001 package org.apache.maven.repository; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022 import java.util.ArrayList; 023 import java.util.List; 024 025 /** 026 * MetadataGraph node - as it's a directed graph - holds adjacency lists for incident and exident nodes 027 * 028 * @author Oleg Gusakov 029 * 030 */ 031 public class MetadataGraphNode 032 { 033 /** node payload */ 034 MavenArtifactMetadata metadata; 035 036 /** nodes, incident to this (depend on me) */ 037 List<MetadataGraphNode> inNodes; 038 039 /** nodes, exident to this (I depend on) */ 040 List<MetadataGraphNode> exNodes; 041 042 public MetadataGraphNode() 043 { 044 inNodes = new ArrayList<MetadataGraphNode>(4); 045 exNodes = new ArrayList<MetadataGraphNode>(8); 046 } 047 048 public MetadataGraphNode( MavenArtifactMetadata metadata ) 049 { 050 this(); 051 this.metadata = metadata; 052 } 053 054 public MetadataGraphNode addIncident( MetadataGraphNode node ) 055 { 056 inNodes.add( node ); 057 return this; 058 } 059 060 public MetadataGraphNode addExident( MetadataGraphNode node ) 061 { 062 exNodes.add( node ); 063 return this; 064 } 065 066 @Override 067 public boolean equals( Object obj ) 068 { 069 if ( obj == null ) 070 { 071 return false; 072 } 073 074 if ( MetadataGraphNode.class.isAssignableFrom( obj.getClass() ) ) 075 { 076 MetadataGraphNode node2 = (MetadataGraphNode) obj; 077 078 if ( node2.metadata == null ) 079 { 080 return metadata == null; 081 } 082 083 return metadata == null ? false : metadata.toString().equals( node2.metadata.toString() ); 084 } 085 else 086 { 087 return super.equals( obj ); 088 } 089 } 090 091 @Override 092 public int hashCode() 093 { 094 if ( metadata == null ) 095 { 096 return super.hashCode(); 097 } 098 099 return metadata.toString().hashCode(); 100 } 101 }