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| What is a JMS listener? |
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| cwchow |
 Posted: Thu Jan 23, 2003 2:13 pm Post subject: What is a JMS listener? |
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Joined: 29 Apr 2002
Posts: 13
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| Is JMS listener perform similiar function as mq's message triggering? |
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| kdavis |
| Posted: Tue Feb 04, 2003 8:41 am Post subject: |
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Joined: 09 Dec 2002
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In a very general way, yes. The JMSListener is registers it self as a called object (via a Java callback) so you don't need to poll the JMS session to see if there are messages waiting. Basically, the JMSListener says "when you get a message on this topic (or queue), call MY onMessage() method and pass me that message."
It differs from a trigger in that it's intended function to to process that message, where a trigger might what to start another process when a system queue gets a message, one that doesn't care about the content of the message. Also, at a high level, a trigger is a management oriented idea, where as the message listener is messaging oriented. |
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