CrashAbstractRecordImpl.java

/*
 * 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.
 */
package com.hp.mwtests.ts.arjuna.recovery;

/*
 * Copyright (C) 1999-2001 by HP Bluestone Software, Inc. All rights Reserved.
 *
 * HP Arjuna Labs,
 * Newcastle upon Tyne,
 * Tyne and Wear,
 * UK.
 *
 * $Id: CrashAbstractRecordImpl.java 2342 2006-03-30 13:06:17Z  $
 */

import java.io.IOException;

import com.arjuna.ats.arjuna.ObjectType;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.ats.arjuna.coordinator.AbstractRecord;
import com.arjuna.ats.arjuna.coordinator.RecordType;
import com.arjuna.ats.arjuna.coordinator.TwoPhaseOutcome;
import com.arjuna.ats.arjuna.state.InputObjectState;
import com.arjuna.ats.arjuna.state.OutputObjectState;

public class CrashAbstractRecordImpl extends AbstractRecord
{
    public CrashAbstractRecordImpl(int crashBehaviour)
    {
        super(new Uid("-7FFFFFF" + _count + ":0:0:0:0"),
                "com.hp.mwtests.ts.arjuna.recovery.CrashAbstractRecordImpl",
                ObjectType.ANDPERSISTENT);
        _count++;
        _crash_behaviour = crashBehaviour;
    }

    // for crash recovery
    public CrashAbstractRecordImpl()
    {
    }

    public int typeIs()
    {
        return RecordType.USER_DEF_FIRST0;
    }

    public boolean doSave()
    {
        return true;
    }

    public String type()
    {
        return "/StateManager/AbstractRecord/com.hp.mwtests.ts.arjuna.recovery.CrashAbstractRecordImpl";
    }

    public boolean save_state(OutputObjectState os, int i)
    {
        boolean result = super.save_state(os, i);

        if (result) {
            try {
                os.packInt(_save_param);
            }
            catch (IOException ex) {
                result = false;
            }
        }

        return result;
    }

    public boolean restore_state(InputObjectState os, int i)
    {
        boolean result = super.restore_state(os, i);

        try {
            _save_param = os.unpackInt();
            _save_param++;
        }
        catch (IOException ex) {
            result = false;
        }

        return result;
    }

    public Object value()
    {
        return null;
    }

    public void setValue(Object object)
    {
    }

    public int nestedAbort()
    {
        return TwoPhaseOutcome.FINISH_OK;
    }

    public int nestedCommit()
    {
        return TwoPhaseOutcome.FINISH_OK;
    }

    public int nestedPrepare()
    {
        return TwoPhaseOutcome.PREPARE_OK;
    }

    public int topLevelAbort()
    {
        return TwoPhaseOutcome.FINISH_OK;
    }

    public int topLevelCommit()
    {
        int two_phase_outcome = TwoPhaseOutcome.FINISH_OK;

        if (_crash_behaviour == CRASH_IN_COMMIT) {
            two_phase_outcome = TwoPhaseOutcome.FINISH_ERROR;
        }

        return two_phase_outcome;
    }

    public int topLevelPrepare()
    {
        int two_phase_outcome = TwoPhaseOutcome.PREPARE_OK;

        if (_crash_behaviour == CRASH_IN_PREPARE) {
            two_phase_outcome = TwoPhaseOutcome.PREPARE_NOTOK;
        }

        return two_phase_outcome;
    }

    public void alter(AbstractRecord abstractRecord)
    {
    }

    public void merge(AbstractRecord abstractRecord)
    {
    }

    public boolean shouldAdd(AbstractRecord abstractRecord)
    {
        return false;
    }

    public boolean shouldAlter(AbstractRecord abstractRecord)
    {
        return false;
    }

    public boolean shouldMerge(AbstractRecord abstractRecord)
    {
        return false;
    }

    public boolean shouldReplace(AbstractRecord abstractRecord)
    {
        return false;
    }

    public static final int NO_CRASH = 0;
    public static final int CRASH_IN_PREPARE = 1;
    public static final int CRASH_IN_COMMIT = 2;
    public static final int CRASH_IN_ABORT = 3;
    private static int _save_param = 0;
    private static int _count = 1;
    private static int _crash_behaviour = NO_CRASH;
}