MQSeries.net :: View topic - Generate new MQMD.MsgId in eSQL without writing to Queue?

Ramphart · Posted: Fri Aug 21, 2009 1:43 pm Post subject:

- Windows Platform
- Message Broker 6.1 (Ver 6.1.0.1)
- Toolkit 6.1.0

Hi,

Is there a way to generate a unique MQMD.MsgId in esql code WITHOUT putting the message to a queue eventually?

I use to develop flows which gets its original (incoming) message from an Input Queue and hence always had a message ID to work with. In the new requirement my messages will come in via a SOAPInput node.

I have a flow: SOAPInput -> AddMQMD_ComputeNode -> Subflow(Log To DB) -> Transform_ComputeNode -> SendToExternalSystem -> Subflow(Log To DB)
[Also a SOAPReply within the flow but node important for this issue]

I have a Subflow(Log To DB) used throughout our flows / environment which logs messages to our database. One of the fields logged is the MQMD.MsgId of messages as is pass through the flows and the system in general.

I need to generate a unique MsgId at the point where I get the SOAP Message as I need to log the incoming message to the database before we do transformation etc on it and later within the flow the same MsgId would also be used to logged subsequent transformed messages.

I'll always get a X'000000....' MsgId if I do the following:
Set OutputRoot.MQMD.MsgId = MQMI_NONE;
within the AddMQMD Compute node which is not the desired result.

Is there any way / function to generate a proper MsgId WITHOUT me having to write the message to an output queue?

Thanks in advance for any assistance.

Regards
Ramo
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Applications Architect