1   /*
2    * Copyright 2001-2004 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.apache.log4j;
18  
19  /**
20   * <p>
21   * This class is a minimal implementation of the original
22   * <code>org.apache.log4j.Logger</code> class (as found in log4j 1.2) 
23   * by delegation of all calls to a {@link org.slf4j.Logger.Logger} instance.
24   * </p>
25   *
26   * @author Ceki G&uuml;lc&uuml; 
27   * */
28  public class Logger extends Category {
29  
30    Logger(String name) {
31      super(name);
32    }
33  
34    public static Logger getLogger(String name) {
35      return Log4jLoggerFactory.getLogger(name);
36    }
37  
38    public static Logger getLogger(Class clazz) {
39      return getLogger(clazz.getName());
40    }
41    
42    /**
43     * Does the obvious.
44     * 
45     * @return
46     */
47    public static Logger getRootLogger() {
48      return Log4jLoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
49    }
50  
51    
52    /**
53     * Delegates to {@link org.slf4j.Logger#isTraceEnabled} 
54     * method of SLF4J.
55     */
56    public boolean isTraceEnabled() {
57      return slf4jLogger.isTraceEnabled();
58    }
59    
60    /**
61     * Delegates to {@link org.slf4j.Logger#trace(String)} method in SLF4J.
62     */
63    public void trace(Object message) {
64      // casting to String as SLF4J only accepts String instances, not Object
65      // instances.
66      slf4jLogger.trace(convertToString(message));
67    }
68  
69    /**
70     * Delegates to {@link org.slf4j.Logger#trace(String,Throwable)} 
71     * method in SLF4J.
72     */
73    public void trace(Object message, Throwable t) {
74      slf4jLogger.trace(convertToString(message), t);
75    }
76  
77  }