1 /*--------------------------------------------------------------------------
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2 * Copyright 2004 Taro L. Saito
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4 * Licensed under the Apache License, Version 2.0 (the "License");
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5 * you may not use this file except in compliance with the License.
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6 * You may obtain a copy of the License at
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8 * http://www.apache.org/licenses/LICENSE-2.0
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10 * Unless required by applicable law or agreed to in writing, software
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11 * distributed under the License is distributed on an "AS IS" BASIS,
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 * See the License for the specific language governing permissions and
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14 * limitations under the License.
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15 *--------------------------------------------------------------------------*/
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16 //--------------------------------------
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20 // Since: 2004/12/27
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22 // $URL: http://www.xerial.org/svn/project/XerialJ/trunk/xerial-core/src/main/java/org/xerial/util/graph/Edge.java $
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24 //--------------------------------------
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25 package org.xerial.util.graph;
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28 * Edge structure from source node ID to destination node ID
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33 public class Edge implements Comparable<Edge>
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35 final int srcNodeID;
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36 final int destNodeID;
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43 public Edge(int src, int dest)
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45 this.srcNodeID = src;
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46 this.destNodeID = dest;
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49 public int getDestNodeID()
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54 public int getSourceNodeID()
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59 public boolean equals(Object o)
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61 if (o instanceof Edge)
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64 return (srcNodeID == e.getSourceNodeID()) && (destNodeID == e.getDestNodeID());
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71 public int hashCode()
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74 hash += srcNodeID * 271;
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75 hash += destNodeID * 271;
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79 public int compareTo(Edge o)
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81 int diff = srcNodeID - o.getSourceNodeID();
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82 return (diff != 0) ? diff : destNodeID - o.getDestNodeID();
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85 public String toString()
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87 return String.format("(%d, %d)", srcNodeID, destNodeID);
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