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/*
* 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) 1998, 1999, 2000, 2001,
*
* Arjuna Solutions Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: CadaverLockRecord.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.ats.internal.txoj.abstractrecords;
import java.io.PrintWriter;
import com.arjuna.ats.arjuna.ObjectModel;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.ats.arjuna.coordinator.AbstractRecord;
import com.arjuna.ats.arjuna.coordinator.BasicAction;
import com.arjuna.ats.arjuna.coordinator.RecordType;
import com.arjuna.ats.arjuna.coordinator.TwoPhaseOutcome;
import com.arjuna.ats.arjuna.exceptions.FatalError;
import com.arjuna.ats.txoj.LockManager;
import com.arjuna.ats.txoj.lockstore.LockStore;
import com.arjuna.ats.txoj.logging.txojLogger;
/*
*
* Cadaver Lock Record Class Implementation
*
* Instances of this record class are created by LockManager if the
* object goes out of scope prior to the end of a manipulating action.
* The intention is that the operations of this class will clean up
* those locks that get left set as the object goes out of scope but
* which must remain held until the action ends otherwise serialisability
* is compromised
*
*/
public class CadaverLockRecord extends LockRecord
{
public CadaverLockRecord (LockStore store, LockManager lm, BasicAction currAct)
{
super(lm, currAct);
cadaverLockStore = store;
objectTypeName = new String(lm.type());
if (lm.getObjectModel() == ObjectModel.SINGLE)
{
doRelease = false;
}
else
doRelease = true;
if (txojLogger.logger.isTraceEnabled())
{
txojLogger.logger.trace("CadaverLockRecord::CadaverLockRecord("+store+
", "+((lm != null) ? lm.get_uid() : Uid.nullUid())+")");
}
}
/*
* Public virtual functions. These are all re-implementations of inherited
* functions
*/
public boolean propagateOnAbort ()
{
return true;
}
/*
* Atomic action controlled functions. These functions create an instance
* of CadaverLockManager to handle the lock manipulation that is needed and
* then throw it away when done.
*/
public int nestedAbort ()
{
if (txojLogger.logger.isTraceEnabled())
{
txojLogger.logger.trace("CadaverLockRecord::nestedAbort() for "+order());
}
if (doRelease)
{
CadaverLockManager manager = new CadaverLockManager(order(), objectTypeName);
if (super.actionHandle == null)
{
throw new FatalError(txojLogger.i18NLogger.get_CadaverLockRecord_1());
}
return (manager.releaseAll(super.actionHandle.get_uid()) ? TwoPhaseOutcome.FINISH_OK : TwoPhaseOutcome.FINISH_ERROR);
}
else
return TwoPhaseOutcome.FINISH_OK;
}
public int nestedCommit ()
{
if (txojLogger.logger.isTraceEnabled())
{
txojLogger.logger.trace("CadaverLockRecord::nestedCommit() for "+order());
}
if (doRelease)
{
/*
* Need to change the owner of the locks from the current
* committing action to its parent. Since no genuine LockManager
* exists at this time create one to take care of this.
*/
if (super.actionHandle == null)
{
throw new FatalError(txojLogger.i18NLogger.get_CadaverLockRecord_2());
}
CadaverLockManager manager = new CadaverLockManager(order(), objectTypeName);
return (manager.propagate(super.actionHandle.get_uid(), super.actionHandle.parent().get_uid()) ? TwoPhaseOutcome.FINISH_OK : TwoPhaseOutcome.FINISH_ERROR);
}
else
return TwoPhaseOutcome.FINISH_OK;
}
public int topLevelAbort ()
{
if (txojLogger.logger.isTraceEnabled())
{
txojLogger.logger.trace("CadaverLockRecord::topLevelAbort() for "+order());
}
if (doRelease)
{
if (super.actionHandle == null)
{
throw new FatalError(txojLogger.i18NLogger.get_CadaverLockRecord_3());
}
CadaverLockManager manager = new CadaverLockManager(order(), objectTypeName);
return (manager.releaseAll(super.actionHandle.get_uid()) ? TwoPhaseOutcome.FINISH_OK : TwoPhaseOutcome.FINISH_ERROR);
}
else
return TwoPhaseOutcome.FINISH_OK;
}
public int topLevelCommit ()
{
if (txojLogger.logger.isTraceEnabled())
{
txojLogger.logger.trace("CadaverLockRecord::topLevelCommit() for "+order());
}
if (doRelease)
{
if (super.actionHandle == null)
{
throw new FatalError(txojLogger.i18NLogger.get_CadaverLockRecord_4());
}
CadaverLockManager manager = new CadaverLockManager(order(), objectTypeName);
return (manager.releaseAll(super.actionHandle.get_uid()) ? TwoPhaseOutcome.FINISH_OK : TwoPhaseOutcome.FINISH_ERROR);
}
else
return TwoPhaseOutcome.FINISH_OK;
}
public void print (PrintWriter strm)
{
strm.println("CadaverLockRecord : ");
super.print(strm);
}
public String type ()
{
return "/StateManager/AbstractRecord/LockRecord/CadaverLockRecord";
}
public boolean shouldReplace (AbstractRecord ar)
{
return (((order().equals(ar.order())) &&
ar.typeIs() == RecordType.LOCK ) ? true : false);
}
/*
* Already determined that ar is a LockRecord, otherwise replace would
* not have been called.
* So, get the type from it before it is deleted!
*/
public void replace (AbstractRecord ar)
{
LockRecord lr = (LockRecord) ar;
objectTypeName = lr.lockType();
}
protected CadaverLockRecord ()
{
super();
cadaverLockStore = null;
objectTypeName = null;
doRelease = false;
if (txojLogger.logger.isTraceEnabled())
{
txojLogger.logger.trace("CadaverLockRecord::CadaverLockRecord ()");
}
}
private LockStore cadaverLockStore;
private String objectTypeName;
private boolean doRelease;
}