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| unexpire msg without using compute node possible? |
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| pcelari |
 Posted: Thu Jul 19, 2007 11:30 am Post subject: |
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Chevalier
Joined: 31 Mar 2006
Posts: 411
Location: New York
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no, it doesn't behave as documented - still restore to original Expiry upon leaving the compute node.
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pcelari
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- a master of always being a newbie |
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| jefflowrey |
| Posted: Thu Jul 19, 2007 11:52 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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I created a sample flow.
it consists of MQInput->Compute->MQOutput.
The entire ESQL in the Compute node is
CREATE FUNCTION Main() RETURNS BOOLEAN
BEGIN
-- CALL CopyMessageHeaders();
CALL CopyEntireMessage();
Set OutputRoot.Properties.ExpirationTime = (10 * 60 * 60) * 2;
RETURN TRUE;
END;
If I use MQExplorer, and put a test message on the Input queue, the message on the Output queue has an integer value for the Expiry.
If I put another test message on the Output queue, it has Expiry=Unlimited.
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| pcelari |
| Posted: Mon Jul 23, 2007 3:42 am Post subject: |
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Chevalier
Joined: 31 Mar 2006
Posts: 411
Location: New York
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Your code inspired me to realized that if I set the code in CopyMessageHeader (), it always restore to the original Expiry. But if I set the value in the main(), as you did, it stays.
So one should never try to set properties or MQMD by altering the the pre-defined CopyMessageHeader(), or CopyEntireMessage().
Many thanks !
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| jefflowrey |
| Posted: Mon Jul 23, 2007 3:46 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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One should NEVER EVER change ANYTHING in the the predefined functions.
It makes the code immensely more confusing for the next person, for absolutely no gain.
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