org.springframework.orm.jpa
Class AbstractEntityManagerFactoryBean

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

All Implemented Interfaces:

DisposableBean, FactoryBean, InitializingBean, PersistenceExceptionTranslator, EntityManagerFactoryInfo

Direct Known Subclasses:

LocalContainerEntityManagerFactoryBean, LocalEntityManagerFactoryBean

public abstract class AbstractEntityManagerFactoryBean
extends Object
implements FactoryBean, InitializingBean, DisposableBean, EntityManagerFactoryInfo, PersistenceExceptionTranslator

Abstract FactoryBean that creates a local JPA EntityManagerFactory instance within a Spring application context.

Encapsulates the common functionality between the different JPA bootstrap contracts (standalone as well as container).

Implements support for standard JPA configuration as well as Spring's JpaVendorAdapter abstraction, and controls the EntityManagerFactory's lifecycle.

This class also implements the PersistenceExceptionTranslator interface, as autodetected by Spring's PersistenceExceptionTranslationPostProcessor, for AOP-based translation of native exceptions to Spring DataAccessExceptions. Hence, the presence of e.g. LocalEntityManagerFactoryBean automatically enables a PersistenceExceptionTranslationPostProcessor to translate JPA exceptions.

Since:

2.0

Author:

Juergen Hoeller, Rod Johnson

See Also:

LocalEntityManagerFactoryBean, LocalContainerEntityManagerFactoryBean

Field Summary

protected Log	logger Logger available to subclasses
javax.persistence.EntityManagerFactory	nativeEntityManagerFactory Raw EntityManagerFactory as returned by the PersistenceProvider

Constructor Summary

AbstractEntityManagerFactoryBean()

Method Summary

void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected javax.persistence.EntityManagerFactory	createEntityManagerFactoryProxy(javax.persistence.EntityManagerFactory emf) Create a proxy of the given EntityManagerFactory.
protected abstract javax.persistence.EntityManagerFactory	createNativeEntityManagerFactory() Subclasses must implement this method to create the EntityManagerFactory that will be returned by the getObject() method
void	destroy() Close the EntityManagerFactory on bean factory shutdown.
DataSource	getDataSource() Return the JDBC DataSource that this EntityManagerFactory obtains its JDBC Connections from.
Class<? extends javax.persistence.EntityManager>	getEntityManagerInterface() Return the (potentially vendor-specific) EntityManager interface that this factory's EntityManagers will implement.
JpaDialect	getJpaDialect() Return the vendor-specific JpaDialect implementation for this EntityManagerFactory, or null if not known.
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.
javax.persistence.EntityManagerFactory	getNativeEntityManagerFactory() Return the raw underlying EntityManagerFactory.
javax.persistence.EntityManagerFactory	getObject() Return the singleton EntityManagerFactory.
Class	getObjectType() Return the type of object that this FactoryBean creates, or null if not known in advance.
javax.persistence.spi.PersistenceProvider	getPersistenceProvider() Return the underlying PersistenceProvider that the underlying EntityManagerFactory was created with.
javax.persistence.spi.PersistenceUnitInfo	getPersistenceUnitInfo() Return the PersistenceUnitInfo used to create this EntityManagerFactory, if the in-container API was used.
String	getPersistenceUnitName() Return the name of the persistence unit used to create this EntityManagerFactory, or null if it is an unnamed default.
boolean	isSingleton() Is the object managed by this factory a singleton?
void	setEntityManagerInterface(Class<? extends javax.persistence.EntityManager> entityManagerInterface) Specify the (potentially vendor-specific) EntityManager interface that this factory's EntityManagers are supposed to implement.
void	setJpaDialect(JpaDialect jpaDialect) Specify the vendor-specific JpaDialect implementation to associate with this EntityManagerFactory.
void	setJpaProperties(Properties jpaProperties) Specify JPA properties, to be passed into Persistence.createEntityManagerFactory (if any).
void	setJpaPropertyMap(Map jpaProperties) Specify JPA properties as a Map, to be passed into Persistence.createEntityManagerFactory (if any).
void	setJpaVendorAdapter(JpaVendorAdapter jpaVendorAdapter) Specify the JpaVendorAdapter implementation for the desired JPA provider, if any.
void	setPersistenceProvider(javax.persistence.spi.PersistenceProvider persistenceProvider) Set the PersistenceProvider instance to use for creating the EntityManagerFactory.
void	setPersistenceProviderClass(Class<? extends javax.persistence.spi.PersistenceProvider> persistenceProviderClass) Set the PersistenceProvider implementation class to use for creating the EntityManagerFactory.
void	setPersistenceUnitName(String persistenceUnitName) Specify the name of the EntityManagerFactory configuration.
DataAccessException	translateExceptionIfPossible(RuntimeException ex) Implementation of the PersistenceExceptionTranslator interface, as autodetected by Spring's PersistenceExceptionTranslationPostProcessor.

