RE: [ubl-dev] UUID

["David RR Webber \(XML\)" <david@drrw.info>]

Chin, 
  
I don't think this is the best list to post these type of Q's vis
message handling. 
  
All the Qs you ask about delivery, redelivery dsigs, etc are already
taken care of in the ebXML messaging specification and you just need to
do delivery via a conformant ebMS to take care of all that. 
  
Vis the UUID algorithm - this was originally developed by Microsoft I
beleive for use in Windows registry - and subsequently published.  You
can get open source that implements it.  The UUID mechanism is also
used in ebXML Registry - so that contains existing functions that
compute those for you. 
  
DW
 

 -------- Original Message --------
Subject: Re: [ubl-dev] UUID
From: Chin Chee-Kai <cheekai@SoftML.Net>
Date: Sat, September 02, 2006 1:25 am
To: UBL-Dev <ubl-dev@lists.oasis-open.org>

I suppose "universally" has to exclude e-commerce to Pluto from now
on...

Anyway, the UUID follows a specific algorithm to ensure that IDs
generated by
this same algorithm are all unique anywhere in the world and across
time,
with only extremely small and insignificant chances of collision (2 or
more
generated IDs are the same).

So values stuffed into this field need to follow that algorithm in order
to 
achieve
uniqueness universally (within Earth).

In the original poster's question, he's right to say different 
transmissions of
the same business instance would use different UUID and same business
ID.
That's theoretically though.  There may be practical difficulties in
trying to
replace different values of UUID into the instance prior to
transmission, and
retain the overall integrity of the digitally-signed instance if digital

signature
is used.  Need to look a bit more into this aspect I think.

Best Regards,
Chin Chee-Kai

At 10:50 AM 2006-09-02 +0800, Tim McGrath wrote:
>I would say that it means parties exchanging these documents can be 
>assured they will never see a duplicate value for this identifier in any 
>other document instance.  in other words 'universally' means within their 
>universe of discourse.
>
>This includes other galaxies :-)
>
>
>G. Ken Holman wrote:
>
>>
>>Does anyone have insight on the scope of "universally" in the UBL definition?
>>
>>. . . . . . . . . . . . . . . Ken
>>
>
>--
>regards
>tim mcgrath
>phone: +618 93352228
>postal: po box 1289   fremantle    western australia 6160
>web: http://www.portcomm.com.au/tmcgrath
>
>
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