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| Message format CWF and variable length |
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| krish |
 Posted: Mon Jun 10, 2002 11:06 am Post subject: Message format CWF and variable length |
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Apprentice
Joined: 20 Apr 2002
Posts: 27
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| I had a message with CWF and the last elemnt length is going to vary. Eg It is not a fixed length. Is ther any way to handle it. |
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| kirani |
| Posted: Mon Jun 10, 2002 12:02 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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You can handle variable length strings in CWF in two ways,
1. Select the physical Type as 'Null Terminated' and WMQI will look for hex nULL char, X'00' in your input message.
2. Have an interger field in the message, which defines the length for string element. This integer field must appear above the String element in the tree view of the message. Specify Length Type as Value Of for this string element.
_________________
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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| CodeCraft |
| Posted: Mon Jun 17, 2002 1:02 pm Post subject: |
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Disciple
Joined: 05 Sep 2001
Posts: 195
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| The possibility exists that this last element is not terminated or length encoded. However, you can get around this easily by pulling the message in as a BLOB, appending X'00', and then reparsing against an MRM CWF definition where the final element IS definited as null terminated. |
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| Miriam Kaestner |
| Posted: Wed Jun 19, 2002 12:43 am Post subject: |
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Centurion
Joined: 26 Jun 2001
Posts: 103
Location: IBM IT Education Services, Germany
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You could also set Length Units = End of Bitstream.
From Online Help: All data to the end of the bitstream is processed. (Valid only if this element is the last in the message. If you select this value, you do not need to enter a value for the properties Length Count or Length Value Of.) |
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