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| Help me please -- problem with THROW statement |
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Message
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| sguruprasanna |
 Posted: Thu Apr 07, 2005 11:27 am Post subject: Help me please -- problem with THROW statement |
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Apprentice
Joined: 29 Jul 2002
Posts: 37
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Hi All,
I am using MQSI V 2.1 CSD 6 on AIX
I am not sure if this is because I use the THROW statement or because I use the generic error handler code provided by IBM....
I got the generic error handler subflow code from the below link:
http://www-128.ibm.com/developerworks/websphere/library/techarticles/0305_ansari/appendix.html#sec10
My flow is like:
MQInputNode----(Out)----->Compute Node------->MQOutputNode
|
|--------(Catch)--------->Error-handler-subflow
The ESQL code in the compute node (of main flow) is
| Code: |
-- Enter SQL below this line. SQL above this line might be regenerated, causing any modifications to be lost.
SET OutputRoot.MQRFH = NULL;
SET OutputRoot.MQMD.Format = 'MQSTR';
SET OutputRoot.Properties.MessageDomain = 'XML';
SET OutputRoot.Properties.MessageFormat = '';
SET OutputRoot.Properties.MessageSet = '';
SET OutputRoot.Properties.MessageType='';
IF (InputBody."MSG"."Data" = 'TestData') THEN
THROW USER EXCEPTION;
ELSE
SET OutputRoot.XML.Result.MSG = 'Processed successfully';
END IF;
IF (InputBody."MSG"."Data" = 'NoData') THEN
THROW USER EXCEPTION;
ELSE
SET OutputRoot.XML.Result.MSG = 'Processed successfully';
END IF;
IF (InputBody."MSG"."Data" = 'Data') THEN
THROW USER EXCEPTION;
ELSE
SET OutputRoot.XML.Result.MSG = 'Processed successfully';
END IF;
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My Input message is:
<MSG>
<Data>TestData</Data>
</MSG>
The problem is, whenever i test the mainflow using the above message, it gets into an infinite loop.... I am sure there is nothing much in ESQL of the mainflow's compute node.. When I checked the error handler code (which i got from the above link), a while loop
| Code: |
While FieldName(Path) <> 'Insert' do
MOVE Path NextSibling;
End while; |
is causing the trouble whenever I use THROW statement... On the other hand, if I use a throw node to raise an exception it works fine. Is there anything wrong with the THROW statement I am using? can you please explain me what is this while loop is doing..? if I comment it out, everything works fine..
I went through the exception list structure, but I am not able to figure out what causes this never-ending while loop..
Please help..
regards
Guru |
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| JT |
| Posted: Thu Apr 07, 2005 12:05 pm Post subject: |
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|
Padawan
Joined: 27 Mar 2003
Posts: 1564
Location: Hartford, CT.
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| Your Throw statement doesn't include any Values, thus there are no Inserts in the exception. |
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| sguruprasanna |
| Posted: Thu Apr 07, 2005 12:51 pm Post subject: |
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Apprentice
Joined: 29 Jul 2002
Posts: 37
|
| Thanks a lot.. It worked when I included Values in the Throw statement. |
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