/*
* 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) 2002, 2003, 2004,
*
* Arjuna Technologies Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: VolatileTwoPhaseCommitParticipant.java,v 1.1.2.2 2004/08/09 12:34:24 nmcl Exp $
*/
package com.arjuna.mwlabs.wst.at.participants;
import com.arjuna.wst.Volatile2PCParticipant;
import com.arjuna.mw.wscf.model.twophase.common.*;
import com.arjuna.mw.wscf.model.twophase.participants.*;
import com.arjuna.mw.wscf.model.twophase.exceptions.*;
import com.arjuna.mw.wscf.exceptions.*;
import com.arjuna.mw.wsas.exceptions.SystemException;
import com.arjuna.mw.wsas.exceptions.WrongStateException;
/**
* @author Mark Little (mark.little@arjuna.com)
* @version $Id: VolatileTwoPhaseCommitParticipant.java,v 1.1.2.2 2004/08/09
* 12:34:24 nmcl Exp $
* @since 1.0.
*/
public class VolatileTwoPhaseCommitParticipant implements Synchronization
{
public VolatileTwoPhaseCommitParticipant (Volatile2PCParticipant resource)
{
_resource = resource;
}
/**
* The transaction that the instance is enrolled with is about to commit.
*
* @exception SystemException
* Thrown if any error occurs. This will cause the
* transaction to roll back.
*/
public void beforeCompletion () throws SystemException
{
try
{
if (_resource != null)
{
// com.arjuna.mw.wst.vote.Vote vt = _resource.prepare();
com.arjuna.wst.Vote vt = _resource.prepare();
if (vt instanceof com.arjuna.wst.ReadOnly)
_readonly = true;
else
{
if (vt instanceof com.arjuna.wst.Prepared)
{
// do nothing
}
else
throw new SystemException();
}
}
else
throw new SystemException();
}
catch (SystemException ex)
{
throw ex;
}
catch (Exception ex)
{
throw new SystemException(ex.toString());
}
}
/**
* The transaction that the instance is enrolled with has completed and the
* state in which is completed is passed as a parameter.
*
* @param CompletionStatus
* cs The state in which the transaction completed.
*
* @exception SystemException
* Thrown if any error occurs. This has no affect on the
* outcome of the transaction.
*/
public void afterCompletion (int status) throws SystemException
{
if (!_readonly)
{
try
{
switch (status)
{
case CoordinationResult.CONFIRMED:
confirm();
break;
default:
cancel();
break;
}
}
catch (SystemException ex)
{
throw ex;
}
catch (Exception ex)
{
throw new SystemException(ex.toString());
}
}
}
private final void confirm () throws InvalidParticipantException,
WrongStateException, HeuristicHazardException,
HeuristicMixedException, HeuristicCancelException, SystemException
{
if (_resource != null)
{
try
{
_resource.commit();
}
// catch (com.arjuna.mw.wst.exceptions.WrongStateException ex)
catch (com.arjuna.wst.WrongStateException ex)
{
throw new WrongStateException(ex.toString());
}
/*
* catch (com.arjuna.mw.wst.exceptions.HeuristicHazardException ex) {
* throw new HeuristicHazardException(ex.toString()); } catch
* (com.arjuna.mw.wst.exceptions.HeuristicMixedException ex) { throw
* new HeuristicMixedException(ex.toString()); } catch
* (com.arjuna.mw.wst.exceptions.HeuristicRollbackException ex) {
* throw new HeuristicCancelException(ex.toString()); }
*/
// catch (com.arjuna.mw.wst.exceptions.SystemException ex)
catch (com.arjuna.wst.SystemException ex)
{
throw new SystemException(ex.toString());
}
}
else
throw new InvalidParticipantException();
}
private final void cancel () throws InvalidParticipantException,
WrongStateException, HeuristicHazardException,
HeuristicMixedException, HeuristicConfirmException, SystemException
{
if (_resource != null)
{
try
{
_resource.rollback();
}
// catch (com.arjuna.mw.wst.exceptions.WrongStateException ex)
catch (com.arjuna.wst.WrongStateException ex)
{
throw new WrongStateException(ex.toString());
}
/*
* catch (com.arjuna.mw.wst.exceptions.HeuristicHazardException ex) {
* throw new HeuristicHazardException(ex.toString()); } catch
* (com.arjuna.mw.wst.exceptions.HeuristicMixedException ex) { throw
* new HeuristicMixedException(ex.toString()); } catch
* (com.arjuna.mw.wst.exceptions.HeuristicCommitException ex) {
* throw new HeuristicConfirmException(ex.toString()); }
*/
// catch (com.arjuna.mw.wst.exceptions.SystemException ex)
catch (com.arjuna.wst.SystemException ex)
{
throw new SystemException(ex.toString());
}
}
else
throw new InvalidParticipantException();
}
private Volatile2PCParticipant _resource = null;
private boolean _readonly = false;
}