PersistentDeleted.java :  » Database-ORM » TJDO » com » triactive » jdo » state » Java Open Source

/*
 * Copyright 2004 (C) TJDO.
 * All rights reserved.
 *
 * This software is distributed under the terms of the TJDO License version 1.0.
 * See the terms of the TJDO License in the documentation provided with this software.
 *
 * $Id: PersistentDeleted.java,v 1.6 2004/01/18 03:01:06 jackknifebarber Exp $
 */

package com.triactive.jdo.state;

import javax.jdo.JDOUserException;
import javax.jdo.Transaction;


class PersistentDeleted extends LifeCycleState
{
    protected PersistentDeleted()
    {
        isPersistent = true;
        isTransactional = true;
        isDirty = true;
        isNew = false;
        isDeleted = true;

        stateType = P_DELETED;
    }

    public LifeCycleState transitionMakeNontransactional(StateManagerImpl sm)
    {
        throw new JDOUserException("Cannot make object non-transactional: object has been deleted", sm.getObject());
    }

    public LifeCycleState transitionMakeTransient(StateManagerImpl sm)
    {
        throw new JDOUserException("Cannot make object transient: object has been deleted", sm.getObject());
    }

    public LifeCycleState transitionCommit(StateManagerImpl sm, Transaction tx)
    {
        sm.clearPersistentFields();
        sm.evictFromTransaction();
        sm.disconnect();
        return changeState(sm, TRANSIENT);
    }

    public LifeCycleState transitionRollback(StateManagerImpl sm, Transaction tx)
    {
        if (tx.getRestoreValues())
        {
            sm.restoreFields();
            sm.replaceSCOFields();
            sm.evictFromTransaction();
            return changeState(sm, P_NONTRANS);
        }
        else
        {
            sm.clearPersistentFields();
            sm.discardSavedFields();
            sm.evictFromTransaction();
            return changeState(sm, HOLLOW);
        }

    }

    public LifeCycleState transitionReadField(StateManagerImpl sm, Transaction tx)
    {
        throw new JDOUserException("Cannot read fields from a deleted object", sm.getObject());
    }

    public LifeCycleState transitionWriteField(StateManagerImpl sm, Transaction tx)
    {
        throw new JDOUserException("Cannot write fields to a deleted object", sm.getObject());
    }

    public String toString()
    {
        return "P_DELETED";
    }
}