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 * <p>
21 * An exception that is thrown only if a suitable <code>LogFactory</code> or
22 * <code>Log</code> instance cannot be created by the corresponding factory
23 * methods.
24 *
25 *
26 * <p>
27 * In this version of JCL, this exception will never be thrown in practice.
28 * However, it is included here to ensure total compile time and run time
29 * compatibility with the original JCL 1.0.4.
30 *
31 * @author Craig R. McClanahan
32 */
33
34 public class LogConfigurationException extends RuntimeException {
35
36 private static final long serialVersionUID = 8486587136871052495L;
37
38 /**
39 * Construct a new exception with <code>null</code> as its detail message.
40 */
41 public LogConfigurationException() {
42 super();
43 }
44
45 /**
46 * Construct a new exception with the specified detail message.
47 *
48 * @param message
49 * The detail message
50 */
51 public LogConfigurationException(String message) {
52 super(message);
53 }
54
55 /**
56 * Construct a new exception with the specified cause and a derived detail
57 * message.
58 *
59 * @param cause
60 * The underlying cause
61 */
62 public LogConfigurationException(Throwable cause) {
63
64 this((cause == null) ? null : cause.toString(), cause);
65
66 }
67
68 /**
69 * Construct a new exception with the specified detail message and cause.
70 *
71 * @param message
72 * The detail message
73 * @param cause
74 * The underlying cause
75 */
76 public LogConfigurationException(String message, Throwable cause) {
77 super(message + " (Caused by " + cause + ")");
78 this.cause = cause; // Two-argument version requires JDK 1.4 or later
79 }
80
81 /**
82 * The underlying cause of this exception.
83 */
84 protected Throwable cause = null;
85
86 /**
87 * Return the underlying cause of this exception (if any).
88 */
89 public Throwable getCause() {
90 return (this.cause);
91 }
92
93 }