/**
* Initialize the role of the collection.
*
* @param collection The collection to be updated by reachability.
* @param type The type of the collection.
* @param entity The owner of the collection.
* @param session The session from which this request originates
*/
public static void processReachableCollection(
PersistentCollection collection,
CollectionType type,
Object entity,
SessionImplementor session) {
collection.setOwner(entity);
CollectionEntry ce = session.getPersistenceContext().getCollectionEntry(collection);
if (ce == null) {
// refer to comment in StatefulPersistenceContext.addCollection()
throw new HibernateException(
"Found two representations of same collection: " + type.getRole());
}
// The CollectionEntry.isReached() stuff is just to detect any silly users
// who set up circular or shared references between/to collections.
if (ce.isReached()) {
// We've been here before
throw new HibernateException("Found shared references to a collection: " + type.getRole());
}
ce.setReached(true);
SessionFactoryImplementor factory = session.getFactory();
CollectionPersister persister = factory.getCollectionPersister(type.getRole());
ce.setCurrentPersister(persister);
ce.setCurrentKey(
type.getKeyOfOwner(entity, session)); // TODO: better to pass the id in as an argument?
if (LOG.isDebugEnabled()) {
if (collection.wasInitialized())
LOG.debugf(
"Collection found: %s, was: %s (initialized)",
MessageHelper.collectionInfoString(persister, ce.getCurrentKey(), factory),
MessageHelper.collectionInfoString(
ce.getLoadedPersister(), ce.getLoadedKey(), factory));
else
LOG.debugf(
"Collection found: %s, was: %s (uninitialized)",
MessageHelper.collectionInfoString(persister, ce.getCurrentKey(), factory),
MessageHelper.collectionInfoString(
ce.getLoadedPersister(), ce.getLoadedKey(), factory));
}
prepareCollectionForUpdate(collection, ce, factory);
}
