程序包 org.hibernate.id

类 UUIDGenerator

java.lang.Object

org.hibernate.id.UUIDGenerator

所有已实现的接口:

Configurable, IdentifierGenerator

public class UUIDGenerator
extends Object
implements IdentifierGenerator, Configurable

An IdentifierGenerator which generates UUID values using a pluggable generation strategy. The values this generator can return include UUID, String and byte[16]

Supports 2 config parameters:

• UUID_GEN_STRATEGY - names the UUIDGenerationStrategy instance to use
• UUID_GEN_STRATEGY_CLASS - names the UUIDGenerationStrategy class to use

Currently there are 2 standard implementations of UUIDGenerationStrategy:

• StandardRandomStrategy (the default, if none specified)
• CustomVersionOneStrategy

作者:

Steve Ebersole

字段概要

字段

修饰符和类型	字段	说明
static String	UUID_GEN_STRATEGY
static String	UUID_GEN_STRATEGY_CLASS

从接口继承的字段 org.hibernate.id.IdentifierGenerator

ENTITY_NAME, GENERATOR_NAME, JPA_ENTITY_NAME

构造器概要

构造器

构造器	说明
UUIDGenerator()

方法概要

修饰符和类型	方法	说明
static UUIDGenerator	buildSessionFactoryUniqueIdentifierGenerator()
void	configure(Type type, Properties params, ServiceRegistry serviceRegistry)	Configure this instance, given the value of parameters specified by the user as <param> elements.
Serializable	generate(SharedSessionContractImplementor session, Object object)	Generate a new identifier.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.hibernate.id.IdentifierGenerator

supportsJdbcBatchInserts

字段详细资料

UUID_GEN_STRATEGY

public static final String UUID_GEN_STRATEGY

另请参阅:

常量字段值

UUID_GEN_STRATEGY_CLASS

public static final String UUID_GEN_STRATEGY_CLASS

另请参阅:

常量字段值

构造器详细资料

UUIDGenerator

public UUIDGenerator()

方法详细资料

buildSessionFactoryUniqueIdentifierGenerator

public static UUIDGenerator buildSessionFactoryUniqueIdentifierGenerator()

configure

public void configure(Type type,
                      Properties params,
                      ServiceRegistry serviceRegistry)
               throws MappingException

从接口复制的说明: Configurable

Configure this instance, given the value of parameters specified by the user as <param> elements. This method is called just once, following instantiation.

指定者:

configure 在接口中 Configurable

参数:

type - The id property type descriptor

params - param values, keyed by parameter name

serviceRegistry - Access to service that may be needed.

抛出:

MappingException

generate

public Serializable generate(SharedSessionContractImplementor session,
                             Object object)
                      throws HibernateException

从接口复制的说明: IdentifierGenerator

Generate a new identifier.

指定者:

generate 在接口中 IdentifierGenerator

参数:

session - The session from which the request originates

object - the entity or collection (idbag) for which the id is being generated

返回:

a new identifier

抛出:

HibernateException - Indicates trouble generating the identifier