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 */
020package org.sonar.graph;
021
022import org.apache.commons.lang.builder.ToStringBuilder;
023
024public 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}