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RE: Incompatibilities in RDQL implementations

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Thu, 6 May 2004 14:22:52 +0200
To: "Jeen Broekstra" <jeen@aduna.biz>, <www-rdf-interest@w3.org>
Cc: "Arjohn Kampman" <arjohn.kampman@aduna.biz>
Message-ID: <BHEGLCKMOHGLGNOKPGHDIEACCDAA.jjc@hpl.hp.com>


> Steve Harris wrote:
>
> > On Thu, May 06, 2004 at 10:16:35 +0100, Phil Dawes wrote:
> >
> >>SELECT ?family , ?given
> >>WHERE  (?vcard  vcard:FN "John Smith")
> >>       (?vcard  vcard:N  ?name)
> >>       (?name   vcard:Family  ?family)
> >>       (?name   vcard:Given  ?given)
> >>USING  vcard FOR <http://www.w3.org/2001/vcard-rdf/3.0#>
> >>
> >>
> >>Unfortunately both Sesame(1.0) and RAP(0.71) require '<' and '>'
> >>around qnames for the query to parse.
> >
> >
> > FWIW 3store requires both <>'s and commas, the commas thing is a bug and
> > will be fixed. I'm be reluctant to remove or stop requireing
> the <>'s as I
> > think it makes the queries more readable.
>
> ObAOL: Ditto for Sesame.

What about the potential confusion between <vcard:Family> qname and
<vcard:Family> new URI scheme?

While I don't use RDQL much, I note that N3 has the same convention: <>
indicate URI, no-<> indicates qname.



Jeremy
Received on Thursday, 6 May 2004 08:24:01 GMT

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