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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.util;
import static org.semanticweb.owlapi.model.parameters.Imports.EXCLUDED;
import static org.semanticweb.owlapi.util.DLExpressivityChecker.Construct.*;
import static org.semanticweb.owlapi.util.OWLAPIPreconditions.verifyNotNull;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.annotation.Nonnull;
import org.semanticweb.owlapi.model.OWLAsymmetricObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLClass;
import org.semanticweb.owlapi.model.OWLClassAssertionAxiom;
import org.semanticweb.owlapi.model.OWLClassExpression;
import org.semanticweb.owlapi.model.OWLDataAllValuesFrom;
import org.semanticweb.owlapi.model.OWLDataCardinalityRestriction;
import org.semanticweb.owlapi.model.OWLDataComplementOf;
import org.semanticweb.owlapi.model.OWLDataExactCardinality;
import org.semanticweb.owlapi.model.OWLDataHasValue;
import org.semanticweb.owlapi.model.OWLDataMaxCardinality;
import org.semanticweb.owlapi.model.OWLDataMinCardinality;
import org.semanticweb.owlapi.model.OWLDataOneOf;
import org.semanticweb.owlapi.model.OWLDataProperty;
import org.semanticweb.owlapi.model.OWLDataPropertyAssertionAxiom;
import org.semanticweb.owlapi.model.OWLDataPropertyDomainAxiom;
import org.semanticweb.owlapi.model.OWLDataPropertyExpression;
import org.semanticweb.owlapi.model.OWLDataPropertyRangeAxiom;
import org.semanticweb.owlapi.model.OWLDataSomeValuesFrom;
import org.semanticweb.owlapi.model.OWLDatatypeRestriction;
import org.semanticweb.owlapi.model.OWLDifferentIndividualsAxiom;
import org.semanticweb.owlapi.model.OWLDisjointClassesAxiom;
import org.semanticweb.owlapi.model.OWLDisjointDataPropertiesAxiom;
import org.semanticweb.owlapi.model.OWLDisjointObjectPropertiesAxiom;
import org.semanticweb.owlapi.model.OWLDisjointUnionAxiom;
import org.semanticweb.owlapi.model.OWLEquivalentClassesAxiom;
import org.semanticweb.owlapi.model.OWLEquivalentDataPropertiesAxiom;
import org.semanticweb.owlapi.model.OWLEquivalentObjectPropertiesAxiom;
import org.semanticweb.owlapi.model.OWLFacetRestriction;
import org.semanticweb.owlapi.model.OWLFunctionalDataPropertyAxiom;
import org.semanticweb.owlapi.model.OWLFunctionalObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLInverseFunctionalObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLInverseObjectPropertiesAxiom;
import org.semanticweb.owlapi.model.OWLIrreflexiveObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLLiteral;
import org.semanticweb.owlapi.model.OWLNegativeDataPropertyAssertionAxiom;
import org.semanticweb.owlapi.model.OWLNegativeObjectPropertyAssertionAxiom;
import org.semanticweb.owlapi.model.OWLObjectAllValuesFrom;
import org.semanticweb.owlapi.model.OWLObjectCardinalityRestriction;
import org.semanticweb.owlapi.model.OWLObjectComplementOf;
import org.semanticweb.owlapi.model.OWLObjectExactCardinality;
import org.semanticweb.owlapi.model.OWLObjectHasSelf;
import org.semanticweb.owlapi.model.OWLObjectHasValue;
import org.semanticweb.owlapi.model.OWLObjectIntersectionOf;
import org.semanticweb.owlapi.model.OWLObjectInverseOf;
import org.semanticweb.owlapi.model.OWLObjectMaxCardinality;
import org.semanticweb.owlapi.model.OWLObjectMinCardinality;
import org.semanticweb.owlapi.model.OWLObjectOneOf;
import org.semanticweb.owlapi.model.OWLObjectPropertyAssertionAxiom;
import org.semanticweb.owlapi.model.OWLObjectPropertyDomainAxiom;
import org.semanticweb.owlapi.model.OWLObjectPropertyExpression;
import org.semanticweb.owlapi.model.OWLObjectPropertyRangeAxiom;
import org.semanticweb.owlapi.model.OWLObjectSomeValuesFrom;
