/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., 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
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.jms.wireformat;
import java.util.Map;
import org.jboss.jms.server.endpoint.advised.AdvisedSupport;
import org.jboss.logging.Logger;
import EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap;
/**
* A NewJMSDispatcher
*
* @author <a href="mailto:tim.fox@jboss.com">Tim Fox</a>
* @version <tt>$Revision: 2330 $</tt>
*
* $Id: Dispatcher.java 2330 2007-02-15 23:38:32Z timfox $
*
*/
public class Dispatcher
{
private static final Logger log = Logger.getLogger(Dispatcher.class);
public static Dispatcher instance = new Dispatcher();
private Map targets;
private Dispatcher()
{
targets = new ConcurrentReaderHashMap();
}
public Object getTarget(int id)
{
return getTarget(new Integer(id));
}
public Object getTarget(Integer id)
{
return targets.get(id);
}
public void registerTarget(Integer id, AdvisedSupport obj)
{
targets.put(id, obj);
}
public void registerTarget(int id, AdvisedSupport obj)
{
registerTarget(new Integer(id), obj);
}
public boolean unregisterTarget(Integer id, Object endpoint)
{
// Note that we pass the object id in, this is as a sanity check to ensure the object we are
// deregistering is the correct one since there have been bugs related to deregistering the
// wrong object. This can happen if an earlier test opens a connection then the test ends
// without closing the connection, then on the server side the serverpeer is restarted which
// resets the object counter, so a different object is registered under the id of the old
// object. Remoting then times out the old connection and dereigsters the new object which is
// registered under the same id.
// See http://jira.jboss.com/jira/browse/JBMESSAGING-812
AdvisedSupport advised = (AdvisedSupport)(targets.get(id));
if (advised == null)
{
// This can happen due to http://jira.jboss.com/jira/browse/JBMESSAGING-812
log.warn("Cannot find object with id " + id + " to register");
return false;
}
if (advised.getEndpoint() != endpoint)
{
log.warn("The object you are trying to deregister is not the same as the one you registered!");
return false;
}
else
{
return targets.remove(id) != null;
}
}
public boolean unregisterTarget(int id, Object obj)
{
return unregisterTarget(new Integer(id), obj);
}
}