Package org.hibernate.event.internal

Source Code of org.hibernate.event.internal.DefaultPostLoadEventListener

/*
* 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
* Boston, MA  02110-1301  USA
*/
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:<ul>
* <li>Call {@link Lifecycle} interface if necessary</li>
* <li>Perform needed {@link EntityEntry#getLockMode()} related processing</li>
* </ul>
*
* @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() );
    }

  }
}
TOP

Related Classes of org.hibernate.event.internal.DefaultPostLoadEventListener

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.