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/* This file is part of the OWL API.
* The contents of this file are subject to the LGPL License, Version 3.0.
* Copyright 2014, The University of Manchester
*
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
*
* Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0 in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
* 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 org.semanticweb.owlapi.debugging;
import static org.semanticweb.owlapi.util.OWLAPIPreconditions.checkNotNull;
import java.util.Iterator;
import java.util.Set;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.semanticweb.owlapi.model.IRI;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLClassAssertionAxiom;
import org.semanticweb.owlapi.model.OWLClassExpression;
import org.semanticweb.owlapi.model.OWLDataFactory;
import org.semanticweb.owlapi.model.OWLDataPropertyDomainAxiom;
import org.semanticweb.owlapi.model.OWLEquivalentClassesAxiom;
import org.semanticweb.owlapi.model.OWLIndividual;
import org.semanticweb.owlapi.model.OWLObjectIntersectionOf;
import org.semanticweb.owlapi.model.OWLObjectPropertyDomainAxiom;
import org.semanticweb.owlapi.model.OWLObjectPropertyRangeAxiom;
import org.semanticweb.owlapi.model.OWLSubClassOfAxiom;
import org.semanticweb.owlapi.model.OWLSubObjectPropertyOfAxiom;
import org.semanticweb.owlapi.util.CollectionFactory;
import org.semanticweb.owlapi.util.OWLAxiomVisitorAdapter;
/**
* @author Matthew Horridge, The University Of Manchester, Bio-Health
* Informatics Group
* @since 2.0.0
*/
public class DebuggerClassExpressionGenerator extends OWLAxiomVisitorAdapter {
@Nonnull
private final OWLDataFactory dataFactory;
private OWLClassExpression desc;
/**
* Instantiates a new debugger class expression generator.
*
* @param dataFactory
* factory to use
*/
public DebuggerClassExpressionGenerator(@Nonnull OWLDataFactory dataFactory) {
this.dataFactory = checkNotNull(dataFactory,
"dataFactory cannot be null");
}
/**
* Gets the debugger class expression.
*
* @return the class expression
*/
@Nullable
public OWLClassExpression getDebuggerClassExpression() {
return desc;
}
@Override
public void visit(@Nonnull OWLSubClassOfAxiom axiom) {
// A and not (B)
OWLClassExpression complement = dataFactory
.getOWLObjectComplementOf(axiom.getSuperClass());
desc = dataFactory.getOWLObjectIntersectionOf(CollectionFactory
.createSet(axiom.getSubClass(), complement));
}
@Override
public void visit(OWLDataPropertyDomainAxiom axiom) {
OWLClassExpression sub = dataFactory.getOWLDataSomeValuesFrom(
axiom.getProperty(), dataFactory.getTopDatatype());
OWLAxiom ax = dataFactory.getOWLSubClassOfAxiom(sub, axiom.getDomain());
ax.accept(this);
}
@Override
public void visit(OWLObjectPropertyDomainAxiom axiom) {
// prop some Thing subclassOf domain
OWLClassExpression sub = dataFactory.getOWLObjectSomeValuesFrom(
axiom.getProperty(), dataFactory.getOWLThing());
OWLSubClassOfAxiom ax = dataFactory.getOWLSubClassOfAxiom(sub,
axiom.getDomain());
ax.accept(this);
}
@Override
public void visit(OWLObjectPropertyRangeAxiom axiom) {
// Thing subclassOf prop only Range
OWLClassExpression sup = dataFactory.getOWLObjectAllValuesFrom(
axiom.getProperty(), axiom.getRange());
OWLSubClassOfAxiom ax = dataFactory.getOWLSubClassOfAxiom(
dataFactory.getOWLThing(), sup);
ax.accept(this);
}
@Override
public void visit(OWLSubObjectPropertyOfAxiom axiom) {
// subProp some {a} subClassOf supProp some {a}
OWLIndividual ind = dataFactory.getOWLNamedIndividual(IRI.create(
"http://debugger.com#", "A" + System.nanoTime()));
OWLClassExpression sub = dataFactory.getOWLObjectHasValue(
axiom.getSubProperty(), ind);
OWLClassExpression sup = dataFactory.getOWLObjectHasValue(
axiom.getSuperProperty(), ind);
OWLAxiom ax = dataFactory.getOWLSubClassOfAxiom(sub, sup);
ax.accept(this);
}
@Override
public void visit(OWLClassAssertionAxiom axiom) {
OWLClassExpression sub = dataFactory.getOWLObjectOneOf(axiom
.getIndividual());
OWLAxiom ax = dataFactory.getOWLSubClassOfAxiom(sub,
axiom.getClassExpression());
ax.accept(this);
}
@Override
public void visit(OWLEquivalentClassesAxiom axiom) {
if (axiom.getClassExpressions().size() == 2
&& axiom.getClassExpressions().contains(
dataFactory.getOWLNothing())) {
for (OWLClassExpression c : axiom.getClassExpressions()) {
if (!c.isOWLNothing()) {
desc = c;
return;
}
}
}
// (C and not D) or (not C and D)
Set clses = axiom.getClassExpressions();
Iterator it = clses.iterator();
OWLClassExpression descC = it.next();
assert descC != null;
OWLClassExpression notC = dataFactory.getOWLObjectComplementOf(descC);
OWLClassExpression descD = it.next();
assert descD != null;
OWLClassExpression notD = dataFactory.getOWLObjectComplementOf(descD);
OWLObjectIntersectionOf left = dataFactory
.getOWLObjectIntersectionOf(CollectionFactory.createSet(descC,
notD));
OWLObjectIntersectionOf right = dataFactory
.getOWLObjectIntersectionOf(CollectionFactory.createSet(notC,
descD));
desc = dataFactory.getOWLObjectUnionOf(CollectionFactory.createSet(
left, right));
}
}
