Examples of org.jboss.jms.delegate.SessionDelegate

org.jboss.jms.delegate.SessionDelegate
Represents the minimal set of operations to provide session functionality. Some of the methods may be implemented on the server, others will be handled in the advice stack. @author Ovidiu Feodorov @author Tim Fox @version $Revision: 2421 $ $Id: SessionDelegate.java 2421 2007-02-25 00:06:06Z timfox $

      if (trace) { log.trace("run()"); }
      
      MethodInvocation mi = (MethodInvocation)invocation;
            
      //This is the delegate for the session from the pool
      SessionDelegate del = (SessionDelegate)mi.getTargetObject();
      
      SessionState state = getState(invocation);
      
      int ackMode = state.getAcknowledgeMode();

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   private boolean ackDelivery(SessionDelegate sess, DeliveryInfo delivery) throws Exception
   {
     if (delivery.isShouldAck())
     {
        SessionDelegate connectionConsumerSession = delivery.getConnectionConsumerSession();
        
        //If the delivery was obtained via a connection consumer we need to ack via that
        //otherwise we just use this session
        
        SessionDelegate sessionToUse = connectionConsumerSession != null ? connectionConsumerSession : sess;
        
        return sessionToUse.acknowledgeDelivery(delivery);
     }
     else
     {
       return true;
     }

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   private void cancelDelivery(SessionDelegate sess, DeliveryInfo delivery) throws Exception
   {
     if (delivery.isShouldAck())
     {
        SessionDelegate connectionConsumerSession = delivery.getConnectionConsumerSession();
        
        //If the delivery was obtained via a connection consumer we need to cancel via that
        //otherwise we just use this session
        
        SessionDelegate sessionToUse = connectionConsumerSession != null ? connectionConsumerSession : sess;
        
        sessionToUse.cancelDelivery(new DefaultCancel(delivery.getDeliveryID(),
                                    delivery.getMessageProxy().getDeliveryCount(), false, false));      
     }
   }

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      return;
    }
    
    if (trace) { log.trace(this + " starting"); }
                
    SessionDelegate localdel = ((JBossSession)localSession).getDelegate();
    
    producer = localdel.createProducerDelegate(jbq);
    
    //We create the consumer with autoFlowControl = false
    //In this mode, the consumer does not handle it's own flow control, but it must be handled
    //manually using changeRate() methods
    //The local queue itself will manually send these messages depending on its state - 
    //So effectively the message buffering is handled by the local queue, not the ClientConsumer
    
    SessionDelegate sourcedel = ((JBossSession)sourceSession).getDelegate();
    
    consumer = (ClientConsumerDelegate)sourcedel.createConsumerDelegate(jbq, null, false, null, false, false);
    
    clientConsumer = ((ConsumerState)consumer.getState()).getClientConsumer();
                
    consumer.setMessageListener(this);

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        try
        {
            if (session instanceof JBossSession)
            {
                final JBossSession jbossSession = (JBossSession)session ;
                final SessionDelegate sessionDelegate = jbossSession.getDelegate() ;
                if (sessionDelegate instanceof ClientSessionDelegate)
                {
                    final ClientSessionDelegate clientSessionDelegate = (ClientSessionDelegate)sessionDelegate ;
                    final HierarchicalState state = clientSessionDelegate.getState() ;
                    if (state instanceof SessionState)

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   public Object handleClosing(Invocation invocation) throws Throwable
   {
      MethodInvocation mi = (MethodInvocation)invocation;
      SessionState state = getState(invocation);
      SessionDelegate del = (SessionDelegate)mi.getTargetObject();
            
      if (trace) { log.trace("handleClosing()"); }


      //Sanity check
      if (state.isXA() && !isXAAndConsideredNonTransacted(state))

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      MethodInvocation mi = (MethodInvocation)invocation;
      SessionState state = getState(invocation);
      
      int ackMode = state.getAcknowledgeMode();
      
      SessionDelegate sd = (SessionDelegate)mi.getTargetObject();
      
      boolean res = true;


      // if XA and there is no transaction enlisted on XA we will act as AutoAcknowledge
      // However if it's a MDB (if there is a DistinguishedListener) we should behaved as transacted

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    */
   public Object handleAcknowledgeAll(Invocation invocation) throws Throwable
   {    
      MethodInvocation mi = (MethodInvocation)invocation;
      SessionState state = getState(invocation);
      SessionDelegate del = (SessionDelegate)mi.getTargetObject();            
    
      if (!state.getClientAckList().isEmpty())
      {                 
         //CLIENT_ACKNOWLEDGE can't be used with a MDB so it is safe to always acknowledge all
         //on this session (rather than the connection consumer session)

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      }
      
      if (trace) { log.trace("recovering the session"); }
       
      //Call redeliver
      SessionDelegate del = (SessionDelegate)mi.getTargetObject();
      
      int ackMode = state.getAcknowledgeMode();
      
      if (ackMode == Session.CLIENT_ACKNOWLEDGE)
      {
         List dels = state.getClientAckList();
         
         state.setClientAckList(new ArrayList());
         
         del.redeliver(dels);


         state.setRecoverCalled(true);
      }
      else if (ackMode == Session.AUTO_ACKNOWLEDGE || ackMode == Session.DUPS_OK_ACKNOWLEDGE || isXAAndConsideredNonTransacted(state))
      {
         DeliveryInfo info = state.getAutoAckInfo();
         
         //Don't recover if it's already to cancel
         
         if (info != null)
         {
            List redels = new ArrayList();
            
            redels.add(info);
            
            del.redeliver(redels);
            
            state.setAutoAckInfo(null);            


            state.setRecoverCalled(true);
         }

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      List toRedeliver = (List)mi.getArguments()[0];
       
      if (trace) { log.trace(this + " handleRedeliver() called: " + toRedeliver); }
      
      SessionDelegate del = (SessionDelegate)mi.getTargetObject();
      
      // Need to be redelivered in reverse order.
      for (int i = toRedeliver.size() - 1; i >= 0; i--)
      {
         DeliveryInfo info = (DeliveryInfo)toRedeliver.get(i);

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