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1   package org.codehaus.plexus.component.manager;
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 org.codehaus.plexus.component.factory.ComponentInstantiationException;
20  import org.codehaus.plexus.component.repository.exception.ComponentLifecycleException;
21  import org.codehaus.plexus.component.repository.ComponentDescriptor;
22  import org.codehaus.plexus.MutablePlexusContainer;
23  import org.codehaus.plexus.lifecycle.LifecycleHandler;
24  
25  /**
26   * Creates a new component manager for every lookup
27   *
28   * @author Jason van Zyl
29   *
30   * @version $Id$
31   */
32  public class PerLookupComponentManager<T>
33      extends AbstractComponentManager<T>
34  {
35      public PerLookupComponentManager( MutablePlexusContainer container,
36                                        LifecycleHandler lifecycleHandler,
37                                        ComponentDescriptor<T> componentDescriptor,
38                                        String role,
39                                        String roleHint )
40      {
41          super( container, lifecycleHandler, componentDescriptor, role, roleHint );
42      }
43  
44      public void dispose()
45      {
46      }
47  
48      public T getComponent( )
49          throws ComponentInstantiationException, ComponentLifecycleException
50      {
51          T component = createComponentInstance();
52  
53          return component;
54      }
55  
56      public void release( Object component )
57          throws ComponentLifecycleException
58      {
59          decrementConnectionCount();
60          endComponentLifecycle( component );
61          // non cleanup map references for per-lookup cause leak
62          componentContextRealms.remove( component );
63      }
64  }