Re: [codelist] CVA scope creep?

["Anthony B. Coates (DES)"<anthony.coates@documentengineeringservices.com>]

It's a good question.  It's definitely scope creep in one sense, the sense  
that it takes CVA beyond the bounds of code lists, and beyond the scope of  
the CLRTC.  At the same time, it's obvious that it's exactly what users  
would want to do.  Why should they care about what our internal OASIS  
scope boundaries are?

Still, as an OASIS TC, we have to give some thought to scope.  I seem to  
remember we discussed this issue once before, and I suggested two  
possibilities:

  1) create a separate OASIS TC to carry forward the extension of CVA into  
something bigger, with a scope beyond code lists.  That would parallel the  
way the CLRTC was spun off the UBL TC;
  2) allow for this functionality in the CVA Schema, but document it  
non-normatively (at least in an official sense) in an appendix to its  
spec, so that the normative part is within scope.

Perhaps someone from OASIS could suggest what is best.  Mary?

Cheers, Tony.

On Sun, 26 Apr 2009 01:22:14 +0100, G. Ken Holman  
<gkholman@cranesoftwrights.com> wrote:

> Hi folks,
>
> With the advent coming of W3C Schema 1.1, there is an opportunity to add  
> to the scope of context/value association (CVA) files ... but I'm  
> worried about scope creep.
>
> Right now a CVA file is only associated contexts with code list values.
>
> It would be easy to add to CVA files the association of contexts with  
> arbitrary values expressed in XPath.  Such values could be requirements  
> such as qualifying data types ... for example by imposing a string  
> length:
>
>     string-length(.) = 35
>
> In a W3C Schema 1.1 implementation of CVA file this would translate into  
> a combination of enumerations, facets and assertions.  It would mean  
> being able to express all of the requirements in one file rather than a  
> combination of files.
>
> Similarly, in a Schematron implementation of CVA file this would allow  
> one to express all of the requirements in one file rather than a  
> combination of files.
>
> I've completed the prototyping and it meshes well with the current  
> design.  But I'm at the stage where I can easily unwind my changes if  
> you think this is a non-starter.  I don't want to waste more of my time  
> on it if the committee feels strongly it is out of scope.
>
> Managing all of one's context/value associations in a single declarative  
> fashion sounds attractive to me, but do you believe going beyond the  
> association of code lists going beyond our scope?  Do you need to see a  
> more polished prototype before offering an opinion?
>
> Thanks for your thoughts on this!  If I don't hear any disagreements,  
> I'll prepare the next draft for committee review.  If Tony gets his  
> genericode change proposals posted soon, then we an cover off both in  
> our first return call (not yet scheduled).
>
> . . . . . . . . . . Ken
>
> p.s. please let me know if anyone doesn't have Skype with which to  
> participate in committee conference calls.  In the UBL committee we've  
> been having a lot of success in conference calls and for remote  
> participation in our face-to-face plenary using http://www.yugma.com for  
> desktop broadcast.  The Skype Edition is a free download and install  
> (third column on home page) and need only be downloaded by those who are  
> sharing their screen with others ... if you plan only to view someone  
> else's screen, there is nothing to download in advance.  You just sign  
> into a web page without downloading anything and you get to view the  
> host's screen.
>
> --
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> G. Ken Holman                 mailto:gkholman@CraneSoftwrights.com
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-- 
Anthony B. Coates
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