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1   /*
2    * Copyright  2004-2005 Stefan Reuter
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 net.sf.asterisk;
18  
19  import java.io.Serializable;
20  
21  /***
22   * Represents the version of an Asterisk server.
23   * 
24   * @since 0.2
25   * @author srt
26   * @version $Id: AsteriskVersion.java,v 1.1 2005/10/29 12:00:11 srt Exp $
27   */
28  public class AsteriskVersion implements Comparable, Serializable
29  {
30      private int version;
31      private String versionString;
32  
33      /***
34       * Represents the Asterisk 1.0 series.
35       */
36      public static final AsteriskVersion ASTERISK_1_0 = new AsteriskVersion(100,
37              "Asterisk 1.0");
38  
39      /***
40       * Represents the Asterisk 1.2 series.
41       */
42      public static final AsteriskVersion ASTERISK_1_2 = new AsteriskVersion(120,
43              "Asterisk 1.2");
44  
45      /***
46       * Serial version identifier.
47       */
48      private static final long serialVersionUID = -5696160640576385797L;
49  
50      private AsteriskVersion(int version, String versionString)
51      {
52          this.version = version;
53          this.versionString = versionString;
54      }
55  
56      /***
57       * Returns <code>true</code> if this version is equal to or higher than
58       * the given version.
59       * 
60       * @param o the version to compare to
61       * @return <code>true</code> if this version is equal to or higher than
62       *         the given version.
63       */
64      public boolean isAtLeast(AsteriskVersion o)
65      {
66          if (version >= o.version)
67          {
68              return true;
69          }
70          else
71          {
72              return false;
73          }
74      }
75  
76      public int compareTo(Object o)
77      {
78          int otherVersion;
79  
80          otherVersion = ((AsteriskVersion) o).version;
81          if (version < otherVersion)
82          {
83              return -1;
84          }
85          else if (version > otherVersion)
86          {
87              return 1;
88          }
89          else
90          {
91              return 0;
92          }
93      }
94  
95      public String toString()
96      {
97          return versionString;
98      }
99  }