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Re: Incompatibilities in RDQL implementations

From: Jeen Broekstra <jeen@aduna.biz>
Date: Thu, 06 May 2004 12:17:02 +0200
Message-ID: <409A109E.9020108@aduna.biz>
To: www-rdf-interest@w3.org
Cc: Arjohn Kampman <arjohn.kampman@aduna.biz>

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.

Sesame's RDQL implementation was based on the BNF grammar that was 
supplied with Jena 1 (1.4 I think, to be precise). It _might_ be 
slightly out of date with the current spec :)

We'll update the commas thing ASAP, like Steve I'm slightly hesitant 
about the brackets though. We'll look into it.

Jeen Broekstra          Aduna BV
Knowledge Engineer      Julianaplein 14b, 3817 CS Amersfoort
http://aduna.biz        The Netherlands
tel. +31(0)33 46599877  fax. +31(0)33 46599877
Received on Thursday, 6 May 2004 06:16:56 UTC

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