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

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org.springframework.orm.jpa.persistenceunit
Interface PersistenceUnitManager

All Known Implementing Classes:: DefaultPersistenceUnitManager

public interface PersistenceUnitManager

Interface that defines an abstraction for finding and managing JPA PersistenceUnitInfos. Used by LocalContainerEntityManagerFactoryBean in order to obtain a PersistenceUnitInfo for building a concrete EntityManagerFactory.

Obtaining a PersistenceUnitInfo instance is an exclusive process. A PersistenceUnitInfo instance is not available for further calls anymore once it has been obtained.

Since:: 2.0
Author:: Juergen Hoeller
See Also:: DefaultPersistenceUnitManager, LocalContainerEntityManagerFactoryBean.setPersistenceUnitManager(org.springframework.orm.jpa.persistenceunit.PersistenceUnitManager)

Method Summary

javax.persistence.spi.PersistenceUnitInfo obtainDefaultPersistenceUnitInfo()
Obtain the default PersistenceUnitInfo from this manager.

javax.persistence.spi.PersistenceUnitInfo obtainPersistenceUnitInfo(String persistenceUnitName)
Obtain the specified PersistenceUnitInfo from this manager.

Method Summary
`javax.persistence.spi.PersistenceUnitInfo`	`obtainDefaultPersistenceUnitInfo()` Obtain the default PersistenceUnitInfo from this manager.
`javax.persistence.spi.PersistenceUnitInfo`	`obtainPersistenceUnitInfo(String persistenceUnitName)` Obtain the specified PersistenceUnitInfo from this manager.

Method Detail

obtainDefaultPersistenceUnitInfo

javax.persistence.spi.PersistenceUnitInfo obtainDefaultPersistenceUnitInfo()
                                                                           throws IllegalStateException

Obtain the default PersistenceUnitInfo from this manager.

Returns:: the PersistenceUnitInfo (never null)
Throws:: IllegalStateException - if there is no default PersistenceUnitInfo defined or it has already been obtained

obtainPersistenceUnitInfo

javax.persistence.spi.PersistenceUnitInfo obtainPersistenceUnitInfo(String persistenceUnitName)
                                                                    throws IllegalArgumentException,
                                                                           IllegalStateException

Obtain the specified PersistenceUnitInfo from this manager.

Parameters:: persistenceUnitName - the name of the desired persistence unit
Returns:: the PersistenceUnitInfo (never null)
Throws:: IllegalArgumentException - if no PersistenceUnitInfo with the given name is defined; IllegalStateException - if the PersistenceUnitInfo with the given name has already been obtained