# Package org.springframework.orm.jpa

Package providing integration of JPA (Java Persistence API) with Spring concepts.

See: Description

Interface Summary
Interface | Description
--- | ---
EntityManagerFactoryInfo | Metadata interface for a Spring-managed JPA `EntityManagerFactory`.
EntityManagerFactoryPlus | Extension of the standard JPA EntityManagerFactory interface, linking in Spring's EntityManagerFactoryPlusOperations interface which defines additional operations (beyond JPA 1.0) in a vendor-independent fashion.
EntityManagerFactoryPlusOperations | Interface that defines common operations beyond the standard JPA EntityManagerFactory interface, in a vendor-independent fashion.
EntityManagerPlus | Extension of the standard JPA EntityManager interface, linking in Spring's EntityManagerPlusOperations interface which defines additional operations (beyond JPA 1.0) in a vendor-independent fashion.
EntityManagerPlusOperations | Interface that defines common operations beyond the standard JPA EntityManager interface, in a vendor-independent fashion.
EntityManagerProxy | Subinterface of `EntityManager` to be implemented by EntityManager proxies.
JpaCallback<T> | Deprecated as of Spring 3.1, in favor of native EntityManager usage (typically obtained through `@PersistenceContext`)
JpaDialect | SPI strategy that encapsulates certain functionality that standard JPA 1.0 does not offer, such as access to the underlying JDBC Connection.
JpaOperations | Deprecated as of Spring 3.1, in favor of native EntityManager usage (typically obtained through `@PersistenceContext`).
JpaVendorAdapter | SPI interface that allows to plug in vendor-specific behavior into Spring's EntityManagerFactory creators.

Class Summary
Class | Description
--- | ---
AbstractEntityManagerFactoryBean | Abstract `FactoryBean` that creates a local JPA `EntityManagerFactory` instance within a Spring application context.
DefaultJpaDialect | Default implementation of the `JpaDialect` interface.
EntityManagerFactoryAccessor | Base class for any class that needs to access an EntityManagerFactory, usually in order to obtain an EntityManager.
EntityManagerFactoryUtils | Helper class featuring methods for JPA EntityManager handling, allowing for reuse of EntityManager instances within transactions.
EntityManagerHolder | Holder wrapping a JPA EntityManager.
ExtendedEntityManagerCreator | Factory for dynamic EntityManager proxies that follow the JPA spec's semantics for "extended" EntityManagers.
JpaAccessor | Deprecated as of Spring 3.1, in favor of native EntityManager usage (typically obtained through `@PersistenceContext`)
JpaInterceptor | Deprecated as of Spring 3.1, in favor of native EntityManager usage (typically obtained through `@PersistenceContext`) and AOP-driven exception translation through `PersistenceExceptionTranslationPostProcessor`
JpaTemplate | Deprecated as of Spring 3.1, in favor of native EntityManager usage (typically obtained through `@PersistenceContext`) Note that this class did not get upgraded to JPA 2.0 and never will.
JpaTransactionManager | `PlatformTransactionManager` implementation for a single JPA `EntityManagerFactory`.
LocalContainerEntityManagerFactoryBean | `FactoryBean` that creates a JPA `EntityManagerFactory` according to JPA's standard container bootstrap contract.
LocalEntityManagerFactoryBean | `FactoryBean` that creates a JPA `EntityManagerFactory` according to JPA's standard standalone bootstrap contract.
SharedEntityManagerCreator | Factory for a shareable JPA `EntityManager` for a given `EntityManagerFactory`.

Exception Summary
Exception | Description
--- | ---
JpaObjectRetrievalFailureException | JPA-specific subclass of ObjectRetrievalFailureException.
JpaOptimisticLockingFailureException | JPA-specific subclass of ObjectOptimisticLockingFailureException.
JpaSystemException | JPA-specific subclass of UncategorizedDataAccessException, for JPA system errors that do not match any concrete `org.springframework.dao` exceptions.

## Package org.springframework.orm.jpa Description

Package providing integration of JPA (Java Persistence API) with Spring concepts. Contains EntityManagerFactory helper classes, a template plus callback for JPA access, and an implementation of Spring's transaction SPI for local JPA transactions.