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1   package org.codehaus.plexus.logging;
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  /**
20   * @author Jason van Zyl
21   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
22   * @version $Id$
23   */
24  public abstract class AbstractLogEnabled
25      implements LogEnabled
26  {
27      private Logger logger;
28  
29      public void enableLogging( Logger logger )
30      {
31          this.logger = logger;
32      }
33  
34      protected Logger getLogger()
35      {
36          return logger;
37      }
38  
39      protected void setupLogger( Object component )
40      {
41          setupLogger( component, logger );
42      }
43  
44      protected void setupLogger( Object component, String subCategory )
45      {
46          if ( subCategory == null )
47          {
48              throw new IllegalStateException( "Logging category must be defined." );
49          }
50  
51          Logger logger = this.logger.getChildLogger( subCategory );
52  
53          setupLogger( component, logger );
54      }
55  
56      protected void setupLogger( Object component, Logger logger )
57      {
58          if ( component instanceof LogEnabled )
59          {
60              ( (LogEnabled) component ).enableLogging( logger );
61          }
62      }
63  }