/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.hibernate.search.engine.impl;
import java.util.Collection;
import java.util.Map;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.proxy.HibernateProxy;
import org.hibernate.proxy.LazyInitializer;
import org.hibernate.search.spi.InstanceInitializer;
/**
* This EntityInitializer is relative to a specific Hibernate Session,
* so it's able to attach detached collections to it's Session.
*
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2011 Red Hat Inc.
*/
public class HibernateSessionLoadingInitializer extends HibernateStatelessInitializer implements InstanceInitializer {
private final SessionImplementor hibernateSession;
public HibernateSessionLoadingInitializer(SessionImplementor hibernateSession) {
this.hibernateSession = hibernateSession;
}
@Override
public Object unproxy(Object instance) {
if ( instance instanceof HibernateProxy ) {
final HibernateProxy proxy = (HibernateProxy) instance;
final LazyInitializer lazyInitializer = proxy.getHibernateLazyInitializer();
Object initialized = lazyInitializer.getImplementation( hibernateSession );
if ( initialized != null ) {
return initialized;
}
else {
// This is the case in which the proxy was created by a different session.
// unproxyAndReassociate is the ultimate bomb,
// able to deal with a Session change:
return hibernateSession.getPersistenceContext().unproxyAndReassociate( proxy );
}
}
return instance;
}
@Override
public <T> Collection<T> initializeCollection(Collection<T> value) {
//No action needed
return value;
}
@Override
public <K,V> Map<K,V> initializeMap(Map<K,V> value) {
//No action needed
return value;
}
}