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Re: cyclic rules

From: Jose Emilio Labra Gayo <jelabra@gmail.com>
Date: Fri, 11 Jul 2014 05:06:09 +0200
Message-ID: <CAJadXX+tTT9GZF+7p8DhzaK0hx_RDMVs-=Qs-fsLt9ibF+ABrw@mail.gmail.com>
To: "Peter F. Patel-Schneider" <pfpschneider@gmail.com>
Cc: "Eric Prud'hommeaux" <eric@w3.org>, "Solbrig, Harold R." <Solbrig.Harold@mayo.edu>, "public-rdf-shapes@w3.org" <public-rdf-shapes@w3.org>, Jim Davies <jim.davies@cs.ox.ac.uk>
Not yet. They are in my Todo list...I will implement them in the next weeks.

On Friday, July 11, 2014, Peter F. Patel-Schneider <pfpschneider@gmail.com>
wrote:
> Can ShExcala handle number constraints?  I get syntax errors when I try
to use number constraints like {2,3}
>
> peter
>
>
> On 07/10/2014 02:20 PM, Jose Emilio Labra Gayo wrote:
>>
>> I tried it in ShExcala and it validates: http://goo.gl/35ISLa
>>
>> With regards to your question about the spec, I think one of the goals
of the
>> charter is to work towards a common semantic specification of Shape
Expressions.
>>
>> In the Shexcala implementation, I tried to follow the semantics of
RelaxNG
>> specification [1] which is defined using inference rules. I adapted those
>> rules to ShEx and I described it here:
>>
>>
https://www.w3.org/2001/sw/wiki/ShEx/OperationalSemantics_Operational_semantics
>>
>> Best regards, Jose Labra
>>
>> [1] https://www.oasis-open.org/committees/relax-ng/spec.html#semantics
>>
>>
>> On Thu, Jul 10, 2014 at 11:01 PM, Eric Prud'hommeaux <eric@w3.org
>> <mailto:eric@w3.org>> wrote:
>>
>>     * Peter F. Patel-Schneider <pfpschneider@gmail.com
>>     <mailto:pfpschneider@gmail.com>> [2014-07-10 13:11-0700]
>>      > I played around with Eric's implementation, and it doesn't
recognize
>>      > <Foo> :patron <Foo>, <Foo> .
>>      > as a <FooShape>.
>>      >
>>      > Isn't that a bug?
>>
>>     needs an '@' before the <FooShape>.
>>     also, my quick hack of an RDF DB was a list instead of a set. fixed
(i think).
>>
>>
http://www.w3.org/2013/ShEx/FancyShExDemo?starting-node=%3CFoo%3E&schema=PREFIX%20%3A%20%3C...%3E%0Astart%3D%3CFooShape%3E%0A%3CFooShape%3E%20%7B%0A%20%20%3Apatron%20%40%3CFooShape%3E%0A%7D%0A&data=PREFIX%20%3A%20%3C...%3E%0A%3CFoo%3E%20%3Apatron%20%3CFoo%3E%20
.
>>
>>
>>      > peter
>>      >
>>      >
>>      > On 07/10/2014 12:53 PM, Jose Emilio Labra Gayo wrote:
>>      > >I have tried your example in both implementations and it passes
without
>>      > >infinite loops.
>>      > >
>>      > >You can check it here:
>>      > >
>>      > >Eric's implementaion: http://goo.gl/kBbgCZ
>>      > >Shexcala implementation: http://goo.gl/rUJ8OS
>>      > >
>>      > >
>>      > >Best regards, Jose Labra
>>      > >
>>      > >
>>      > >On Thu, Jul 10, 2014 at 9:24 PM, Peter F. Patel-Schneider
>>      > ><pfpschneider@gmail.com <mailto:pfpschneider@gmail.com>
>>     <mailto:pfpschneider@gmail.com <mailto:pfpschneider@gmail.com>>>
wrote:
>>      > >
>>      > >    Doesn't this cause an infinite loop on cyclic rules when
there are
>>     cycles
>>      > >    in the RDF graph?
>>      > >
>>      > >    Consider, for example
>>      > >
>>      > >    schema:
>>      > >       <FooShape> {
>>      > >         :patron <FooShape>
>>      > >       }
>>      > >
>>      > >    data:
>>      > >       <Foo> :patron <Foo> .
>>      > >
>>      > >
>>      > >    peter
>>      > >
>>      > >
>>      > >
>>      >
>>
>>     --
>>     -ericP
>>
>>     office: +1.617.599.3509 <tel:%2B1.617.599.3509>
>>     mobile: +33.6.80.80.35.59 <tel:%2B33.6.80.80.35.59>
>>
>>     (eric@w3.org <mailto:eric@w3.org>)
>>     Feel free to forward this message to any list for any purpose other
than
>>     email address distribution.
>>
>>     There are subtle nuances encoded in font variation and clever layout
>>     which can only be seen by printing this message on high-clay paper.
>>
>>
>>
>>
>> --
>> Saludos, Labra
>

-- 
Saludos, Labra
Received on Friday, 11 July 2014 03:06:37 UTC

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