org.compass.core.id
Class UUIDGenerator

java.lang.Object
  org.compass.core.id.UUIDGenerator

All Implemented Interfaces:

IdentifierGenerator

public class UUIDGenerator
extends Object
implements IdentifierGenerator

Author:

kimchy

Constructor Summary

UUIDGenerator()

Method Summary

protected String	format(int intval)
protected String	format(short shortval)
Serializable	generate()
protected short	getCount() Unique in a millisecond for this JVM instance (unless there are > Short.MAX_VALUE instances created in a millisecond)
protected short	getHiTime() Unique down to millisecond
protected int	getIP() Unique in a local network
protected int	getJVM() Unique across JVMs on this machine (unless they load this class in the same quater second - very unlikely)
protected int	getLoTime()

Methods inherited from class java.lang.Object

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

Constructor Detail

UUIDGenerator

public UUIDGenerator()

Method Detail

getJVM

protected int getJVM()

Unique across JVMs on this machine (unless they load this class in the same quater second - very unlikely)

getCount

protected short getCount()

Unique in a millisecond for this JVM instance (unless there are > Short.MAX_VALUE instances created in a millisecond)

getIP

protected int getIP()

Unique in a local network

getHiTime

protected short getHiTime()

Unique down to millisecond

getLoTime

protected int getLoTime()

format

protected String format(int intval)

format

protected String format(short shortval)

generate

public Serializable generate()

Specified by:

generate in interface IdentifierGenerator