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/*
* Copyright 2020, 2021 KRR Oxford
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package uk.ac.ox.cs.rsacomb.converter
import org.scalatest.LoneElement
import org.scalatest.flatspec.AnyFlatSpec
import org.scalatest.matchers.should.Matchers
import org.semanticweb.owlapi.apibinding.OWLManager
import org.semanticweb.owlapi.model.OWLOntologyManager
import tech.oxfordsemantic.jrdfox.logic.datalog.TupleTableAtom
import tech.oxfordsemantic.jrdfox.logic.expression.{Variable, IRI}
import uk.ac.ox.cs.rsacomb.converter.RDFoxConverter
import uk.ac.ox.cs.rsacomb.suffix.{Empty, Forward, Backward, Inverse}
import uk.ac.ox.cs.rsacomb.converter.{Normalizer, SkolemStrategy, NoSkolem}
import uk.ac.ox.cs.rsacomb.util.DataFactory
object NormalizerSpec {
val manager = OWLManager.createOWLOntologyManager()
val factory = manager.getOWLDataFactory
val normalizer = new Normalizer()
}
class NormalizerSpec extends AnyFlatSpec with Matchers with LoneElement {
import NormalizerSpec._
"Equivalent classes" should "be split in pairwise subclass axioms" in {
val cls1 = factory.getOWLClass("_:cls1")
val cls2 = factory.getOWLClass("_:cls2")
val cls3 = factory.getOWLClass("_:cls3")
val equivalentClasses =
factory.getOWLEquivalentClassesAxiom(cls1, cls2, cls3)
normalizer.normalize(equivalentClasses) should contain theSameElementsAs
Seq(
factory.getOWLSubClassOfAxiom(cls1, cls2),
factory.getOWLSubClassOfAxiom(cls1, cls3),
factory.getOWLSubClassOfAxiom(cls2, cls1),
factory.getOWLSubClassOfAxiom(cls2, cls3),
factory.getOWLSubClassOfAxiom(cls3, cls1),
factory.getOWLSubClassOfAxiom(cls3, cls2)
).flatMap(normalizer.normalize)
}
"Equivalent data properties" should "be split in pairwise subclass axioms" in {
val prop1 = factory.getOWLDataProperty("_:prop1")
val prop2 = factory.getOWLDataProperty("_:prop2")
val prop3 = factory.getOWLDataProperty("_:prop3")
val equivalentProps =
factory.getOWLEquivalentDataPropertiesAxiom(prop1, prop2, prop3)
normalizer.normalize(equivalentProps) should contain theSameElementsAs
Seq(
factory.getOWLSubDataPropertyOfAxiom(prop1, prop2),
factory.getOWLSubDataPropertyOfAxiom(prop1, prop3),
factory.getOWLSubDataPropertyOfAxiom(prop2, prop1),
factory.getOWLSubDataPropertyOfAxiom(prop2, prop3),
factory.getOWLSubDataPropertyOfAxiom(prop3, prop1),
factory.getOWLSubDataPropertyOfAxiom(prop3, prop2)
).flatMap(normalizer.normalize)
}
"Equivalent object properties" should "be split in pairwise subclass axioms" in {
val prop1 = factory.getOWLObjectProperty("_:prop1")
val prop2 = factory.getOWLObjectProperty("_:prop2")
val prop3 = factory.getOWLObjectProperty("_:prop3")
val equivalentProps =
factory.getOWLEquivalentObjectPropertiesAxiom(prop1, prop2, prop3)
normalizer.normalize(equivalentProps) should contain theSameElementsAs
Seq(
factory.getOWLSubObjectPropertyOfAxiom(prop1, prop2),
factory.getOWLSubObjectPropertyOfAxiom(prop1, prop3),
factory.getOWLSubObjectPropertyOfAxiom(prop2, prop1),
factory.getOWLSubObjectPropertyOfAxiom(prop2, prop3),
factory.getOWLSubObjectPropertyOfAxiom(prop3, prop1),
factory.getOWLSubObjectPropertyOfAxiom(prop3, prop2)
).flatMap(normalizer.normalize)
}
"A c \\exists R . D" should "be normalised to { A c \\exists R . C, C c D } if D is not a concept name" in {
val seed = 42
val test = normalizer.normalize(
factory
.getOWLSubClassOfAxiom(
factory.getOWLClass("A"),
factory.getOWLObjectSomeValuesFrom(
factory.getOWLObjectProperty("R"),
factory.getOWLObjectIntersectionOf(
factory.getOWLClass("D1"),
factory.getOWLClass("D2")
)
)
)
)(DataFactory(seed))
val cls = DataFactory(seed).getOWLClass
