/*
* 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.synchronization;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.hibernate.action.AfterTransactionCompletionProcess;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.envers.revisioninfo.RevisionInfoGenerator;
import org.hibernate.Transaction;
import org.hibernate.event.EventSource;
/**
* @author Adam Warski (adam at warski dot org)
*/
public class AuditProcessManager {
private final Map<Transaction, AuditProcess> auditProcesses;
private final RevisionInfoGenerator revisionInfoGenerator;
public AuditProcessManager(RevisionInfoGenerator revisionInfoGenerator) {
auditProcesses = new ConcurrentHashMap<Transaction, AuditProcess>();
this.revisionInfoGenerator = revisionInfoGenerator;
}
public AuditProcess get(EventSource session) {
final Transaction transaction = session.getTransaction();
AuditProcess auditProcess = auditProcesses.get(transaction);
if (auditProcess == null) {
// No worries about registering a transaction twice - a transaction is single thread
auditProcess = new AuditProcess(revisionInfoGenerator, session);
auditProcesses.put(transaction, auditProcess);
session.getActionQueue().registerProcess(auditProcess);
session.getActionQueue().registerProcess(new AfterTransactionCompletionProcess() {
public void doAfterTransactionCompletion(boolean success, SessionImplementor session) {
auditProcesses.remove(transaction);
}
});
}
return auditProcess;
}
}