Hi again, I forgot to mention that the model is retrieved from a TDB. ¿Should I always create the OntModel from the TDB?
I don't really know how I should do that to work. Regards Jorge On 10/03/2017 10:51, George News wrote: > Hi, > > I have the following properties defined in my ontology: > > <owl:ObjectProperty rdf:about="http://mydomain.com#by";> > <rdfs:domain rdf:resource="http://mydomain.com#data"/> > <owl:inverseOf rdf:resource="http://mydomain.com#made"/> > <rdfs:range rdf:resource="http://mydomain.com#node"/> > </owl:ObjectProperty> > > <owl:ObjectProperty rdf:about="http://mydomain.com#made";> > <owl:inverseOf rdf:resource="http://mydomain.com#by"/> > <rdfs:domain rdf:resource="http://mydomain.com#node"/> > <rdfs:range rdf:resource="http://mydomain.com#data"/> > </owl:ObjectProperty> > > And I have registered multiple entity data and nodes using a JSON-LD document > similar to the one below: > { > "@context": { > "my": "http://mydomain.com#"; > }, > > "@graph": [ > { > "@id": "_:b81", > "@type": "my:data", > "my:by": { > "@id": "Node1" > }, > }, > { > "@id": "Node1", > "@type": "my:node", > } > ] > } > > I'm using: > OntModel ontModel = > ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM_MICRO_RULE_INF); > > And this is the model I'm injecting to the QueryExecution, etc. > > Then I try to run SPARQL sentences on the TDB, but I'm facing issues with the > inference. If I run > > PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> > PREFIX my: <http://mydomain.com#> > > SELECT ?d ?n > WHERE { > ?n rdf:type/rdfs:subClassOf my:node . > ?d my:by ?n . > } > > I'm getting results, but if I run > > PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> > PREFIX my: <http://mydomain.com#> > > SELECT ?d ?n > WHERE { > ?n rdf:type/rdfs:subClassOf my:node . > ?n my:made ?d . > } > > I don't get any. The inference model should be infering that made is the > inverse of and I should be getting the same results, shouldn't I? Or should I > create a InfModel base on the desired reasoner and then inject it to the > QueryExecution? From my understanding the first option should be working. > > Thanks for your help. > Jorge >
