org.springframework.orm.jpa

Class AbstractEntityManagerFactoryBean

java.lang.Object

org.springframework.orm.jpa.AbstractEntityManagerFactoryBean

All Implemented Interfaces:

java.io.Serializable, Aware, BeanClassLoaderAware, BeanFactoryAware, BeanNameAware, DisposableBean, FactoryBean<EntityManagerFactory>, InitializingBean, PersistenceExceptionTranslator, EntityManagerFactoryInfo

Direct Known Subclasses:

LocalContainerEntityManagerFactoryBean, LocalEntityManagerFactoryBean

public abstract class AbstractEntityManagerFactoryBean
extends java.lang.Object
implements FactoryBean<EntityManagerFactory>, BeanClassLoaderAware, BeanFactoryAware, BeanNameAware, InitializingBean, DisposableBean, EntityManagerFactoryInfo, PersistenceExceptionTranslator, java.io.Serializable

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 conventions as well as Spring's customizable JpaVendorAdapter mechanism, 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, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	logger Logger available to subclasses
EntityManagerFactory	nativeEntityManagerFactory Raw EntityManagerFactory as returned by the PersistenceProvider

Constructor Summary

Constructors

Constructor and Description
AbstractEntityManagerFactoryBean()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected EntityManagerFactory	createEntityManagerFactoryProxy(EntityManagerFactory emf) Create a proxy of the given EntityManagerFactory.
protected abstract 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.
java.lang.ClassLoader	getBeanClassLoader() Return the ClassLoader that the application's beans are loaded with.
javax.sql.DataSource	getDataSource() Return the JDBC DataSource that this EntityManagerFactory obtains its JDBC Connections from.
java.lang.Class<? extends 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.
java.util.Map<java.lang.String,java.lang.Object>	getJpaPropertyMap() Allow Map access to the JPA properties to be passed to the persistence provider, with the option to add or override specific entries.
JpaVendorAdapter	getJpaVendorAdapter() Return the JpaVendorAdapter implementation for this EntityManagerFactory, or null if not known.
EntityManagerFactory	getNativeEntityManagerFactory() Return the raw underlying EntityManagerFactory.
EntityManagerFactory	getObject() Return the singleton EntityManagerFactory.
java.lang.Class<? extends EntityManagerFactory>	getObjectType() Return the type of object that this FactoryBean creates, or null if not known in advance.
PersistenceProvider	getPersistenceProvider() Return the underlying PersistenceProvider that the underlying EntityManagerFactory was created with.
PersistenceUnitInfo	getPersistenceUnitInfo() Return the PersistenceUnitInfo used to create this EntityManagerFactory, if the in-container API was used.
java.lang.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? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?
void	setBeanClassLoader(java.lang.ClassLoader classLoader) Callback that supplies the bean class loader to a bean instance.
void	setBeanFactory(BeanFactory beanFactory) Callback that supplies the owning factory to a bean instance.
void	setBeanName(java.lang.String name) Set the name of the bean in the bean factory that created this bean.
void	setEntityManagerFactoryInterface(java.lang.Class<? extends EntityManagerFactory> emfInterface) Specify the (potentially vendor-specific) EntityManagerFactory interface that this EntityManagerFactory proxy is supposed to implement.
void	setEntityManagerInterface(java.lang.Class<? extends EntityManager> emInterface) 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(java.util.Properties jpaProperties) Specify JPA properties, to be passed into Persistence.createEntityManagerFactory (if any).
void	setJpaPropertyMap(java.util.Map<java.lang.String,?> 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(PersistenceProvider persistenceProvider) Set the PersistenceProvider instance to use for creating the EntityManagerFactory.
void	setPersistenceProviderClass(java.lang.Class<? extends PersistenceProvider> persistenceProviderClass) Set the PersistenceProvider implementation class to use for creating the EntityManagerFactory.
void	setPersistenceUnitName(java.lang.String persistenceUnitName) Specify the name of the EntityManagerFactory configuration.
DataAccessException	translateExceptionIfPossible(java.lang.RuntimeException ex) Implementation of the PersistenceExceptionTranslator interface, as autodetected by Spring's PersistenceExceptionTranslationPostProcessor.
protected java.lang.Object	writeReplace()

