/** 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);
}
/** Remove stuff from an unordered collection. */
private void simpleRemoveFromCollectionChangeRecordWithoutOrder(
Object referenceKey,
Object changeSetToRemove,
ObjectChangeSet changeSet,
AbstractSession session) {
EISCollectionChangeRecord changeRecord =
(EISCollectionChangeRecord) changeSet.getChangesForAttributeNamed(this.getAttributeName());
if (changeRecord == null) {
changeRecord =
new EISCollectionChangeRecord(
changeSet, this.getAttributeName(), this.getDatabaseMapping());
changeSet.addChange(changeRecord);
}
changeRecord.simpleRemoveChangeSet(changeSetToRemove);
}
/** 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: Get a value from the object and set that in the respective field of the row. */
public void writeFromObjectIntoRowWithChangeRecord(
ChangeRecord changeRecord, AbstractRecord record, AbstractSession session) {
if (isReadOnly()) {
return;
}
ObjectChangeSet changeSet =
(ObjectChangeSet) ((ObjectReferenceChangeRecord) changeRecord).getNewValue();
Object referenceObject = changeSet.getUnitOfWorkClone();
if (referenceObject == null) {
return;
}
Ref ref =
((ObjectRelationalDataTypeDescriptor) getReferenceDescriptor())
.getRef(referenceObject, session);
record.put(getField(), ref);
}
/**
* INTERNAL: Get a value from the object and set that in the respective field of the row. If the
* mapping id target foreign key, you must only write the type into the roe, the rest will be
* updated when the object itself is written
*/
@Override
public void writeFromObjectIntoRowWithChangeRecord(
ChangeRecord changeRecord, AbstractRecord record, AbstractSession session) {
if (isReadOnly()) {
return;
}
ObjectChangeSet changeSet =
(ObjectChangeSet) ((ObjectReferenceChangeRecord) changeRecord).getNewValue();
if (changeSet == null) {
writeFromNullObjectIntoRow(record);
} else {
Object referenceObject = changeSet.getUnitOfWorkClone();
if (isForeignKeyRelationship()) {
Enumeration sourceFields = getForeignKeyFields().elements();
ClassDescriptor descriptor = session.getDescriptor(referenceObject.getClass());
while (sourceFields.hasMoreElements()) {
DatabaseField sourceKey = (DatabaseField) sourceFields.nextElement();
String targetQueryKey = (String) getSourceToTargetQueryKeyNames().get(sourceKey);
DatabaseField targetKeyField =
descriptor.getObjectBuilder().getFieldForQueryKeyName(targetQueryKey);
if (targetKeyField == null) {
throw DescriptorException.variableOneToOneMappingIsNotDefinedProperly(
this, descriptor, targetQueryKey);
}
Object referenceValue =
descriptor
.getObjectBuilder()
.extractValueFromObjectForField(referenceObject, targetKeyField, session);
record.put(sourceKey, referenceValue);
}
}
if (getTypeField() != null) {
record.put(getTypeField(), getTypeForImplementor(referenceObject.getClass()));
}
}
}
/**
* INTERNAL: Build and return the change record that results from comparing the two collection
* attributes.
*/
public ChangeRecord compareForChange(
Object clone, Object backup, ObjectChangeSet owner, AbstractSession session) {
ContainerPolicy cp = this.getContainerPolicy();
Object cloneCollection = this.getRealCollectionAttributeValueFromObject(clone, session);
Object backupCollection = null;
if (owner.isNew()) {
backupCollection = cp.containerInstance(1);
} else {
backupCollection = this.getRealCollectionAttributeValueFromObject(backup, session);
}
if (cp.hasOrder()) {
return this.compareAttributeValuesForChangeWithOrder(
cloneCollection, backupCollection, owner, session);
} else {
return this.compareAttributeValuesForChangeWithoutOrder(
cloneCollection, backupCollection, owner, session);
}
}
/** INTERNAL: Build and return a change set for the specified element. */
public Object buildChangeSet(Object element, ObjectChangeSet owner, AbstractSession session) {
ObjectBuilder objectBuilder = session.getDescriptor(element).getObjectBuilder();
return objectBuilder.createObjectChangeSet(
element, (UnitOfWorkChangeSet) owner.getUOWChangeSet(), session);
}
