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.commons.logging;
18
19
20 /**
21 * <p>An exception that is thrown only if a suitable <code>LogFactory</code>
22 * or <code>Log</code> instance cannot be created by the corresponding
23 * factory methods.</p>
24 *
25 * <p>In this version of JCL, this exception will never be thrown in practice. However, it is
26 * included here to ensure total compile time and run time compatibility with the original JCL 1.0.4.
27 *
28 * @author Craig R. McClanahan
29 */
30
31 public class LogConfigurationException extends RuntimeException {
32
33
34 /**
35 * Construct a new exception with <code>null</code> as its detail message.
36 */
37 public LogConfigurationException() {
38
39 super();
40
41 }
42
43
44 /**
45 * Construct a new exception with the specified detail message.
46 *
47 * @param message The detail message
48 */
49 public LogConfigurationException(String message) {
50
51 super(message);
52
53 }
54
55
56 /**
57 * Construct a new exception with the specified cause and a derived
58 * detail message.
59 *
60 * @param cause The underlying cause
61 */
62 public LogConfigurationException(Throwable cause) {
63
64 this((cause == null) ? null : cause.toString(), cause);
65
66 }
67
68
69 /**
70 * Construct a new exception with the specified detail message and cause.
71 *
72 * @param message The detail message
73 * @param cause The underlying cause
74 */
75 public LogConfigurationException(String message, Throwable cause) {
76
77 super(message + " (Caused by " + cause + ")");
78 this.cause = cause; // Two-argument version requires JDK 1.4 or later
79
80 }
81
82
83 /**
84 * The underlying cause of this exception.
85 */
86 protected Throwable cause = null;
87
88
89 /**
90 * Return the underlying cause of this exception (if any).
91 */
92 public Throwable getCause() {
93
94 return (this.cause);
95
96 }
97
98
99 }