| HandleGeneratorImpl.java |
1 /*
2 * Copyright 2000-2001,2004 The Apache Software Foundation.
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 /*
18
19 */
20
21 package org.apache.wsrp4j.util;
22
23 import java.net.InetAddress;
24 import java.util.Random;
25
26 /**
27 * This class implements the HandleGenerator interface.
28 *
29 * @author Stephan Laertz
30 *
31 * @version 1.1
32 *
33 * @see HandleGenerator
34 *
35 */
36 public class HandleGeneratorImpl implements HandleGenerator {
37
38 private static int counter = 0;
39
40 /**
41 * Private constructor of HandleGeneratorImpl.
42 */
43 private HandleGeneratorImpl() {
44 }
45
46 /**
47 * Returns an instance of HandleGeneratorImpl.
48 *
49 * @return String representing the new handle.
50 */
51 public static HandleGeneratorImpl create() {
52 return new HandleGeneratorImpl();
53 }
54
55 /**
56 * Generates a new handle and returns it as a String.
57 *
58 * @return String representing the new handle.
59 */
60 synchronized public String generateHandle() {
61
62 String host = null;
63 try {
64
65 host = InetAddress.getLocalHost().getHostAddress().toString();
66
67 }
68 catch (Exception e) {
69
70 host = Double.toString(new Random(new Random().nextLong())
71 .nextDouble());
72
73 }
74
75 StringBuffer handle = new StringBuffer(host);
76 handle.append("_");
77 handle.append(String.valueOf(System.currentTimeMillis()));
78 handle.append("_");
79 handle.append(Integer.toString(counter++));
80
81 return handle.toString();
82 }
83
84 }