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