- From: Ivan Herman <ivan@w3.org>
- Date: Thu, 28 Jun 2012 17:52:44 +0200
- To: Gavin Carothers <gavin@carothers.name>
- Cc: David Booth <david@dbooth.org>, public-rdf-comments <public-rdf-comments@w3.org>
Note that RDFa has the same feature. In the case of RDFa, the request came (a fairly long time ago, actually) from, eg, IPTC[1] that has internal data structures that denote individual items by numbers. This is the same with, say, geonames URI-s, if my memory serves me well, but also in a number of library cataloguing services. In all those cases the 'natural' prefix:localname' structure would lead to a numeric-only local name. Ivan [1] http://www.iptc.org/site/Home/ On Jun 28, 2012, at 17:48 , Gavin Carothers wrote: > On Thu, Jun 28, 2012 at 8:41 AM, David Booth <david@dbooth.org> wrote: >> I notice that the Turtle grammar now permits a local name to begin with >> a digit, such as foo:1234 or _:5678 . >> http://www.w3.org/TR/turtle/#term-turtle2-PN_LOCAL >> As far as I remember, this is a divergence from RDF/XML, because XML >> local names are not permitted to start with a digit. When I check the >> RDF WG list of resolutions I see no mention of this change, so >> >> I am wondering about the rationale for this change, but I see no mention >> of it in the RDF WG list of resolutions: >> http://demo.3roundstones.net/rdf/2012/rdfwg/resolutions.xhtml?view >> >> Was this divergence discussed? And if so, can someone please supply a >> pointer to the rationale? > > http://www.w3.org/2011/rdf-wg/track/issues/1 > > Part of the alignment of Turtle with SPARQL 1.0 and SPARQL 1.1, both > of which allow for local names that start with digits. The RDF data > model has always allowed for any IRI to be used, this in fact meant > that there is valid RDF that cannot be expressed in RDF/XML. > > Thank you for your comment. I hope that clears up your question. > > Cheers, > Gavin >> >> Thanks! >> >> >> -- >> David Booth, Ph.D. >> http://dbooth.org/ >> >> Opinions expressed herein are those of the author and do not necessarily >> reflect those of his employer. >> >> > ---- Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Thursday, 28 June 2012 15:53:11 UTC