import org.semanticweb.owlapi.model.OWLObjectUnionOf;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLReflexiveObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLSameIndividualAxiom;
import org.semanticweb.owlapi.model.OWLSubClassOfAxiom;
import org.semanticweb.owlapi.model.OWLSubDataPropertyOfAxiom;
import org.semanticweb.owlapi.model.OWLSubObjectPropertyOfAxiom;
import org.semanticweb.owlapi.model.OWLSubPropertyChainOfAxiom;
import org.semanticweb.owlapi.model.OWLSymmetricObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLTransitiveObjectPropertyAxiom;
/**
* @author Matthew Horridge, The University Of Manchester, Bio-Health
* Informatics Group
* @since 2.0.0
*/
public class DLExpressivityChecker extends OWLObjectVisitorAdapter {
private final Set constructs;
private final Set ontologies;
/** @return ordered constructs */
public List getConstructs() {
return getOrderedConstructs();
}
/**
* @param ontologies
* ontologies
*/
public DLExpressivityChecker(Set ontologies) {
this.ontologies = ontologies;
constructs = new HashSet<>();
}
/** @return DL name */
@Nonnull
public String getDescriptionLogicName() {
StringBuilder s = new StringBuilder();
for (Construct c : getOrderedConstructs()) {
s.append(c);
}
return verifyNotNull(s.toString());
}
private void pruneConstructs() {
if (constructs.contains(AL)) {
// AL + U + E can be represented using ALC
if (constructs.contains(C)) {
// Remove existential because this can be represented
// with AL + Neg
constructs.remove(E);
// Remove out union (intersection + negation (demorgan))
constructs.remove(U);
} else if (constructs.contains(E) && constructs.contains(U)) {
// Simplify to ALC
constructs.add(AL);
constructs.add(C);
constructs.remove(E);
constructs.remove(U);
}
}
if (constructs.contains(N) || constructs.contains(Q)) {
constructs.remove(F);
}
if (constructs.contains(Q)) {
constructs.remove(N);
}
if (constructs.contains(AL) && constructs.contains(C)
&& constructs.contains(TRAN)) {
constructs.remove(AL);
constructs.remove(C);
constructs.remove(TRAN);
constructs.add(S);
}
if (constructs.contains(R)) {
constructs.remove(H);
}
}
private List getOrderedConstructs() {
constructs.clear();
constructs.add(AL);
for (OWLOntology ont : ontologies) {
for (OWLAxiom ax : ont.getLogicalAxioms()) {
ax.accept(this);
}
}
pruneConstructs();
List cons = new ArrayList<>(constructs);
Collections.sort(cons, new ConstructComparator());
return cons;
}
/** A comparator that orders DL constucts to produce a traditional DL name. */
private static class ConstructComparator implements Comparator,
Serializable {
private static final long serialVersionUID = 40000L;
private final List order = new ArrayList<>();
ConstructComparator() {
order.add(S);
order.add(AL);
order.add(C);
order.add(U);
order.add(E);
order.add(R);
order.add(H);
order.add(O);
order.add(I);
order.add(N);
order.add(Q);
order.add(F);
order.add(TRAN);
order.add(D);
}
@Override
public int compare(Construct o1, Construct o2) {
return order.indexOf(o1) - order.indexOf(o2);
}
}
// Property expression
@Override
public void visit(OWLObjectInverseOf property) {
constructs.add(I);
}
@Override
public void visit(OWLDataProperty property) {
constructs.add(D);
}
// Data stuff
@Override
public void visit(OWLDataComplementOf node) {
constructs.add(D);
}
@Override
public void visit(OWLDataOneOf node) {
constructs.add(D);
}
@Override
public void visit(OWLDatatypeRestriction node) {
constructs.add(D);
}
@Override
public void visit(OWLLiteral node) {
constructs.add(D);
}
@Override
public void visit(OWLFacetRestriction node) {
constructs.add(D);
}
// class expressions
@Override
public void visit(OWLObjectIntersectionOf ce) {
constructs.add(AL);
