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Re: Data binding as type definition

• To: aarons@d...
• Subject: Re: Data binding as type definition
• From: John Cowan <jcowan@r...>
• Date: Tue, 11 Jun 2002 15:33:00 -0400 (EDT)
• Cc: simonstl@s... ('Simon St.Laurent'), jcowan@r... ('John Cowan'), xml-dev@l...
• In-reply-to: <006001c2117d$ea5ca700$0400a8c0@skonnardt20> from "Aaron Skonnard" at Jun 11, 2002 01:26:41 PM

Aaron Skonnard scripsit:

> > Yep.  That's completely different from my notion of type (for 
> > XML, anyway), which is a set of values with a common lexical 
> > representation.  That representation can include both markup 
> > and textual representation.
> 
> I agree with John that a type is a named value-space. I also agree with
> Simon that for type to be useful in XML, its value-space must correspond
> to a well-defined lexical-space. This is exactly what XML Schema
> provides.

I don't think "well-defined lexical space" can be taken to be synonymous
with "common lexical representation", though I don't quite understand
what Simon means by "common".  A legitimate, though perhaps not very
useful, type would be "footype": {"foo", 32, 64, 79.9, "hike!"}, with
the obvious lexical representation {"foo", "32", "64", "79.9", "hike!"}.
But I don't know if Simon thinks this list of lexical representations
are "common".

-- 
John Cowan <jcowan@r...>     http://www.reutershealth.com
I amar prestar aen, han mathon ne nen,    http://www.ccil.org/~cowan
han mathon ne chae, a han noston ne 'wilith.  --Galadriel, _LOTR:FOTR_

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