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

nativeEntityManagerFactory

public javax.persistence.EntityManagerFactory nativeEntityManagerFactory

Raw EntityManagerFactory as returned by the PersistenceProvider

Constructor Detail

AbstractEntityManagerFactoryBean

public AbstractEntityManagerFactoryBean()

Method Detail

setPersistenceProviderClass

public void setPersistenceProviderClass(Class<? extends javax.persistence.spi.PersistenceProvider> persistenceProviderClass)

Set the PersistenceProvider implementation class to use for creating the EntityManagerFactory. If not specified, the persistence provider will be taken from the JpaVendorAdapter (if any) or retrieved through scanning (as far as possible).

See Also:

JpaVendorAdapter.getPersistenceProvider(), PersistenceProvider, Persistence

setPersistenceProvider

public void setPersistenceProvider(javax.persistence.spi.PersistenceProvider persistenceProvider)

Set the PersistenceProvider instance to use for creating the EntityManagerFactory. If not specified, the persistence provider will be taken from the JpaVendorAdapter (if any) or determined by the persistence unit deployment descriptor (as far as possible).

See Also:

JpaVendorAdapter.getPersistenceProvider(), PersistenceProvider, Persistence

getPersistenceProvider

public javax.persistence.spi.PersistenceProvider getPersistenceProvider()

Description copied from interface: EntityManagerFactoryInfo

Return the underlying PersistenceProvider that the underlying EntityManagerFactory was created with.

Specified by:

getPersistenceProvider in interface EntityManagerFactoryInfo

Returns:

the PersistenceProvider used to create this EntityManagerFactory, or null if the standard JPA provider autodetection process was used to configure the EntityManagerFactory

setPersistenceUnitName

public void setPersistenceUnitName(String persistenceUnitName)

Specify the name of the EntityManagerFactory configuration.

Default is none, indicating the default EntityManagerFactory configuration. The persistence provider will throw an exception if ambiguous EntityManager configurations are found.

See Also:

Persistence.createEntityManagerFactory(String)

getPersistenceUnitName

public String getPersistenceUnitName()

Description copied from interface: EntityManagerFactoryInfo

Return the name of the persistence unit used to create this EntityManagerFactory, or null if it is an unnamed default. If getPersistenceUnitInfo() returns non-null, the return type of getPersistenceUnitName() must be equal to the value returned by PersistenceUnitInfo.getPersistenceUnitName().

Specified by:

getPersistenceUnitName in interface EntityManagerFactoryInfo

See Also:

EntityManagerFactoryInfo.getPersistenceUnitInfo(), PersistenceUnitInfo.getPersistenceUnitName()

setJpaProperties

public void setJpaProperties(Properties jpaProperties)

Specify JPA properties, to be passed into Persistence.createEntityManagerFactory (if any).

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

See Also:

Persistence.createEntityManagerFactory(String, java.util.Map), PersistenceProvider.createContainerEntityManagerFactory(javax.persistence.spi.PersistenceUnitInfo, java.util.Map)

setJpaPropertyMap

public void setJpaPropertyMap(Map jpaProperties)

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

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

See Also:

Persistence.createEntityManagerFactory(String, java.util.Map), PersistenceProvider.createContainerEntityManagerFactory(javax.persistence.spi.PersistenceUnitInfo, 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]".

setEntityManagerInterface

public void setEntityManagerInterface(Class<? extends javax.persistence.EntityManager> entityManagerInterface)

Specify the (potentially vendor-specific) EntityManager interface that this factory's EntityManagers are supposed to implement.

The default will be taken from the specific JpaVendorAdapter, if any, or set to the standard javax.persistence.EntityManager interface else.

See Also:

JpaVendorAdapter.getEntityManagerInterface(), EntityManagerFactoryInfo.getEntityManagerInterface()

getEntityManagerInterface

public Class<? extends javax.persistence.EntityManager> getEntityManagerInterface()

Description copied from interface: EntityManagerFactoryInfo

Return the (potentially vendor-specific) EntityManager interface that this factory's EntityManagers will implement.

Specified by:

getEntityManagerInterface in interface EntityManagerFactoryInfo

setJpaDialect

public void setJpaDialect(JpaDialect jpaDialect)

Specify the vendor-specific JpaDialect implementation to associate with this EntityManagerFactory. This will be exposed through the EntityManagerFactoryInfo interface, to be picked up as default dialect by accessors that intend to use JpaDialect functionality.

See Also:

EntityManagerFactoryInfo.getJpaDialect()

getJpaDialect

public JpaDialect getJpaDialect()

Description copied from interface: EntityManagerFactoryInfo

Return the vendor-specific JpaDialect implementation for this EntityManagerFactory, or null if not known.

