Re: [Mantaray-users] MantaRay behavior when using TemporaryQueue with JMSReplyTo property

[Amir S. <am...@co...>]

The workaround you discussed in your previous post is inapplicable for
MantaRay, since in Manta the TemporaryQueue or TemporaryTopic object is
not passed on the JMSReplyTo as a Queue or a Topic, but rather as a
Destination (JMS1.1).
Therefore, you can not cast it to a Queue or a Topic - this is not a Queue
or Topic, it's a pure Destination.
A temporary workaround that you could use, is to create a MessageConsumer
from a Session (and not a QueueSender from a QueueSession). This is a bit
cumbersome, but this whole issue would be resolved in Manta 1.2 which will
be released early next week.

Thanks for pointing this out to us.
Nimo,

Amir adds :
I have opened a Bug on the matter, you can monitor it on:
https://sourceforge.net/tracker/index.php?func=detail&aid=1046613&group_id=112623&atid=663823

Manta Development Team.

 
  ----- Original Message ----- 
  From: Anthony Bargnesi 
  To: man...@li... 
  Sent: Wednesday, October 13, 2004 8:34 PM
  Subject: [Mantaray-users] MantaRay behavior when using TemporaryQueue with JMSReplyTo property


  Hello MantaRay developers,

  There was a bug in JMS 1.1 about setting the JMSReplyTo property to a TemporaryQueue.  Since the JMSReplyTo property takes a Destination, such as a Queue or Topic, if you try ((TemporaryQueue)message.getJMSReplyTo()) then it will throw a ClassCastException.  This bug was reported in the Java Developer Connection as bug # 4354955 (http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4354955).  The workaround is to cast message.getJMSReplyTo() to a Queue or a Topic because they extend from Destination.  So the workaround would yield ((Queue)message.getJMSReplyTo()).  

  The trouble I have with implementing this workaround is that it does not work for MantaRay.  The same ClassCastException occurs when I execute the line "final javax.jms.QueueSender producer = _queueSession.createSender((javax.jms.Queue)destination);".  The object "destination" is a javax.jms.Destination, which becomes a MantaDestination.  

  I performed a destination.class.getName() yielding "Destination DEBUG - org.mr.api.jms.MantaDestination."

  Then I performed a destination.toString(); yielding "Destination DEBUG - &&TMPQ{ODA}[4]0"
  From this debug statement it appears that it sees its a temporary queue coming from agent ODA, but I cannot cast it to a Queue.

  Any help would be appreciated, I have tried this with other JMS vendors such as swiftmq & openjms and both have succeeded in this workaround.

  Thanks,

  Anthony Bargnesi
  Software Developer
  aba...@e-...

  'There's no place like 127.0.0.1'