org.hibernate.event.spi.EntityCopyObserver Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, 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 org.hibernate.event.spi.EventSource;
/**
* An observer for detection of multiple entity representations for a persistent entity being merged.
*
* @author Gail Badner
*/
public interface EntityCopyObserver {
/**
* Called when more than one representation of the same persistent entity is being merged.
*
* @param managedEntity The managed entity in the persistence context (the merge result).
* @param mergeEntity1 A managed or detached entity being merged; must be non-null.
* @param mergeEntity2 A different managed or detached entity being merged; must be non-null.
* @param session The session.
*/
void entityCopyDetected(Object managedEntity, Object mergeEntity1, Object mergeEntity2, EventSource session);
/**
* Called when the top-level merge operation is complete.
*
* @param session The session
*/
void topLevelMergeComplete(EventSource session);
/**
* Called to clear any data stored in this EntityCopyObserver.
*/
void clear();
}