RE: [legalxml-courtfiling] Globally unique identifiers - approach

MHonArc v2.5.0b2 -->
















legalxml-courtfiling message






[Date Prev]
 | [Thread Prev]
 | [Thread Next]
 | [Date Next]

--

[Date Index]
 | [Thread Index]
 | [List Home]








Subject: RE: [legalxml-courtfiling] Globally unique identifiers - approach




From: "Cusick, James" <>
To: "Cabral, James E." <>,<>
Date: Thu, 12 May 2005 18:51:37 -0400











Jim,
 
ok - I understand, I don't see any 
problem in having the timestamp component, there is going to be one and only one 
time recorded by a given GUID so no problems there, as for it being "old" on 
some artifacts I really don't see that as an issue as no one would ever access 
the timestamp individually from within the GUID.
 
Regards,
james
 



From: Cabral, James E. 
[mailto:]
Sent: Thu 5/12/2005 6:30 PM
To: 
Cusick, James; 
Cc: John 
Greacen
Subject: RE: [legalxml-courtfiling] Globally unique 
identifiers - approach



James,
 
I did not mean to suggest that the proposed approach would 
not work.  I just wondered whether there was any value in having the 
timestamps for things that are static. I was unclear, after my first 
reading of the RFC, whether any components of the UUID, such as the 
timestamp, were optional.  After re-reading it, it appears that the time 
timestamp is a required component.  
 
  jim
 



From: Cusick, James 
[mailto:]
Sent: Thursday, May 12, 2005 2:42 
PM
To: Cabral, James E.; 

Cc: John 
Greacen
Subject: RE: [legalxml-courtfiling] Globally unique 
identifiers - approach



Jim, I would propose that this approach will work for all 
artifacts or objects no matter when or how often they are created or accessed. 
Can you give me a scenario in which this approach does not work? For things that 
do not change often the ID will still be unique even though the timestamp is 
from some distant past moment. Did I miss your point? regards, 
james
 


  
  
  From: Cabral, James E. 
  [mailto:]
Sent: Wednesday, May 11, 2005 8:53 
  PM
To: Cusick, James; 
  
Cc: John 
  Greacen
Subject: RE: [legalxml-courtfiling] Globally unique 
  identifiers - approach


  
  James,
   
  That approach seems appropriate for identifying things 
  that occur at a specific time, e.g. Filing Identifiers, but do we 
  need a timestamp for things that do not change often (e.g. FilingAssembly or 
  FilingReview ID)?  
   
    
  jim

  
  
  From: Cusick, James 
  [mailto:]
Sent: Wednesday, May 11, 2005 
  12:41 PM
To: 
Cc: 
  John Greacen
Subject: [legalxml-courtfiling] Globally unique 
  identifiers - approach


  
  John 
  and all,
   
  At 
  the New Orleans meeting I agreed to propose an approach to generating globally 
  unique identifiers. After searching around on this topic I would like to 
  recommend using UUIDs as per the IETF DRAFT RFC. This approach requires NO 
  global coordination.
   
  Please see:
  http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-05.txt
   
   
  This 
  RFC is currently in draft status and is based on Unique ID generation 
  technique used in Open Software Foundation's Distributed Computing 
  Environment. The RFC guarantees that ID's generated using the 
  recommended algorithms will be unique across 
  space and time.
   
  This 
  RFC specifies 4 algorithms to generate universally unique ID's.  The 
  following subset is recommended for LegalXML 
  standards:
   
    1. System timestamp up to a 100 nanoseconds
   
    2. MAC address of the machine where UUID is 
  generated
   
    3. Use of Random or pseudo random numbers
   
   
  Finally, the RFC contains C code sample on how to generate UUID's based 
  on the generation algorithms listed above. 

  Please let me know what you think and how you would like to see this 
  phrased within Blue.
   
  Regards,
  james
   












[Date Prev]
 | [Thread Prev]
 | [Thread Next]
 | [Date Next]

--

[Date Index]
 | [Thread Index]
 | [List Home]