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    public class FeedbackEdge implements Comparable<FeedbackEdge> {
023    
024      private Edge edge;
025      private double relativeWeight;
026      private int occurences;
027      private final int hashcode;
028    
029      public FeedbackEdge(Edge edge, int occurences) {
030        this.edge = edge;
031        this.hashcode = edge.hashCode();
032        this.occurences = occurences;
033        this.relativeWeight = (double) edge.getWeight() / occurences;
034      }
035    
036      protected Edge getEdge() {
037        return edge;
038      }
039    
040      protected int getWeight() {
041        return edge.getWeight();
042      }
043    
044      protected double getRelativeWeight() {
045        return relativeWeight;
046      }
047    
048      protected int getOccurences() {
049        return occurences;
050      }
051    
052      public int compareTo(FeedbackEdge feedbackEdge) {
053        if (this.getRelativeWeight() < feedbackEdge.getRelativeWeight()) {
054          return -1;
055        }
056        if (this.getRelativeWeight() == feedbackEdge.getRelativeWeight()) {
057          return this.getEdge().getFrom().toString().compareTo(feedbackEdge.getEdge().getFrom().toString());
058        }
059        return 1;
060      }
061    
062      @Override
063      public boolean equals(Object obj) {
064        if (!(obj instanceof FeedbackEdge) || this.hashCode() != obj.hashCode()) {
065          return false;
066        }
067        FeedbackEdge otherEdge = (FeedbackEdge) obj;
068        return edge.equals(otherEdge.edge);
069      }
070    
071      @Override
072      public int hashCode() {
073        return hashcode;
074      }
075    }