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.utilities.datastructures;
021    
022    import org.dllearner.kb.extraction.LiteralNode;
023    
024    import com.hp.hpl.jena.rdf.model.RDFNode;
025    
026    /**
027     * A container which can hold two Strings, mainly used as a helper.
028     * Also used as pre form, if you want to create triple, that have the same subject
029     * @author Sebastian Hellmann
030     */
031    public class RDFNodeTuple implements Comparable<RDFNodeTuple>{
032    
033            public RDFNode a;
034            public RDFNode b;
035    
036            public RDFNodeTuple(RDFNode a, RDFNode b) {
037                    this.a = a;
038                    this.b = b;
039            }
040    
041            @Override
042            public String toString() {
043                    return "<" + a.toString() + "|" + b.toString() + ">";
044            }
045    
046            public boolean equals(RDFNodeTuple t) {
047                    return ((b.toString().equals(t.b.toString())) && (a.toString().equals(t.a)));
048            }
049            
050            public int compareTo(RDFNodeTuple t){
051                    int comp = a.toString().compareTo(t.a.toString());
052                    if( comp == 0 ){
053                            return b.toString().compareTo(t.b.toString());
054                    }else return comp;
055            }
056            
057            public boolean aPartContains(String partOf) {
058                    return a.toString().contains(partOf);
059            }
060            
061            public boolean bPartContains(String partOf) {
062                    return b.toString().contains(partOf);
063            }
064            
065            
066            public String getNTriple (String subject){
067                    String ret = "<"+subject+"> ";
068                    ret+="<"+a.toString()+"> ";
069                    if(b.isLiteral()){
070                            ret+=new LiteralNode(b).getNTripleForm();
071                            
072                    }else{
073                            ret+="<"+b.toString()+"> ";
074                    }
075                    ret+=".";
076                    return ret;
077            }
078    
079    }