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  import org.slf4j.spi.LocationAwareLogger;
20  
21  /**
22   * <p>
23   * This class is a minimal implementation of the original
24   * <code>org.apache.log4j.Logger</code> class (as found in log4j 1.2) 
25   * by delegation of all calls to a {@link org.slf4j.Logger.Logger} instance.
26   * </p>
27   *
28   * @author Ceki G&uuml;lc&uuml; 
29   * */
30  public class Logger extends Category {
31    
32    private static final String LOGGER_FQCN = Logger.class.getName();
33    
34    Logger(String name) {
35      super(name);
36    }
37  
38    public static Logger getLogger(String name) {
39      return Log4jLoggerFactory.getLogger(name);
40    }
41  
42    public static Logger getLogger(Class clazz) {
43      return getLogger(clazz.getName());
44    }
45    
46    /**
47     * Does the obvious.
48     * 
49     * @return
50     */
51    public static Logger getRootLogger() {
52      return Log4jLoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
53    }
54  
55    
56    /**
57     * Delegates to {@link org.slf4j.Logger#isTraceEnabled} 
58     * method of SLF4J.
59     */
60    public boolean isTraceEnabled() {
61      return slf4jLogger.isTraceEnabled();
62    }
63    
64    /**
65     * Delegates to {@link org.slf4j.Logger#trace(String)} method in SLF4J.
66     */
67    public void trace(Object message) {
68      differentiatedLog(null, LOGGER_FQCN, LocationAwareLogger.TRACE_INT, message, null);
69    }
70  
71    /**
72     * Delegates to {@link org.slf4j.Logger#trace(String,Throwable)} 
73     * method in SLF4J.
74     */
75    public void trace(Object message, Throwable t) {
76      differentiatedLog(null, LOGGER_FQCN, LocationAwareLogger.TRACE_INT, message, null);
77    }
78  
79  }