/
Edge.java
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/
Edge.java
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/*
* Copyright 2020 Emory University
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package edu.emory.cs.graph;
/** @author Jinho D. Choi ({@code jinho.choi@emory.edu}) */
public class Edge implements Comparable<Edge> {
private int source;
private int target;
private double weight;
public Edge(int source, int target, double weight) {
init(source, target, weight);
}
public Edge(int source, int target) {
this(source, target, 0);
}
public Edge(Edge edge) {
this(edge.getSource(), edge.getTarget(), edge.getWeight());
}
private void init(int source, int target, double weight) {
setSource(source);
setTarget(target);
setWeight(weight);
}
public int getSource() {
return source;
}
public int getTarget() {
return target;
}
public double getWeight() {
return weight;
}
public void setSource(int vertex) {
source = vertex;
}
public void setTarget(int vertex) {
target = vertex;
}
public void setWeight(double weight) {
this.weight = weight;
}
public void addWeight(double weight) {
this.weight += weight;
}
@Override
public int compareTo(Edge edge) {
double diff = weight - edge.weight;
if (diff > 0) return 1;
else if (diff < 0) return -1;
else return 0;
}
public String toString() {
return String.format("%d <- %d : %f", getTarget(), getSource(), getWeight());
}
}