org.hiylo.components.sequence

Class AbstractSequence

java.lang.Object

org.hiylo.components.sequence.AbstractSequence

Direct Known Subclasses:

DistributedSequence, SingletonSequence

public abstract class AbstractSequence
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected long	lastTimestamp 上次生成ID的时间截

Constructor Summary

Constructors

Constructor and Description
AbstractSequence()

Method Summary

Modifier and Type	Method and Description
protected boolean	checkLastTimestamp(long timestamp)
abstract long	nextId() 获取一个long类型的id
abstract String	nextIdString() 获取一个String类型的id
protected long	tilNextMillis(long lastTimestamp) 阻塞到下一个毫秒，直到获得新的时间戳
protected long	timeGen() 返回以毫秒为单位的当前时间

Methods inherited from class java.lang.Object

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

Field Detail

lastTimestamp

protected long lastTimestamp

上次生成ID的时间截

Constructor Detail

AbstractSequence

public AbstractSequence()

Method Detail

nextIdString

public abstract String nextIdString()

获取一个String类型的id

Returns:

id

nextId

public abstract long nextId()

获取一个long类型的id

Returns:

id

checkLastTimestamp

protected boolean checkLastTimestamp(long timestamp)

tilNextMillis

protected long tilNextMillis(long lastTimestamp)

阻塞到下一个毫秒，直到获得新的时间戳

Parameters:

lastTimestamp - 上次生成ID的时间截

Returns:

当前时间戳

timeGen

protected long timeGen()

返回以毫秒为单位的当前时间

Returns:

当前时间(毫秒)