for (OWLClassExpression operands : ce.getOperands()) {
operands.accept(this);
}
}
@Override
public void visit(OWLObjectUnionOf ce) {
constructs.add(U);
for (OWLClassExpression operands : ce.getOperands()) {
operands.accept(this);
}
}
private static boolean isTop(OWLClassExpression classExpression) {
return classExpression.isOWLThing();
}
private boolean isAtomic(OWLClassExpression classExpression) {
if (classExpression.isAnonymous()) {
return false;
} else {
for (OWLOntology ont : ontologies) {
if (!ont.getAxioms((OWLClass) classExpression, EXCLUDED)
.isEmpty()) {
return false;
}
}
return true;
}
}
@Override
public void visit(OWLObjectComplementOf ce) {
if (isAtomic(ce)) {
constructs.add(AL);
} else {
constructs.add(C);
}
ce.getOperand().accept(this);
}
@Override
public void visit(OWLObjectSomeValuesFrom ce) {
if (isTop(ce.getFiller())) {
constructs.add(AL);
} else {
constructs.add(E);
}
ce.getProperty().accept(this);
ce.getFiller().accept(this);
}
@Override
public void visit(OWLObjectAllValuesFrom ce) {
constructs.add(AL);
ce.getProperty().accept(this);
ce.getFiller().accept(this);
}
@Override
public void visit(OWLObjectHasValue ce) {
constructs.add(O);
constructs.add(E);
ce.getProperty().accept(this);
}
private void checkCardinality(OWLDataCardinalityRestriction restriction) {
if (restriction.isQualified()) {
constructs.add(Q);
} else {
constructs.add(N);
}
restriction.getFiller().accept(this);
restriction.getProperty().accept(this);
}
private void checkCardinality(OWLObjectCardinalityRestriction restriction) {
if (restriction.isQualified()) {
constructs.add(Q);
} else {
constructs.add(N);
}
restriction.getFiller().accept(this);
restriction.getProperty().accept(this);
}
@Override
public void visit(OWLObjectMinCardinality ce) {
checkCardinality(ce);
}
@Override
public void visit(OWLObjectExactCardinality ce) {
checkCardinality(ce);
}
@Override
public void visit(OWLObjectMaxCardinality ce) {
checkCardinality(ce);
}
@Override
public void visit(OWLObjectHasSelf ce) {
ce.getProperty().accept(this);
constructs.add(R);
}
@Override
public void visit(OWLObjectOneOf ce) {
constructs.add(U);
constructs.add(O);
}
@Override
public void visit(OWLDataSomeValuesFrom ce) {
constructs.add(E);
ce.getFiller().accept(this);
ce.getProperty().accept(this);
}
@Override
public void visit(OWLDataAllValuesFrom ce) {
ce.getFiller().accept(this);
ce.getProperty().accept(this);
}
@Override
public void visit(OWLDataHasValue ce) {
constructs.add(D);
ce.getProperty().accept(this);
}
@Override
public void visit(OWLDataMinCardinality ce) {
checkCardinality(ce);
}
@Override
public void visit(OWLDataExactCardinality ce) {
checkCardinality(ce);
}
@Override
public void visit(OWLDataMaxCardinality ce) {
checkCardinality(ce);
}
// Axioms
@Override
public void visit(OWLSubClassOfAxiom axiom) {
axiom.getSubClass().accept(this);
axiom.getSuperClass().accept(this);
}
@Override
public void visit(OWLNegativeObjectPropertyAssertionAxiom axiom) {
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLAsymmetricObjectPropertyAxiom axiom) {
constructs.add(R);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLReflexiveObjectPropertyAxiom axiom) {
constructs.add(R);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLDisjointClassesAxiom axiom) {
constructs.add(C);
for (OWLClassExpression desc : axiom.getClassExpressions()) {
desc.accept(this);
}
}
@Override
public void visit(OWLDataPropertyDomainAxiom axiom) {
axiom.getDomain().accept(this);
constructs.add(AL);
constructs.add(D);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLObjectPropertyDomainAxiom axiom) {
constructs.add(AL);
axiom.getDomain().accept(this);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLEquivalentObjectPropertiesAxiom axiom) {
