final CollectionAliases descriptor,
final ResultSet rs,
final SessionImplementor session)
throws HibernateException, SQLException {
final PersistenceContext persistenceContext = session.getPersistenceContext();
final Serializable collectionRowKey = (Serializable) persister.readKey(
rs,
descriptor.getSuffixedKeyAliases(),
session
);
if ( collectionRowKey != null ) {
// we found a collection element in the result set
if ( log.isDebugEnabled() ) {
log.debug(
"found row of collection: " +
MessageHelper.collectionInfoString( persister, collectionRowKey, getFactory() )
);
}
Object owner = optionalOwner;
if ( owner == null ) {
owner = persistenceContext.getCollectionOwner( collectionRowKey, persister );
if ( owner == null ) {
//TODO: This is assertion is disabled because there is a bug that means the
// original owner of a transient, uninitialized collection is not known
// if the collection is re-referenced by a different object associated
// with the current Session
//throw new AssertionFailure("bug loading unowned collection");
}
}
PersistentCollection rowCollection = persistenceContext.getLoadContexts()
.getCollectionLoadContext( rs )
.getLoadingCollection( persister, collectionRowKey );
if ( rowCollection != null ) {
rowCollection.readFrom( rs, persister, descriptor, owner );
}
}
else if ( optionalKey != null ) {
// we did not find a collection element in the result set, so we
// ensure that a collection is created with the owner's identifier,
// since what we have is an empty collection
if ( log.isDebugEnabled() ) {
log.debug(
"result set contains (possibly empty) collection: " +
MessageHelper.collectionInfoString( persister, optionalKey, getFactory() )
);
}
persistenceContext.getLoadContexts()
.getCollectionLoadContext( rs )
.getLoadingCollection( persister, optionalKey ); // handle empty collection
}
// else no collection element, but also no owner