001    /**
002     * Copyright (C) 2007-2011, Jens Lehmann
003     *
004     * This file is part of DL-Learner.
005     *
006     * DL-Learner is free software; you can redistribute it and/or modify
007     * it under the terms of the GNU General Public License as published by
008     * the Free Software Foundation; either version 3 of the License, or
009     * (at your option) any later version.
010     *
011     * DL-Learner is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014     * GNU General Public License for more details.
015     *
016     * You should have received a copy of the GNU General Public License
017     * along with this program.  If not, see <http://www.gnu.org/licenses/>.
018     */
019    
020    package org.dllearner.core.owl;
021    
022    import java.util.Map;
023    
024    import org.dllearner.utilities.Helper;
025    
026    /**
027     * Represents the inverse of a property expression. It can be used
028     * in axioms e.g. complex class descriptions. For instance:
029     * 
030     * father = male AND isChildOf^-1
031     * 
032     * This way, you can refer to an inverse of an object property without
033     * actually giving it a name (you could name it isParentOf in this case).
034     * 
035     * @author Jens Lehmann
036     *
037     */
038    public class ObjectPropertyInverse extends ObjectPropertyExpression {
039            
040            /**
041             * 
042             */
043            private static final long serialVersionUID = -5416117104822700896L;
044    
045            public ObjectPropertyInverse(String name) {
046                    super(name);
047            }
048    
049            public int getLength() {
050                    return 2;
051            }
052                    
053            public String toString(String baseURI, Map<String,String> prefixes) {
054                    return Helper.getAbbreviatedString(name, baseURI, prefixes) + "-";
055            }
056            
057            public String toKBSyntaxString(String baseURI, Map<String,String> prefixes) {
058                    return Helper.getAbbreviatedString(name, baseURI, prefixes) + "-";
059            }
060            
061            public void accept(KBElementVisitor visitor) {
062                    visitor.visit(this);
063            }
064    
065            /* (non-Javadoc)
066             * @see org.dllearner.core.owl.KBElement#toManchesterSyntaxString(java.lang.String, java.util.Map)
067             */
068            @Override
069            public String toManchesterSyntaxString(String baseURI, Map<String, String> prefixes) {
070                    return "OBJECTPROPERTYINVERSE NOT IMPLEMENTED";
071            }       
072    }