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1   /*****************************************************************
2    * Licensed to the Apache Software Foundation (ASF) under one   *
3    * or more contributor license agreements.  See the NOTICE file *
4    * distributed with this work for additional information        *
5    * regarding copyright ownership.  The ASF licenses this file   *
6    * to you under the Apache License, Version 2.0 (the            *
7    * "License"); you may not use this file except in compliance   *
8    * with the License.  You may obtain a copy of the License at   *
9    *                                                              *
10   *   http://www.apache.org/licenses/LICENSE-2.0                 *
11   *                                                              *
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13   * software distributed under the License is distributed on an  *
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
15   * KIND, either express or implied.  See the License for the    *
16   * specific language governing permissions and limitations      *
17   * under the License.                                           *
18   ****************************************************************/
19  
20  package org.apache.james.nntpserver;
21  
22  /***
23   * Exception Wrapper, like javax.servlet.ServletException.
24   * Purpose is to catch and wrap exceptions into unchecked NNTP specific. 
25   * Protocol handler catches the exception and returns error info to client.
26   * Error Information is obtained by calling 'getMessage'
27   *
28   */
29  public class NNTPException extends RuntimeException {
30  
31      /***
32       * The encapsulated Throwable
33       */
34      private final Throwable t;
35  
36      /***
37       * Create an NNTPException with an error message and no
38       * encapsulated <code>Throwable</code>
39       *
40       * @param msg the error message for this exception
41       */
42      public NNTPException(String msg) {
43          super(msg);
44          this.t = null;
45      }
46  
47      /***
48       * Create an NNTPException with an error message and an
49       * encapsulated <code>Throwable</code>
50       *
51       * @param msg the error message for this exception
52       * @param t the encapsulated <code>Throwable</code>
53       */
54      public NNTPException(String msg,Throwable t) {
55          super(msg+((t!=null)?": "+t.toString():""));
56          this.t = t;
57      }
58  
59      /***
60       * Create an NNTPException with an
61       * encapsulated <code>Throwable</code>
62       *
63       * @param t the encapsulated <code>Throwable</code>
64       */
65      public NNTPException(Throwable t) {
66          super(t.toString());
67          this.t = t;
68      }
69  }