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| bigmq |
 Posted: Thu Sep 30, 2004 7:14 am Post subject: Real- time acknoledge response Message help! |
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Novice
Joined: 14 Sep 2004
Posts: 19
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Hi, all
I am developing a application by using MQ base Java, here are some problems i am struggling at, since i am a newbie for MQ, any helps for my dump questions will be so appeciated!
When there is a new message coming into the queue, how do i know its coming and start my getmessage program to get the message out of queue right away? Any sample codes.
Thanks |
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| siliconfish |
| Posted: Thu Sep 30, 2004 8:27 am Post subject: |
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Master
Joined: 12 Aug 2002
Posts: 203
Location: USA
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| You can set up the queue for TRIGTYPE=FIRST/EVERY/DEPTH (depending on ur situation) and set the Java program as the Triggered application. So when a message is put to a queue the queue manager generates a TRIIGGER message and your application can be triggered to pickup those messages from the application queue. |
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| jefflowrey |
| Posted: Thu Sep 30, 2004 8:35 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Yes, he could use triggers.
Or he could read the Application Programming Guide to find out the best practices for this Request/Reply Pattern, and use Get with WAIT.
_________________
I am *not* the model of the modern major general. |
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| bower5932 |
| Posted: Thu Sep 30, 2004 9:51 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| bigmq |
| Posted: Thu Sep 30, 2004 11:10 am Post subject: |
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Novice
Joined: 14 Sep 2004
Posts: 19
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Many thanks for everybody, by the way, jefflowrey, your company doesn't call me.
I thought i could put my java program into a unix cron and run it like every 5 minutes to get message out and put back a acknoledge message to queue. This sound stupid, right? |
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| siliconfish |
| Posted: Thu Sep 30, 2004 11:23 am Post subject: |
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Master
Joined: 12 Aug 2002
Posts: 203
Location: USA
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| Quote: |
| I thought i could put my java program into a unix cron and run it like every 5 minutes to get message out and put back a acknoledge message to queue. This sound stupid, right? |
I don't think its a stupid idea.
Actually people do have use cron jobs to remove the expired/information messages but they run them at the end of the day or long intervals.
I am not sure how the 5min interval matters.
But IMO its a matter of design whether to use MQ facilities available to you out of the box or use non MQ. |
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| jefflowrey |
| Posted: Thu Sep 30, 2004 11:38 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| bigmq wrote: |
| Many thanks for everybody, by the way, jefflowrey, your company doesn't call me. |
That's simply not true. My sales guy left you three messages, and you have not returned them.
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I am *not* the model of the modern major general. |
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| bower5932 |
| Posted: Thu Sep 30, 2004 11:46 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| bigmq wrote: |
| I thought i could put my java program into a unix cron and run it like every 5 minutes to get message out and put back a acknoledge message to queue. This sound stupid, right? |
If your program is going to be running like this, I would suggest going with the triggering. If messages are this infrequent, you could set up a trigger type of every. Your program would get kicked off immediately and it could send its acknowledge message. Who wants to wait 5 minutes if you don't have to? |
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