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RE: xml datatype facets

From: Geoff Chappell <geoff@sover.net>
Date: Thu, 13 Jan 2005 08:57:52 -0500
To: "'Jeremy Carroll'" <jjc@hplb.hpl.hp.com>
Cc: <www-rdf-interest@w3.org>
Message-ID: <004101c4f977$e0e49e00$6401a8c0@gsclaptop>



> -----Original Message-----
> From: www-rdf-interest-request@w3.org [mailto:www-rdf-interest-
> request@w3.org] On Behalf Of Jeremy Carroll
> Sent: Thursday, January 13, 2005 6:41 AM
> To: Geoff Chappell
> Cc: www-rdf-interest@w3.org
> Subject: Re: xml datatype facets
> 
> 
> Geoff Chappell wrote:
> > Hi,
> >
> > Any one know of any standards or best practices for specifying facets on
> xml
> > datatypes in rdf?
> >
> > I imagine something like this (in turtle/n3):
> >
> > ex:LengthConstrainedString a rdfs:Datatype;
> >   rdfs:subClassOf xsd:string;
> >   xsd:maxLength
> "32"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger>;
> >   xsd:minLength
> "1"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger>.
> >
> >
> > Or....?
> >
> > Thanks,
> >
> > Geoff
> >
> >
> >
> 
> SWBPD WG is working on this problem, see
> 
> http://www.w3.org/2001/sw/BestPractices/XSCH/xsch-sw-20041216/
> 
> particularly section 2.
> It provides ability to use user defined XML Schema datatypes directly in
> RDF and OWL, but does not provide the mapping of facets to triples that
> your example shows.
> 
> I hope a version for public review will be available sometime fairly
> soon (but not real soon!)
> 
> Jeremy
> 

Thanks, that looks like it is/will be a useful doc. If it makes sense for
this particular document, it would be great if you could also suggest ways
to make the datatype definition available to an rdf processor - whether by
mapping to triples, shoving in an XMLLiteral on the datatype class with a
well known name, or....

Geoff
Received on Thursday, 13 January 2005 13:58:00 GMT

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