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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.Collections;
import java.util.Set;

import org.semanticweb.owlapi.change.SetOntologyIDData;
import org.semanticweb.owlapi.util.CollectionFactory;

/** Author: Matthew Horridge

 * The University of Manchester

 * Information Management Group

 * Date: 01-Apr-2009 */
public class SetOntologyID extends OWLOntologyChange {
    private final OWLOntologyID ontologyID;
    private final OWLOntologyID newOntologyID;

    /** Creates a set ontology id change, which will set the ontology id to the
     * new one.
     * 
     * @param ont
     *            The ontology whose id is to be changed
     * @param ontologyID
     *            The ontology ID */
    public SetOntologyID(OWLOntology ont, OWLOntologyID ontologyID) {
        super(ont);
        this.ontologyID = ont.getOntologyID();
        newOntologyID = ontologyID;
    }

    /** Creates a set ontology id change using the ontologyIRI, which will set
     * the ontology id to the new one.
     * 
     * @param ont
     *            The ontology whose id is to be changed
     * @param ontologyIRI
     *            The ontology iri */
    public SetOntologyID(OWLOntology ont, IRI ontologyIRI) {
        this(ont, new OWLOntologyID(ontologyIRI));
    }

    @Override
    public SetOntologyIDData getChangeData() {
        return new SetOntologyIDData(newOntologyID);
    }

    @Override
    public Set getSignature() {
        return CollectionFactory.getCopyOnRequestSetFromImmutableCollection(Collections
                . emptySet());
    }

    @Override
    public boolean isImportChange() {
        return false;
    }

    @Override
    public boolean isAxiomChange() {
        return false;
    }

    @Override
    public boolean isAddAxiom() {
        return false;
    }

    @Override
    public OWLAxiom getAxiom() {
        throw new UnsupportedOperationException("Not an axiom change");
    }

    /** Gets the original ID of the ontology whose URI was changed
     * 
     * @return The original ID */
    public OWLOntologyID getOriginalOntologyID() {
        return ontologyID;
    }

    /** @return the new URI - i.e. the URI of the ontology after the change was
     *         applied. */
    public OWLOntologyID getNewOntologyID() {
        return newOntologyID;
    }

    @Override
    public void accept(OWLOntologyChangeVisitor visitor) {
        visitor.visit(this);
    }

    @Override
    public  O accept(OWLOntologyChangeVisitorEx visitor) {
        return visitor.visit(this);
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("SetOntologyID(");
        sb.append(getNewOntologyID().toString());
        sb.append(" OntologyID(");
        sb.append(getOntology().getOntologyID());
        sb.append(")");
        sb.append(")");
        return sb.toString();
    }

    @Override
    public int hashCode() {
        return 57 + ontologyID.hashCode() + newOntologyID.hashCode() * 3;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof SetOntologyID)) {
            return false;
        }
        SetOntologyID change = (SetOntologyID) obj;
        return change.getOriginalOntologyID().equals(ontologyID)
                && change.getNewOntologyID().equals(getNewOntologyID());
    }
}