1 package org.apache.maven.repository;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.ArrayList;
23 import java.util.List;
24
25 /**
26 * MetadataGraph node - as it's a directed graph - holds adjacency lists for incident and exident nodes
27 *
28 * @author Oleg Gusakov
29 *
30 */
31 public class MetadataGraphNode
32 {
33 /** node payload */
34 MavenArtifactMetadata metadata;
35
36 /** nodes, incident to this (depend on me) */
37 List<MetadataGraphNode> inNodes;
38
39 /** nodes, exident to this (I depend on) */
40 List<MetadataGraphNode> exNodes;
41
42 public MetadataGraphNode()
43 {
44 inNodes = new ArrayList<MetadataGraphNode>(4);
45 exNodes = new ArrayList<MetadataGraphNode>(8);
46 }
47
48 public MetadataGraphNode( MavenArtifactMetadata metadata )
49 {
50 this();
51 this.metadata = metadata;
52 }
53
54 public MetadataGraphNode addIncident( MetadataGraphNode node )
55 {
56 inNodes.add( node );
57 return this;
58 }
59
60 public MetadataGraphNode addExident( MetadataGraphNode node )
61 {
62 exNodes.add( node );
63 return this;
64 }
65
66 @Override
67 public boolean equals( Object obj )
68 {
69 if ( obj == null )
70 {
71 return false;
72 }
73
74 if ( MetadataGraphNode.class.isAssignableFrom( obj.getClass() ) )
75 {
76 MetadataGraphNode node2 = (MetadataGraphNode) obj;
77
78 if ( node2.metadata == null )
79 {
80 return metadata == null;
81 }
82
83 return metadata == null ? false : metadata.toString().equals( node2.metadata.toString() );
84 }
85 else
86 {
87 return super.equals( obj );
88 }
89 }
90
91 @Override
92 public int hashCode()
93 {
94 if ( metadata == null )
95 {
96 return super.hashCode();
97 }
98
99 return metadata.toString().hashCode();
100 }
101 }