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   Re: Why XML data typing is hard

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  • From: ht@cogsci.ed.ac.uk (Henry S. Thompson)
  • To: xml-dev@ic.ac.uk
  • Date: 30 Nov 1998 23:02:23 +0000

"Liam R. E. Quin" <liamquin@interlog.com> writes:

> Henry S. Thompson writes:
> > if we add sensitivity to language to our lexical typing, I might write
> >
> > <balance xml:lang='fr'>4,50</balance>
> > <balance xml:lang='ar'>&#x0664;&#x066B;&#x0665;&#0660;</balance>
> [...]
> david@megginson.com wrote:
> > It sounds quite plausible: it still places a burden of locale handling
> > on the processor or the application, but that's inevitable when we're
> > dealing with lexical constraints.  At least with this approach the
> > application will be able to fail gracefully:
> >
> >   Warning: sample.xml line 18 column 12: Cannot validate constraint
> >            "float" for unsupported language "ar" (trying default
> >            locale en-CA).
> >
> Where did the word "float" come from in that error message?
> Is it part of an augmented DTD or Schema, or a stylesheet, or is it
> wired in to the application?

Sorry, I was too hasty in pruning the history of this thread:
somewhere back there David (I think) said (I paraphrase): "Consider a
'float' datatype declaration: it's not as straightforward as you might 
think", and then offered the 4.5/4,5 alternation as an example.

  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/

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