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1   package org.codehaus.plexus.component.factory;
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.classworlds.ClassRealmAdapter;
20  import org.codehaus.plexus.PlexusContainer;
21  import org.codehaus.plexus.classworlds.realm.ClassRealm;
22  import org.codehaus.plexus.component.repository.ComponentDescriptor;
23  
24  /**
25   *
26   *
27   * @author Jason van Zyl
28   *
29   * @version $Id$
30   */
31  public abstract class AbstractComponentFactory
32      implements ComponentFactory
33  {
34      // This is for backward compatibility
35      private String id;
36  
37      public Object newInstance( ComponentDescriptor componentDescriptor, ClassRealm classRealm, PlexusContainer container )
38          throws ComponentInstantiationException
39      {
40          // for backward-compatibility with the old component factories delegate to the old-style method
41          return newInstance( componentDescriptor, ClassRealmAdapter.getInstance( classRealm ), container );
42      }
43  
44      protected Object newInstance( ComponentDescriptor componentDescriptor,
45                                    org.codehaus.classworlds.ClassRealm classRealm, PlexusContainer container )
46          throws ComponentInstantiationException
47      {
48          throw new IllegalStateException( getClass().getName() + " does not implement component creation." );
49      }
50  
51  }