OutputObjectState.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.
 */
/*
 * Copyright (C) 1998, 1999, 2000, 2001,
 *
 * Arjuna Solutions Limited,
 * Newcastle upon Tyne,
 * Tyne and Wear,
 * UK.  
 *
 * $Id: OutputObjectState.java 2342 2006-03-30 13:06:17Z  $
 */

package com.arjuna.ats.arjuna.state;

import java.io.IOException;
import java.io.PrintWriter;

import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.ats.arjuna.logging.tsLogger;
import com.arjuna.ats.internal.arjuna.common.UidHelper;




/**
 * OutputObjectState provides some additional methods to a
 * basic OutputBuffer.
 *
 * @author Mark Little (mark@arjuna.com)
 * @version $Id: OutputObjectState.java 2342 2006-03-30 13:06:17Z  $
 * @since JTS 1.0.
 */

public class OutputObjectState extends OutputBuffer
{

public OutputObjectState ()
    {
	if (tsLogger.logger.isTraceEnabled()) {
        tsLogger.logger.trace("OutputObjectState::OutputObjectState()");
    }
	
	bufferUid = new Uid();
	super._valid = bufferUid.valid();
	
	imageType = null;
    }
    
public OutputObjectState (OutputObjectState copyFrom)
    {
	/*
	 * Don't use byte[] constructor as buffer is already
	 * initialised.
	 */
	
	super(copyFrom);

	if (tsLogger.logger.isTraceEnabled()) {
        tsLogger.logger.trace("OutputObjectState::OutputObjectState(" + copyFrom + ")");
    }

	try
	{
	    bufferUid = new Uid(copyFrom.bufferUid);
	    super._valid = bufferUid.valid();
	
	    imageType = new String(copyFrom.imageType);
	}
	catch (Exception ex)
	{
	    super._valid = false;
	}
    }

public OutputObjectState (InputObjectState copyFrom)
    {
	super(copyFrom.buffer());

	if (tsLogger.logger.isTraceEnabled()) {
        tsLogger.logger.trace("OutputObjectState::OutputObjectState(" + copyFrom + ")");
    }

	try
	{
	    bufferUid = new Uid(copyFrom.stateUid());
	    super._valid = super._valid && bufferUid.valid();

	    imageType = new String(copyFrom.type());
	}
	catch (Exception ex)
	{
	    super._valid = false;
	}
    }
    
public OutputObjectState (Uid newUid, String tName)
    {
	if (tsLogger.logger.isTraceEnabled()) {
        tsLogger.logger.trace("OutputObjectState::OutputObjectState(" + newUid + ", " + tName + ")");
    }

	bufferUid = new Uid(newUid);
	super._valid = bufferUid.valid();
	
	imageType = (tName == null ? null : new String(tName));
    }

public OutputObjectState (Uid newUid, String tName, byte[] buffer)
    {
	super(buffer);

	if (tsLogger.logger.isTraceEnabled()) {
        tsLogger.logger.trace("OutputObjectState::OutputObjectState(" + newUid + ", " + tName + ")");
    }

	bufferUid = new Uid(newUid);
	super._valid = super._valid && bufferUid.valid();
	
	imageType = (tName == null ? null : new String(tName));
    }

public final boolean notempty ()
    {
	return ((length() > 0) ? true : false);
    }

public final int size ()
    {
	return (length());
    }

public final Uid stateUid ()
    {
	return bufferUid;
    }

public final String type ()
    {
	return imageType;
    }

public void print (PrintWriter strm)
    {
	strm.println("OutputObjectState Uid   : "+bufferUid+"\n");
	
	if (imageType != null)
	    strm.println("OutputObjectState Type  : "+imageType+"\n");
	else
	    strm.println("OutputObjectState Type  : null\n");

	strm.println("OutputObjectState Size  : "+size()+"\n");
	strm.println("OutputObjectState Buffer: ");

	super.print(strm);
    }

    public String toString ()
    {
	String val = "OutputObjectState Uid   : "+bufferUid+"\n";
	
	if (imageType != null)
	    val += "OutputObjectState Type  : "+imageType+"\n";
	else
	    val += "OutputObjectState Type  : null\n";

	val += "OutputObjectState Size  : "+size()+"\n";
	val += "OutputObjectState Buffer: ";

	return val;
    }

public synchronized void copy (OutputObjectState objstate)
    {
        if (tsLogger.logger.isTraceEnabled())
            tsLogger.logger.trace("OutputObjectState::copy for " + bufferUid);
	
	super.copy(objstate);

	bufferUid = new Uid(objstate.bufferUid);
	super._valid = bufferUid.valid();
	
	imageType = (objstate.imageType == null ? null : new String(objstate.imageType));
    }
    
public synchronized void packInto (OutputBuffer buff) throws IOException
    {
	buff.packString(imageType);
	UidHelper.packInto(bufferUid, buff);

	super.packInto(buff);
    }

private Uid    bufferUid;
private String imageType;

}