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- To: xml-dev@lists.xml.org
- Subject: Re: [xml-dev] XPointer and XML Schema
- From: ht@cogsci.ed.ac.uk (Henry S. Thompson)
- Date: 17 Jul 2002 17:30:55 +0100
- In-reply-to: <f5bit3e8gsj.fsf@cogsci.ed.ac.uk>
- References: <f5bit3e8gsj.fsf@cogsci.ed.ac.uk>
- User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Honest Recruiter)
Eric vDv wrote:
> On Wed, 2002-07-17 at 17:57, Henry S. Thompson wrote:
> > "Wayne Steele" <xmlmaster@hotmail.com> writes:
>
> > > If XPointer is going to depend on XML Schema, it should do so in a
> > > well-specified way.
> >
> > It doesn't, and the WG thought its non-dependency was already
> > well-specified by the phrase above.
>
> Isn't it necessary to introduce a XPointer scheme to identify the (or a)
> schema(s) which should be used to evaluate the bare names then? It's
> done to declare namespaces, why couldn't it be done to declare the
> schemas? Although it wouldn't be concise it would be fully
> "deterministic"!
We could do that, but it would be wrong (in my view). Wrong because
it violates locality -- a barename link with name XYZZY is to what the
_target_ establishes as is its XYZZY ID, not the source. Think of how
it works with DTDs, and a complex case with external entities and
catalogues and proxies and . . . There's nothing I can do at the
source end to determine what the target is going to establish as the
referent under those circumstances. So I don't think there should be
for the Schema case either. The _user_ does that by setting up the
processing environment, in either case.
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
W3C Fellow 1999--2002, 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/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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