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.math.NumberUtils; 023 024public class FeedbackEdge implements Comparable<FeedbackEdge> { 025 026 private Edge edge; 027 private double relativeWeight; 028 private int occurences; 029 private final int hashcode; 030 031 public FeedbackEdge(Edge edge, int occurences) { 032 this.edge = edge; 033 this.hashcode = edge.hashCode(); 034 this.occurences = occurences; 035 this.relativeWeight = (double) edge.getWeight() / occurences; 036 } 037 038 protected Edge getEdge() { 039 return edge; 040 } 041 042 protected int getWeight() { 043 return edge.getWeight(); 044 } 045 046 protected double getRelativeWeight() { 047 return relativeWeight; 048 } 049 050 protected int getOccurences() { 051 return occurences; 052 } 053 054 public int compareTo(FeedbackEdge feedbackEdge) { 055 if (this.getRelativeWeight() < feedbackEdge.getRelativeWeight()) { 056 return -1; 057 } 058 if (NumberUtils.compare(this.getRelativeWeight(), feedbackEdge.getRelativeWeight())==0) { 059 return this.getEdge().getFrom().toString().compareTo(feedbackEdge.getEdge().getFrom().toString()); 060 } 061 return 1; 062 } 063 064 @Override 065 public boolean equals(Object obj) { 066 if (!(obj instanceof FeedbackEdge) || this.hashCode() != obj.hashCode()) { 067 return false; 068 } 069 FeedbackEdge otherEdge = (FeedbackEdge) obj; 070 return edge.equals(otherEdge.edge); 071 } 072 073 @Override 074 public int hashCode() { 075 return hashcode; 076 } 077}