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[OK?] Re: Editorial comment on SPARQL Query Language Last Call

From: Eric Prud'hommeaux <eric@w3.org>
Date: Mon, 29 Aug 2005 04:10:30 -0400
To: Ivan Herman <ivan@w3.org>
Cc: public-rdf-dawg-comments@w3.org
Message-ID: <20050829081030.GA17752@w3.org>
Thank you for the comment on replacing blank nodes with '[]'s. 
Please check that the text in 
  <http://www.w3.org/2001/sw/DataAccess/rq23/#syntaxMisc>
provides an good recipe.

If it does, you might try responding with [CLOSED] in the
subject. I wonder if the issue tracking scripts will allow
you to close it...

On Fri, Jul 22, 2005 at 05:55:04PM +0200, Ivan Herman wrote:
> 
> Comment on http://www.w3.org/TR/2005/WD-rdf-sparql-query-20050419/
> Category: Editorial (in fact: readability...)
> 
> The section on Blank Nodes in section 2.8 (Other Syntactic Forms) says:
> 
> 
> > 	[ foaf:name  ?name ;
> >    	foaf:mbox  <alice@example.org> ]
> >
> > This is the same as writing the following basic graph pattern for
> > some uniquely allocated blank node:
> >
> >	_:b18  foaf:name  ?name .
> >	_:b18  foaf:mbox  <alice@example.org> .
> 
> Which is fine, but nothing is said in the draft what means
> 
> 	ex:a ex:b [ foaf:name  ?name ;
>     	foaf:mbox  <alice@example.org> ].
> 
> ie, that this triplets is *replaced* by
> 
> 	ex:a ex:b _:b18 .
> 
> where _b:18 is the blank node described above.
> 
> [Just saying that [ .... ] is mechanically replaced by those two lines above
> would lead to:
> 
> 	ex:a ex:b _:b18  foaf:name  ?name .
> 	_:b18  foaf:mbox  <alice@example.org> .
> 
> which is syntactically wrong.
> 
> The same remark holds for the section on RDF Collections:
> 
> 	ex:a ex:b (1 ?x 3) .
> 
> should be explained that it is replaced by:
> 
> 	ex:a ex:b _:b0 .
> 
> where _:b0 is the blank node described in the section.
> 
> Sincerely,
> 



-- 
-eric

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Received on Monday, 29 August 2005 08:10:41 GMT

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