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MQSeries.net Forum Index » General IBM MQ Support » Retreive Messages in a Group

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salmanrs
PostPosted: Thu Jun 27, 2002 12:50 pm    Post subject: Retreive Messages in a Group Reply with quote

Newbie

Joined: 13 Jun 2002
Posts: 6
Location: Michigan
Hi All,
I need to retreive messages based on a groupid in a loop. My question is whether there is any way to know if the current msg retreived is the last one. Could anybody throw in some pointers with respect to java.

Thanks in advance
Salman
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mgrabinski
PostPosted: Sat Jun 29, 2002 4:32 am    Post subject: Reply with quote

Master

Joined: 16 Oct 2001
Posts: 246
Location: Katowice, Poland
Specify two options with MQGET:
MQGMO_LOGICAL_ORDER
and
MQMO_MATCH_GROUP_ID (along with proper group id setting in the MQMD)

and check GroupStatus filed of MQGMO structure to see if it = MQGS_MSG_IN_GROUP

HTH
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bduncan
PostPosted: Sat Jun 29, 2002 7:28 am    Post subject: Reply with quote

Padawan

Joined: 11 Apr 2001
Posts: 1554
Location: Silicon Valley
Take a look at this program in the software repository:
http://www.mqseries.net/pafiledb203/pafiledb.php?action=viewfile&fid=22&id=2

This illustrates how to get a group of messages from the queue. You'll notice that there is a parameter LAST_MSG_IN_GROUP that it checks for to see the group is exhausted. There's also a corresponding putgroup.c program in the repository. They're written in C, but you can easily see the logic, and replicate it in Java...
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