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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » handling large message in mapping node

handling large message in mapping node

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WBI_user

Posted: Mon Jan 12, 2009 9:12 am Post subject: handling large message in mapping node

Partisan

Joined: 07 Aug 2001
Posts: 386

There are a couple of very good chapters in the info center on how to handle large XML or MRM messages using ESQL techniques. Is there anything equivalent on reducing memory usage when mapping nodes are used to handle records with high numbers of repeat structures?

kimbert

Posted: Mon Jan 12, 2009 2:08 pm Post subject:

Jedi Council

Joined: 29 Jul 2003
Posts: 5542
Location: Southampton

A key feature of those techniques is this loop:

for each occurrence of the repeating structure
- parse a single occurrence
- create output bitstream for this occurrence
- delete the message tree and recover the memory

I don't think the Mapping node allows you to delete portions of the message tree, so I think the answer to your question is 'no'...although I would be happy to be proved wrong.

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