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| Problem in getting MQ MessageId within JMS |
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| balurnair |
 Posted: Fri Jul 23, 2010 3:58 am Post subject: Problem in getting MQ MessageId within JMS |
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Newbie
Joined: 08 Dec 2009
Posts: 4
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Hi All,
I am working with WMQ JMS binding. The JMS logical queues are in weblogic and in my MDB when i receive the message the getJMSMessageID() is giving me back an entirely different ID than the one which I have setted using MQMessage.messageId.
Here MQMessageId takes input as bytes and getJMSMessageID() gives return as String. Please let me know is there a way to retain/get the same MQMessageId when I do a getJMSMessageID() in my MDB.
Thanks In Advance,
Balu Nair |
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| Gaya3 |
| Posted: Fri Jul 23, 2010 5:37 am Post subject: Re: Problem in getting MQ MessageId within JMS |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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| balurnair wrote: |
Hi All,
I am working with WMQ JMS binding. The JMS logical queues are in weblogic and in my MDB when i receive the message the getJMSMessageID() is giving me back an entirely different ID than the one which I have setted using MQMessage.messageId.
Here MQMessageId takes input as bytes and getJMSMessageID() gives return as String. Please let me know is there a way to retain/get the same MQMessageId when I do a getJMSMessageID() in my MDB.
Thanks In Advance,
Balu Nair |
are you getting a byte converted String.
are there any conversion happening on the MDB side.?
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Regards
Gayathri
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Do Something Before you Die |
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| fjb_saper |
| Posted: Fri Jul 23, 2010 7:23 am Post subject: Re: Problem in getting MQ MessageId within JMS |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| balurnair wrote: |
Hi All,
I am working with WMQ JMS binding. The JMS logical queues are in weblogic and in my MDB when i receive the message the getJMSMessageID() is giving me back an entirely different ID than the one which I have setted using MQMessage.messageId.
Here MQMessageId takes input as bytes and getJMSMessageID() gives return as String. Please let me know is there a way to retain/get the same MQMessageId when I do a getJMSMessageID() in my MDB.
Thanks In Advance,
Balu Nair |
Don't know exactly what you are trying to do...
However on each "send" JMS assigns a new MessageId.
The MessageId returned by JMS is byte represendation in hex form of the byte array... in provider format...
so for a byte[24] you get "ID:" + 48 char representing in hex form each of the byte values.
Have fun 
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| balurnair |
| Posted: Mon Jul 26, 2010 9:54 pm Post subject: |
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Newbie
Joined: 08 Dec 2009
Posts: 4
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Hi All,
I think I got the reason..In JMS-MQ field mapping for JMSMessageID to MQMQ.MessageID is set by Send(), a value is assigned when the send() or publish() is performed (any value held in the JMS message is ignored). The value in the JMS message is updated to show the value used. So ideally we should use CorrelationID for any kind of request-response matching..because JMSCorrelationID-MQMD.CorrelationID is set by MessageObject and not by Send()...Please confirm.
Regards,
Balu Nair |
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| fjb_saper |
| Posted: Tue Jul 27, 2010 7:51 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| balurnair wrote: |
Hi All,
I think I got the reason..In JMS-MQ field mapping for JMSMessageID to MQMQ.MessageID is set by Send(), a value is assigned when the send() or publish() is performed (any value held in the JMS message is ignored). The value in the JMS message is updated to show the value used. So ideally we should use CorrelationID for any kind of request-response matching..because JMSCorrelationID-MQMD.CorrelationID is set by MessageObject and not by Send()...Please confirm.
Regards,
Balu Nair |
You got it.
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