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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) 1999-2001 by HP Bluestone Software, Inc. All rights Reserved.
 * HP Arjuna Labs,
 * Newcastle upon Tyne,
 * Tyne and Wear,
 * UK.
 * $Id: 2342 2006-03-30 13:06:17Z  $
package com.arjuna.ats.arjuna.recovery ;
a service is used to serve one or more requests from an input stream and post results on an output stream. when the input sream is closed it is expected to close its output stream. note that a single service instance may be requested to process incoming requests from multiple input streams in parallel. note also that the service should be resilient to closure of the input and output streams during request processing which can happen in resposne to asynchronous dispatch of a shutdown request to the object which invoked the service.
public interface Service
   public void doWork ( InputStream inOutputStream out )
      throws IOException ;
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