org.hibernate.envers.internal.synchronization.EntityChangeNotifier Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, 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.envers.internal.synchronization;
import java.io.Serializable;
import org.hibernate.Session;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.internal.revisioninfo.RevisionInfoGenerator;
import org.hibernate.envers.internal.synchronization.work.AuditWorkUnit;
import org.hibernate.envers.internal.synchronization.work.PersistentCollectionChangeWorkUnit;
import org.hibernate.envers.internal.tools.EntityTools;
/**
* Notifies {@link RevisionInfoGenerator} about changes made in the current revision.
*
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class EntityChangeNotifier {
private final RevisionInfoGenerator revisionInfoGenerator;
private final SessionImplementor sessionImplementor;
public EntityChangeNotifier(RevisionInfoGenerator revisionInfoGenerator, SessionImplementor sessionImplementor) {
this.revisionInfoGenerator = revisionInfoGenerator;
this.sessionImplementor = sessionImplementor;
}
/**
* Notifies {@link RevisionInfoGenerator} about changes made in the current revision. Provides information
* about modified entity class, entity name and its id, as well as {@link org.hibernate.envers.RevisionType}
* and revision log entity.
*
* @param session Active session.
* @param currentRevisionData Revision log entity.
* @param vwu Performed work unit.
*/
public void entityChanged(Session session, Object currentRevisionData, AuditWorkUnit vwu) {
Serializable entityId = vwu.getEntityId();
if ( entityId instanceof PersistentCollectionChangeWorkUnit.PersistentCollectionChangeWorkUnitId ) {
// Notify about a change in collection owner entity.
entityId = ((PersistentCollectionChangeWorkUnit.PersistentCollectionChangeWorkUnitId) entityId).getOwnerId();
}
final Class entityClass = EntityTools.getEntityClass( sessionImplementor, session, vwu.getEntityName() );
revisionInfoGenerator.entityChanged(
entityClass,
vwu.getEntityName(),
entityId,
vwu.getRevisionType(),
currentRevisionData
);
}
}