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1 package com.espada.bugtracker.util;
2
3 import java.io.PrintStream  ;
4 import java.util.Random ;
5
6 public class GenerateUniqueId
7 {
8
9 public static synchronized String getIdentifier()
10 {
11 StringBuffer stringbuffer = new StringBuffer ();
12 long l = randomSource.nextLong();
13 if(l < 0L)
14 l = -l;
15 l %= 0x81bf1000L;
16 l += 0x81bf1000L;
17 stringbuffer.append(Long.toString(l, 36).substring(1));
18 long l1 = System.currentTimeMillis() / 2000L;
19 l1 %= 46656L;
20 l1 += 46656L;
21 stringbuffer.append(Long.toString(l1, 36).substring(1));
22 if(lastTimeVal != l1)
23 {
24 lastTimeVal = l1;
25 session_count = 0;
26 }
27 stringbuffer.append(Long.toString(++session_count, 36));
28 return stringbuffer.toString();
29 }
30
31 public synchronized String getIdentifier(String s)
32 {
33 if(s != null && s.length() > 0)
34 return getIdentifier() + "." + s;
35 else
36 return getIdentifier();
37 }
38
39 public static void main(String args[])
40 {
41 System.out.println(getIdentifier());
42 System.out.println(getIdentifier());
43 System.out.println(getIdentifier());
44 System.out.println(getIdentifier());
45 }
46
47 public GenerateUniqueId()
48 {
49 }
50
51 private static int session_count = 0;
52 private static long lastTimeVal = 0L;
53 private static Random randomSource = new Random ();
54 public static final long maxRandomLen = 0x81bf1000L;
55 public static final long maxSessionLifespanTics = 46656L;
56 public static final long ticDifference = 2000L;
57
58 }
59 |
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