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Message
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| bigmq |
 Posted: Tue Jan 18, 2005 6:46 am Post subject: how to delete message in the queue after i get it? |
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Novice
Joined: 14 Sep 2004
Posts: 19
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When i use mqGet method, i thought the message should be deleted automatically, but it is not, why? and how I could delelte them after i get them?
Thanks a million |
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| bower5932 |
| Posted: Tue Jan 18, 2005 6:53 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| If you 'get' the message, it is removed from the queue. My guess would be that you either browsed the message or got it inside of a unit of work and didn't commit. |
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| bigmq |
| Posted: Tue Jan 18, 2005 8:39 am Post subject: Thank you bower |
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Novice
Joined: 14 Sep 2004
Posts: 19
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I think i just use browse, but i did get message out and make a file, why?
and how i "really" get the message out of the queue, and delete them after i get, change some options? or what?
Many thanks |
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| jefflowrey |
| Posted: Tue Jan 18, 2005 8:40 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Don't use "browse".
"browse" means "leave messages on the queue".
_________________
I am *not* the model of the modern major general. |
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| bigmq |
| Posted: Tue Jan 18, 2005 8:54 am Post subject: |
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Novice
Joined: 14 Sep 2004
Posts: 19
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Yes, sir, i do use get instead of browse:
myQueue.get(myMessage, gmo);
and these options are used:
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options = MQC.MQGMO_WAIT | MQC.MQGMO_BROWSE_FIRST;
Is there anything wrong?
Thanks |
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| jefflowrey |
| Posted: Tue Jan 18, 2005 9:03 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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If your options say "BROWSE_FIRST", then how are you not using "browse"?
_________________
I am *not* the model of the modern major general. |
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| zpat |
| Posted: Tue Jan 18, 2005 9:04 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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There is not a browse MQI call - there is only a MQGET call (to retrieve messages) with options.
You are asking for browse on your get options by the look of your code.
I recommend coding WAIT, CONVERT, FAIL_IF_QUEISCING on all MQGETs. |
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| bigmq |
| Posted: Tue Jan 18, 2005 9:46 am Post subject: |
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Novice
Joined: 14 Sep 2004
Posts: 19
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all right, i changed my options to
gmo.options = MQC.MQGMO_WAIT + MQC.MQGMO_CONVERT;
but now i found another problem: i only can get the last message out in the queue, other messages are still sitting inside the queue. What happened?
Thanks |
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| JT |
| Posted: Tue Jan 18, 2005 10:12 am Post subject: |
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Padawan
Joined: 27 Mar 2003
Posts: 1564
Location: Hartford, CT.
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Messages are not retrieved from the queue en masse, but rather, one at a time.
You need to loop through your code, until you reach the condition 'MQRC_NO_MSG_AVAILABLE'. |
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| bower5932 |
| Posted: Tue Jan 18, 2005 10:35 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| kirani |
| Posted: Tue Jan 18, 2005 11:24 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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Oh .. and don't forget the MQ documentation. Take a look at chapter 10 in Application Programming Guide.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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