522:             * @param treatNullAsRemove true if for one-to-one inversed relationship
0523:             * (this link contains foreign key object and its child contains the primary key ones)
0524:             * nullifying the foregn key field should cause deletion of the child object
0525:             */
0526:            public void setTreatNullAsRemove(boolean treatNullAsRemove) {
0527:                this .treatNullAsRemove = treatNullAsRemove;
0528:            }
0529:
0530:            /**
0531:             * Returns true if delete is to be propagated to this link when the parent one gets deleted
0532:             *
0533:             * @return true if delete is to be propagated to this link when the parent one gets deleted
0534:             */
0535:            public boolean isCascadeDelete() {
0536:                return cascadeDelete;
0537:            }
0538:
0539:            /**
0540:             * Sets true if delete is to be propagated to this link when the parent one gets deleted
0541:             *
0542:             * @param cascadeDelete true if delete is to be propagated to this link when the parent one gets deleted
0543:             */
0544:            public void setCascadeDelete(boolean cascadeDelete) {
0545:                this .cascadeDelete = cascadeDelete;
0546:            }
0547:
0548:            /**
0549:             * Returns true if delete is to be propagated to this link when the parent one gets inserted
0550:             *
0551:             * @return true if delete is to be propagated to this link when the parent one gets inserted
0552:             */
0553:            public boolean isCascadeInsert() {
0554:                return cascadeInsert;
0555:            }
0556:
0557:            /**
0558:             * Sets true if delete is to be propagated to this link when the parent one gets inserted
0559:             *
0560:             * @param cascadeInsert true if delete is to be propagated to this link when the parent one gets inserted
0561:             */
0562:            public void setCascadeInsert(boolean cascadeInsert) {
0563:                this .cascadeInsert = cascadeInsert;
0564:            }
0565:
0566:            /**
0567:             * Returns true if delete is to be propagated to this link when the parent one gets updated
0568:             *
0569:             * @return true if delete is to be propagated to this link when the parent one gets updated
0570:             */
0571:            public boolean isCascadeUpdate() {
0572:                return cascadeUpdate;
0573:            }
0574:
0575:            /**
0576:             * Sets true if delete is to be propagated to this link when the parent one gets updated
0577:             *
0578:             * @param cascadeUpdate true if delete is to be propagated to this link when the parent one gets updated
0579:             */
0580:            public void setCascadeUpdate(boolean cascadeUpdate) {
0581:                this .cascadeUpdate = cascadeUpdate;
0582:            }
0583:
0584:            /**
0585:             * Experimental
0586:             */
0587:            public boolean isInline() {
0588:                return inlineMode != null;
0589:            }
0590:
0591:            /**
0592:             * Experimental
0593:             */
0594:            public InlineMode getInlineMode() {
0595:                return inlineMode;
0596:            }
0597:
0598:            /**
0599:             * Experimental
0600:             */
0601:            public void setInlineMode(InlineMode inlineMode) {
0602:                this .inlineMode = inlineMode;
0603:            }
0604:
0605:            /**
0606:             * Returns new instance of this link that inherits set of its parent properties
0607:             *
0608:             * @return new instance of this link that inherits set of its parent properties
0609:             */
0610:            public Link newInstance() {
0611:                Query query = null;
0612:                if (this .query != null) {
0613:                    query = this .query.newQuery();
0614:                }
0615:                Link link = newInstance0(query);
0616:                link.setName(name);
0617:                link.setPath(path);
0618:                link.setLazyRetrieval(lazyRetrieval);
0619:                link.setInsertBeforeParent(insertBeforeParent);
0620:                link.setDependencyIndex(dependencyIndex);
0621:                link.setCascadeDelete(cascadeDelete);
0622:                link.setCascadeInsert(cascadeInsert);
0623:                link.setCascadeUpdate(cascadeUpdate);
0624:                link.setTreatNullAsRemove(treatNullAsRemove);
0625:                link.setEndOfChain(endOfChain);
0626:                if (lifeCycleController != null) {
0627:                    link.setLifeCycleController(lifeCycleController
0628:                            .newLifeCycleInstance());
0629:                }
0630:                link.path = cloneList(path);
0631:                return link;
0632:            }
0633:
0634:            List cloneList(List list) {
0635:                if (list instanceof  LinkedList) {
0636:                    return (List) ((LinkedList) list).clone();
0637:                } else if (list instanceof  ArrayList) {
0638:                    return (List) ((ArrayList) list).clone();
0639:                } else {
0640:                    throw new RuntimeException("Unsupported type " + list);
0641:                }
0642:            }
0643:
0644:            protected Link newInstance0(Query query) {
0645:                return new Link(query, parentIndeces, this Indeces);
