Re: [codelist-comment] A Question re: the status of supporting derivable codelists

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

At 2009-11-06 10:52 -0500, Deborra J Zukowski wrote:
>Greetings,
>According to the presentation given at the New York XML SIG (May 
>2007), the ability to derive code lists was set aside (from version 
>0.4) so that version 1.0 of Genericode could be formalized more 
>quickly. The presentation mentioned that code list derivation 
>mechanisms would be added back in Genericode 2.0. What are the plans 
>for the Genericode 2.0 work.
>
>Why it matters:
>I believe that handling codes, as proposed by this subcommittee is 
>relevant to my work.  However, I need to be able to justify the 
>added "complexity" over and above the mechanisms for extending 
>enumeration proposed by 
><http://www.ibm.com/developerworks/library/x-extenum/>http://www.ibm.com/developerworks/library/x-extenum/. 
>I cannot make a strong case, given Genericode version 1.0, other 
>than to say the version 2.0 will provide a way to both extend and 
>restrict, and so is a more complete method for managing code lists. 
>Hence, I need to know expectations for when 2.0 becomes (or is 
>planned to become) a reality.

Thank you, Deb, for this input into the work of the Code List 
Representation technical committee.

Note that until extension and restriction and derivation concepts are 
conceived of and expressed in a version 2.0 of genericode, the OASIS 
context/value association (CVA) file format can realize such concepts 
in the application of (rather than the definition of) code lists in 
document contexts of XML documents.  This specification is currently 
out for public review:

   http://lists.oasis-open.org/archives/codelist/200910/msg00005.html

Regarding your citation of extending XSD enumeration proposed by the 
paper on the DeveloperWorks, there are projects using code lists that 
find the XSD approach unnecessarily restricts their application and 
are, thus, unsuitable for code lists.  An example is the Universal 
Business Language project where XSD files are so very restrictive in 
their application and limited in their suitability that every XSD 
code list enumeration is being removed from UBL 2.0 in the creation 
of UBL 2.1, being replaced with an application of CVA files and 
genericode files based on the work of our committee.

We look forward to your feedback and to any input you may have to the 
development of genericode 2.0.

. . . . . . . . . . . . Ken


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