On 5/12/18 5:11 PM, Jason Koh wrote: > From https://www.w3.org/TR/sparql11-property-paths/, > /elt*/ A path of zero or more occurrences of /elt/. > > > > > With regards, > Jason Koh > cseweb.ucsd.edu/~jbkoh <http://cseweb.ucsd.edu/%7Ejbkoh>
You have: You have: ``` sparql prefix : <http://test.abc#> prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> prefix owl: <http://www.w3.org/2002/07/owl#> insert IN GRAPH <urn:test1> { :class1 a owl:Class . :class2 a owl:Class . :entity0 a :class1. :entity1 a :class2. :entity2 a :class2. :entity0 :relation1 :entity1. :entity0 :relation1 :entity2. }; ``` Where are your rdfs:subClassOf relations? Implies it should have been: ``` sparql prefix : <http://test.abc#> prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> prefix owl: <http://www.w3.org/2002/07/owl#> insert IN GRAPH <urn:test1> { :class1 a owl:Class . :class2 a owl:Class . ## Note relation added here ## :class2 rdfs:subClassOf :class1 . :entity0 a :class1. :entity1 a :class2. :entity2 a :class2. :entity0 :relation1 :entity1. :entity0 :relation1 :entity2. }; ``` Kingsley > > On Sat, May 12, 2018 at 2:10 PM, Jason Koh <jb...@eng.ucsd.edu > <mailto:jb...@eng.ucsd.edu>> wrote: > > Hi Kingsley, > > I put * path modifier, which should also match no subClassOf > relationship pattern in my understanding. > > > With regards, > Jason Koh > cseweb.ucsd.edu/~jbkoh <http://cseweb.ucsd.edu/%7Ejbkoh> > > On Sat, May 12, 2018 at 1:57 PM, Kingsley Idehen > <kide...@openlinksw.com <mailto:kide...@openlinksw.com>> wrote: > > On 5/11/18 4:56 PM, Jason Koh wrote: >> Hi, >> >> I am using Virtuoso opensource v7.2.4. I found that SPARQLs >> with transitive relationships return partial results. Could >> you confirm this behavior? Here are the reproducing ISQL queries. >> >> - Data insertion: >> >> ``` >> sparql >> prefix : <http://test.abc#> >> prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns# >> <http://www.w3.org/1999/02/22-rdf-syntax-ns#>> >> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema# >> <http://www.w3.org/2000/01/rdf-schema#>> >> prefix owl: <http://www.w3.org/2002/07/owl# >> <http://www.w3.org/2002/07/owl#>> >> insert IN GRAPH <urn:test1> >> { >> :class1 a owl:Class . >> :class2 a owl:Class . >> :entity0 a :class1. >> :entity1 a :class2. >> :entity2 a :class2. >> :entity0 :relation1 :entity1. >> :entity0 :relation1 :entity2. >> }; >> ``` >> >> - Verification of the data >> >> ``` >> sparql >> select ?s ?p ?o from <urn:test1> where {?s ?p ?o .}; >> ``` >> >> - The problem query >> ``` >> sparql >> prefix : <http://test.abc> >> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema# >> <http://www.w3.org/2000/01/rdf-schema#>> >> select ?s ?o where { >> #?o a/rdfs:subClassOf* :class2. # Only returns a tuple. I >> think incorrect. >> ?o a :class2. # returns all the tuples. I think correct. >> ?s :relation1 ?o. >> }; >> ``` >> >> If I run the above query, it only returns one pair of ?s and >> ?o instead of two pairs of (entity0, entity1) and (entity0, >> entity1). If I comment out the transitive line and uncomment >> the second line, it returns the correct result with the two >> pairs. I believe those two queries should return the same result. >> >> Is this a bug or do I misunderstand something in the SPARQL? >> >> Thank you! >> >> >> >> With regards, >> Jason Koh >> cseweb.ucsd.edu/~jbkoh <http://cseweb.ucsd.edu/%7Ejbkoh> >> > > You have: > > ``` > sparql > prefix : <http://test.abc#> > prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns# > <http://www.w3.org/1999/02/22-rdf-syntax-ns#>> > prefix rdfs: <http://www.w3.org/2000/01/rdf-schema# > <http://www.w3.org/2000/01/rdf-schema#>> > prefix owl: <http://www.w3.org/2002/07/owl# > <http://www.w3.org/2002/07/owl#>> > insert IN GRAPH <urn:test1> > { > :class1 a owl:Class . > :class2 a owl:Class . > :entity0 a :class1. > :entity1 a :class2. > :entity2 a :class2. > :entity0 :relation1 :entity1. > :entity0 :relation1 :entity2. > }; > ``` > > Where have are your rdfs:subClassOf relations? > > > [1] http://docs.openlinksw.com/virtuoso/rdfsparqlruleexamples/ > <http://docs.openlinksw.com/virtuoso/rdfsparqlruleexamples/> > -- built-in inference docs . > > > -- > Regards, > > Kingsley Idehen > Founder & CEO > OpenLink Software (Home Page: http://www.openlinksw.com) > > Weblogs (Blogs): > Legacy Blog: http://www.openlinksw.com/blog/~kidehen/ > <http://www.openlinksw.com/blog/%7Ekidehen/> > Blogspot Blog: http://kidehen.blogspot.com > Medium Blog: https://medium.com/@kidehen > > Profile Pages: > Pinterest: https://www.pinterest.com/kidehen/ > <https://www.pinterest.com/kidehen/> > Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen > <https://www.quora.com/profile/Kingsley-Uyi-Idehen> > Twitter: https://twitter.com/kidehen > Google+: https://plus.google.com/+KingsleyIdehen/about > <https://plus.google.com/+KingsleyIdehen/about> > LinkedIn: http://www.linkedin.com/in/kidehen > <http://www.linkedin.com/in/kidehen> > > Web Identities (WebID): > Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i > <http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i> > : > http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this > > <http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this> > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > <mailto:Virtuoso-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/virtuoso-users > <https://lists.sourceforge.net/lists/listinfo/virtuoso-users> > > > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > _______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtuoso-users -- Regards, Kingsley Idehen Founder & CEO OpenLink Software (Home Page: http://www.openlinksw.com) Weblogs (Blogs): Legacy Blog: http://www.openlinksw.com/blog/~kidehen/ Blogspot Blog: http://kidehen.blogspot.com Medium Blog: https://medium.com/@kidehen Profile Pages: Pinterest: https://www.pinterest.com/kidehen/ Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen Twitter: https://twitter.com/kidehen Google+: https://plus.google.com/+KingsleyIdehen/about LinkedIn: http://www.linkedin.com/in/kidehen Web Identities (WebID): Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
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