/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb;
import java.util.HashMap;
import javax.transaction.Transaction;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import org.jboss.tm.TransactionLocal;
/**
* @deprecated this class was useful only for Instance Per Transaction containers and was used to check whether
* the instance is associated with the tx. There is org.jboss.ejb.plugins.PerTxEntityInstanceCache which is
* a per tx implementation of org.jboss.ejb.EntityCache which should be used with IPT containers.
* (alex@jboss.org)
*
* This class provides a way to find out what entities of a certain type that are contained in
* within a transaction. It is attached to a specific instance of a container.
*<no longer - global only holds possibly dirty> This class interfaces with the static GlobalTxEntityMap. EntitySynchronizationInterceptor
* registers tx/entity pairs through this class.
* Used in EntitySynchronizationInterceptor.
*
* @author <a href="bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 81030 $
*
* Revisions:
*
* <p><b>Revisions:</b><br>
* <p><b>2001/08/06: billb</b>
* <ol>
* <li>Got rid of disassociate and added a javax.transaction.Synchronization. The sync will clean up the map now.
* <li>This class now interacts with GlobalTxEntityMap available.
* </ol>
*/
public class TxEntityMap
{
protected TransactionLocal m_map = new TransactionLocal();
/**
* associate entity with transaction
*/
public void associate(Transaction tx, EntityEnterpriseContext entity)
throws RollbackException, SystemException
{
HashMap entityMap = (HashMap) m_map.get(tx);
if(entityMap == null)
{
entityMap = new HashMap();
m_map.set(tx, entityMap);
}
//EntityContainer.getGlobalTxEntityMap().associate(tx, entity);
entityMap.put(entity.getCacheKey(), entity);
}
public EntityEnterpriseContext getCtx(Transaction tx, Object key)
{
HashMap entityMap = (HashMap) m_map.get(tx);
if(entityMap == null) return null;
return (EntityEnterpriseContext) entityMap.get(key);
}
public EntityEnterpriseContext getCtx(Object key)
{
HashMap entityMap = (HashMap) m_map.get();
if(entityMap == null) return null;
return (EntityEnterpriseContext) entityMap.get(key);
}
}