org.hibernate.id

Class AbstractUUIDGenerator

java.lang.Object

org.hibernate.id.AbstractUUIDGenerator

All Implemented Interfaces:

IdentifierGenerator

Direct Known Subclasses:

UUIDHexGenerator

public abstract class AbstractUUIDGenerator
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

Field Summary

Fields inherited from interface org.hibernate.id.IdentifierGenerator

ENTITY_NAME, JPA_ENTITY_NAME

Constructor Summary

Constructors

Constructor and Description
AbstractUUIDGenerator()

Method Summary

Modifier and Type	Method and Description
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 org.hibernate.id.IdentifierGenerator

generate

Constructor Detail

AbstractUUIDGenerator

public AbstractUUIDGenerator()

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()