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| Reading and Removing Messages based on messages processed |
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| bruce2359 |
 Posted: Thu Feb 10, 2011 4:17 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9471
Location: US: west coast, almost. Otherwise, enroute.
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MQSeries.net wrote:
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| Let me put my question in different way, I need to read a message, process it without saving anywhere. If succeeds, remove from queue otherwise keep it on queue. |
Yes, this is the exact purpose of getting a message MQGMO_SYNCPOINT.
A message read in syncpoint will not be visible to another application, but remains in the queue - within an incomplete unit of work..
In syncpoint (another name for Unit of Work), if your business process succeeds, issue the MQCMIT call to cause the message to be deleted from the queue. If your business process fails, issue the MQBACK call to cause the message to be restored (and visible) to the queue.
A DB update and an MQ call can be in the same unit of work.
This is all well documented in the WMQ Application Programming Guide and WMQ Application Programming Reference.
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| reg.2008 |
| Posted: Wed May 11, 2011 7:35 am Post subject: Any .net implementation example |
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Newbie
Joined: 09 Feb 2011
Posts: 7
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Hi, I'm kind of convinced after researching different options. I would like to use SyncPoint, MQCmit and MQBACK.
Looking for any resource where i can get .Net example of implementing syncpoint. I came across to different examples of different languages but not in .Net.
Any help would be much appreciated. |
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| fjb_saper |
| Posted: Wed May 11, 2011 9:39 am Post subject: Re: Any .net implementation example |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| reg.2008 wrote: |
Hi, I'm kind of convinced after researching different options. I would like to use SyncPoint, MQCmit and MQBACK.
Looking for any resource where i can get .Net example of implementing syncpoint. I came across to different examples of different languages but not in .Net.
Any help would be much appreciated. |
Read up in the .NET manual the chapter about transactions.
You probably will need to run the distributed transaction manager from MicroSoft... 
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| reg.2008 |
| Posted: Wed May 11, 2011 11:57 am Post subject: I think you are not getting what am i trying to get |
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Newbie
Joined: 09 Feb 2011
Posts: 7
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Hi I'm not talking about .net transaction manager here. IBM Queue has .net interface (dll's) to collaborate with queue's. Need that sample code in any .net language. I got one reference from stack overflow web site - http://www.redbooks.ibm.com/redbooks/pdfs/sg247012.pdf
Hope this will help others too. I won't mind if anybody else want to share other resource links or samples  |
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| fjb_saper |
| Posted: Wed May 11, 2011 8:48 pm Post subject: Re: I think you are not getting what am i trying to get |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| reg.2008 wrote: |
Hi I'm not talking about .net transaction manager here. IBM Queue has .net interface (dll's) to collaborate with queue's. Need that sample code in any .net language. I got one reference from stack overflow web site - http://www.redbooks.ibm.com/redbooks/pdfs/sg247012.pdf
Hope this will help others too. I won't mind if anybody else want to share other resource links or samples |
The link you referenced is quite old (MQ V 5.3  ) however you mean to tell me that you do not care about chapter 13.2 of the pdf that specifically addresses distributed transactions in the .NET environment? It talks about the .net transaction management as done by COM and MSTC...
Have fun
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| exerk |
| Posted: Wed May 11, 2011 11:37 pm Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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There are sample programmes, and their source code, within the tools directory of the WMQ install (if you elected to install them). They give basic PUT/GET samples (plus others) and with the Info Centre and other sources it should not be too difficult to strap in the additional calls.
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