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| C Api / get messages with generic corr ID |
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| mqbpi |
 Posted: Fri Apr 04, 2014 3:22 am Post subject: C Api / get messages with generic corr ID |
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Newbie
Joined: 04 Apr 2014
Posts: 3
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Hello:
We have a queue that receives messages with specific correlation IDs (for example A and B).
What could be the best way to build a program that gets all the messages that have different correlation IDs from A and B?
Could we do something like this?
(if correlId != A or correlID != B then Get MSG)
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| Vitor |
| Posted: Fri Apr 04, 2014 4:41 am Post subject: Re: C Api / get messages with generic corr ID |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| mqbpi wrote: |
Could we do something like this?
(if correlId != A or correlID != B then Get MSG) |
No.
Correlation IDs are intended to identify specific messages (typically replies) and (because it's not a character field) shouldn't be used to hold specific character values.
If you're trying to pick out specific classes of message ("type A", "type B", "neither A nor B") you should hold the data somewhere else and use other message selection techniques. One possible example would be an XMS selector. Anpther would be to pub/sub rather than get/put.
Neither example is asserted to be the best, nor are these the only options.
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| RogerLacroix |
| Posted: Fri Apr 04, 2014 9:07 am Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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If different applications are processing messages with different CorrelIDs then why not just use separate queues? Why throw everything it a big giant bucket when many small buckets work better?
Regards,
Roger Lacroix
Capitalware Inc.
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| Vitor |
| Posted: Fri Apr 04, 2014 9:30 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| RogerLacroix wrote: |
| If different applications are processing messages with different CorrelIDs then why not just use separate queues? Why throw everything it a big giant bucket when many small buckets work better? |
An example of another option
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