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## org.springframework.orm.jpa
Interface JpaVendorAdapter

All Known Implementing Classes:
  AbstractJpaVendorAdapter, EclipseLinkJpaVendorAdapter, HibernateJpaVendorAdapter, OpenJpaVendorAdapter, TopLinkJpaVendorAdapter

    public interface JpaVendorAdapter

SPI interface that allows to plug in vendor-specific behavior into Spring's EntityManagerFactory creators. Serves as single configuration point for all vendor-specific properties.

Since:
  2.0
Author:
  Juergen Hoeller, Rod Johnson
See Also:
  `AbstractEntityManagerFactoryBean.setJpaVendorAdapter(org.springframework.orm.jpa.JpaVendorAdapter)`

Method Summary
`Class<? extends EntityManagerFactory>` | `getEntityManagerFactoryInterface()` Return the vendor-specific EntityManagerFactory interface that the EntityManagerFactory proxy is supposed to implement.
`Class<? extends EntityManager>` | `getEntityManagerInterface()` Return the vendor-specific EntityManager interface that this provider's EntityManagers will implement.
`JpaDialect` | `getJpaDialect()` Return the vendor-specific JpaDialect implementation for this provider, or `null` if there is none.
`Map<String,?>` | `getJpaPropertyMap()` Return a Map of vendor-specific JPA properties, typically based on settings in this JpaVendorAdapter instance.
`PersistenceProvider` | `getPersistenceProvider()` Return the vendor-specific persistence provider.
`String` | `getPersistenceProviderRootPackage()` Return the name of the persistence provider's root package (e.g.
`void` | `postProcessEntityManagerFactory(EntityManagerFactory emf)` Optional callback for post-processing the native EntityManagerFactory before active use.

Method Detail

### getPersistenceProvider

    PersistenceProvider getPersistenceProvider()

  Return the vendor-specific persistence provider.

### getPersistenceProviderRootPackage

    String getPersistenceProviderRootPackage()

  Return the name of the persistence provider's root package (e.g. "oracle.toplink.essentials"). Will be used for excluding provider classes from temporary class overriding.

  Since:
    2.5.2

### getJpaPropertyMap

    Map<String,?> getJpaPropertyMap()

  Return a Map of vendor-specific JPA properties, typically based on settings in this JpaVendorAdapter instance.

  Note that there might be further JPA properties defined on the EntityManagerFactory bean, which might potentially override individual JPA property values specified here.

  Returns:
    a Map of JPA properties, as as accepted by the standard JPA bootstrap facilities, or `null` or an empty Map if there are no such properties to expose
  See Also:
    `Persistence.createEntityManagerFactory(String, java.util.Map)`, `PersistenceProvider.createContainerEntityManagerFactory(javax.persistence.spi.PersistenceUnitInfo, java.util.Map)`

### getJpaDialect

    JpaDialect getJpaDialect()

  Return the vendor-specific JpaDialect implementation for this provider, or `null` if there is none.

### getEntityManagerFactoryInterface

    Class<? extends EntityManagerFactory> getEntityManagerFactoryInterface()

  Return the vendor-specific EntityManagerFactory interface that the EntityManagerFactory proxy is supposed to implement.

  If the provider does not offer any EntityManagerFactory extensions, the adapter should simply return the standard `EntityManagerFactory` class here.

  Since:
    2.5.2

### getEntityManagerInterface

    Class<? extends EntityManager> getEntityManagerInterface()

  Return the vendor-specific EntityManager interface that this provider's EntityManagers will implement.

  If the provider does not offer any EntityManager extensions, the adapter should simply return the standard `EntityManager` class here.

### postProcessEntityManagerFactory

    void postProcessEntityManagerFactory(EntityManagerFactory emf)

  Optional callback for post-processing the native EntityManagerFactory before active use.

  This can be used for triggering vendor-specific initialization processes. While this is not expected to be used for most providers, it is included here as a general extension hook.

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