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 * JBoss, a division of Red Hat                                               *
 * Copyright 2008, Red Hat Middleware, LLC, and individual                    *
 * contributors as indicated by the @authors tag. See the                     *
 * copyright.txt in the distribution for a full listing of                    *
 * individual contributors.                                                   *
 *                                                                            *
 * This is free software; you can redistribute it and/or modify it            *
 * under the terms of the GNU Lesser General Public License as                *
 * published by the Free Software Foundation; either version 2.1 of           *
 * the License, or (at your option) any later version.                        *
 *                                                                            *
 * This software is distributed in the hope that it will be useful,           *
 * but WITHOUT ANY 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 along with this software; if not, write to the Free                *
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA         *
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 ******************************************************************************/
package org.gatein.pc.portlet.container.managed;

/**
 * @author <a href="mailto:julien@jboss.org">Julien Viet</a>
 * @version $Revision: 630 $
 */
public interface ManagedObject
{

   /**
    * Returns the current managed object status.
    *
    * @return the status
    */
   LifeCycleStatus getStatus();

   /**
    * Returns the last known failure when the managed object attempted a transition, otherwise return null.
    *
    * @return the failure
    */
   Throwable getFailure();

   /**
    * Attempt to start the managed object, same as calling <code>promote(LifeCycleStatus.STARTED)</code>.
    *
    * @throws IllegalStateException when reentrency is detected
    */
   void managedStart() throws IllegalStateException;

   /**
    * Destroy the managed object, same as calling <code>demote(LifeCycleStatus.INITIALIZED)</code>.
    *
    * @throws IllegalStateException when reentrency is detected
    */
   void managedDestroy() throws IllegalStateException;
   
}
