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| Message process question |
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| Lisa |
 Posted: Tue Nov 11, 2003 11:37 am Post subject: Message process question |
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Master
Joined: 07 Jun 2002
Posts: 287
Location: NJ
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All,
I need to perform the following steps in my message flow.
MQInput --> Compute --> MQOutPut
I receive 1000-11000 byte message with a four byte header and 20 byte trailer record. How can I strip the header and trailer off the messages and parse the result using MRM domain?
I can supply more information if needed.
Thanks, Lisa |
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| jefflowrey |
| Posted: Tue Nov 11, 2003 1:30 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Well, you could first model the header and the trailer in your MRM.
Create two messages in the message set, one with the header and trailer and one without.
Or you could strip off the header and trailer using SUBSTRING on BLOB data, and then use a RCD node to tell WMQI to parse the data using your MRM model.
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I am *not* the model of the modern major general. |
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| Lisa |
| Posted: Tue Nov 11, 2003 1:54 pm Post subject: Message process question |
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Master
Joined: 07 Jun 2002
Posts: 287
Location: NJ
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Jeff,
Correct if I'm wrong, but the RCD will parse the orginal input message, not
the newly formed BLOB?
Thanks, Lisa |
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| jefflowrey |
| Posted: Tue Nov 11, 2003 3:44 pm Post subject: Re: Message process question |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| Lisa wrote: |
Jeff,
Correct if I'm wrong, but the RCD will parse the orginal input message, not
the newly formed BLOB?
Thanks, Lisa |
No, I don't think so. I do this quite a lot. You just have to make sure to set the OutputRoot.BLOB.BLOB to the result you want to parse.
So it looks like
MQInput-->StripHeaderAndTrailerFromBlob-->RCD-->ProcessParsedMessage-->MQOutput
Where "StripHeaderAndTrailerFromBlob" and "ProcessParsedMessage" are Compute Nodes.
The ESQL in StripHeaderAndTrailerFromBlob looks something like
| Code: |
| Set OutputRoot.BLOB.BLOB = substring(InputRoot.BLOB.BLOB from <<length of header>> for <<length of message minus length of trailer minus length of header>>); |
Do a "Copy Message Headers" instead of "Copy Entire Message".
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