/*
* IronJacamar, a Java EE Connector Architecture implementation
* Copyright 2013, Red Hat Inc, and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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 Eclipse Public License 1.0 as
* published by the Free Software Foundation.
*
* 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 Eclipse
* Public License for more details.
*
* You should have received a copy of the Eclipse Public License
* along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package javax.resource.spi.work;
import java.util.EventListener;
/**
* This models a <code>WorkListener</code> instance which would be notified
* by the <code>WorkManager</code> when the various <code>Work</code>
* processing events (work accepted, work rejected, work started,
* work completed) occur.
*
* The <code>WorkListener</code> instance must not make any thread
* assumptions and must be thread-safe ie., a notification could
* occur from any arbitrary thread. Further, it must not make any
* assumptions on the ordering of notifications.
*
* @version 1.0
* @author Ram Jeyaraman
*/
public interface WorkListener extends EventListener
{
/**
* Invoked when a <code>Work</code> instance has been accepted.
* @param e A <code>WorkEvent</code> object that provides more
* information about the accepted Work.
*/
void workAccepted(WorkEvent e);
/**
* Invoked when a <code>Work</code> instance has been rejected.
* @param e A <code>WorkEvent</code> object that provides more
* information about the accepted Work.
*/
void workRejected(WorkEvent e);
/**
* Invoked when a <code>Work</code> instance has started execution.
* This only means that a thread has been allocated.
* @param e A <code>WorkEvent</code> object that provides more
* information about the accepted Work.
*/
void workStarted(WorkEvent e);
/**
* Invoked when a <code>Work</code> instance has completed execution.
* @param e A <code>WorkEvent</code> object that provides more
* information about the accepted Work.
*/
void workCompleted(WorkEvent e);
}