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| wese345 |
 Posted: Tue Dec 10, 2013 5:31 am Post subject: dynamic get messages from one queue by CorrelId |
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Novice
Joined: 05 Aug 2013
Posts: 21
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Hi,guys
I want to ask for a advice or tell me how to deal with this senario.
I have two queues.
Q1 stores messages that is formed by XML.
Q2 stores messages that is bitstream.
Now,I read a message in Q1, and then get a value which is called 'msgId'.Then use this value to get a group messages from Q2 that each message's CorrelId is the same as 'msgId'.
Here is my problem.
My message flow like this: MQInput(read from Q1)->Compute->MQGet(get message by CorrelId from Q2)->MQOutput
When I read a message from Q1,I get one message from Q2. The other messages that contains the same value 'msgId' still remain in Q2. How can I get them together.
Please help me .Or if you have a better way to reach the same result.
Thanks |
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| Vitor |
| Posted: Tue Dec 10, 2013 6:08 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Use a Collector node to read the messages from Q1 & Q2, forming all the Q1 messages and Q2 messages which share an id value (accepting that the value is in 2 different locations) into a single collection.
Then process the collection.
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Honesty is the best policy.
Insanity is the best defence. |
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| smdavies99 |
| Posted: Tue Dec 10, 2013 6:15 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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| Vitor wrote: |
Use a Collector node to read the messages from Q1 & Q2, forming all the Q1 messages and Q2 messages which share an id value (accepting that the value is in 2 different locations) into a single collection.
Then process the collection. |
does the collector node read messages from a Queue?
I must have missed that bit.
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WMQ User since 1999
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Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| Vitor |
| Posted: Tue Dec 10, 2013 6:23 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| smdavies99 wrote: |
| Vitor wrote: |
Use a Collector node to read the messages from Q1 & Q2, forming all the Q1 messages and Q2 messages which share an id value (accepting that the value is in 2 different locations) into a single collection.
Then process the collection. |
does the collector node read messages from a Queue?
I must have missed that bit. |
Alright, alright, feed the messages via 2 MQInput nodes into a Collector node... 
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Insanity is the best defence. |
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| NealM |
| Posted: Tue Dec 17, 2013 4:59 pm Post subject: |
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Master
Joined: 22 Feb 2011
Posts: 230
Location: NC or Utah (depends)
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| ....or, if you expect all the matching messages to be already waiting on Q2 when you get the kickoff message on Q1, just change your flow to put your MQGet inside a loop that quits when your MQGet times out (and set a short timeout). |
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| fjb_saper |
| Posted: Wed Dec 18, 2013 10:52 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20768
Location: LI,NY
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Realize that you need to build your loop in such a way that it contains a propagate and the MQGet node is down on the propagate path... 
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