utype for STC region in SIAP query response

[Arnold Rots]

Norman Gray wrote:
> 
> Doug, hello.
> 
> On 2011 Dec 20, at 01:35, Douglas Tody wrote:
> 
> > I hope the holidays are treating you well.
> 
> Here's hoping; and to you, too.  

And the same to all of you from me.

> ...
> The argument from practicality is a strong one, and comes down to
> judgements about the relative weight of different downsides. 
> 
> Having said that, I'm looking at the draft UTYPE specification at
> <http://www.ivoa.net/internal/IVOA/Utypes/WD-Utypes-0.4-20091107.pdf>
> and can see UML (therefore object oriented notions of inheritance),
> XML Schemas, some quasi-XPath, a partial conflation of data
> modelling and interface design, a novel conceptual and syntactical
> framework for composing names which are derived from UML models,
> minus an associated semantics, but plus a sketched abbreviation
> syntax.  I broadly understand why each of those things is there,
> historically, but the end result is _scarily_ complicated. 

At the risk of sounding like a broken record, that's why I keep
suggesting the simple generic utype stc:AstroCoordArea.Region,
or in context something like:

     <GROUP utype="stc:CatalogEntryLocation">
         <FIELDref utype="stc:AstroCoordArea.Region" ref="footprint"/>
     </GROUP>

It's independent of any other models that may be hanging around, yet
unambiguous.

  - Arnold

> 
> ...
> But that's quite enough from me (more than enough, I'm sure I heard
> someone mutter...).  Have a good break, everyone who's taking one,
> and have a good New Year when it comes. 
> 
> All the best,
> 
> Norman
> 
> 
> -- 
> Norman Gray  :  http://nxg.me.uk
> SUPA School of Physics and Astronomy, University of Glasgow, UK
> 
> 
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Arnold H. Rots                                Chandra X-ray Science Center
Smithsonian Astrophysical Observatory                tel:  +1 617 496 7701
60 Garden Street, MS 67                              fax:  +1 617 495 7356
Cambridge, MA 02138                             arots at head.cfa.harvard.edu
USA                                     http://hea-www.harvard.edu/~arots/
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