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Message
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| paribok |
 Posted: Mon Aug 05, 2013 9:22 pm Post subject: Setting Message Properties on msg published to a topic |
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Novice
Joined: 05 Aug 2013
Posts: 13
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Hi,
I'm trying to make the selectors on subscriptions work (using zOS MQ 7.1, COBOL). Hoping someone can shed some light. So this is what I'm doing. I'm setting a property name called 'ZIP' with a value of '9999'. I'm doing this because I want to set some subscriptions to get publications only if ZIP is = '9999'.
1. MQOPEN on topic
2. MQCRTMH to get message handle
3. MQSETMP - using the handle from #2
4. MQPUT to topic
code for MQSETMP :
SET MQCHARV-VSPPT TO ADDRESS OF MP-PROP-NAME ** where MP-PROP-NAME is the property name
MOVE LENGTH OF MP-PROP-NAME TO MQCHARV-VSLENGTH
MOVE '9999' TO MP-VALUE
MOVE LENGTH OF MP-VALUE TO MP-VALUELENGTH
MOVE MQPD-USER-CONTEXT TO MQPD-CONTEXT
MOVE MQTYPE-BYTE-STRING TO MP-TYPE
CALL MQSETMP USING QMGR-HANDLE
MSG-HANDLE ** FROM MQCRTMH CALL
SETMSGOPTS ** CMQSMPOV
NAME *** CMQCHRVV
PROPDESC
MP-TYPE
MP-VALUELENGTH
MP-VALUE
COMPCODE
REASON
the call gives compcode of zeroes.
There are 2 subscriptions to the topic (ie 2 different queue destinations) The only difference between the 2 is that subscriber queue#2 has selector of 'usr.ZIP=''9999''' on it (im expecting it to be in the usr folder as I had set the context to user context).
subscriber queue#1 is getting the publication. subscriber queue #2 is not.
I tried both "Compatibility" and "Message Properties" Properties for the subscription.
When I browse the publication (via mqexplorer) that got delivered to queue #1, I can't see the message property ZIP that I had set when publishing.
Would appreciate any feedback ?
Thanks !! |
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| mqjeff |
| Posted: Tue Aug 06, 2013 6:41 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| "usr.ZIP" is an MQRFH2 folder path, not a message property path, as far as I understand it. |
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| hughson |
| Posted: Wed Aug 07, 2013 2:32 am Post subject: Re: Setting Message Properties on msg published to a topic |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| paribok wrote: |
I'm setting a property name called 'ZIP' with a value of '9999'.
subscriber queue#2 has selector of 'usr.ZIP=''9999''' on it (im expecting it to be in the usr folder as I had set the context to user context). |
If you set the property as ZIP, why not subscribe for it as ZIP?
If you think your property may have ended up somewhere else, you could always browse a copy of the message that was delivered to see where your property went. The MQ Explorer will show you properties, or various other samples and tools will too.
Cheers
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| hughson |
| Posted: Wed Aug 07, 2013 2:39 am Post subject: Re: Setting Message Properties on msg published to a topic |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| paribok wrote: |
(im expecting it to be in the usr folder as I had set the context to user context)
MOVE MQPD-USER-CONTEXT TO MQPD-CONTEXT |
Have just worked out what you were referring to by the statement in brackets.
MQPD-USER-CONTEXT has no bearing on the folder that the property goes in. It indicates that the property you have set would be passed by an application using MQOO_SAVE_ALL_CONTEXT and then MQPMO_PASS_ALL_CONTEXT - a technique used by routing applications to pass over various fields in the MQMD from the original message.
You can read more about context in Message context.
This setting is not doing what you think it is doing. Try subscribing for just ZIP rather than usr.ZIP.
Cheers
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| paribok |
| Posted: Wed Aug 07, 2013 4:01 pm Post subject: |
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Novice
Joined: 05 Aug 2013
Posts: 13
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Thanks Morag! (btw I attended your sessions at this year's Impact  you were great! thanks so much for all those info!!)
So I did find the problem (not without help)
It was a combination of things. First, I wasn't getting the entire value of my message handle (duh) - I had defined the message handle as s9(9) binary by mistake (copy/paste) so I wasn't getting the full handle value. Once I changed that, then I was getting the correct handle. When I used it though in MQPMO-ORIGINALMSGHANDLE, MQPUT was complaining (2046) about my MQPMO OPTIONS. Then learned later that it shouldnt be included in the MQPMO OPTIONS computation. So now, with the message handle for the property, and the MQPMO VERSION set to 3, and MQPMO-ACTION set to MQACTP-NEW, my MQPUT works and I see the property in the delivered message via MQExplorer.
But now ... so subscriber #1 gets a publication because it just subscribes to the topic, no selectors. Subscriber #2 subscribes to the same topic, but has the selector of ZIP = '94101' (so i'd like it to get the publication only if property ZIP is = 94101) , and it's still not getting it's message.
Browsed message property in MQExplorer, I see the Name as ZIP but Value has [B@64386438 , instead of '94101' .  |
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| paribok |
| Posted: Wed Aug 07, 2013 4:21 pm Post subject: |
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Novice
Joined: 05 Aug 2013
Posts: 13
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| I am putting a value of '94101' when I call MQSETMP. |
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| bruce2359 |
| Posted: Wed Aug 07, 2013 5:51 pm Post subject: Re: Setting Message Properties on msg published to a topic |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| paribok wrote: |
MOVE '9999' TO MP-VALUE
MOVE LENGTH OF MP-VALUE TO MP-VALUELENGTH
...
I am putting a value of '94101' when I call MQSETMP.
...
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What kind of field is MP-VALUE? What is its PIC?
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| paribok |
| Posted: Wed Aug 07, 2013 8:55 pm Post subject: |
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Novice
Joined: 05 Aug 2013
Posts: 13
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| mqjeff |
| Posted: Thu Aug 08, 2013 6:35 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| Is MQTYPE-BYTE-STRING the right thing to set for PIC x(5)? |
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| paribok |
| Posted: Thu Aug 08, 2013 7:34 am Post subject: |
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Novice
Joined: 05 Aug 2013
Posts: 13
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Yay that was it Jeff !! I didn't realize there is MQTYPE-STRING. I used that instead and it works now !!! 
You guys are awwweeeesome!! |
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