org.aooshi.j

类 Snowflake

java.lang.Object

org.aooshi.j.Snowflake

直接已知子类:

SnowflakeYear

public class Snowflake
extends Object

雪花算法

构造器概要

构造器

构造器和说明
Snowflake() initialize default
Snowflake(long workerId, long datacenterId)

方法概要

限定符和类型	方法和说明
Snowflake	epochYear(int year) set epoch
protected static long	getDatacenterId(long maxDatacenterId) 数据标识id部分
protected static long	getMaxWorkerId(long datacenterId, long maxWorkerId) 获取 maxWorkerId
Snowflake	initEpoch(long epoch) init epoch
long	nextId() generate new id
protected long	nextId(long twepoch) generate new id
protected long	tilNextMillis(long lastTimestamp)
protected long	timeGen()

从类继承的方法 java.lang.Object

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

构造器详细资料

Snowflake

public Snowflake()

initialize default

Snowflake

public Snowflake(long workerId,
                 long datacenterId)

参数:

workerId - machine ID,1-32

datacenterId - datacenter ID,1-32

方法详细资料

getMaxWorkerId

protected static long getMaxWorkerId(long datacenterId,
                                     long maxWorkerId)

获取 maxWorkerId

getDatacenterId

protected static long getDatacenterId(long maxDatacenterId)

数据标识id部分

nextId

public long nextId()

generate new id

返回:

nextId

protected long nextId(long twepoch)

generate new id

参数:

twepoch -

返回:

tilNextMillis

protected long tilNextMillis(long lastTimestamp)

initEpoch

public Snowflake initEpoch(long epoch)

init epoch

参数:

epoch -

epochYear

public Snowflake epochYear(int year)

set epoch

参数:

year -

timeGen

protected long timeGen()