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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   *
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.transport.vmpipe;
21  
22  import java.net.SocketAddress;
23  
24  /**
25   * A {@link SocketAddress} which represents in-VM pipe port number.
26   *
27   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
28   */
29  public class VmPipeAddress extends SocketAddress implements Comparable<VmPipeAddress> {
30      private static final long serialVersionUID = 3257844376976830515L;
31  
32      private final int port;
33  
34      /**
35       * Creates a new instance with the specifid port number.
36       * 
37       * @param port the port to use
38       */
39      public VmPipeAddress(int port) {
40          this.port = port;
41      }
42  
43      /**
44       * @return the port number.
45       */
46      public int getPort() {
47          return port;
48      }
49  
50      /**
51       * {@inheritDoc}
52       */
53      @Override
54      public int hashCode() {
55          return port;
56      }
57  
58      /**
59       * {@inheritDoc}
60       */
61      @Override
62      public boolean equals(Object o) {
63          if (this == o) {
64              return true;
65          }
66  
67          if (o instanceof VmPipeAddress) {
68              VmPipeAddress that = (VmPipeAddress) o;
69              return this.port == that.port;
70          }
71  
72          return false;
73      }
74  
75      /**
76       * {@inheritDoc}
77       */
78      public int compareTo(VmPipeAddress o) {
79          return this.port - o.port;
80      }
81  
82      /**
83       * {@inheritDoc}
84       */
85      @Override
86      public String toString() {
87          if (port >= 0) {
88              return "vm:server:" + port;
89          }
90  
91          return "vm:client:" + -port;
92      }
93  }