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1   package org.codehaus.plexus.lifecycle;
2   
3   /*
4    * Copyright 2001-2006 Codehaus Foundation.
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * 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, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  import java.util.concurrent.ConcurrentHashMap;
20  import java.util.concurrent.ConcurrentMap;
21  
22  /**
23   * @author Jason van Zyl
24   * @version $Id$
25   */
26  public class DefaultLifecycleHandlerManager
27      implements LifecycleHandlerManager
28  {
29      private final ConcurrentMap<String, LifecycleHandler> lifecycleHandlers = new ConcurrentHashMap<String, LifecycleHandler>();
30  
31      private String defaultLifecycleHandlerId = "plexus";
32  
33      public void addLifecycleHandler( LifecycleHandler lifecycleHandler )
34      {
35          lifecycleHandlers.put( lifecycleHandler.getId(), lifecycleHandler );
36      }
37  
38      public void initialize()
39      {
40          for ( LifecycleHandler lifecycleHandler : lifecycleHandlers.values() )
41          {
42              lifecycleHandler.initialize();
43          }
44      }
45  
46      public LifecycleHandler getLifecycleHandler( String id )
47          throws UndefinedLifecycleHandlerException
48      {
49          if ( id == null )
50          {
51              id = defaultLifecycleHandlerId;
52          }
53  
54          LifecycleHandler lifecycleHandler = lifecycleHandlers.get( id );
55  
56          if ( lifecycleHandler == null )
57          {
58              throw new UndefinedLifecycleHandlerException( "Specified lifecycle handler cannot be found: " + id );
59          }
60  
61          return lifecycleHandler;
62      }   
63  }