/*
* JBoss, Home of Professional Open Source
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* 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.tutorial.interceptor.bean;

import javax.ejb.InvocationContext;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.Session;

/**
 * 
 * @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
 * @version $Revision: 1.1.2.3 $
 */
public class AccountsCancelInterceptor extends AccountsInterceptor
{
   QueueConnectionFactory cf;
   
   Queue queue;
   
   QueueConnection conn;

   public Object sendCancelMessage(InvocationContext ctx) throws Exception
   {
      QueueSession session = null;
      try
      {
         System.out.println("*** AccountsCancelInterceptor intercepting " + ctx.getMethod().getName());
         System.out.println("*** AccountsConfirmInterceptor - notifying accounts dept");
         session = getConnection().createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
         Message msg = session.createTextMessage("Cancelling order " + ctx.getParameters()[0]);
         QueueSender sender = session.createSender(queue);
         sender.send(msg);
         
         return ctx.proceed();
      }
      catch(Exception e)
      {
         throw new RuntimeException(e);
      }
      finally
      {
         try{session.close();}catch(Exception e) {}
         System.out.println("*** AccountsCancelInterceptor exiting");
      }
   }
   
   QueueConnection getConnection() throws JMSException
   {
      if (conn == null)
      {
         synchronized(cf)
         {
            if (conn == null)
            {
               conn = cf.createQueueConnection();
            }
         }
      }
      
      return conn;
   }   
}