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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   */
23  public abstract class AbstractLogEnabled implements LogEnabled {
24      private Logger logger;
25  
26      public void enableLogging(Logger logger) {
27          this.logger = logger;
28      }
29  
30      protected Logger getLogger() {
31          return logger;
32      }
33  
34      protected void setupLogger(Object component) {
35          setupLogger(component, logger);
36      }
37  
38      protected void setupLogger(Object component, String subCategory) {
39          if (subCategory == null) {
40              throw new IllegalStateException("Logging category must be defined.");
41          }
42  
43          Logger logger = this.logger.getChildLogger(subCategory);
44  
45          setupLogger(component, logger);
46      }
47  
48      protected void setupLogger(Object component, Logger logger) {
49          if (component instanceof LogEnabled) {
50              ((LogEnabled) component).enableLogging(logger);
51          }
52      }
53  }