Reasoner .bindSchema doesn't work

[nschejtman]

I've got the following code which receives two models, one that comes from reading instance data and another from reading an ontology data. Jena's defaul OWL reasoner works just fine like this:

def default(data: Model, schema: Model): InfModel = {
  val reasoner = ReasonerRegistry.getOWLReasoner.bindSchema(schema)
  return ModelFactory.createInfModel(reasoner, data)
}

I'm able to perform basic inferences like:

• data: aMan a Man
• schema: Man subClassOf Human
• return: aMan a Human (plus others)

However, when using Openllet's reasoner I'm not able to perform even these basic inferences. What am I missing?

Just in case this was my attempt:

def pellet(data: Model, schema: Model): InfModel = {
  val reasoner = PelletReasonerFactory.theInstance().create().bindSchema(schema)
  return ModelFactory.createInfModel(reasoner, data)
}

Concrete example:

Data:

@prefix i:            <file://src/test/resources/basic/data#> .
@prefix o:            <file://src/test/resources/basic/ontology#> .

i:Argentina
    a o:Country .

i:BuenosAires
    a o:Province .

Schema:

@prefix :            <file://src/test/resources/basic/ontology#> .
@prefix owl:         <http://www.w3.org/2002/07/owl#> .
@prefix rdf:         <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:        <http://www.w3.org/2000/01/rdf-schema#> .
@base <file://src/test/resources/basic/ontology#> .

<file://src/test/resources/basic/ontology#>
    rdf:type owl:Ontology .

:Region a owl:Class .

:Country
    rdfs:subClassOf :Region .

:Province
    rdfs:subClassOf :Region .

Query:

PREFIX i: <file://src/test/resources/basic/data#>
PREFIX o: <file://src/test/resources/basic/ontology#>
ASK {
    i:Argentina a o:Region .
    i:BuenosAires a o:Region .
    }

Running that query against the inference model from Jena's default OWL reasoner returns true while Pellet returns false

[nschejtman]

Looks like this is a bug. The workaround by creating the infModel directly with the union of both my data and schema