Thanks Rob. You were right, these tests pass:
assertEquals(infModel.listStatements().toList().size(),
nonInfModel.listStatements().toList().size());
assertEquals(infModel.listStatements().toList().size(),
union.listStatements().toList().size());
On Mon, Sep 21, 2020 at 11:35 AM Rob Vesse <rve...@dotnetrdf.org> wrote:
>
> I think your test assertions are faulty, from
> https://jena.apache.org/documentation/javadoc/jena/org/apache/jena/rdf/model/Model.html#size--
>
> size will return the number of statements in a concrete model, for a
> virtualized model such as one created by an inference engine, it will return
> an estimated lower bound for the numberof statements in the model but it is
> possible for a subsequent listStatements on such a model to discover more
> statements than size() indicated.
>
> So size() is not guaranteed to include the count of inferred statements. If
> you want to count the size of an inference model you will need to iterate
> over the statements and count those directly as the Javadoc implies
>
> Rob
>
> On 21/09/2020, 10:27, "Martynas Jusevičius" <marty...@atomgraph.com> wrote:
>
> Alternatively, how do I create a read-only union which has all the
> statements of an InfModel? ModelFactory.createUnion() does not:
>
> Model union =
> ModelFactory.createUnion(ModelFactory.createDefaultModel(), infModel);
> assertEquals(infModel.size(), union.size());
>
> expected:<1350> but was:<2264>
>
> On Mon, Sep 21, 2020 at 11:02 AM Martynas Jusevičius
> <marty...@atomgraph.com> wrote:
> >
> > Hi,
> >
> > I want to load an ontology with imports into an inference model, but
> > then materialize the triples as no further changes will be made to the
> > model and we would like to avoid the reasoner overhead for read-only
> > access.
> >
> > How does one do the materialization? Simple add() doesn't seem to cut
> it:
> >
> > @Test
> > public void testMaterialize()
> > {
> > OntModel infModel =
> >
> OntDocumentManager.getInstance().getOntology("https://www.w3.org/ns/ldt#";,
> > OntModelSpec.OWL_MEM_RDFS_INF);
> > OntModel nonInfModel =
> > ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
> > nonInfModel.add(infModel);
> > assertEquals(infModel.size(), nonInfModel.size());
> > }
> >
> > expected:<1350> but was:<2264>
> >
> >
> > Martynas
>
>
>
>
