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| Unknown terminal of Filter node |
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| Yanghui |
 Posted: Tue Jun 03, 2003 7:21 am Post subject: Unknown terminal of Filter node |
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Disciple
Joined: 08 May 2002
Posts: 151
Location: Dublin, Ireland
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Hi,
I have a question about Filter node. Hope somebody knows the answer.
If the unknown terminal of a filter node is not connectted and a message is propagated through it, I expect the message would be rolled back but actually what happened to me was that the message was discarded. Is this always true? If it is, which means I have to connect the unknown terminal to pick up the message if I don't want to lose any message. Losing message is always bad. So, to me, it's in the scope of error handling.
Normally, I leave all Failure terminals disconnectted and only connect the Catch terminal of MQInput node to a error-handling subflow to centralize error processing. Because of this strange behavior of Filter node, it seems I have to make an exception for it, which is no good to me.
Does anybody know the better way of handling the Unknown terminal of Filter node? Thanks a lot.
Regards
-Yanghui |
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| shalabh1976 |
| Posted: Tue Jun 03, 2003 10:57 am Post subject: |
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Partisan
Joined: 18 Jul 2002
Posts: 381
Location: Gurgaon, India
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It is precisely for this reason that I connect the unknown terminal to either the true or the false terminal connected node as the case may be.
For me it is mostly the false terminal. |
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| kirani |
| Posted: Tue Jun 03, 2003 4:39 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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Yanghui,
How about attaching a Throw node to the Unknown terminal of the Filter node? By doing this the message will be rollbacked and will be handled by the Error processing sub-flow.
Propagating a message thru either True, False or Unknown termianl is not considered as an error, so by default it will not throw an exception.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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| Yanghui |
| Posted: Wed Jun 04, 2003 8:11 am Post subject: |
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Disciple
Joined: 08 May 2002
Posts: 151
Location: Dublin, Ireland
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Many thanks for your replys.
Throw node is a very good idea. It works perfectly in my framework.
Thanks again
-Yanghui |
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