constructs.add(H);
for (OWLObjectPropertyExpression prop : axiom.getProperties()) {
prop.accept(this);
}
}
@Override
public void visit(OWLNegativeDataPropertyAssertionAxiom axiom) {
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLDifferentIndividualsAxiom axiom) {
constructs.add(U);
constructs.add(O);
constructs.add(C);
}
@Override
public void visit(OWLDisjointDataPropertiesAxiom axiom) {
constructs.add(D);
for (OWLDataPropertyExpression prop : axiom.getProperties()) {
prop.accept(this);
}
}
@Override
public void visit(OWLDisjointObjectPropertiesAxiom axiom) {
constructs.add(R);
for (OWLObjectPropertyExpression prop : axiom.getProperties()) {
prop.accept(this);
}
}
@Override
public void visit(OWLObjectPropertyRangeAxiom axiom) {
constructs.add(AL);
axiom.getRange().accept(this);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLObjectPropertyAssertionAxiom axiom) {
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLFunctionalObjectPropertyAxiom axiom) {
constructs.add(F);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLSubObjectPropertyOfAxiom axiom) {
constructs.add(H);
axiom.getSubProperty().accept(this);
axiom.getSuperProperty().accept(this);
}
@Override
public void visit(OWLDisjointUnionAxiom axiom) {
constructs.add(U);
constructs.add(C);
for (OWLClassExpression desc : axiom.getClassExpressions()) {
desc.accept(this);
}
}
@Override
public void visit(OWLSymmetricObjectPropertyAxiom axiom) {
constructs.add(I);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLDataPropertyRangeAxiom axiom) {
constructs.add(AL);
constructs.add(D);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLFunctionalDataPropertyAxiom axiom) {
constructs.add(F);
constructs.add(D);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLEquivalentDataPropertiesAxiom axiom) {
constructs.add(H);
constructs.add(D);
for (OWLDataPropertyExpression prop : axiom.getProperties()) {
prop.accept(this);
}
}
@Override
public void visit(OWLClassAssertionAxiom axiom) {
axiom.getClassExpression().accept(this);
}
@Override
public void visit(OWLEquivalentClassesAxiom axiom) {
for (OWLClassExpression desc : axiom.getClassExpressions()) {
desc.accept(this);
}
}
@Override
public void visit(OWLDataPropertyAssertionAxiom axiom) {
constructs.add(D);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLTransitiveObjectPropertyAxiom axiom) {
constructs.add(TRAN);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLIrreflexiveObjectPropertyAxiom axiom) {
constructs.add(R);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLSubDataPropertyOfAxiom axiom) {
constructs.add(H);
constructs.add(D);
}
@Override
public void visit(OWLInverseFunctionalObjectPropertyAxiom axiom) {
constructs.add(I);
constructs.add(F);
axiom.getProperty().accept(this);
}
@Override
public void visit(OWLSameIndividualAxiom axiom) {
constructs.add(O);
}
@Override
public void visit(OWLSubPropertyChainOfAxiom axiom) {
constructs.add(R);
for (OWLObjectPropertyExpression prop : axiom.getPropertyChain()) {
prop.accept(this);
}
axiom.getSuperProperty().accept(this);
}
@Override
public void visit(OWLInverseObjectPropertiesAxiom axiom) {
constructs.add(I);
}
/** Construct enum */
public enum Construct {
//@formatter:off
/** AL */ AL("AL"),
/** U */ U("U"),
/** C */ C("C"),
/** E */ E("E"),
/** N */ N("N"),
/** Q */ Q("Q"),
/** H */ H("H"),
/** I */ I("I"),
/** O */ O("O"),
/** F */ F("F"),
/** TRAN */ TRAN("+"),
/** D */ D("(D)"),
/** R */ R("R"),
/** S */ S("S"),
/** EL */ EL("EL"),
/** EL++ */ ELPLUSPLUS("EL++");
//@formatter:on
Construct(String s) {
this.s = s;
}
private final String s;
@Override
public String toString() {
return s;
}
}
}
