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
21 package org.apache.directory.server.dhcp.options;
22
23
24 import java.io.UnsupportedEncodingException;
25
26
27 /**
28 * The Dynamic Host Configuration Protocol (DHCP) provides a framework for
29 * passing configuration information to hosts on a TCP/IP network. Configuration
30 * parameters and other control information are carried in tagged data items
31 * that are stored in the 'options' field of the DHCP message. The data items
32 * themselves are also called "options."
33 *
34 * This abstract base class is for options
35 * that carry a string.
36 *
37 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
38 * @version $Rev: 551805 $, $Date: 2007-06-29 00:57:04 -0500 (Fr, 29 Jun 2007) $
39 */
40 public abstract class StringOption extends DhcpOption
41 {
42 private String string;
43
44
45 /*
46 * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[])
47 */
48 public void setData( byte[] data )
49 {
50 try
51 {
52 string = new String( data, "ASCII" );
53 }
54 catch ( UnsupportedEncodingException e )
55 {
56 // should not happen
57 throw new RuntimeException( "ASCII encoding unavailable" );
58 }
59 }
60
61
62 /*
63 * @see org.apache.directory.server.dhcp.options.DhcpOption#getData()
64 */
65 public byte[] getData()
66 {
67 if ( null == string )
68 return new byte[]
69 {};
70
71 try
72 {
73 return string.getBytes( "ASCII" );
74 }
75 catch ( UnsupportedEncodingException e )
76 {
77 // should not happen
78 throw new RuntimeException( "ASCII encoding unavailable" );
79 }
80 }
81
82
83 public String getString()
84 {
85 return string;
86 }
87
88
89 public void setString( String string )
90 {
91 this.string = string;
92 }
93 }