0646:            }
0647:
0648:            /**
0649:             * Returns Deep copy of this link
0650:             *
0651:             * @return Deep copy of this link
0652:             * @throws CloneNotSupportedException
0653:             */
0654:            public Object clone() throws CloneNotSupportedException {
0655:                Link link = (Link) super .clone();
0656:                Object result = link.getResult();
0657:                Object clonedResult = link.getResult();
0658:                if (query != null) {
0659:                    link.setQuery(((Query) query.clone()));
0660:                }
0661:                if (result != null) {
0662:                    if (result instanceof  com.completex.objective.components.persistency.Cloneable) {
0663:                        clonedResult = ((com.completex.objective.components.persistency.Cloneable) result)
0664:                                .clone();
0665:                    } else if (result instanceof  LinkedList) {
0666:                        clonedResult = ((LinkedList) result).clone();
0667:                        populateClonedCollection(((List) clonedResult));
0668:                    } else if (result instanceof  ArrayList) {
0669:                        clonedResult = ((ArrayList) result).clone();
0670:                        populateClonedCollection(((List) clonedResult));
0671:                    } else if (result instanceof  HashSet) {
0672:                        clonedResult = ((HashSet) result).clone();
0673:                        populateClonedCollection(((Set) clonedResult));
0674:                    } else if (result instanceof  HashMap) {
0675:                        clonedResult = ((HashMap) result).clone();
0676:                        populateClonedMap(((Map) clonedResult));
0677:                    }
0678:                }
0679:                link.setResult(clonedResult);
0680:                if (link.hasChildren()) {
0681:                    for (LinkIterator it = linkIterator(); it.hasNext();) {
0682:                        Link child = it.nextLink();
0683:                        child.clone();
0684:                    }
0685:                }
0686:                link.inlineMode = inlineMode;
0687:                return link;
0688:            }
0689:
0690:            public void populateClonedCollection(Collection collection) {
0691:                if (collection == null) {
0692:                    return;
0693:                }
0694:                AbstractPersistentObject[] objects = (AbstractPersistentObject[]) collection
0695:                        .toArray(new AbstractPersistentObject[collection.size()]);
0696:                for (int i = 0; i < objects.length; i++) {
0697:                    AbstractPersistentObject object = objects[i];
0698:                    if (objects[i] != null) {
0699:                        objects[i] = (AbstractPersistentObject) object.clone();
0700:                    }
0701:                }
0702:                collection.clear();
0703:                collection.addAll(Arrays.asList(objects));
0704:
0705:            }
0706:
0707:            public void populateClonedMap(Map map) {
0708:                if (map == null) {
0709:                    return;
0710:                }
0711:                for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
0712:                    Map.Entry entry = (Map.Entry) it.next();
0713:                    Object value = entry.getValue();
0714:                    if (value instanceof  AbstractPersistentObject) {
0715:                        entry.setValue(((AbstractPersistentObject) value)
0716:                                .clone());
0717:                    }
0718:                }
0719:
0720:            }
0721:
0722:            /**
0723:             * Copies results from "from" link to this one without touching children
0724:             *
0725:             * @param from
0726:             */
0727:            public void copyResultsOneLevel(Link from) {
0728:                copyResultsOneLevel(from, this );
0729:            }
0730:
0731:            /**
0732:             * Copies results from "from" link to this one including children
0733:             *
0734:             * @param from
0735:             */
0736:            public void copyResults(Link from) {
0737:                copyResults(from, this , 0);
0738:            }
0739:
0740:            private static void copyResultsOneLevel(Link from, Link to) {
0741:                if (from == null || to == null) {
0742:                    return;
0743:                }
0744:
0745:                if (from.getResult() != null) {
0746:                    to.setResult(from.getResult());
0747:                }
0748:
0749:            }
0750:
0751:            // Copy results from parameter to this:
0752:            public static void copyResults(Link from, Link to, int level) {
0753:                level++;
0754:                if (from == null || to == null) {
0755:                    return;
0756:                }
0757:
0758:                if (from.getResult() != null) {
0759:                    to.setResult(from.getResult());
0760:                }
0761:
0762:                LinkedHashMap toChildren = to.getChildren();
0763:                if (toChildren != null) {
0764:                    for (LinkIterator it = from.linkIterator(); it.hasNext();) {
0765:                        Link fromChild = it.nextLink();
0766:                        String name = fromChild.getName();
0767:                        Link toChild = (Link) toChildren.get(name);
