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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) 2004, 2005,
  *
  * Arjuna Technologies Limited,
  * Newcastle upon Tyne,
  * Tyne and Wear,
  * UK.
  *
  * $Id: NullActionStore.java 2342 2006-03-30 13:06:17Z  $
  */
 
 package com.arjuna.ats.internal.arjuna.objectstore;
 
A null implementation. Useful for performance tuning.

Author(s):
Mark Little (mark@arjuna.com)
Version:
$Id: NullActionStore.java 2342 2006-03-30 13:06:17Z $
Since:
JTS 1.0.
 
 
 public class NullActionStore extends ShadowNoFileLockStore
 {
    

Returns:
current state of object. Assumes that genPathName allocates enough extra space to allow extra chars to be added. Action stores only store committed objects
 
 
     public int currentState (Uid objUidString tName)
             throws ObjectStoreException
     {
         return .;
     }

    
Commit a previous write_state operation which was made with the SHADOW StateType argument. This is achieved by renaming the shadow and removing the hidden version.
 
 
     public boolean commit_state (Uid objUidString tName)
             throws ObjectStoreException
     {
         return true;
     }
 
     public boolean hide_state (Uid uString tnthrows ObjectStoreException
     {
         return false;
     }
 
     public boolean reveal_state (Uid uString tnthrows ObjectStoreException
     {
         return false;
     }
 
     public InputObjectState read_committed (Uid storeUidString tName)
             throws ObjectStoreException
     {
         return null;
     }
 
     public InputObjectState read_uncommitted (Uid uString tn)
             throws ObjectStoreException
     {
         return null;
     }
 
     public boolean remove_committed (Uid storeUidString tName)
             throws ObjectStoreException
     {
        return true;
    }
    public boolean remove_uncommitted (Uid uString tn)
            throws ObjectStoreException
    {
        return false;
    }
    public boolean write_committed (Uid storeUidString tName,
            OutputObjectState statethrows ObjectStoreException
    {
        return true;
    }
    public boolean write_uncommitted (Uid uString tnOutputObjectState s)
            throws ObjectStoreException
    {
        return false;
    }
    
    public NullActionStore(ObjectStoreEnvironmentBean objectStoreEnvironmentBeanthrows ObjectStoreException
    {
        super(objectStoreEnvironmentBean);
    }
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