/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a full listing
* of individual contributors.
* 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, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 2003,
*
* Arjuna Technologies Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: ContextManager.java,v 1.4 2005/03/10 15:37:14 nmcl Exp $
*/
package com.arjuna.mwlabs.wst.at.local;
import com.arjuna.mw.wstx.logging.wstxLogger;
import com.arjuna.mw.wsas.activity.*;
import com.arjuna.wst.*;
import com.arjuna.mw.wst.TxContext;
import java.util.*;
/**
* @message com.arjuna.mwlabs.wst.at.local.ContextManager_1 [com.arjuna.mwlabs.wst.at.local.ContextManager_1] - One context was null!
*/
public class ContextManager
{
public static final ContextManager contextManager ()
{
return _instance;
}
public final void initialise (LocalContextFactoryImple factory)
{
_factory = factory;
}
public final TxContext suspend () throws SystemException
{
ActivityHierarchy wstxHier = null;
try
{
wstxHier = _factory.coordinatorManager().suspend();
}
catch (com.arjuna.mw.wsas.exceptions.SystemException ex)
{
throw new SystemException(ex.toString());
}
TxContext txCtx = (TxContext) _threadTxData.get();
if (txCtx != null)
{
_threadTxData.set(null) ;
}
if ((txCtx != null) && (wstxHier != null)) // should be equal!
{
_contextMapper.put(txCtx, wstxHier);
return txCtx;
}
else
{
if ((txCtx == null) && (wstxHier == null))
return null;
else
{
throw new SystemException(wstxLogger.log_mesg.getString("com.arjuna.mwlabs.wst.at.local.ContextManager_1"));
}
}
}
public final TxContext currentTransaction () throws SystemException
{
return (TxContext) _threadTxData.get();
}
// resume overwrites. Should we check first a la JTA?
public final void resume (TxContext tx) throws UnknownTransactionException, SystemException
{
ActivityHierarchy wstxHier = null;
boolean imported = true;
if (tx != null)
{
wstxHier = (ActivityHierarchy) _contextMapper.remove(tx);
if (wstxHier == null)
imported = false;
}
_threadTxData.set(tx);
try
{
if (imported)
_factory.coordinatorManager().resume(wstxHier);
}
catch (com.arjuna.mw.wsas.exceptions.InvalidActivityException ex)
{
throw new UnknownTransactionException(ex.toString());
}
catch (com.arjuna.mw.wsas.exceptions.SystemException ex)
{
throw new SystemException(ex.toString());
}
}
public final void tidyup ()
{
TxContext txCtx = (TxContext) _threadTxData.get();
if (txCtx != null)
{
_threadTxData.set(null) ;
_contextMapper.remove(txCtx);
}
}
protected ContextManager ()
{
}
private static ThreadLocal _threadTxData = new ThreadLocal();
private static HashMap _contextMapper = new HashMap();
private static LocalContextFactoryImple _factory = null;
private static ContextManager _instance = new ContextManager();
}