com.lc.lang

Class ObjectId

java.lang.Object

com.lc.lang.ObjectId

public class ObjectId
extends Object

MongoDB ID生成策略实现

ObjectId由以下几部分组成：

 1. Time 时间戳。
 2. Machine 所在主机的唯一标识符，一般是机器主机名的散列值。
 3. PID 进程ID。确保同一机器中不冲突
 4. INC 自增计数器。确保同一秒内产生objectId的唯一性。
 

参考：http://blog.csdn.net/qxc1281/article/details/54021882

Since:

0.1

Author:

LC

Constructor Summary

Constructors

Constructor and Description
ObjectId()

Method Summary

Modifier and Type	Method and Description
static String	next() 获取一个objectId用下划线分割
static String	next(boolean withHyphen) 获取一个objectId
static byte[]	nextBytes() 获取一个objectId的bytes表现形式

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectId

public ObjectId()

Method Detail

nextBytes

public static byte[] nextBytes()

获取一个objectId的bytes表现形式

Returns:

objectId

Since:

4.1.15

next

public static String next(boolean withHyphen)

获取一个objectId

Parameters:

withHyphen - 是否包含分隔符

Returns:

objectId

next

public static String next()

获取一个objectId用下划线分割

Returns:

objectId