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[protege-owl] Different behavior in Protege 3x and 4x

swamy alswamy at gmail.com
Tue Jan 26 18:56:30 PST 2010


Hi Timothy,

Thanks a lot for the update.

Regards,
Swamy

On 1/27/10, Timothy Redmond <tredmond at stanford.edu> wrote:
>
>
> I had to do a little digging to remember the status on this. This is a
> known bug in the OWL api and in fact there is currently a query on the
> OWL api mailing list about this very issue.  The problem  is not fixed
> in the latest v2 version of the OWL API.
>
> I believe that this is fixed in Protege 4.1 and in the v3 version of the
> OWL API but there is a bit of work to do in that arena  with editing
> rules.  I was planning on putting some time in today to fix the Protege
> 4.1 editing of rules.
>
> Things are a bit awkward at the moment because we are between versions
> of Protege.  I am working on fixing this soon.
>
> -Timothy
>
>
>
>
> On Sun, 2010-01-24 at 17:12 +0530, swamy wrote:
> > Hi All,
> >
> > I have sample ontology to find near by restaurants.
> >
> > I have made this ontology using Protege 3x and applied the following
> > rule too.
> >
> > eg:
> > Place(?p)  ∧ Category(Chinese_Restaurants)  ∧ hasCategory(?p,
> > Chinese_Restaurants)  ∧ Selected(?s)  → hasSelected(?s, ?p)
> >
> > And when I am trying the same in Protege 4 or (Pellet + OWL API), I am
> > getting the following error in the rule part.
> >
> > In Protege 4x - IllegalStateException: Node is null. Attempting to get
> > node for Chinese_Restaurants
> > In Pellet & OWL API -  Error: Node is null. Attempting to get node for
> > Chinese_Restaurants
> >
> > Here Chinese_Restaurants is individual of Category class.
> >
> > Please help me in explain this difference.
> >
> > Thank you in advance.
> >
> > Regards,
> > Swamy
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> >
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-- 
Thanks & Regards
~Swamy
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