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| Modify priority and rollback |
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| wellwisher |
 Posted: Thu Dec 09, 2010 10:13 pm Post subject: Modify priority and rollback |
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Newbie
Joined: 09 Dec 2010
Posts: 2
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Hi all,
I am using a Java MQSeries client.
My requirement is simple. I want to modify priority (reduce mainly) of a message before rolling it back.
Can this be done? Please let me know if I need to post more details (versions, etc..).
Read on if you wish to know the reason behind using this approach.
1. There is queue from which I read all messages.
2. A thread consumes the message, processes it and sends it down to one of multiple systems (over a direct network connection) depending on the message's properties.
3. If the downstream system is unavailable, I wish to rollback the message and retry later.
4. At the same time I want to reduce its priority so that other messages destined for other available systems can be processed.
Thanks,
Santosh. |
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| Mr Butcher |
| Posted: Thu Dec 09, 2010 10:20 pm Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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you can not change a message content or message header during rollback.
to change priority, you have to mqget, change priority, mqput and commit.....
maybe its worth using a second queue to put these messages to and process that queue later. but in that case you also have to mqget and mqput.
_________________
Regards, Butcher |
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| wellwisher |
| Posted: Fri Dec 10, 2010 12:19 am Post subject: |
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Newbie
Joined: 09 Dec 2010
Posts: 2
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Thanks so much for reply!
Probably best to try another retrial mechanism as you imply.
Thanks again!
Santosh. |
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