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| Parsing stage |
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| pankajg |
 Posted: Fri Jun 14, 2002 5:19 am Post subject: Parsing stage |
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Acolyte
Joined: 11 Oct 2001
Posts: 53
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Hi All
I have a basic query , at what point (at a specific Node / specific ESQL code ) in the message flow does an input message gets parsed ?.
ie . Is it ALWAYS at the input node / At any point in the flow where the message's fields are accessed ?
& Will it be the same , for all the defined message domains ( MRM/XML/BLOB/NEON) .
_________________
Regards
Pankaj |
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| dhaksr |
| Posted: Fri Jun 14, 2002 8:57 am Post subject: |
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Apprentice
Joined: 20 Feb 2002
Posts: 37
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In WMQI 2.1, one of the features is "Parsing-on-demand".
That means, a field will be parsed only if it is accessed (it also
implies that the preceding fields will be parsed ).
Though this is implemented as an performance enhacement feature, one pitfall is an invalid message may get through (just because you havent yet
accessed the field).
You may also like to verify the Advanced Tab in MQInput Node. It has
a validate option. I am not sure whether it forces the parser. |
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| dhaksr |
| Posted: Fri Jun 14, 2002 9:39 am Post subject: |
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Apprentice
Joined: 20 Feb 2002
Posts: 37
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I verified the Valdiate option in MQInput node.
It forces the parser on Input Node.
If you dont check the flag though, "Parsing-on-demand" will be in force. |
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| pankajg |
| Posted: Fri Jun 14, 2002 11:59 am Post subject: MQSI Ver 2.0.1 |
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Acolyte
Joined: 11 Oct 2001
Posts: 53
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Thanks dhaksr.
I am using MQSI ver 2.0.1 ,i tried it myself & found that it is always "Parse on demand" ,untill the fields are accessed.
Even the use of a compute node ( but no processing inside ) does not necessiate parsing.
Please let me know ,if you find more , interesting.
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Regards
Pankaj |
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