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Java > Open Source Codes > org > apache > commons > logging > impl > NoOpLog


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
18 package org.apache.commons.logging.impl;
19
20
21 import java.io.Serializable JavaDoc;
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,v 1.8 2004/06/06 21:13:12 rdonkin Exp $
32  */
33 public class NoOpLog implements Log, Serializable JavaDoc {
34
35     /** Convenience constructor */
36     public NoOpLog() { }
37     /** Base constructor */
38     public NoOpLog(String JavaDoc name) { }
39     /** Do nothing */
40     public void trace(Object JavaDoc message) { }
41     /** Do nothing */
42     public void trace(Object JavaDoc message, Throwable JavaDoc t) { }
43     /** Do nothing */
44     public void debug(Object JavaDoc message) { }
45     /** Do nothing */
46     public void debug(Object JavaDoc message, Throwable JavaDoc t) { }
47     /** Do nothing */
48     public void info(Object JavaDoc message) { }
49     /** Do nothing */
50     public void info(Object JavaDoc message, Throwable JavaDoc t) { }
51     /** Do nothing */
52     public void warn(Object JavaDoc message) { }
53     /** Do nothing */
54     public void warn(Object JavaDoc message, Throwable JavaDoc t) { }
55     /** Do nothing */
56     public void error(Object JavaDoc message) { }
57     /** Do nothing */
58     public void error(Object JavaDoc message, Throwable JavaDoc t) { }
59     /** Do nothing */
60     public void fatal(Object JavaDoc message) { }
61     /** Do nothing */
62     public void fatal(Object JavaDoc message, Throwable JavaDoc 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 }
107
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