val result = List(
factory
.getOWLSubClassOfAxiom(
factory.getOWLClass("A"),
factory.getOWLObjectSomeValuesFrom(
factory.getOWLObjectProperty("R"),
cls
)
),
factory.getOWLSubClassOfAxiom(cls, factory.getOWLClass("D1")),
factory.getOWLSubClassOfAxiom(cls, factory.getOWLClass("D2"))
)
test should contain theSameElementsAs result
}
// "Disjunction on the rhs" should "be shifted" in {
// def cls(n: Int) = factory.getOWLClass(s"_:class$n")
// val axiom1 =
// factory.getOWLSubClassOfAxiom(
// factory.getOWLObjectIntersectionOf(cls(1), cls(2), cls(3)),
// factory.getOWLObjectUnionOf(cls(4), cls(5))
// )
// val axiom2 =
// factory.getOWLSubClassOfAxiom(
// cls(1),
// factory.getOWLObjectUnionOf(cls(2), cls(3), cls(4))
// )
// val axiom3 =
// factory.getOWLSubClassOfAxiom(
// factory.getOWLObjectIntersectionOf(cls(1), cls(2), cls(3)),
// factory.getOWLObjectUnionOf(cls(4))
// )
// normalizer.normalize(axiom1) should have length 5
// normalizer.normalize(axiom2) should have length 5
// normalizer.normalize(axiom3) should have length 4
// }
//"A class name" should "be converted into a single atom" in {
// val cls = factory.getOWLClass(iriString0)
// val atom = TupleTableAtom.rdf(term0, IRI.RDF_TYPE, IRI.create(iriString0))
// val (res, ext) =
// convert(cls, term0, List(), NoSkolem, Empty)
// res.loneElement shouldEqual atom
// ext shouldBe empty
//}
//"A intersection of classes" should "be converted into the union of the conversion of the classes" in {
// val cls0 = factory.getOWLClass(iriString0)
// val cls1 = factory.getOWLClass(iriString1)
// val cls2 = factory.getOWLClass(iriString2)
// val conj = factory.getOWLObjectIntersectionOf(cls0, cls1, cls2)
// val (res0, ext0) =
// convert(cls0, term0, List(), NoSkolem, Empty)
// val (res1, ext1) =
// convert(cls1, term0, List(), NoSkolem, Empty)
// val (res2, ext2) =
// convert(cls2, term0, List(), NoSkolem, Empty)
// val (res, ext) =
// convert(conj, term0, List(), NoSkolem, Empty)
// res should contain theSameElementsAs (res0 ::: res1 ::: res2)
// ext should contain theSameElementsAs (ext0 ::: ext1 ::: ext2)
//}
//"A singleton intersection" should "correspond to the conversion of the internal class" in {
// val cls0 = factory.getOWLClass(iriString0)
// val conj = factory.getOWLObjectIntersectionOf(cls0)
// val (res0, ext0) =
// convert(cls0, term0, List(), NoSkolem, Empty)
// val (res, ext) =
// convert(conj, term0, List(), NoSkolem, Empty)
// res should contain theSameElementsAs res0
// ext should contain theSameElementsAs ext0
//}
//"An object property" should "be converted into an atom with matching predicate" in {
// val prop = factory.getOWLObjectProperty(iriString0)
// for (sx <- suffixes) {
// val atom =
// TupleTableAtom.rdf(term0, IRI.create(iriString0 :: sx), term1)
// convert(prop, term0, term1, sx) shouldEqual atom
// }
//}
//"The inverse of an object property" should "be converted into an atom with inverted subject/object" in {
// val prop = factory.getOWLObjectProperty(iriString0)
// val inv = factory.getOWLObjectInverseOf(prop)
// for (sx <- Seq(Empty, Forward, Backward)) {
// val atom = TupleTableAtom.rdf(term1, IRI.create(iriString0 :: sx), term0)
// convert(inv, term0, term1, sx) shouldEqual atom
// }
//}
//"A data property" should "be converted into an atom with matching predicate" in {
// val prop = factory.getOWLDataProperty(iriString0)
// for (suffix <- suffixes) {
// val atom =
// TupleTableAtom.rdf(term0, IRI.create(iriString0 :: suffix), term1)
// convert(prop, term0, term1, suffix) shouldEqual atom
// }
//}
}
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