1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.lifecycle.internal;
20
21 import java.util.HashMap;
22 import java.util.List;
23 import java.util.Map;
24 import org.apache.maven.lifecycle.internal.builder.BuilderCommon;
25 import org.apache.maven.project.MavenProject;
26
27 /**
28 * <p>
29 * Provides the positional index of the project
30 * </p>
31 * <strong>NOTE:</strong> This class is not part of any public api and can be changed or deleted without prior notice.
32 *
33 * @since 3.0
34 * @author Benjamin Bentmann
35 * @author Kristian Rosenvold (extracted class only)
36 */
37 // TODO Kristian wonders if this class really is necessary and if it overlaps other concepts.
38 public final class ProjectIndex {
39
40 private final Map<String, MavenProject> projects;
41
42 private final Map<String, Integer> indices;
43
44 public ProjectIndex(List<MavenProject> projects) {
45 this.projects = new HashMap<>(projects.size() * 2);
46 this.indices = new HashMap<>(projects.size() * 2);
47
48 for (int i = 0; i < projects.size(); i++) {
49 MavenProject project = projects.get(i);
50 String key = BuilderCommon.getKey(project);
51
52 this.getProjects().put(key, project);
53 this.getIndices().put(key, i);
54 }
55 }
56
57 public Map<String, MavenProject> getProjects() {
58 return projects;
59 }
60
61 public Map<String, Integer> getIndices() {
62 return indices;
63 }
64 }