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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » CWF with MinOccur = 0

CWF with MinOccur = 0

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mark.luebinski

Posted: Tue Feb 13, 2007 3:45 am Post subject: CWF with MinOccur = 0

Acolyte

Joined: 27 Mar 2006
Posts: 56

Dear Masters,

If I define in CWF a simple message

F1 CHAR(6) MinOcc = 1, MaxOcc = 1
F2 CHAR(6) MinOcc = 0, MaxOcc = 1
F3 CHAR(6) MinOcc = 1, MaxOcc = 1

the second MinOcc don't work. Messages with Length = 12 are not accepted. It is possible to say to Broker, he must accept it and assign the values 7 till 12 to F3?

Thank you very much!

Mark

gregop

Posted: Tue Feb 13, 2007 4:14 am Post subject:

Voyager

Joined: 24 Nov 2006
Posts: 81

I don't think you can do that, MinOccurs is largely ignored on CWF.

See CWF / Min Max Occurs

http://publib.boulder.ibm.com/infocenter/wmbhelp/v6r0m0/index.jsp?topic=/com.ibm.etools.mft.doc/ad10490_.htm

It MIGHT work if you have your optional element at the end

F1 CHAR(6) MinOcc = 1, MaxOcc = 1
F3 CHAR(6) MinOcc = 1, MaxOcc = 1
F2 CHAR(6) MinOcc = 0, MaxOcc = -1

If that doesn't work then I think you'll need 2 message sets unless you can include an additional element that is a counter for F2.

kimbert

Posted: Tue Feb 13, 2007 4:23 am Post subject:

Jedi Council

Joined: 29 Jul 2003
Posts: 5542
Location: Southampton

gregop is spot-on. It will work if the optional element is at the end of the message ( assuming that you're using v6 ).
You can define an integer field and refer to it using OCCURS DEPENDING ON.

If all else fails, you can do this:
- parse the input message in the BLOB domain
- inspect its length
- select the appropriate message type from your message set
- use CREATE...PARSE to create the message tree.

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