Dave, I've removed line 2 as you've suggested, but stage3Hypertension continues null.
Isn't it the way I am creating the modelMem object? ModelMaker modelMaker = ModelFactory.createFileModelMaker(/User/guilherme /ontology/vitalSign.owl); Model modeltmp = modelMaker.createDefaultModel(); modelMem = ModelFactory.createOntologyModel(OntModelSpec. OWL_MEM_MICRO_RULE_INF, modeltmp); thanks, Guilherme On Wed, Feb 19, 2014 at 5:38 AM, Dave Reynolds <[email protected]>wrote: > On 19/02/14 03:20, Guilherme Maranhão wrote: > >> Hello guys, >> >> Those are the steps I am using to instantiate an OntClass object: >> >> // modelMem is an OntModel object. >> 1 - Reasoner reasoner = ReasonerRegistry.getOWLReasoner(); >> 2 - reasoner = reasoner.bindSchema(modelMem); >> 3 - OntModelSpec ontModelSpec = OntModelSpec.OWL_DL_MEM_RULE_INF; >> 4 - ontModelSpec.setReasoner(reasoner); >> 5 - OntModel ontModel = ModelFactory.createOntologyModel(ontModelSpec, >> modelMem); >> 6 - OntClass stage3Hypertension = ontModel.getOntClass(" >> http://www.semanticweb.org/ontologies/2013/1/Ontology1361391792831.owl# >> Stage3Hypertension >> "); >> > > This is not your underlying problem but you have bound modelMem in twice - > you have bound it to the reasoner and then applied that back to the same > model. It would be better to just have: > > OntModelSpec ontModelSpec = OntModelSpec.OWL_DL_MEM_RULE_INF; > > OntModel ontModel = ModelFactory.createOntologyModel(ontModelSpec, > modelMem); > > Though in fact I would recommend OWL_MEM_MICRO_RULE_INF as the best > default. > > > After line 2, the console prompt shows a lot of warning messages, like >> this: >> >> Fev 19, 2014 12:15:56 AM >> org.mindswap.pellet.jena.graph.query.GraphQueryHandler findTriple >> Warning: No query handler found for >> http://www.w3.org/1999/02/22-rdf-syntax-ns#type >> http://www.w3.org/1999/02/22-rdf-syntax-ns#type >> http://www.w3.org/1999/02/22-rdf-syntax-ns#Property >> > > Those are messages from Pellet. Your above code does not include Pellet so > either this isn't the code you are running or your "modelMem" in the above > is actually Pellet-backed model. > > If the latter then you have a rule reasoner running over a rule reasoner > running over Pellet. Don't know why that would cause outright failures but > certainly not a useful thing to do. > > To get help with Pellet you would need to ask the Pellet folks, Pellet is > not part of Jena. > > Dave > >
