程序包 org.hibernate.engine.spi

类 EntityKey

java.lang.Object

org.hibernate.engine.spi.EntityKey

所有已实现的接口:

Serializable

public final class EntityKey
extends Object
implements Serializable

Uniquely identifies of an entity instance in a particular Session by identifier. Note that it's only safe to be used within the scope of a Session: it doesn't consider for example the tenantId as part of the equality definition.

Information used to determine uniqueness consists of the entity-name and the identifier value (see equals(java.lang.Object)).

Performance considerations: lots of instances of this type are created at runtime. Make sure each one is as small as possible by storing just the essential needed.

作者:

Gavin King, Sanne Grinovero

另请参阅:

序列化表格

构造器概要

构造器

构造器	说明
EntityKey(Serializable id, EntityPersister persister)	Construct a unique identifier for an entity class instance.

方法概要

修饰符和类型	方法	说明
static EntityKey	deserialize(ObjectInputStream ois, SessionFactoryImplementor sessionFactory)	Custom deserialization routine used during deserialization of a Session/PersistenceContext for increased performance.
boolean	equals(Object other)
String	getEntityName()
Serializable	getIdentifier()
EntityPersister	getPersister()
int	hashCode()
boolean	isBatchLoadable()
void	serialize(ObjectOutputStream oos)	Custom serialization routine used during serialization of a Session/PersistenceContext for increased performance.
String	toString()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

EntityKey

public EntityKey(Serializable id,
                 EntityPersister persister)

Construct a unique identifier for an entity class instance.

NOTE : This signature has changed to accommodate both entity mode and multi-tenancy, both of which relate to the Session to which this key belongs. To help minimize the impact of these changes in the future, the SharedSessionContractImplementor.generateEntityKey(java.io.Serializable, org.hibernate.persister.entity.EntityPersister) method was added to hide the session-specific changes.

参数:

id - The entity id

persister - The entity persister

方法详细资料

isBatchLoadable

public boolean isBatchLoadable()

getIdentifier

public Serializable getIdentifier()

getEntityName

public String getEntityName()

getPersister

public EntityPersister getPersister()

equals

public boolean equals(Object other)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object

serialize

public void serialize(ObjectOutputStream oos)
               throws IOException

Custom serialization routine used during serialization of a Session/PersistenceContext for increased performance.

参数:

oos - The stream to which we should write the serial data.

抛出:

IOException - Thrown by Java I/O

deserialize

public static EntityKey deserialize(ObjectInputStream ois,
                                    SessionFactoryImplementor sessionFactory)
                             throws IOException,
                                    ClassNotFoundException

Custom deserialization routine used during deserialization of a Session/PersistenceContext for increased performance.

参数:

ois - The stream from which to read the entry.

sessionFactory - The SessionFactory owning the Session being deserialized.

返回:

The deserialized EntityEntry

抛出:

IOException - Thrown by Java I/O

ClassNotFoundException - Thrown by Java I/O