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| Visual Edit -- Forwarding Messages |
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| ljbeck |
 Posted: Tue Apr 26, 2005 5:43 am Post subject: Visual Edit -- Forwarding Messages |
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Newbie
Joined: 30 Dec 2004
Posts: 4
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I am using MQ Visual Edit and I have a question about the Forward message feature.
In the process of forwarding messages there is a dialog that displays: "Warning: Are you sure you want to forward (delete then insert) the selected item? ..."
My concern is around the "delete then insert".
What happens to messages if the destination queue cannot be written to for some reason?
Are the messages lost? ( I assume not but that is a dangerous word)
I just need to ensure that the messages are safe, somewhere, and that I can get them to the proper destination at some point.
Thanks in advance for your time |
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| RogerLacroix |
| Posted: Tue Apr 26, 2005 6:49 am Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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Hi,
| Quote: |
I am using MQ Visual Edit and I have a question about the Forward message feature.
In the process of forwarding messages there is a dialog that displays: "Warning: Are you sure you want to forward (delete then insert) the selected item? ..."
My concern is around the "delete then insert". |
The reason I put the line of "delete then insert" is because I want people understand that MQ Visual Edit is behaving like any other normal MQ application (it's not doing any tricks or anything special).
The logic is
| Code: |
while (more messages)
get message under syncpoint
build new message from retrieved message
put message under syncpoint
commit
endWhile |
So, MQ Visual Edit is careful about not dropping messages if the put fails. If an exception is thrown the a rollback is executed and then the function termintes (with a popup window about the error).
If you wanted to be absolutely safe, then you could 'Backup' the messages from Queue 'A' to a file then 'Restore' the messages from a file to Queue 'B'. (The Backup & Restore write & read to/from a VEQ that contains both the MQMD & message data.).
Hope that helps.
Regards,
Roger Lacroix
Capitalware Inc.
_________________
Capitalware: Transforming tomorrow into today.
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| ljbeck |
| Posted: Wed Apr 27, 2005 4:25 am Post subject: |
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Newbie
Joined: 30 Dec 2004
Posts: 4
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As I suspected. You have things well under control.
The message just made me a little wary.
Thanks for your timley response. |
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