0768:                        if (toChild != null) {
0769:                            copyResults(fromChild, toChild, level);
0770:                        } else {
0771:                            // case when ad-hoc results are added:
0772:                            fromChild.setAdHoc(true);
0773:                            toChildren.put(name, fromChild);
0774:                        }
0775:                    }
0776:                }
0777:            }
0778:
0779:            public boolean isAdHoc() {
0780:                return adHoc;
0781:            }
0782:
0783:            public void setAdHoc(boolean adHoc) {
0784:                this .adHoc = adHoc;
0785:            }
0786:
0787:            public boolean isRetrieved() {
0788:                return retrieved;
0789:            }
0790:
0791:            public void setRetrieved(boolean retrieved) {
0792:                this .retrieved = retrieved;
0793:            }
0794:
0795:            public Map toMap() {
0796:                Map map = super .toMap();
0797:                toMapArray(map, TAG_PARENT_INDECES, parentIndeces);
0798:                toMapArray(map, TAG_THIS_INDECES, this Indeces);
0799:                map.put(TAG_NAME, name);
0800:                if (query != null) {
0801:                    map.put(TAG_QUERY, ((Mappable) query).toMap());
0802:                    map.put(TAG_QUERY_CLASS, query.getClass().getName());
0803:                }
0804:
0805:                return map;
0806:            }
0807:
0808:            public void fromMap(Map map) {
0809:                super .fromMap(map);
0810:                PropertyMap propertyMap = PropertyMap.toPropertyMap(map);
0811:                parentIndeces = fromMapToIntArray(propertyMap,
0812:                        TAG_PARENT_INDECES);
0813:                this Indeces = fromMapToIntArray(propertyMap, TAG_THIS_INDECES);
0814:                name = propertyMap.getProperty(TAG_NAME);
0815:                Map queryMap = propertyMap.getMap(TAG_QUERY);
0816:                if (queryMap != null) {
0817:                    String queryClassName = propertyMap.getProperty(
0818:                            TAG_QUERY_CLASS, true);
0819:                    try {
0820:                        query = (Query) Class.forName(queryClassName)
0821:                                .newInstance();
0822:                    } catch (Exception e) {
0823:                        throw new OdalRuntimePersistencyException(
0824:                                "Cannot instantiate class by name "
0825:                                        + queryClassName, e);
0826:                    }
0827:                    ((Mappable) query).fromMap(queryMap);
0828:                }
0829:            }
0830:
0831:            protected void toMapArray(Map map, String tag, int[] array) {
0832:                if (array != null) {
0833:                    String[] arrayS = new String[array.length];
0834:                    for (int i = 0; i < array.length; i++) {
0835:                        arrayS[i] = String.valueOf(array[i]);
0836:                    }
0837:                    map.put(tag, Arrays.asList(arrayS));
0838:                }
0839:            }
0840:
0841:            protected int[] fromMapToIntArray(PropertyMap map, String tag) {
0842:                int[] array = null;
0843:                List list = map.getList(tag);
0844:                if (list != null) {
0845:                    array = new int[list.size()];
0846:                    for (int i = 0; i < list.size(); i++) {
0847:                        String value = (String) list.get(i);
0848:                        int intValue = 0;
0849:                        if (value != null) {
0850:                            intValue = Integer.parseInt(value);
0851:                        }
0852:                        array[i] = intValue;
0853:                    }
0854:                }
0855:                return array;
0856:            }
0857:
0858:            public String toString() {
0859:                StringBuffer buffer = new StringBuffer(" Link : {");
0860:                buffer.append("name = ").append(name);
0861:                buffer.append(parentIndecesBuffer());
0862:                buffer.append("; dependencyIndex = (").append(dependencyIndex)
0863:                        .append(")");
0864:                buffer.append("; path = ").append(getPathString());
0865:                buffer.append("; parent path = ");
0866:
0867:                StringBuffer parentIndecesBuffer = new StringBuffer(
0868:                        "; parentIndeces [");
0869:                if (parentIndeces != null) {
0870:                    for (int i = 0; i < parentIndeces.length; i++) {
0871:                        if (i > 0) {
0872:                            parentIndecesBuffer.append(", ");
0873:                        }
0874:                        parentIndecesBuffer.append(parentIndeces[i]);
0875:                    }
0876:                } else {
0877:                    parentIndecesBuffer.append("null");
0878:                }
0879:                parentIndecesBuffer.append("]");
0880:
0881:                if (getParentLink() != null) {
0882:                    buffer.append(getParentLink().getPathString());
0883:                } else {
0884:                    buffer.append("null");
0885:                }
0886:                buffer.append("; result = (").append(result).append(")");
0887:                buffer.append("}");
0888:                return super .toString() + buffer.toString();
0889:            }
0890:
0891:            /**
