/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.revisioninfo;
import java.io.Serializable;
import java.util.Date;
import org.hibernate.MappingException;
import org.hibernate.Session;
import org.hibernate.envers.EntityTrackingRevisionListener;
import org.hibernate.envers.RevisionListener;
import org.hibernate.envers.RevisionType;
import org.hibernate.envers.entities.PropertyData;
import org.hibernate.envers.synchronization.SessionCacheCleaner;
import org.hibernate.envers.tools.reflection.ReflectionTools;
import org.hibernate.property.Setter;
/**
* @author Adam Warski (adam at warski dot org)
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class DefaultRevisionInfoGenerator implements RevisionInfoGenerator {
private final String revisionInfoEntityName;
private final RevisionListener listener;
private final Setter revisionTimestampSetter;
private final boolean timestampAsDate;
private final Class<?> revisionInfoClass;
private final SessionCacheCleaner sessionCacheCleaner;
public DefaultRevisionInfoGenerator(String revisionInfoEntityName, Class<?> revisionInfoClass,
Class<? extends RevisionListener> listenerClass,
PropertyData revisionInfoTimestampData,
boolean timestampAsDate) {
this.revisionInfoEntityName = revisionInfoEntityName;
this.revisionInfoClass = revisionInfoClass;
this.timestampAsDate = timestampAsDate;
revisionTimestampSetter = ReflectionTools.getSetter(revisionInfoClass, revisionInfoTimestampData);
if (!listenerClass.equals(RevisionListener.class)) {
// This is not the default value.
try {
listener = listenerClass.newInstance();
} catch (InstantiationException e) {
throw new MappingException(e);
} catch (IllegalAccessException e) {
throw new MappingException(e);
}
} else {
// Default listener - none
listener = null;
}
sessionCacheCleaner = new SessionCacheCleaner();
}
public void saveRevisionData(Session session, Object revisionData) {
session.save(revisionInfoEntityName, revisionData);
sessionCacheCleaner.scheduleAuditDataRemoval(session, revisionData);
}
public Object generate() {
Object revisionInfo;
try {
revisionInfo = revisionInfoClass.newInstance();
} catch (Exception e) {
throw new RuntimeException(e);
}
long timestamp = System.currentTimeMillis();
revisionTimestampSetter.set(revisionInfo, timestampAsDate ? new Date(timestamp) : timestamp, null);
if (listener != null) {
listener.newRevision(revisionInfo);
}
return revisionInfo;
}
public void entityChanged(Class entityClass, String entityName, Serializable entityId, RevisionType revisionType,
Object revisionInfo) {
if (listener instanceof EntityTrackingRevisionListener) {
((EntityTrackingRevisionListener) listener).entityChanged(entityClass, entityName, entityId, revisionType,
revisionInfo);
}
}
}