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.utilities.datastructures;
020
021/**
022 * A container which can hold two Strings, mainly used as a helper.
023 * Also used as pre form, if you want to create triple, that have the same subject
024 * @author Sebastian Hellmann
025 */
026public class StringTuple implements Comparable<StringTuple>{
027
028        public String a;
029        public String b;
030
031        public StringTuple(String a, String b) {
032                this.a = a;
033                this.b = b;
034        }
035
036        @Override
037        public String toString() {
038                return "<" + a + "|" + b + ">";
039        }
040
041        @Override
042        public boolean equals(Object o) {
043                if (this == o) return true;
044                if (o == null || getClass() != o.getClass()) return false;
045
046                StringTuple that = (StringTuple) o;
047
048                if (!a.equals(that.a)) return false;
049                return b.equals(that.b);
050        }
051
052        @Override
053        public int hashCode() {
054                int result = a.hashCode();
055                result = 31 * result + b.hashCode();
056                return result;
057        }
058
059        @Override
060        public int compareTo(StringTuple t){
061                int comp = a.compareTo(t.a);
062                if( comp == 0 ){
063                        return b.compareTo(t.b);
064                }else return comp;
065        }
066
067}