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| chrisgclark |
 Posted: Thu Feb 18, 2010 3:03 am Post subject: how did i generate a new MQ msgid in esql |
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Apprentice
Joined: 26 Mar 2009
Posts: 35
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Hi,
Any ideas how to generate a new MQ msgIDs in ESQL. I have a coding problem where i need a unique number in addition to the msgID that is in the inbound message.
I tried RAND() function, but as my flow is multi-threaded I found occasionally the value was the same. If I can generate msgIDs I would hope these were always unique.
Thanks.
Chris |
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| Gaya3 |
| Posted: Thu Feb 18, 2010 3:18 am Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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how about using timestamp.
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Gayathri
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Do Something Before you Die |
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| fjb_saper |
| Posted: Thu Feb 18, 2010 3:22 am Post subject: Re: how did i generate a new MQ msgid in esql |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| chrisgclark |
| Posted: Thu Feb 18, 2010 3:33 am Post subject: |
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Apprentice
Joined: 26 Mar 2009
Posts: 35
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Hi Gaya3, I tried using timestamp but as my flow is multithreaded I found occassions where the same timestamp was used, even down to milli seconds (i could see same timestamp being used in user trace output).
fjb_saper, I'll try using UUIDASCHAR.
Many thanks for the suggestions. |
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| smdavies99 |
| Posted: Thu Feb 18, 2010 3:37 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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This has been discussed quite comprehensively here before.
As I recall, only part of the UUID will be the Unique bit. Take that part and convert it to a BLOB then it can be used as the MQMD.MsgId//CorrelId etc as required byt the flow.
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Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| fjb_saper |
| Posted: Thu Feb 18, 2010 3:38 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| chrisgclark wrote: |
Hi Gaya3, I tried using timestamp but as my flow is multithreaded I found occassions where the same timestamp was used, even down to milli seconds (i could see same timestamp being used in user trace output).
fjb_saper, I'll try using UUIDASCHAR.
Many thanks for the suggestions. |
As you were talking about something on top of msgID I would have thought you'd be more interested in UUIDASBLOB... 
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| chrisgclark |
| Posted: Thu Feb 18, 2010 3:47 am Post subject: |
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Apprentice
Joined: 26 Mar 2009
Posts: 35
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| my broker code requires a unique string (in addition to msg id) so either char or blob would do here |
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