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Re: Looking at the current proposals for SHACL

From: Peter F. Patel-Schneider <pfpschneider@gmail.com>
Date: Thu, 19 Mar 2015 20:30:59 -0700
Message-ID: <550B9473.1090400@gmail.com>
To: Holger Knublauch <holger@topquadrant.com>, public-data-shapes-wg@w3.org
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So you are saying that you can either do recursive shapes inside SPARQL,
which requires an extension to SPARQL, or outside of SPARQL, which requires
something more than SPARQL.  OK, I'll change the wording to "It provides a
formal specification for SHACL in terms of SPARQL plus something extra to
handle recursive shapes."

peter


On 03/19/2015 05:16 PM, Holger Knublauch wrote:
> On 3/20/2015 10:03, Peter F. Patel-Schneider wrote:
>> 3/ http://w3c.github.io/data-shapes/shacl/
>> 
>> This document contains a formal specification of SHACL based on SPARQL
>> with extra functionality.
>> 
>> Significant Features: - - It provides a formal specification for SHACL
>> in terms of an extended version of SPARQL.
> 
> Hi Peter, this topic (the presence of the sh:hasShape function as a
> SPARQL extension) seems to have become one of your favorite recurring
> points. Yet I have stated multiple times, and will state it again here,
> that this is just one implementation option among others, and that no
> "extension" to SPARQL is needed. The Spec makes this clear at
> 
> http://w3c.github.io/data-shapes/shacl/#sparql-AbstractValueShapePropertyConstraint
>
> 
> 
> I would appreciate if you stop using this tiny detail to make our two 
> proposals appear more different than they really are.
> 
> Thanks Holger
> 
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Received on Friday, 20 March 2015 03:31:28 UTC

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