Module com.github.f4b6a3.uuid

Package com.github.f4b6a3.uuid.factory.function.impl

Class DefaultClockSeqFunction

java.lang.Object

com.github.f4b6a3.uuid.factory.function.impl.DefaultClockSeqFunction

All Implemented Interfaces:

ClockSeqFunction, LongUnaryOperator

public final class DefaultClockSeqFunction
extends Object
implements ClockSeqFunction

Nested Class Summary

Nested classes/interfaces inherited from interface com.github.f4b6a3.uuid.factory.function.ClockSeqFunction

ClockSeqFunction.ClockSeqPool

Field Summary

Fields

Modifier and Type	Field	Description
protected static ClockSeqFunction.ClockSeqPool	POOL

Constructor Summary

Constructors

Constructor	Description
DefaultClockSeqFunction()

Method Summary

Modifier and Type	Method	Description
long	applyAsLong(long timestamp)	Returns the next value for a clock sequence. ### RFC-4122 - 4.1.5.
int	next()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Field Detail

POOL

protected static final ClockSeqFunction.ClockSeqPool POOL

Constructor Detail

DefaultClockSeqFunction

public DefaultClockSeqFunction()

Method Detail

applyAsLong

public long applyAsLong(long timestamp)

Returns the next value for a clock sequence. ### RFC-4122 - 4.1.5. Clock Sequence (P2) If the clock is set backwards, or might have been set backwards (e.g., while the system was powered off), and the UUID generator can not be sure that no UUIDs were generated with timestamps larger than the value to which the clock was set, then the clock sequence has to be changed. If the previous value of the clock sequence is known, it can just be incremented; otherwise it should be set to a random or high-quality pseudo-random value.

Specified by:

applyAsLong in interface LongUnaryOperator

Parameters:

timestamp - a timestamp

Returns:

a clock sequence

next

public int next()