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| Dynamic RCD parsing. |
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Message
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| Jose_Manuel |
 Posted: Thu Apr 10, 2003 12:34 am Post subject: Dynamic RCD parsing. |
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Newbie
Joined: 10 Apr 2003
Posts: 2
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Hi All:
I have to parse and format/route multiple message types arriving on a single queue
(like http://www.mqseries.net/phpBB2/viewtopic.php?t=8312).
I have a general MRM-CWF that can read all messages (all messages
have the same header, so this MRM-CWF just read the fields of the
header and store the rest as a Binary field).
From the fields in the header I know (asking a database), the particular
MRM-CWF (MessageSet & MessageType) of the message, and I want to
dinamically parse this message (without modifing the Message Flow).
I have tried to use:
MQInput (Generic Message) -> Compute (Change MessageType
and MessageSet) -> RCD -> Compute (Generic Transform
Concrete Message) -> MQOutput
...but I can't parse the message (I get an empty message).
(the ESQL code in the compute node (copy message headers selected) is:
SET OutputRoot.Properties.MessageDomain = 'MRM';
SET OutputRoot.Properties.MessageFormat = 'CWF';
SET OutputRoot.Properties.MessageSet = 'XXXXXX';
SET OutputRoot.Properties.MessageType = 'XXXXXXX';
)
Anybody knows if it can be done? (dinamically parsing a MRM Message
in a RCD or Compute node)
I don't want to include any information about the MessageType and
MessageSet in the Message Flow.
Any ideas welcome. |
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| Jose_Manuel |
| Posted: Wed Apr 23, 2003 6:18 am Post subject: A solution |
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Newbie
Joined: 10 Apr 2003
Posts: 2
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A working solution without RCS nodes (thanks to JMML from
IBM Business Consulting Services - Spain):
MQInput (MRM-General) -> Compute (Copy message headers)->
-> (MRM-Concrete).
ESQL Code in the Compute node:
DECLARE newMessageSet CHAR;
DECLARE newMessageType CHAR;
DECLARE msgBLOB BLOB;
...
code that gets from a DataBase and the 'header message fields'
the 'MessageSet' and 'MessageType' of the concrete message
and puts it in newMessageSet and newMessageType.
...
set msgBLOB=BITSTREAM(InputRoot.MRM);
SET OutputRoot.Properties.MessageDomain='MRM';
SET OutputRoot.Properties.MessageFormat='CWF';
SET OutputRoot.Properties.MessageSet=newMessageSet;
SET OutputRoot.Properties.MessageType=newMessageType;
CREATE LASTCHILD OF OutputRoot DOMAIN ('MRM')
PARSE(msgBLOB, 546, 437, newMessageSet, newMessageType,
'CWF'); |
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