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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, 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.model;

import java.util.Set;


/**
 * Author: Matthew Horridge

 * The University Of Manchester

 * Bio-Health Informatics Group
 * Date: 24-Oct-2006
 * 
 * Represents a DisjointUnion axiom in the OWL 2 Specification.
 */
public interface OWLDisjointUnionAxiom extends OWLClassAxiom {

    /**
     * Gets the class which is equivalent to the disjoint union.
     * @return the class that is equivalent to a disjoint union of other classes.
     */
    OWLClass getOWLClass();


    /**
     * Gets the class expressions which are operands of the disjoint union.
     *
     * @return A Set containing the operands of the disjoint union, note
     *         that this does not include the OWLClass that is equivalent
     *         to the disjoint union.
     */
    Set getClassExpressions();

    /**
     * Gets the part of this axiom that corresponds to an EquivalentClasses axiom.
     * @return The equivalent classes axiom part of this axiom.  This is essentially,
     * EquivalentClasses(CE, CEUnion) where CEUnion is the union of the classes
     * returned by the {@link #getClassExpressions()} method and CE is the class returned by
     * the {@link #getOWLClass()} method.
     */
    OWLEquivalentClassesAxiom getOWLEquivalentClassesAxiom();

    /**
     * Gets the part of this axiom that corresponds to an DisjointClasses axiom.
     * @return The disjoint classes axiom part of this axiom. This is essentially,
     * DisjointClasses(CE1, ..., CEn) where CEi in {CE1, ..., CEn} is
     * contained in the classes returned by the {@link #getClassExpressions()} method.
     */
    OWLDisjointClassesAxiom getOWLDisjointClassesAxiom();

    @Override
    OWLDisjointUnionAxiom getAxiomWithoutAnnotations();
}