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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 (C) 2011, 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.
*
* Copyright 2011, The University of Manchester
*
* 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;/*
* Copyright (C) 2007, University of Manchester
*
* Modifications to the initial code base are copyright of their
* respective authors, or their employers as appropriate. Authorship
* of the modifications may be determined from the ChangeLog placed at
* the end of this file.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.semanticweb.owlapi.model.AddAxiom;
import org.semanticweb.owlapi.model.OWLClass;
import org.semanticweb.owlapi.model.OWLClassExpression;
import org.semanticweb.owlapi.model.OWLDataFactory;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLOntologyChange;
import org.semanticweb.owlapi.model.OWLSubClassOfAxiom;
import org.semanticweb.owlapi.model.RemoveAxiom;
/**
* Author: Matthew Horridge
* The University Of Manchester
* Bio-Health Informatics Group
* Date: 23-Jul-2007
*
* This composite change will convert a primitive class to a defined class by replacing subclass
* axioms where the class in question is on the left hand side of the subclass axiom to an
* equivalent classes axiom which makes the class equivalent to the intersection of its superclasses.
*
* More formally, given a class A, a set of ontologies S, and a target targetOntology T, for each targetOntology
* O in S, subclass axioms whose LHS is A will be removed from O. The superclasses from these axioms
* will be combined into an intersection class which will be made equivalent to A using an equivalent
* classes axioms E. E will be added to the target targetOntology T.
*
* This composite change supports the pattern of working where a primitive class is converted to
* a defined class - functionality which is usually found in editors.
*/
public class ConvertSuperClassesToEquivalentClass extends AbstractCompositeOntologyChange {
private final OWLOntology targetOntology;
private final OWLClass cls;
private final Set ontologies;
private List changes;
/**
* @param dataFactory A data factory which can be used to create the appropriate axioms
* @param cls The class whose superclasses will be converted to an equivalent class.
* @param ontologies The ontologies which should be examined for subclass axioms.
* @param targetOntology The targetOntology which the equivalent classes axiom should be added to
*/
public ConvertSuperClassesToEquivalentClass(OWLDataFactory dataFactory, OWLClass cls, Set ontologies,
OWLOntology targetOntology) {
super(dataFactory);
this.targetOntology = targetOntology;
this.cls = cls;
this.ontologies = ontologies;
generateChanges();
}
private void generateChanges() {
// We remove the existing superclasses and then combine these
// into an intersection which is made equivalent.
changes = new ArrayList();
Set descs = new HashSet();
for (OWLOntology ont : ontologies) {
for (OWLSubClassOfAxiom ax : ont.getSubClassAxiomsForSubClass(cls)) {
changes.add(new RemoveAxiom(ont, ax));
descs.add(ax.getSuperClass());
}
}
OWLClassExpression equivalentClass = getDataFactory().getOWLObjectIntersectionOf(descs);
Set equivalentClasses = new HashSet();
equivalentClasses.add(cls);
equivalentClasses.add(equivalentClass);
changes.add(new AddAxiom(targetOntology, getDataFactory().getOWLEquivalentClassesAxiom(equivalentClasses)));
}
@Override
public List getChanges() {
return changes;
}
}
