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  * JBoss, Home of Professional Open Source
  * Copyright 2006, Red Hat Middleware LLC, and individual contributors 
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  * of the GNU Lesser General Public License, v. 2.1.
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 * (C) 2005-2006,
 * @author JBoss Inc.
 * Copyright (C) 1999-2001 by HP Bluestone Software, Inc. All rights Reserved.
 * HP Arjuna Labs,
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 * $Id: 2342 2006-03-30 13:06:17Z  $
package com.arjuna.ats.arjuna.recovery ;

Interface for Recovery manager plug-in module. RecoveryModules are registered via the properties mechanisms. The periodicWorkFirstPass of each module is called, then RecoveryManager waits for the time interval RECOVERY_BACKOFF_PERIOD (seconds), then the periodicWorkSecondPass of each module are called. The RecoveryManager then waits for period PERIODIC_RECOVERY_PERIOD (seconds) before starting the first pass again The backoff period between the first and second pass is intended to allow transactions that were in-flight during the first pass to be completed normally, without requiring the status of each one to be checked. The recovery period will typically be appreciably longer.
public interface RecoveryModule
Called by the RecoveryManager at start up, and then PERIODIC_RECOVERY_PERIOD seconds after the completion, for all RecoveryModules, of the second pass
    public void periodicWorkFirstPass ();
Called by the RecoveryManager RECOVERY_BACKOFF_PERIOD seconds after the completion of the first pass
    public void periodicWorkSecondPass ();
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