UUIDGenerator (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

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net.sf.hibernate.id
Class UUIDGenerator

java.lang.Object
  net.sf.hibernate.id.UUIDGenerator

All Implemented Interfaces:: IdentifierGenerator

Direct Known Subclasses:: UUIDHexGenerator, UUIDStringGenerator

public abstract class UUIDGenerator
extends Object
implements IdentifierGenerator

The base class for identifier generators that use a UUID algorithm. This class implements the algorithm, subclasses define the identifier format.

Author:: Gavin King
See Also:: UUIDHexGenerator, UUIDStringGenerator

Constructor Summary

UUIDGenerator()


Method Summary

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

Methods inherited from interface net.sf.hibernate.id.IdentifierGenerator

generate

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()