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.Collection;
24
25 /**
26 * This is the main graph data structure used by the RepositorySystem to present tree and graph objects.
27 *
28 * @author Oleg Gusakov
29 * @version $Id: MetadataGraph.java 958295 2010-06-26 23:16:18Z hboutemy $
30 *
31 */
32 public class MetadataGraph
33 {
34 /** all graph nodes */
35 Collection<MetadataGraphNode> nodes;
36
37 /** entry point for tree-like structures */
38 MetadataGraphNode entry;
39
40 public MetadataGraph( MetadataGraphNode entry )
41 {
42 this();
43
44 this.entry = entry;
45 }
46
47 public MetadataGraph()
48 {
49 nodes = new ArrayList<MetadataGraphNode>( 64 );
50 }
51
52 public void addNode( MetadataGraphNode node )
53 {
54 nodes.add( node );
55 }
56
57 /**
58 * find a node by the GAV (metadata)
59 *
60 * @param md
61 * @return
62 */
63 public MetadataGraphNode findNode( MavenArtifactMetadata md )
64 {
65 for ( MetadataGraphNode mgn : nodes )
66 {
67 if ( mgn.metadata.equals( md ) )
68 {
69 return mgn;
70 }
71 }
72
73 MetadataGraphNode node = new MetadataGraphNode( md );
74 addNode( node );
75 return node;
76 }
77
78 /**
79 * getter
80 *
81 * @return
82 */
83 public MetadataGraphNode getEntry()
84 {
85 return entry;
86 }
87
88 /**
89 * getter
90 *
91 * @return
92 */
93 public Collection<MetadataGraphNode> getNodes()
94 {
95 return nodes;
96 }
97 }