001/**
002 * Copyright (C) 2007 - 2016, 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 */
019package org.dllearner.prolog;
020
021/**
022 * 
023 * @author Sebastian Bader
024 * 
025 */
026public class StringConstant extends Constant {
027        private String string;
028
029        public StringConstant(String src) {
030                string = src;
031        }
032
033        public String getString() {
034                return string;
035        }
036
037        @Override
038        public boolean isGround() {
039                return true;
040        }
041
042        @Override
043        public String toString() {
044                return "C[" + string + "]";
045        }
046
047        @Override
048        public String toPLString() {
049                return string;
050        }
051
052        @Override
053        public Term getInstance(Variable variable, Term term) {
054                return new StringConstant(string);
055        }
056
057        @Override
058        public boolean equals(Object obj) {
059                return string.equals(obj);
060        }
061
062        @Override
063        public int hashCode() {
064                return string.hashCode();
065        }
066
067        @Override
068        public Object clone() {
069                return new StringConstant(string);
070        }
071}