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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.apache.log4j.spi.LoggerFactory;
20  import org.slf4j.spi.LocationAwareLogger;
21  
22  /**
23   * <p>
24   * This class is a minimal implementation of the original
25   * <code>org.apache.log4j.Logger</code> class (as found in log4j 1.2) 
26   * delegating all calls to a {@link org.slf4j.Logger} instance.
27   * </p>
28   *
29   * @author Ceki G&uuml;lc&uuml; 
30   * */
31  @SuppressWarnings("rawtypes")
32  public class Logger extends Category {
33    
34    private static final String LOGGER_FQCN = Logger.class.getName();
35    
36    protected Logger(String name) {
37      super(name);
38    }
39  
40    public static Logger getLogger(String name) {
41      return Log4jLoggerFactory.getLogger(name);
42    }
43  
44    public static Logger getLogger(String name, LoggerFactory loggerFactory) {
45      return Log4jLoggerFactory.getLogger(name,loggerFactory);
46    }
47  
48    public static Logger getLogger(Class clazz) {
49      return getLogger(clazz.getName());
50    }
51    
52    /**
53     * Does the obvious.
54     * 
55     * @return
56     */
57    public static Logger getRootLogger() {
58      return Log4jLoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
59    }
60  
61    
62    /**
63     * Delegates to {@link org.slf4j.Logger#isTraceEnabled} 
64     * method of SLF4J.
65     */
66    public boolean isTraceEnabled() {
67      return slf4jLogger.isTraceEnabled();
68    }
69    
70    /**
71     * Delegates to {@link org.slf4j.Logger#trace(String)} method in SLF4J.
72     */
73    public void trace(Object message) {
74      differentiatedLog(null, LOGGER_FQCN, LocationAwareLogger.TRACE_INT, message, null);
75    }
76  
77    /**
78     * Delegates to {@link org.slf4j.Logger#trace(String,Throwable)} 
79     * method in SLF4J.
80     */
81    public void trace(Object message, Throwable t) {
82      differentiatedLog(null, LOGGER_FQCN, LocationAwareLogger.TRACE_INT, message, null);
83    }
84  
85  }