org.sonar.graph.FeedbackEdge.java Source code

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Here is the source code for org.sonar.graph.FeedbackEdge.java

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/*
 * Sonar, open source software quality management tool.
 * Copyright (C) 2008-2012 SonarSource
 * mailto:contact AT sonarsource DOT com
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.graph;

import org.apache.commons.lang.math.NumberUtils;

public class FeedbackEdge implements Comparable<FeedbackEdge> {

    private Edge edge;
    private double relativeWeight;
    private int occurences;
    private final int hashcode;

    public FeedbackEdge(Edge edge, int occurences) {
        this.edge = edge;
        this.hashcode = edge.hashCode();
        this.occurences = occurences;
        this.relativeWeight = (double) edge.getWeight() / occurences;
    }

    protected Edge getEdge() {
        return edge;
    }

    protected int getWeight() {
        return edge.getWeight();
    }

    protected double getRelativeWeight() {
        return relativeWeight;
    }

    protected int getOccurences() {
        return occurences;
    }

    public int compareTo(FeedbackEdge feedbackEdge) {
        if (this.getRelativeWeight() < feedbackEdge.getRelativeWeight()) {
            return -1;
        }
        if (NumberUtils.compare(this.getRelativeWeight(), feedbackEdge.getRelativeWeight()) == 0) {
            return this.getEdge().getFrom().toString().compareTo(feedbackEdge.getEdge().getFrom().toString());
        }
        return 1;
    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof FeedbackEdge) || this.hashCode() != obj.hashCode()) {
            return false;
        }
        FeedbackEdge otherEdge = (FeedbackEdge) obj;
        return edge.equals(otherEdge.edge);
    }

    @Override
    public int hashCode() {
        return hashcode;
    }
}