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| Destination List not completing process |
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| woolmerc |
 Posted: Wed May 12, 2004 6:05 pm Post subject: Destination List not completing process |
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Novice
Joined: 12 May 2004
Posts: 21
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Hi all,
I have a situation where I want to pick up a message off a queue and distribute it to 2 other queues without modifying any data.
The nodes I have created are simple:
MQInputNode ---> Compute ---> RouteToLabel
Label A ----> MQOutput
Label B ----> MQOutput
Unfortunately I am finding my message is only being delivered to 1 destination queue and then ending. I cannot get the message delivered to the 2nd queue.
I am invoking the following ESQL code in my Compute mode:
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CREATE FUNCTION Main() RETURNS BOOLEAN
BEGIN
SET OutputLocalEnvironment.Destination.RouterList.DestinationData[1].labelname='Label A';
SET OutputLocalEnvironment.Destination.RouterList.DestinationData[2].labelname='Label B';
RETURN TRUE;
END;
------------------
I have checked my Label names and they are all spelt correctly. I do not get any error messages associated with the flow.
If I set the 'Mode' property to 'Route to First', Label A receives the flow. By changing the 'Mode' to the reverse option Label B receives the flow (as expected) but the 2nd label never gets control.
I am specifying 'LocalEnvironment' in the 'Compute Mode' property in the Compute Node.
I cannot understand why my message flow is failing and from the research I have done on this site, I am doing everything I should.
Please help.
Thanks,
_________________
Chris Woolmer
Programmer
KAZ Group Limited |
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| fschofer |
| Posted: Thu May 13, 2004 1:03 am Post subject: |
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Knight
Joined: 02 Jul 2001
Posts: 524
Location: Mainz, Germany
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Hi Chris,
the RouteToLabel node sends your message to only one label of yor destination list. (Upwards or downwards)
To process your complete list you have 3 possibilities:
A) But additional RouteToLabel Nodes behind your labels A or B
B) Build a node loop with a filter node
C) Use the PROPAGATE function in a compute node before your RouteToLabel node
and do the destination list setting / deleting on your own
I would recommend C.
Greetings
Frank |
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| jefflowrey |
| Posted: Thu May 13, 2004 3:21 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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If you want to send the same thing to two or more queues, you should do the following. - Set the output mode of the MQOutputNode to DestinationList
- Create a destination list that holds each queue name in the compute node
.
_________________
I am *not* the model of the modern major general. |
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| woolmerc |
| Posted: Thu May 13, 2004 7:09 pm Post subject: |
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Novice
Joined: 12 May 2004
Posts: 21
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Thanks greatly for your help guys. Much appreciated. I misinterpreted the RouteToLabel functionality.
I have implemented Frank's option B. I chose not to go with your option Jeff as I want to do some database logging after each successful Put onto a queue.
Option B seems to be working well for me guys.
Thanks again 
_________________
Chris Woolmer
Programmer
KAZ Group Limited |
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