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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.providers;
20  
21  import javax.inject.Provider;
22  
23  import java.util.Arrays;
24  import java.util.Collections;
25  import java.util.HashMap;
26  import java.util.LinkedHashMap;
27  
28  import org.apache.maven.lifecycle.Lifecycle;
29  import org.apache.maven.lifecycle.mapping.LifecyclePhase;
30  
31  /**
32   * Base lifecycle provider.
33   */
34  public abstract class AbstractLifecycleProvider implements Provider<Lifecycle> {
35      private final Lifecycle lifecycle;
36  
37      protected AbstractLifecycleProvider(String id, String[] phases, String[] pluginBindings) {
38          HashMap<String, LifecyclePhase> defaultBindings = null;
39          if (pluginBindings != null) {
40              final int len = pluginBindings.length;
41  
42              if (len < 2 || len % 2 != 0) {
43                  throw new IllegalArgumentException("Plugin bindings must have more than 0, even count of elements");
44              }
45  
46              defaultBindings = new LinkedHashMap<>(len / 2);
47  
48              for (int i = 0; i < len; i += 2) {
49                  defaultBindings.put(pluginBindings[i], new LifecyclePhase(pluginBindings[i + 1]));
50              }
51          }
52  
53          this.lifecycle = new Lifecycle(
54                  id,
55                  Collections.unmodifiableList(Arrays.asList(phases)),
56                  defaultBindings == null ? null : Collections.unmodifiableMap(defaultBindings));
57      }
58  
59      @Override
60      public Lifecycle get() {
61          return lifecycle;
62      }
63  }