0892:             * Returns summary string
0893:             *
0894:             * @return summary string
0895:             */
0896:            public String toSummaryString() {
0897:                StringBuffer buffer = new StringBuffer(" Link<");
0898:                buffer.append("name = ").append(name);
0899:                buffer.append(parentIndecesBuffer()).append(">");
0900:                return super .toString() + buffer.toString();
0901:            }
0902:
0903:            private StringBuffer parentIndecesBuffer() {
0904:                StringBuffer parentIndecesBuffer = new StringBuffer(
0905:                        "; parentIndeces [");
0906:                if (parentIndeces != null) {
0907:                    for (int i = 0; i < parentIndeces.length; i++) {
0908:                        if (i > 0) {
0909:                            parentIndecesBuffer.append(", ");
0910:                        }
0911:                        parentIndecesBuffer.append(parentIndeces[i]);
0912:                    }
0913:                } else {
0914:                    parentIndecesBuffer.append("null");
0915:                }
0916:                parentIndecesBuffer.append("]");
0917:                return parentIndecesBuffer;
0918:            }
0919:
0920:            public static final RelationshipType ONE_TO_MANY = RelationshipType.ONE_TO_MANY;
0921:            public static final RelationshipType ONE_TO_ONE = RelationshipType.ONE_TO_ONE;
0922:            public static final RelationshipType MANY_TO_ONE = RelationshipType.MANY_TO_ONE;
0923:            public static final RelationshipType MANY_TO_MANY = RelationshipType.MANY_TO_MANY;
0924:
0925:            public static final String INLINE_INNER = "inner";
0926:            public static final String INLINE_OUTER = "outer";
0927:            /**
0928:             * Inner (or equi-) join mode:
0929:             */
0930:            public static final InlineMode INNER_JOIN_MODE = new InlineMode(
0931:                    INLINE_INNER);
0932:
0933:            /**
0934:             * Outer (left outer) join mode
0935:             */
0936:            public static final InlineMode OUTER_JOIN_MODE = new InlineMode(
0937:                    INLINE_OUTER);
0938:
0939:            public static InlineMode toInlineMode(String modeName) {
0940:                if (INLINE_INNER.equalsIgnoreCase(modeName)) {
0941:                    return INNER_JOIN_MODE;
0942:                } else if (INLINE_OUTER.equalsIgnoreCase(modeName)) {
0943:                    return OUTER_JOIN_MODE;
0944:                } else {
0945:                    throw new IllegalArgumentException(
0946:                            "Unknown inline mode name: " + modeName);
0947:                }
0948:            }
0949:
0950:            public boolean isInner() {
0951:                return getInlineMode() == INNER_JOIN_MODE;
0952:            }
0953:
0954:            public boolean isOuter() {
0955:                return getInlineMode() == OUTER_JOIN_MODE;
0956:            }
0957:
0958:            public void setInlineMode(String childName, InlineMode inlineMode) {
0959:                getChild(childName).setInlineMode(inlineMode);
0960:            }
0961:
0962:            /**
0963:             * Represents entities relationship in ER paradigm
0964:             */
0965:            public static class RelationshipType {
0966:
0967:                public static final RelationshipType ONE_TO_MANY = new RelationshipType(
0968:                        "one_to_many");
0969:                public static final RelationshipType ONE_TO_ONE = new RelationshipType(
0970:                        "one_to_one");
0971:                public static final RelationshipType MANY_TO_ONE = new RelationshipType(
0972:                        "many_to_one");
0973:                public static final RelationshipType MANY_TO_MANY = new RelationshipType(
0974:                        "many_to_many");
0975:
0976:                private String name;
0977:
0978:                protected RelationshipType(String name) {
0979:                    this .name = name;
0980:                }
0981:
0982:                public String toString() {
0983:                    return name;
0984:                }
0985:
0986:                public String getName() {
0987:                    return name;
0988:                }
0989:
0990:                public static RelationshipType name2type(String name) {
0991:                    if (ONE_TO_MANY.getName().equals(name)) {
0992:                        return ONE_TO_MANY;
0993:
0994:                    } else if (ONE_TO_ONE.getName().equals(name)) {
0995:                        return ONE_TO_ONE;
0996:
0997:                    } else if (MANY_TO_ONE.getName().equals(name)) {
0998:                        return MANY_TO_ONE;
0999:                    } else {
1000:                        throw new UnsupportedOperationException(name);
1001:                    }
1002:                }
1003:            }
1004:
1005:            /**
1006:             * Represents query inlining mode. Inlined queries are executed in the same SQL statement 
1007:             * as the main query.
1008:             */
1009:            public static class InlineMode {
1010:
1011:                private String name;
1012:
1013:                protected InlineMode(String name) {
1014:                    this .name = name;
1015:                }
1016:
1017:                public String toString() {
1018:                    return name;
1019:                }
1020:            }
1021:        }
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