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| Setting Userdata in MQ Trigger Message? |
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| HMed |
 Posted: Fri Jul 08, 2005 3:47 pm Post subject: Setting Userdata in MQ Trigger Message? |
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Novice
Joined: 17 Sep 2004
Posts: 17
Location: Camp Hill, PA. - USA
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Is it possible to set the Trigger Message User Data field (MQCHAR128 on MQTM Structure) on the receiving trigger structure ... from a java program on the sending side, or is the data in this field only set when the queue is initially created (process definition) ?
How does MQ_PROCESS_USER_DATA_LENGTH tie into it? I see documentation where I can set this from my java program, but can't find any examples in the MQ documentation on how to actually set the User Data itself.
Any assistance or clarification is greatly appreciated.
Thanks,
Ed. |
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| vennela |
| Posted: Fri Jul 08, 2005 3:55 pm Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| What s that you are trying to achieve |
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| HMed |
| Posted: Fri Jul 08, 2005 4:08 pm Post subject: |
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Novice
Joined: 17 Sep 2004
Posts: 17
Location: Camp Hill, PA. - USA
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Well, I want to send some additional data to the receiver.
Why not just put the additional data in the message?, you might ask.
The application is already designed and has been in use for a number of years. Additional data in the message would require much coordination amongst other users, so it looked like I might be able to use the MQTM UserData field.
Is it possible? |
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| EddieA |
| Posted: Fri Jul 08, 2005 5:28 pm Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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Maybe, if you want to write your own trigger monitor.
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| HMed |
| Posted: Mon Jul 11, 2005 3:04 am Post subject: |
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Novice
Joined: 17 Sep 2004
Posts: 17
Location: Camp Hill, PA. - USA
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Well, if I were to write my own trigger monitor, then what I would actually be monitoring is on the receiving side.
What I want to know is if it is possible to set the Trigger Message User Data field (MQCHAR128 on MQTM Structure) of the receiving trigger structure ... from a java program on the sending side.
Does anybody know if this is possible, or is the data in the Trigger Message User Data (MQCHAR128 on MQTM Structure) field only set when the queue is initially created (process definition) ?
Any assistance or clarification is greatly appreciated.
Thanks,
Ed. |
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| jefflowrey |
| Posted: Mon Jul 11, 2005 3:10 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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The MQTM/MQTMC2 structure is only created by the trigger monitor, from the contents of the inititation message.
The initiation message is created by MQ, from the definition of the queue and process.
It would be possible, I believe, to write code that would use MQSET to dynamically adjust the process definition.
And it's certainly possible to write code to create your own initiation message - this is why trigger monitors are security risks.
_________________
I am *not* the model of the modern major general. |
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