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Message
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| andy1989 |
 Posted: Wed Apr 03, 2013 5:02 am Post subject: Environment variables and MQOutput/Input |
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Novice
Joined: 07 Jan 2013
Posts: 22
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Hello,
My IBM WS MB: 7.0.0.2
I have the problem similar to http://www.mqseries.net/phpBB/viewtopic.php?p=227269&sid=f4630cc31feb22b29531ebbc25724b96
I have to set the destination dynamically (with Environment.Variables ) and it works fine for below flow:
InputNode --> ComputeNode --> SOAPRequest --> OutputNode,
[Compute Node has Compute Node set to 'All']
But I have to put the Queue before my SOAPRequest:
InputNode --> ComputeNode --> MQOutput
and
MQInput --> ComputeNode --> SOAPRequest -->OutputNode
[for both Compute nodes - compute mode is set to 'All']
Unfortunately my Environments and LocalEnvironments variables disappeared after MQInput node.
( Logger with ${Environment} after my MQInput is empty )
Message flows are in the same execution group.
Is there any additional option for MQ to enable usage of Environment variables?
Andy |
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| lancelotlinc |
| Posted: Wed Apr 03, 2013 5:13 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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In Compute node Properties->Compute Mode, you must select "LocalEnvironment and Message" and also in your ESQL code, assign OutputLocalEnvironment.
The InfoCentre provides a wealth of information in this area. Training provides personal guidance, if you have difficulty understanding the documentation in the InfoCentre.
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| andy1989 |
| Posted: Wed Apr 03, 2013 5:45 am Post subject: |
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Novice
Joined: 07 Jan 2013
Posts: 22
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But what is the difference between my 2 solution?
I put the trace nodes 'before' and 'after' queue:
Input --> Trace1 --> MQOutput
MQIput --> Trace2 --> Output
and in Trace1 there are both LocalEnvironment and Environment variables but in Trace2 there aren't.
Andy |
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| smdavies99 |
| Posted: Wed Apr 03, 2013 5:48 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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The Envoronment.* tree is NOT subject to any of the Compute node options. An Environment tree is created at the InputNode (where the flow starts working) and remains with it until the thread has ended.
If you put put a TraceNode right after the MQInput Node 'out' termnial and code it to display
${Environment}
It won't show very much. Well, nothing actually because you have not used it.
Try saving something into it before displaying it with a trace node. you might be pleasantly surprised by what you see.
As the previous post indicates some formal training will help you understand what is going on as well as allowing you to try all sorts of things out in a nice safe environment (pun intended)
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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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| andy1989 |
| Posted: Wed Apr 03, 2013 6:24 am Post subject: |
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Novice
Joined: 07 Jan 2013
Posts: 22
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| Quote: |
| In Compute node Properties->Compute Mode, you must select "LocalEnvironment and Message" and also in your ESQL code, assign OutputLocalEnvironment. |
I've changed my flow after your suggestion:
Environment --> LocalEnvironment
Compute mode "All" --> "LocalEnvironment and Message"
Unfortnately result the same:
Trace1:
| Code: |
LocalEnvironment:
( ['MQROOT' : 0x115729ab0]
(0x01000000:Name):Variables = (
(0x03000000:NameValue):Operation = 'myOperation' (CHARACTER)
)
) |
Trace2:
LocalEnvironment:
[empty] |
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| lancelotlinc |
| Posted: Wed Apr 03, 2013 6:28 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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LocalEnvironment/Environment does not flow through queues, unless you explicitly code LocalEnvironment into your payload then decode it into the LE on the second flow.
This is basic information. Please read the InfoCentre.
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| mgk |
| Posted: Wed Apr 03, 2013 6:30 am Post subject: |
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Padawan
Joined: 31 Jul 2003
Posts: 1642
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That's because the Environment and LocalEnvironment trees are specific to a single instance of a flow, and are not shared between the two threads running in your case. If you want to pass data from one to the other you need to use a SHARED variable, the V8 the global cache or something similar.
Kind regards,
_________________
MGK
The postings I make on this site are my own and don't necessarily represent IBM's positions, strategies or opinions. |
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| andy1989 |
| Posted: Thu Apr 04, 2013 4:11 am Post subject: |
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Novice
Joined: 07 Jan 2013
Posts: 22
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Thank you for your tips,
I will try to reorganize my message structure.
Andy |
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