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Re: Local names may now start with a digit?

From: David Booth <david@dbooth.org>
Date: Thu, 28 Jun 2012 13:05:42 -0400
To: Ivan Herman <ivan@w3.org>
Cc: Gavin Carothers <gavin@carothers.name>, public-rdf-comments <public-rdf-comments@w3.org>
Message-ID: <1340903142.2779.5705.camel@dbooth-laptop>
Hi Ivan & Gavin,

Thanks.  I'm happy to add another nail to RDF/XML's coffin anyway.  :)

For the record: I am satisfied with this resolution.

Thanks!
David

On Thu, 2012-06-28 at 17:52 +0200, Ivan Herman wrote:
> 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
> 
> 
> 
> 
> 
> 
> 
> 

-- 
David Booth, Ph.D.
http://dbooth.org/

Opinions expressed herein are those of the author and do not necessarily
reflect those of his employer.
Received on Thursday, 28 June 2012 17:06:19 UTC

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