org.hibernate.event.internal.DefaultPostLoadEventListener Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* 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, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY 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
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
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*/
package org.hibernate.event.internal;
import org.hibernate.AssertionFailure;
import org.hibernate.LockMode;
import org.hibernate.action.internal.EntityIncrementVersionProcess;
import org.hibernate.action.internal.EntityVerifyVersionProcess;
import org.hibernate.classic.Lifecycle;
import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.event.spi.PostLoadEvent;
import org.hibernate.event.spi.PostLoadEventListener;
import org.hibernate.persister.entity.EntityPersister;
/**
* We do 2 things here:
* - Call {@link Lifecycle} interface if necessary
* - Perform needed {@link EntityEntry#getLockMode()} related processing
*
*
* @author Gavin King
* @author Steve Ebersole
*/
public class DefaultPostLoadEventListener implements PostLoadEventListener {
@Override
public void onPostLoad(PostLoadEvent event) {
final Object entity = event.getEntity();
final EntityEntry entry = event.getSession().getPersistenceContext().getEntry( entity );
if ( entry == null ) {
throw new AssertionFailure( "possible non-threadsafe access to the session" );
}
final LockMode lockMode = entry.getLockMode();
if ( LockMode.PESSIMISTIC_FORCE_INCREMENT.equals( lockMode ) ) {
final EntityPersister persister = entry.getPersister();
final Object nextVersion = persister.forceVersionIncrement(
entry.getId(),
entry.getVersion(),
event.getSession()
);
entry.forceLocked( entity, nextVersion );
}
else if ( LockMode.OPTIMISTIC_FORCE_INCREMENT.equals( lockMode ) ) {
final EntityIncrementVersionProcess incrementVersion = new EntityIncrementVersionProcess( entity, entry );
event.getSession().getActionQueue().registerProcess( incrementVersion );
}
else if ( LockMode.OPTIMISTIC.equals( lockMode ) ) {
final EntityVerifyVersionProcess verifyVersion = new EntityVerifyVersionProcess( entity, entry );
event.getSession().getActionQueue().registerProcess( verifyVersion );
}
if ( event.getPersister().implementsLifecycle() ) {
//log.debug( "calling onLoad()" );
( (Lifecycle) event.getEntity() ).onLoad( event.getSession(), event.getId() );
}
}
}