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 $

   
   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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      synchronized (state)
      {
         
         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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      MethodInvocation mi = (MethodInvocation)invocation;
      SessionState state = getState(invocation);
      
      synchronized (state)
      {      
         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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      MessageProxy m = (MessageProxy)mi.getArguments()[0];
      String theConsumerID = (String)mi.getArguments()[1];
      String queueName = (String)mi.getArguments()[2];
      int maxDeliveries = ((Integer)mi.getArguments()[3]).intValue();
      SessionDelegate connectionConsumerDelegate = ((SessionDelegate)mi.getArguments()[4]);
      boolean shouldAck = ((Boolean)mi.getArguments()[5]).booleanValue();
      
      if (m == null)
      {
         throw new IllegalStateException("Cannot add a null message to the session");

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      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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         {
            DeliveryInfo info = (DeliveryInfo)acks.get(0);
            
            MessageProxy mp = info.getMessageProxy();
            
            SessionDelegate del = mp.getSessionDelegate();
            
            del.redeliver(acks);
         }
      }
   }

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