/** INTERNAL: Build and return a new element based on the change set. */
public Object buildRemovedElementFromChangeSet(Object changeSet, MergeManager mergeManager) {
ObjectChangeSet objectChangeSet = (ObjectChangeSet) changeSet;
if (!mergeManager.shouldMergeChangesIntoDistributedCache()) {
mergeManager.registerRemovedNewObjectIfRequired(objectChangeSet.getUnitOfWorkClone());
}
return this.buildElementFromChangeSet(changeSet, mergeManager);
}
/** INTERNAL: Build and return a new element based on the change set. */
public Object buildAddedElementFromChangeSet(Object changeSet, MergeManager mergeManager) {
ObjectChangeSet objectChangeSet = (ObjectChangeSet) changeSet;
if (this.shouldMergeCascadeParts(mergeManager)) {
Object targetElement = null;
if (mergeManager.shouldMergeChangesIntoDistributedCache()) {
targetElement =
objectChangeSet.getTargetVersionOfSourceObject(mergeManager.getSession(), true);
} else {
targetElement = objectChangeSet.getUnitOfWorkClone();
}
mergeManager.mergeChanges(targetElement, objectChangeSet);
}
return this.buildElementFromChangeSet(changeSet, mergeManager);
}
/** INTERNAL: Build and return a new element based on the specified element. */
public Object buildElementFromElement(Object element, MergeManager mergeManager) {
if (this.shouldMergeCascadeParts(mergeManager)) {
ObjectChangeSet objectChangeSet = null;
if (mergeManager.getSession().isUnitOfWork()) {
UnitOfWorkChangeSet uowChangeSet =
(UnitOfWorkChangeSet)
((UnitOfWorkImpl) mergeManager.getSession()).getUnitOfWorkChangeSet();
if (uowChangeSet != null) {
objectChangeSet = (ObjectChangeSet) uowChangeSet.getObjectChangeSetForClone(element);
}
}
Object mergeElement = mergeManager.getObjectToMerge(element);
mergeManager.mergeChanges(mergeElement, objectChangeSet);
}
return mergeManager.getTargetVersionOfSourceObject(element);
}
/**
* 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);
}
/**
* INTERNAL: Merge changes from the source to the target object. Simply replace the entire target
* collection.
*/
public void mergeIntoObject(
Object target, boolean isTargetUnInitialized, Object source, MergeManager mergeManager) {
ContainerPolicy cp = this.getContainerPolicy();
AbstractSession session = mergeManager.getSession();
Object sourceCollection = this.getRealCollectionAttributeValueFromObject(source, session);
Object targetCollection = cp.containerInstance(cp.sizeFor(sourceCollection));
for (Object iter = cp.iteratorFor(sourceCollection); cp.hasNext(iter); ) {
Object targetElement = this.buildElementFromElement(cp.next(iter, session), mergeManager);
cp.addInto(targetElement, 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);
}
/**
* Merge changes from the source to the target object. Simply replace the entire target
* collection.
*/
private void mergeChangesIntoObjectWithOrder(
Object target, ChangeRecord changeRecord, Object source, MergeManager mergeManager) {
ContainerPolicy cp = this.getContainerPolicy();
AbstractSession session = mergeManager.getSession();
Vector changes = ((EISOrderedCollectionChangeRecord) changeRecord).getNewCollection();
Object targetCollection = cp.containerInstance(changes.size());
for (Enumeration stream = changes.elements(); stream.hasMoreElements(); ) {
Object targetElement =
this.buildAddedElementFromChangeSet(stream.nextElement(), mergeManager);
cp.addInto(targetElement, 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);
}
/** Build and return a new element based on the change set. */
protected Object buildElementFromChangeSet(Object changeSet, MergeManager mergeManager) {
return ((ObjectChangeSet) changeSet).getTargetVersionOfSourceObject(mergeManager.getSession());
}