org.hibernate.envers.event.spi.EnversPostUpdateEventListenerImpl Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 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.envers.event.spi;
import org.hibernate.envers.configuration.spi.AuditConfiguration;
import org.hibernate.envers.internal.synchronization.AuditProcess;
import org.hibernate.envers.internal.synchronization.work.AuditWorkUnit;
import org.hibernate.envers.internal.synchronization.work.ModWorkUnit;
import org.hibernate.event.spi.PostUpdateEvent;
import org.hibernate.event.spi.PostUpdateEventListener;
import org.hibernate.persister.entity.EntityPersister;
/**
* Envers-specific entity (post) update event listener
*
* @author Adam Warski (adam at warski dot org)
* @author HernпїЅn Chanfreau
* @author Steve Ebersole
*/
public class EnversPostUpdateEventListenerImpl extends BaseEnversEventListener implements PostUpdateEventListener {
protected EnversPostUpdateEventListenerImpl(AuditConfiguration enversConfiguration) {
super( enversConfiguration );
}
@Override
public void onPostUpdate(PostUpdateEvent event) {
final String entityName = event.getPersister().getEntityName();
if ( getAuditConfiguration().getEntCfg().isVersioned( entityName ) ) {
checkIfTransactionInProgress( event.getSession() );
final AuditProcess auditProcess = getAuditConfiguration().getSyncManager().get( event.getSession() );
final Object[] newDbState = postUpdateDBState( event );
final AuditWorkUnit workUnit = new ModWorkUnit(
event.getSession(),
event.getPersister().getEntityName(),
getAuditConfiguration(),
event.getId(),
event.getPersister(),
newDbState,
event.getOldState()
);
auditProcess.addWorkUnit( workUnit );
if ( workUnit.containsWork() ) {
generateBidirectionalCollectionChangeWorkUnits(
auditProcess,
event.getPersister(),
entityName,
newDbState,
event.getOldState(),
event.getSession()
);
}
}
}
private Object[] postUpdateDBState(PostUpdateEvent event) {
final Object[] newDbState = event.getState().clone();
if ( event.getOldState() != null ) {
final EntityPersister entityPersister = event.getPersister();
for ( int i = 0; i < entityPersister.getPropertyNames().length; ++i ) {
if ( !entityPersister.getPropertyUpdateability()[i] ) {
// Assuming that PostUpdateEvent#getOldState() returns database state of the record before modification.
// Otherwise, we would have to execute SQL query to be sure of @Column(updatable = false) column value.
newDbState[i] = event.getOldState()[i];
}
}
}
return newDbState;
}
@Override
public boolean requiresPostCommitHanding(EntityPersister persister) {
return getAuditConfiguration().getEntCfg().isVersioned( persister.getEntityName() );
}
}