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| Group of Messages from a queue |
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| kartkris |
 Posted: Sun May 05, 2002 3:55 pm Post subject: |
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Newbie
Joined: 20 Apr 2002
Posts: 3
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Hi,
I am writing a java bean program to get group of messages from the queue.Nor i am using group id or correlation id.I am just writing a for loop in bean program to continously fetch the group of messages.
For example.,if there are 10 messages & i want to get 3 messages.,it's been possible.I am successful at that.But say., if i want to get the messages starting from 10th index.,message no.10,11 & 12.It's not being possible.,it's fetching first 3 or from 4th row.
I don't know how to get group of messages from the particular index No. which we pass.How is this possible?.Please clarify....
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| kolban |
| Posted: Sun May 05, 2002 7:17 pm Post subject: |
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Grand Master
Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA
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Look into the queue browsing technology. You can browse from the first message until you get to the index you want and then do destructive gets to obtain the required messages.
MQSeries starts the browse from the first message and has no capability to "go to" an arbitrary message so performance will degrade as a function of the depth of the index.
For example, if you have a 1000 messages on the queue, it will be quick to get 10,11 & 12 but slower (relatively) to get 990, 991 and 992.
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