001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar 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 GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.graph;
021    
022    import org.apache.commons.lang.builder.ToStringBuilder;
023    
024    public class StringEdge implements Edge<String> {
025    
026      private final String from;
027      private final String to;
028      private int weight;
029    
030      public StringEdge(String from, String to) {
031        this.from = from;
032        this.to = to;
033        this.weight = 1;
034      }
035    
036      public StringEdge(String from, String to, int weight) {
037        this(from, to);
038        this.weight = weight;
039      }
040    
041      public String getFrom() {
042        return from;
043      }
044    
045      public String getTo() {
046        return to;
047      }
048    
049      public int getWeight() {
050        return weight;
051      }
052    
053      @Override
054      public boolean equals(Object obj) {
055        if (!(obj instanceof StringEdge)) {
056          return false;
057        }
058        StringEdge edge = (StringEdge) obj;
059        return from.equals(edge.from) && to.equals(edge.to);
060      }
061    
062      @Override
063      public int hashCode() {
064        return 3*from.hashCode() + to.hashCode(); //NOSONAR Magic number 3 is suitable here
065      }
066    
067      @Override
068      public String toString() {
069        return new ToStringBuilder(this).append("from", from).append("to", to).toString();
070      }
071    }