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Java > Open Source Codes > org > apache > mina > filter > codec > ProtocolDecoderException


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  *
12  * Unless required by applicable law or agreed to in writing,
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.mina.filter.codec;
21
22 import org.apache.mina.common.ByteBuffer;
23
24 /**
25  * An exception that is thrown when {@link ProtocolDecoder}
26  * cannot understand or failed to validate the specified {@link ByteBuffer}
27  * content.
28  *
29  * @author The Apache Directory Project (mina-dev@directory.apache.org)
30  * @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (금, 13 7월 2007) $
31  */
32 public class ProtocolDecoderException extends ProtocolCodecException {
33     private static final long serialVersionUID = 3545799879533408565L;
34
35     private String JavaDoc hexdump;
36
37     /**
38      * Constructs a new instance.
39      */
40     public ProtocolDecoderException() {
41     }
42
43     /**
44      * Constructs a new instance with the specified message.
45      */
46     public ProtocolDecoderException(String JavaDoc message) {
47         super(message);
48     }
49
50     /**
51      * Constructs a new instance with the specified cause.
52      */
53     public ProtocolDecoderException(Throwable JavaDoc cause) {
54         super(cause);
55     }
56
57     /**
58      * Constructs a new instance with the specified message and the specified
59      * cause.
60      */
61     public ProtocolDecoderException(String JavaDoc message, Throwable JavaDoc cause) {
62         super(message, cause);
63     }
64
65     /**
66      * Returns the message and the hexdump of the unknown part.
67      */
68     public String JavaDoc getMessage() {
69         String JavaDoc message = super.getMessage();
70
71         if (message == null) {
72             message = "";
73         }
74
75         if (hexdump != null) {
76             return message + ((message.length() > 0) ? " " : "") + "(Hexdump: "
77                     + hexdump + ')';
78         } else {
79             return message;
80         }
81     }
82
83     /**
84      * Returns the hexdump of the unknown message part.
85      */
86     public String JavaDoc getHexdump() {
87         return hexdump;
88     }
89
90     /**
91      * Sets the hexdump of the unknown message part.
92      */
93     public void setHexdump(String JavaDoc hexdump) {
94         if (this.hexdump != null) {
95             throw new IllegalStateException JavaDoc(
96                     "Hexdump cannot be set more than once.");
97         }
98         this.hexdump = hexdump;
99     }
100 }
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