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| MQGET Options |
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| krishs |
 Posted: Wed Feb 06, 2002 12:32 am Post subject: |
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Newbie
Joined: 03 Feb 2002
Posts: 8
Location: Chennai
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From a Queue, I would like to get message with specific correlation id say =0 ,from a thread without sending any message.
I am setting the correlationid using following piece of code.
..............
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MQMessage retrievedMessage = new MQMessage();
for ( int i = 0 ; i < retrievedMessage.correlationId.length ; i++ )
retrievedMessage.correlationId[ i ] = 0 ;
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.matchOptions = MQC.MQMO_MATCH_CORREL_ID;
tempQueue.get(retrievedMessage, gmo);
..................
..................
But I am getting a Message whose correlationId not = 0.
Can any one try this get a solution.
Thanx in advance.
Krishnan |
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| StefanSievert |
| Posted: Wed Feb 06, 2002 9:56 am Post subject: |
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Partisan
Joined: 28 Oct 2001
Posts: 333
Location: San Francisco
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Krishnan,
my first impulse is to suggest that you use a correlId other then 0. MQCI_NONE is defined as all 0's, which means that correlId will be ignored on your GET, giving you the first available message on the queue.
I wouldn't be surprised if this is the cause for your application's behavior.If it is, then it works just as designed. 
HTH,
Stefan
_________________
Stefan Sievert
IBM Certified * MQSeries
[ This Message was edited by: StefanSievert on 2002-02-06 09:57 ] |
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| krishs |
| Posted: Mon Feb 11, 2002 5:56 am Post subject: |
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Newbie
Joined: 03 Feb 2002
Posts: 8
Location: Chennai
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Dear Stefan,
Thanx a lot for your support. I would like to wait for a predefined correlationid, How can i choose a unique predefined correlationid.
This will be much useful for me.
Kind Rgds,
Krishs
| Quote: |
On 2002-02-06 09:56, StefanSievert wrote:
Krishnan,
my first impulse is to suggest that you use a correlId other then 0. MQCI_NONE is defined as all 0's, which means that correlId will be ignored on your GET, giving you the first available message on the queue.
I wouldn't be surprised if this is the cause for your application's behavior.If it is, then it works just as designed.
HTH,
Stefan
_________________
Stefan Sievert
IBM Certified * MQSeries
[ This Message was edited by: StefanSievert on 2002-02-06 09:57 ]
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| krishs |
| Posted: Mon Feb 11, 2002 5:57 am Post subject: |
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Newbie
Joined: 03 Feb 2002
Posts: 8
Location: Chennai
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Dear Stefan,
Thanx a lot for your support. I would like to wait for a predefined correlationid, How can i choose a unique predefined correlationid.
This will be much useful for me.
Kind Rgds,
Krishs
| Quote: |
On 2002-02-06 09:56, StefanSievert wrote:
Krishnan,
my first impulse is to suggest that you use a correlId other then 0. MQCI_NONE is defined as all 0's, which means that correlId will be ignored on your GET, giving you the first available message on the queue.
I wouldn't be surprised if this is the cause for your application's behavior.If it is, then it works just as designed.
HTH,
Stefan
_________________
Stefan Sievert
IBM Certified * MQSeries
[ This Message was edited by: StefanSievert on 2002-02-06 09:57 ]
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| bob_buxton |
| Posted: Tue Feb 12, 2002 1:14 am Post subject: |
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Master
Joined: 23 Aug 2001
Posts: 266
Location: England
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You can define anything you like to be the correlid though you should probably avoid values that could be generated as meesage ids (see programming reference).
If you want an already defined constant you could use MQCI_NEW_SESSION
Bob |
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| mqonnet |
| Posted: Thu Feb 21, 2002 1:07 pm Post subject: |
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Grand Master
Joined: 18 Feb 2002
Posts: 1114
Location: Boston, Ma, Usa.
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Hi Krish,
I would go with specifying MQPMO_NEW_CORREL_ID in the put message options. This option forces the Queue manager to generate a New Unique Correl id. After the Mqput call, you could copy the correl id value returned by the QM in either a variable or an array(depending on your apps' requirement), and then supply this value on the Mqget call to retrieve the message with this specific Correl id.
Cheers.
Kumar
_________________
IBM Certified WebSphere MQ V5.3 Developer
IBM Certified WebSphere MQ V5.3 Solution Designer
IBM Certified WebSphere MQ V5.3 System Administrator |
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