OnLockVisitorpublic class OnLockVisitor extends ReattachVisitor | When a transient entity is passed to lock(), we must inspect all its collections and
1. associate any uninitialized PersistentCollections with this session
2. associate any initialized PersistentCollections with this session, using the
existing snapshot
3. throw an exception for each "new" collection |
| Methods Summary |
|---|
| java.lang.Object | processCollection(java.lang.Object collection, org.hibernate.type.CollectionType type)
SessionImplementor session = getSession();
CollectionPersister persister = session.getFactory().getCollectionPersister( type.getRole() );
if ( collection == null ) {
//do nothing
}
else if ( collection instanceof PersistentCollection ) {
PersistentCollection persistentCollection = ( PersistentCollection ) collection;
if ( persistentCollection.setCurrentSession( session ) ) {
if ( isOwnerUnchanged( persistentCollection, persister, extractCollectionKeyFromOwner( persister ) ) ) {
// a "detached" collection that originally belonged to the same entity
if ( persistentCollection.isDirty() ) {
throw new HibernateException( "reassociated object has dirty collection" );
}
reattachCollection( persistentCollection, type );
}
else {
// a "detached" collection that belonged to a different entity
throw new HibernateException( "reassociated object has dirty collection reference" );
}
}
else {
// a collection loaded in the current session
// can not possibly be the collection belonging
// to the entity passed to update()
throw new HibernateException( "reassociated object has dirty collection reference" );
}
}
else {
// brand new collection
//TODO: or an array!! we can't lock objects with arrays now??
throw new HibernateException( "reassociated object has dirty collection reference (or an array)" );
}
return null;
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