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   XSchema: Notation attributes (was Re: XSchema: multiple proposals)

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  • From: rbourret@dvs1.informatik.tu-darmstadt.de (Ron Bourret)
  • To: xml-dev@ic.ac.uk
  • Date: Thu, 4 Jun 1998 18:16:04 +0200

John Cowan wrote:

> Toby Speight wrote:
> > Hmm.  I see your point.  I think what I dislked about Ron's proposal
> > is the unconstrained #PCDATA here:
> > 
> > Ron> <!ELEMENT NotationValue (#PCDATA)>
> > Ron> <!ELEMENT EnumerationValue (#PCDATA)>
> > 
> > I think that the list-of-elements structure can be retained, but with
> > tighter constraints by writing
> > 
> > > <!ELEMENT NotationValue EMPTY>
> > > <!ATTLIST NotationValue Value NMTOKEN #REQUIRED>
> > > <!ELEMENT EnumerationValue EMPTY>
> > > <!ATTLIST EnumerationValue Value NMTOKEN #REQUIRED>
> That's what my draft does wrt enumerations.  I have more problems
> with notations, because it doesn't make sense to me to have to
> redeclare every notation name with every notation attribute,
> since any notation attribute can refer to any notation name.
> Thus I treat notation attributes like other attributes with
> predefined types.

I'm not sure what you mean by redeclaring every notation name with every 
attribute.  In the above structure, the notation value is simply a NMTOKEN.  Why 
would I need to redeclare notation names?  Are you thinking that the 
NotationValue attribute is an enumerated (not NMTOKEN) attribute?

-- Ron Bourret

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