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RE: Container Resources and Reified statement - which is the corr ect parser out there?

From: Ayalew Kassahun <A.Kassahun@InfoRay.NL>
Date: Thu, 11 Jan 2001 10:15:53 +0100
Message-ID: <7FAFD1931B62D411B2890050BAB19FB1337A68@ms1.inforay.nl>
To: www-rdf-interest@w3.org
Cc: Stefan Kokkelink <skokkeli@mathematik.uni-osnabrueck.de>, Libby.Miller@BRISTOL.AC.UK, dave.beckett@BRISTOL.AC.UK
But still why are statements 3-7 (of the redland parser) generated? see
further comments below ...

Ayalew

> Hi Ayalew
> 
> There's an annoying bug in SiRPAC which always reifies Description
> elements in containers even if you've already reified them. See 
> 
> http://www.w3.org/RDF/Implementations/SiRPAC/SiRPAC-defects.html
> 
> ID NOV-15-2000-1 
> 
> Libby
> 
> 
> On Wed, 10 Jan 2001, Ayalew Kassahun wrote:
> 
> > Hi,
> >  
> > There is already a lot of disscussion going on this topic, 
> > but this is just
> > a practical problem. If it has been answered before please 
> > point me to that.
> >  
> > I am trying to use RDF in my app and and I come accross a 
> > problem concerning
> > container resources. I tested an RDF data on three parsers 
> > available on the
> > web and all three gave different triples for container 
> > (statments with
> > bagID) . Some of the differences I could explain but some 
> > others not.
> >  
> > I took the RDF (shown below and taken from CARA[1] - E9) 
> > and run it on
> > Redland[2], CARA and SiRPAC[3]. The results are shown 
> > further down. Can
> > someone explain to me which is the most correct? Namely: 
> >  
> > 1 - I do not understand why Redland 'reifies' statement 
> > with ID 'res1'?!

I do not have an answer yet, may be Dava can anser me.

> > 2 - I do not understand why Redland and CARA 'reify' 
> > statement stat3. This seems to me wrong.?! 

OK, I understand!

> > 3 - SiRPAC seems to be inconsistent here - stat1 is reified 
> > and but not stat2

The problem it doesn't reify when it is supposed to...

> >  
> > Regards,
> > Ayalew
> >  
> >  
> > [RDF]
> > 1:  <?xml version="1.0" ?>
> > 2:  <rdf:RDF xmlns="  <http://myNS.org> http://myNS.org#"
> > 3:      xmlns:rdf="  <http://www.w3.org/1999/02/22-rdf-syntax-ns>
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#">
> > 4:  <typedNode rdf:ID="res1" rdf:bagID="stat_bag1">
> > 5:    <prop1 rdf:ID="stat1">
> > 6:      <rdf:Description rdf:ID="res2" rdf:bagID="stat_bag2">
> > 7:        <prop2 rdf:ID="stat2">a value</prop2>
> > 8:      </rdf:Description> 
> > 9:    </prop1>
> > 10: </typedNode>
> > 11: <rdf:Description rdf:ID="res3">
> > 12:   <prop3 rdf:ID="stat3">another value</prop3>
> > 13: </rdf:Description>
> > 14: </rdf:RDF>
> > 
> > 
> > [Redland]
> > 1: (file#res1,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > http://myNS.org#typedNode)
> > 2: (file#stat_bag1,  
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#Bag)
> > 3: (file#stat_bag1, [1], file#1)
> > 4: (anon: file#1,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement>
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement)
> > 5:  (anon: file#1,  
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#subject,
> > file#res1)
> > 6:  (anon: file#1,  
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type)
> > 7:  (anon: file#1,  
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#object,
> > http://myNS.org#typedNode)
> > 8:  (file#res1,
> > http://myNS.org#prop1,
> > file#res2)
> > 9:  (file#stat_bag1, [2], stat1)
> > 10: (stat1,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement)
> > 11: (stat1, 
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#subject,
> > file#res1)
> > 12: (stat1,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate,
> > http://myNS.org#prop1)
> > 13: (stat1,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#object,
> > file#res2)
> > 14: (file#res2,
> > http://myNS.org#prop2,
> > "a value")
> > 15: (file#stat_bag2,  
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#Bag)
> > 16: (file#stat_bag2, [1], stat2)
> > 17: (stat2,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement)
> > 18: (stat2, 
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#subject,
> > file#res2)
> > 19: (stat2,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate,
> > http://myNS.org#prop2)
> > 20: (stat2,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#object,
> > "a value")
> > 21: (file#res3,
> > http://myNS.org#prop3,
> > "another value")
> > 22: (stat3,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement)
> > 23: (stat3,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#subject,
> > file#res3)
> > 24: (stat3,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate,
> > http://myNS.org#prop3)
> > 25: (stat3,
> > http://www.w3.org/1999/02/22-rdf-syntax-ns#object,
> > "another value")
> > 
Received on Thursday, 11 January 2001 08:42:40 GMT

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