EntityManagerFactoryAccessor (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.orm.jpa
Class EntityManagerFactoryAccessor

java.lang.Object
  org.springframework.orm.jpa.EntityManagerFactoryAccessor

Direct Known Subclasses:: JpaAccessor, OpenEntityManagerInViewInterceptor, SharedEntityManagerBean

public abstract class EntityManagerFactoryAccessor
extends Object
extends Object

Base class for any class that needs to access an EntityManagerFactory, usually in order to obtain an EntityManager. Defines common properties.

Not intended to be used directly. See JpaAccessor.

Since:: 2.0
Author:: Juergen Hoeller
See Also:: JpaAccessor, EntityManagerFactoryUtils

Field Summary

protected Log logger
          Logger available to subclasses

Constructor Summary

EntityManagerFactoryAccessor()


Method Summary

protected javax.persistence.EntityManager createEntityManager()
          Obtain a new EntityManager from this accessor's EntityManagerFactory.

javax.persistence.EntityManagerFactory getEntityManagerFactory()
          Return the JPA EntityManagerFactory that should be used to create EntityManagers.

Map getJpaPropertyMap()
          Allow Map access to the JPA properties to be passed to the persistence provider, with the option to add or override specific entries.

protected javax.persistence.EntityManager getTransactionalEntityManager()
          Obtain the transactional EntityManager for this accessor's EntityManagerFactory, if any.

void setEntityManagerFactory(javax.persistence.EntityManagerFactory emf)
          Set the JPA EntityManagerFactory that should be used to create EntityManagers.

void setJpaProperties(Properties jpaProperties)
          Specify JPA properties, to be passed into EntityManagerFactory.createEntityManager(Map) (if any).

void setJpaPropertyMap(Map jpaProperties)
          Specify JPA properties as a Map, to be passed into EntityManagerFactory.createEntityManager(Map) (if any).

Methods inherited from class java.lang.Object

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

Field Summary
`protected Log`	`logger` Logger available to subclasses

Constructor Summary
`EntityManagerFactoryAccessor()`

Method Summary
`protected javax.persistence.EntityManager`	`createEntityManager()` Obtain a new EntityManager from this accessor's EntityManagerFactory.
`javax.persistence.EntityManagerFactory`	`getEntityManagerFactory()` Return the JPA EntityManagerFactory that should be used to create EntityManagers.
`Map`	`getJpaPropertyMap()` Allow Map access to the JPA properties to be passed to the persistence provider, with the option to add or override specific entries.
`protected javax.persistence.EntityManager`	`getTransactionalEntityManager()` Obtain the transactional EntityManager for this accessor's EntityManagerFactory, if any.
`void`	`setEntityManagerFactory(javax.persistence.EntityManagerFactory emf)` Set the JPA EntityManagerFactory that should be used to create EntityManagers.
`void`	`setJpaProperties(Properties jpaProperties)` Specify JPA properties, to be passed into `EntityManagerFactory.createEntityManager(Map)` (if any).
`void`	`setJpaPropertyMap(Map jpaProperties)` Specify JPA properties as a Map, to be passed into `EntityManagerFactory.createEntityManager(Map)` (if any).

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

logger

protected final Log logger

Logger available to subclasses

Constructor Detail

EntityManagerFactoryAccessor

public EntityManagerFactoryAccessor()

Method Detail

setEntityManagerFactory

public void setEntityManagerFactory(javax.persistence.EntityManagerFactory emf)

Set the JPA EntityManagerFactory that should be used to create EntityManagers.

See Also:: EntityManagerFactory.createEntityManager(), EntityManagerFactory.createEntityManager(java.util.Map)

getEntityManagerFactory

public javax.persistence.EntityManagerFactory getEntityManagerFactory()

Return the JPA EntityManagerFactory that should be used to create EntityManagers.

setJpaProperties

public void setJpaProperties(Properties jpaProperties)

Specify JPA properties, to be passed into EntityManagerFactory.createEntityManager(Map) (if any).

Can be populated with a String "value" (parsed via PropertiesEditor) or a "props" element in XML bean definitions.

See Also:: EntityManagerFactory.createEntityManager(java.util.Map)

setJpaPropertyMap

public void setJpaPropertyMap(Map jpaProperties)

Specify JPA properties as a Map, to be passed into EntityManagerFactory.createEntityManager(Map) (if any).

Can be populated with a "map" or "props" element in XML bean definitions.

See Also:: EntityManagerFactory.createEntityManager(java.util.Map)

getJpaPropertyMap

public Map getJpaPropertyMap()

Allow Map access to the JPA properties to be passed to the persistence provider, with the option to add or override specific entries.

Useful for specifying entries directly, for example via "jpaPropertyMap[myKey]".

createEntityManager

protected javax.persistence.EntityManager createEntityManager()
                                                       throws IllegalStateException

Obtain a new EntityManager from this accessor's EntityManagerFactory.

Can be overridden in subclasses to create specific EntityManager variants.

Returns:: a new EntityManager
Throws:: IllegalStateException - if this accessor is not configured with an EntityManagerFactory
See Also:: EntityManagerFactory.createEntityManager(), EntityManagerFactory.createEntityManager(java.util.Map)

getTransactionalEntityManager

protected javax.persistence.EntityManager getTransactionalEntityManager()
                                                                 throws IllegalStateException

Obtain the transactional EntityManager for this accessor's EntityManagerFactory, if any.

Returns:: the transactional EntityManager, or null if none
Throws:: IllegalStateException - if this accessor is not configured with an EntityManagerFactory
See Also:: EntityManagerFactoryUtils.getTransactionalEntityManager(javax.persistence.EntityManagerFactory), EntityManagerFactoryUtils.getTransactionalEntityManager(javax.persistence.EntityManagerFactory, java.util.Map)