/** * Merge changes from the source to the target object. Make the necessary removals and adds and * map key modifications. */ private void mergeChangesIntoObjectWithoutOrder( Object target, ChangeRecord changeRecord, Object source, MergeManager mergeManager) { EISCollectionChangeRecord sdkChangeRecord = (EISCollectionChangeRecord) changeRecord; ContainerPolicy cp = this.getContainerPolicy(); AbstractSession session = mergeManager.getSession(); Object targetCollection = null; if (sdkChangeRecord.getOwner().isNew()) { targetCollection = cp.containerInstance(sdkChangeRecord.getAdds().size()); } else { targetCollection = this.getRealCollectionAttributeValueFromObject(target, session); } Vector removes = sdkChangeRecord.getRemoves(); Vector adds = sdkChangeRecord.getAdds(); Vector changedMapKeys = sdkChangeRecord.getChangedMapKeys(); synchronized (targetCollection) { for (Enumeration stream = removes.elements(); stream.hasMoreElements(); ) { Object removeElement = this.buildRemovedElementFromChangeSet(stream.nextElement(), mergeManager); Object targetElement = null; for (Object iter = cp.iteratorFor(targetCollection); cp.hasNext(iter); ) { targetElement = cp.next(iter, session); if (this.compareElements(targetElement, removeElement, session)) { break; // matching element found - skip the rest of them } } if (targetElement != null) { // a matching element was found, remove it cp.removeFrom(targetElement, targetCollection, session); } } for (Enumeration stream = adds.elements(); stream.hasMoreElements(); ) { Object addElement = this.buildAddedElementFromChangeSet(stream.nextElement(), mergeManager); cp.addInto(addElement, targetCollection, session); } for (Enumeration stream = changedMapKeys.elements(); stream.hasMoreElements(); ) { Object changedMapKeyElement = this.buildAddedElementFromChangeSet(stream.nextElement(), mergeManager); Object originalElement = ((UnitOfWorkImpl) session).getOriginalVersionOfObject(changedMapKeyElement); cp.removeFrom(originalElement, targetCollection, session); cp.addInto(changedMapKeyElement, targetCollection, session); } } // reset the attribute to allow for set method to re-morph changes if the collection is not // being stored directly this.setRealAttributeValueInObject(target, targetCollection); }