- From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
- Date: 24 Jan 2001 20:17:01 +0000
- To: "K.Kawaguchi" <k-kawa@bigfoot.com>
- Cc: www-xml-schema-comments@w3.org
"K.Kawaguchi" <k-kawa@bigfoot.com> writes:
> I read the previous post to this list.
>
> http://lists.w3.org/Archives/Public/www-xml-schema-comments/2000OctDec/0333.html
>
> And this is the follow-up question.
>
>
> I understand that whiteSpace facet specifies "pre-processing" of lexical
> values, and therefore by no means "constraining facet". Is this correct?
>
> If this is correct, when this pre-processing should be done? Should it
> be done before validating all other facets?
Yes.
> I couldn't find any statement regarding this.
I'm in a hurry, so can't give the detailed reference, but at the top
of chapter 3 (I think) is a discussion of what is meant by 'value'
when used in validation constraints, which says that it always refers
to the [schema normalized value], which in turn is defined as
depending on the value of the whiteSpace facet.
> For example,
>
> <simpleType>
> <restriction base='string'>
> <enumeration value='foo'/>
> <whiteSpace value='colapse' />
> </restriction>
> </simpleType>
>
> Does this type matches lexical value " foo "?
Yes.
> Or
>
> <simpleType>
> <restriction base='string'>
> <length value='3' />
> <whiteSpace value='colapse' />
> </restriction>
> </simpleType>
>
> Does this type matches lexical value " x y "?
Yes.
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
W3C Fellow 1999--2001, part-time member of W3C Team
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/
Received on Wednesday, 24 January 2001 15:17:04 UTC