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18 package org.apache.commons.logging.impl;
19
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21 import java.io.Serializable;
22 import org.apache.commons.logging.Log;
23
24
25 /***
26 * <p>Trivial implementation of Log that throws away all messages. No
27 * configurable system properties are supported.</p>
28 *
29 * @author <a href="mailto:sanders@apache.org">Scott Sanders</a>
30 * @author Rod Waldhoff
31 * @version $Id: NoOpLog.java 155426 2005-02-26 13:10:49Z dirkv $
32 */
33 public class NoOpLog implements Log, Serializable {
34
35 /*** Convenience constructor */
36 public NoOpLog() { }
37 /*** Base constructor */
38 public NoOpLog(String name) { }
39 /*** Do nothing */
40 public void trace(Object message) { }
41 /*** Do nothing */
42 public void trace(Object message, Throwable t) { }
43 /*** Do nothing */
44 public void debug(Object message) { }
45 /*** Do nothing */
46 public void debug(Object message, Throwable t) { }
47 /*** Do nothing */
48 public void info(Object message) { }
49 /*** Do nothing */
50 public void info(Object message, Throwable t) { }
51 /*** Do nothing */
52 public void warn(Object message) { }
53 /*** Do nothing */
54 public void warn(Object message, Throwable t) { }
55 /*** Do nothing */
56 public void error(Object message) { }
57 /*** Do nothing */
58 public void error(Object message, Throwable t) { }
59 /*** Do nothing */
60 public void fatal(Object message) { }
61 /*** Do nothing */
62 public void fatal(Object message, Throwable t) { }
63
64 /***
65 * Debug is never enabled.
66 *
67 * @return false
68 */
69 public final boolean isDebugEnabled() { return false; }
70
71 /***
72 * Error is never enabled.
73 *
74 * @return false
75 */
76 public final boolean isErrorEnabled() { return false; }
77
78 /***
79 * Fatal is never enabled.
80 *
81 * @return false
82 */
83 public final boolean isFatalEnabled() { return false; }
84
85 /***
86 * Info is never enabled.
87 *
88 * @return false
89 */
90 public final boolean isInfoEnabled() { return false; }
91
92 /***
93 * Trace is never enabled.
94 *
95 * @return false
96 */
97 public final boolean isTraceEnabled() { return false; }
98
99 /***
100 * Warn is never enabled.
101 *
102 * @return false
103 */
104 public final boolean isWarnEnabled() { return false; }
105
106 }