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 EntityManagerFactory nativeEntityManagerFactory

Raw EntityManagerFactory as returned by the PersistenceProvider

Constructor Detail

AbstractEntityManagerFactoryBean

public AbstractEntityManagerFactoryBean()

Method Detail

setPersistenceProviderClass

public void setPersistenceProviderClass(java.lang.Class<? extends 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(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 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(java.lang.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 java.lang.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 result 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(java.util.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(java.util.Map<java.lang.String,?> 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 java.util.Map<java.lang.String,java.lang.Object> 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]".

setEntityManagerFactoryInterface

public void setEntityManagerFactoryInterface(java.lang.Class<? extends EntityManagerFactory> emfInterface)

Specify the (potentially vendor-specific) EntityManagerFactory interface that this EntityManagerFactory proxy is supposed to implement.

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

See Also:

JpaVendorAdapter.getEntityManagerFactoryInterface()

setEntityManagerInterface

public void setEntityManagerInterface(java.lang.Class<? extends EntityManager> emInterface)

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 java.lang.Class<? extends EntityManager> getEntityManagerInterface()

Description copied from interface: EntityManagerFactoryInfo

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

A null return value suggests that autodetection is supposed to happen: either based on a target EntityManager instance or simply defaulting to javax.persistence.EntityManager.

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.

getJpaVendorAdapter

public JpaVendorAdapter getJpaVendorAdapter()

Return the JpaVendorAdapter implementation for this EntityManagerFactory, or null if not known.

setBeanClassLoader

public void setBeanClassLoader(java.lang.ClassLoader classLoader)

Description copied from interface: BeanClassLoaderAware

Callback that supplies the bean class loader to a bean instance.

Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean's InitializingBean.afterPropertiesSet() method or a custom init-method.

Specified by:

setBeanClassLoader in interface BeanClassLoaderAware

Parameters:

classLoader - the owning class loader; may be null in which case a default ClassLoader must be used, for example the ClassLoader obtained via ClassUtils.getDefaultClassLoader()

getBeanClassLoader

public java.lang.ClassLoader getBeanClassLoader()

Description copied from interface: EntityManagerFactoryInfo

Return the ClassLoader that the application's beans are loaded with.

Proxies will be generated in this ClassLoader.

Specified by:

getBeanClassLoader in interface EntityManagerFactoryInfo

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)

Description copied from interface: BeanFactoryAware

Callback that supplies the owning factory to a bean instance.

Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean.afterPropertiesSet() or a custom init-method.

Specified by:

setBeanFactory in interface BeanFactoryAware

Parameters:

beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.

See Also:

BeanInitializationException

setBeanName

public void setBeanName(java.lang.String name)

Description copied from interface: BeanNameAware

Set the name of the bean in the bean factory that created this bean.

Invoked after population of normal bean properties but before an init callback such as InitializingBean.afterPropertiesSet() or a custom init-method.

Specified by:

setBeanName in interface BeanNameAware

Parameters:

name - the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils.originalBeanName(String) method to extract the original bean name (without suffix), if desired.

afterPropertiesSet

public final void afterPropertiesSet()
                              throws 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:

PersistenceException

createEntityManagerFactoryProxy

protected EntityManagerFactory createEntityManagerFactoryProxy(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 EntityManagerFactory createNativeEntityManagerFactory()
                                                                  throws 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:

PersistenceException - if the EntityManager cannot be created

translateExceptionIfPossible

public DataAccessException translateExceptionIfPossible(java.lang.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 to translate

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 from an actual persistence problem)

See Also:

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

getNativeEntityManagerFactory

public 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 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 javax.sql.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 EntityManagerFactory getObject()

Return the singleton EntityManagerFactory.

Specified by:

getObject in interface FactoryBean<EntityManagerFactory>

Returns:

an instance of the bean (can be null)

See Also:

FactoryBeanNotInitializedException

getObjectType

public java.lang.Class<? extends EntityManagerFactory> 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<EntityManagerFactory>

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<T>)

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<EntityManagerFactory>

Returns:

whether 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

writeReplace

protected java.lang.Object writeReplace()
                                 throws java.io.ObjectStreamException

Throws:

java.io.ObjectStreamException