/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 *
 * The Original Code is Protege-2000.
 *
 * The Initial Developer of the Original Code is Stanford University. Portions
 * created by Stanford University are Copyright (C) 2007.  All Rights Reserved.
 *
 * Protege was developed by Stanford Medical Informatics
 * (http://www.smi.stanford.edu) at the Stanford University School of Medicine
 * with support from the National Library of Medicine, the National Science
 * Foundation, and the Defense Advanced Research Projects Agency.  Current
 * information about Protege can be obtained at http://protege.stanford.edu.
 *
 */

package edu.stanford.smi.protegex.owl.testing.sanity;

import edu.stanford.smi.protege.model.Slot;
import edu.stanford.smi.protegex.owl.model.OWLObjectProperty;
import edu.stanford.smi.protegex.owl.model.OWLProperty;
import edu.stanford.smi.protegex.owl.model.RDFProperty;
import edu.stanford.smi.protegex.owl.testing.*;

import java.util.Collections;
import java.util.List;

/**
 * @author Holger Knublauch  <holger@knublauch.com>
 */
public class InverseOfInverseFunctionalMustBeFunctionalTest extends AbstractOWLTest
        implements AutoRepairableOWLTest, RDFPropertyTest {

    public InverseOfInverseFunctionalMustBeFunctionalTest() {
        super(SANITY_GROUP, null);
    }


    public static boolean fails(RDFProperty property) {
        RDFProperty inverseProperty = property.getInverseProperty();
        if (inverseProperty != null &&
                property instanceof OWLObjectProperty &&
                ((OWLObjectProperty) property).isInverseFunctional()) {
            return !inverseProperty.isFunctional();
        }
        else {
            return false;
        }
    }


    public boolean repair(OWLTestResult testResult) {
        OWLProperty property = (OWLProperty) testResult.getHost();
        Slot inverseSlot = property.getInverseProperty();
        inverseSlot.setAllowsMultipleValues(false);
        return true;
    }


    public List test(RDFProperty property) {
        if (fails(property)) {
            return Collections.singletonList(new DefaultOWLTestResult("The inverse of an inverse functional property should be functional, i.e. it may not have multiple values.",
                    property,
                    OWLTestResult.TYPE_WARNING,
                    this));
        }
        else {
            return Collections.EMPTY_LIST;
        }
    }
}
