Hibernate example source code file (PreUpdateEvent.java)

This example Hibernate source code file (PreUpdateEvent.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

abstractpredatabaseoperationevent, entitypersister, entitypersister, eventsource, eventsource, io, object, object, preupdateevent, preupdateevent, serializable

The Hibernate PreUpdateEvent.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, 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.spi;

import java.io.Serializable;

import org.hibernate.persister.entity.EntityPersister;

/**
 * Represents a <tt>pre-update event, which occurs just prior to
 * performing the update of an entity in the database.
 *
 * @author Gavin King
 * @author Steve Ebersole
 */
public class PreUpdateEvent extends AbstractPreDatabaseOperationEvent {
	private Object[] state;
	private Object[] oldState;

	/**
	 * Constructs an event containing the pertinent information.
	 *
	 * @param entity The entity to be updated.
	 * @param id The id of the entity to use for updating.
	 * @param state The state to be updated.
	 * @param oldState The state of the entity at the time it was loaded from
	 * the database.
	 * @param persister The entity's persister.
	 * @param source The session from which the event originated.
	 */
	public PreUpdateEvent(
			Object entity,
			Serializable id,
			Object[] state,
			Object[] oldState,
			EntityPersister persister,
			EventSource source) {
		super( source, entity, id, persister );
		this.state = state;
		this.oldState = oldState;
	}

	/**
	 * Retrieves the state to be used in the update.
	 *
	 * @return The current state.
	 */
	public Object[] getState() {
		return state;
	}

	/**
	 * The old state of the entity at the time it was last loaded from the
	 * database; can be null in the case of detached entities.
	 *
	 * @return The loaded state, or null.
	 */
	public Object[] getOldState() {
		return oldState;
	}
}