UUIDGenerator - JBOSS Portal 2.6 API 英文版文档

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org.jboss.portal.common.util
Class UUIDGenerator

java.lang.Object
  org.jboss.portal.common.util.UUIDGenerator

public class UUIDGenerator
extends java.lang.Object

Adapted from ejb plugin key generated. The implementation of UUID key generator based on the algorithm from Floyd Marinescu's EJB Design Patterns.

Version:: $Revision: 5451 $
Author:: Alex Loubyansky, Julien Viet

Field Summary

private static char[] hexDigits
          Hex digits

private java.lang.String midValue
          cached middle value

private java.security.SecureRandom seeder
          secure random to provide nonrepeating seed

Constructor Summary

UUIDGenerator()


Method Summary

java.lang.String generateKey()


private java.lang.String toHex(int value, int length)
          Converts int value to string hex representation

private static int toInt(byte[] bytes)
          Constructs int value from byte array

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

hexDigits

private static final char[] hexDigits

Hex digits

seeder

private java.security.SecureRandom seeder

secure random to provide nonrepeating seed

midValue

private java.lang.String midValue

cached middle value

Constructor Detail

UUIDGenerator

public UUIDGenerator()

Method Detail

generateKey

public java.lang.String generateKey()

toHex

private java.lang.String toHex(int value,
                               int length)

Converts int value to string hex representation

toInt

private static int toInt(byte[] bytes)

Constructs int value from byte array