View Javadoc

1   package org.apache.maven.lifecycle.internal;
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 org.apache.maven.project.MavenProject;
23  
24  import java.util.HashMap;
25  import java.util.List;
26  import java.util.Map;
27  
28  /**
29   * Provides the positional index of the project
30   * 
31   * @since 3.0
32   * @author Benjamin Bentmann
33   * @author Kristian Rosenvold (extracted class only)
34   *         <p/>
35   *         NOTE: This class is not part of any public api and can be changed or deleted without prior notice.
36   */
37  // Todo: Kristian wonders if this class really is necessary and if it overlaps other concepts.
38  public final class ProjectIndex
39  {
40  
41      private final Map<String, MavenProject> projects;
42  
43      private final Map<String, Integer> indices;
44  
45      public ProjectIndex( List<MavenProject> projects )
46      {
47          this.projects = new HashMap<String, MavenProject>( projects.size() * 2 );
48          this.indices = new HashMap<String, Integer>( projects.size() * 2 );
49  
50          for ( int i = 0; i < projects.size(); i++ )
51          {
52              MavenProject project = projects.get( i );
53              String key = BuilderCommon.getKey( project );
54  
55              this.getProjects().put( key, project );
56              this.getIndices().put( key, i );
57          }
58      }
59  
60      public Map<String, MavenProject> getProjects()
61      {
62          return projects;
63      }
64  
65      public Map<String, Integer> getIndices()
66      {
67          return indices;
68      }
69  }