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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  public class Logger extends Category {
32    
33    private static final String LOGGER_FQCN = Logger.class.getName();
34    
35    protected Logger(String name) {
36      super(name);
37    }
38  
39    public static Logger getLogger(String name) {
40      return Log4jLoggerFactory.getLogger(name);
41    }
42  
43    public static Logger getLogger(String name, LoggerFactory loggerFactory) {
44      return Log4jLoggerFactory.getLogger(name,loggerFactory);
45    }
46  
47    public static Logger getLogger(Class clazz) {
48      return getLogger(clazz.getName());
49    }
50    
51    /**
52     * Does the obvious.
53     * 
54     * @return
55     */
56    public static Logger getRootLogger() {
57      return Log4jLoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
58    }
59  
60    
61    /**
62     * Delegates to {@link org.slf4j.Logger#isTraceEnabled} 
63     * method of SLF4J.
64     */
65    public boolean isTraceEnabled() {
66      return slf4jLogger.isTraceEnabled();
67    }
68    
69    /**
70     * Delegates to {@link org.slf4j.Logger#trace(String)} method in SLF4J.
71     */
72    public void trace(Object message) {
73      differentiatedLog(null, LOGGER_FQCN, LocationAwareLogger.TRACE_INT, message, null);
74    }
75  
76    /**
77     * Delegates to {@link org.slf4j.Logger#trace(String,Throwable)} 
78     * method in SLF4J.
79     */
80    public void trace(Object message, Throwable t) {
81      differentiatedLog(null, LOGGER_FQCN, LocationAwareLogger.TRACE_INT, message, null);
82    }
83  
84  }