Specified by:

getJpaDialect in interface EntityManagerFactoryInfo

setJpaVendorAdapter

public void setJpaVendorAdapter(JpaVendorAdapter jpaVendorAdapter)

Specify the JpaVendorAdapter implementation for the desired JPA provider, if any. This will initialize appropriate defaults for the given provider, such as persistence provider class and JpaDialect, unless locally overridden in this FactoryBean.

afterPropertiesSet

public final void afterPropertiesSet()
                              throws javax.persistence.PersistenceException

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

javax.persistence.PersistenceException

createEntityManagerFactoryProxy

protected javax.persistence.EntityManagerFactory createEntityManagerFactoryProxy(javax.persistence.EntityManagerFactory emf)

Create a proxy of the given EntityManagerFactory. We do this to be able to return transaction-aware proxies for application-managed EntityManagers, and to introduce the NamedEntityManagerFactory interface

Parameters:

emf - EntityManagerFactory as returned by the persistence provider

Returns:

proxy entity manager

createNativeEntityManagerFactory

protected abstract javax.persistence.EntityManagerFactory createNativeEntityManagerFactory()
                                                                                    throws javax.persistence.PersistenceException

Subclasses must implement this method to create the EntityManagerFactory that will be returned by the getObject() method

Returns:

EntityManagerFactory instance returned by this FactoryBean

Throws:

javax.persistence.PersistenceException - if the EntityManager cannot be created

translateExceptionIfPossible

public DataAccessException translateExceptionIfPossible(RuntimeException ex)

Implementation of the PersistenceExceptionTranslator interface, as autodetected by Spring's PersistenceExceptionTranslationPostProcessor.

Uses the dialect's conversion if possible; otherwise falls back to standard JPA exception conversion.

Specified by:

translateExceptionIfPossible in interface PersistenceExceptionTranslator

Parameters:

ex - a RuntimeException thrown

Returns:

the corresponding DataAccessException (or null if the exception could not be translated, as in this case it may result from user code rather than an actual persistence problem)

See Also:

PersistenceExceptionTranslationPostProcessor, PersistenceExceptionTranslator.translateExceptionIfPossible(java.lang.RuntimeException), EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(java.lang.RuntimeException)

getNativeEntityManagerFactory

public javax.persistence.EntityManagerFactory getNativeEntityManagerFactory()

Description copied from interface: EntityManagerFactoryInfo

Return the raw underlying EntityManagerFactory.

Specified by:

getNativeEntityManagerFactory in interface EntityManagerFactoryInfo

Returns:

the unadorned EntityManagerFactory (never null)

getPersistenceUnitInfo

public javax.persistence.spi.PersistenceUnitInfo getPersistenceUnitInfo()

Description copied from interface: EntityManagerFactoryInfo

Return the PersistenceUnitInfo used to create this EntityManagerFactory, if the in-container API was used.

Specified by:

getPersistenceUnitInfo in interface EntityManagerFactoryInfo

Returns:

the PersistenceUnitInfo used to create this EntityManagerFactory, or null if the in-container contract was not used to configure the EntityManagerFactory

getDataSource

public DataSource getDataSource()

Description copied from interface: EntityManagerFactoryInfo

Return the JDBC DataSource that this EntityManagerFactory obtains its JDBC Connections from.

Specified by:

getDataSource in interface EntityManagerFactoryInfo

Returns:

the JDBC DataSource, or null if not known

getObject

public javax.persistence.EntityManagerFactory getObject()

Return the singleton EntityManagerFactory.

Specified by:

getObject in interface FactoryBean

Returns:

an instance of the bean (can be null)

See Also:

FactoryBeanNotInitializedException

getObjectType

public Class getObjectType()

Description copied from interface: FactoryBean

Return the type of object that this FactoryBean creates, or null if not known in advance.

This allows one to check for specific types of beans without instantiating objects, for example on autowiring.

In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:

getObjectType in interface FactoryBean

Returns:

the type of object that this FactoryBean creates, or null if not known at the time of the call

See Also:

ListableBeanFactory.getBeansOfType(java.lang.Class)

isSingleton

public boolean isSingleton()

Description copied from interface: FactoryBean

Is the object managed by this factory a singleton? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

NOTE: This method returning false does not necessarily indicate that returned objects are independent instances. An implementation of the extended SmartFactoryBean interface may explicitly indicate independent instances through its SmartFactoryBean.isPrototype() method. Plain FactoryBean implementations which do not implement this extended interface are simply assumed to always return independent instances if the isSingleton() implementation returns false.

Specified by:

isSingleton in interface FactoryBean

Returns:

if the exposed object is a singleton

See Also:

FactoryBean.getObject(), SmartFactoryBean.isPrototype()

destroy

public void destroy()

Close the EntityManagerFactory on bean factory shutdown.

Specified by:

destroy in interface DisposableBean