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## org.springframework.orm.toplink
Class LocalSessionFactoryBean

    java.lang.Object
      org.springframework.orm.toplink.LocalSessionFactory
          org.springframework.orm.toplink.LocalSessionFactoryBean

All Implemented Interfaces:
  BeanClassLoaderAware, DisposableBean, FactoryBean, InitializingBean, PersistenceExceptionTranslator

    public class LocalSessionFactoryBean

extends LocalSessionFactory
implements FactoryBean, BeanClassLoaderAware, InitializingBean, DisposableBean, PersistenceExceptionTranslator

`FactoryBean` that creates a TopLink `SessionFactory`. This is the usual way to set up a shared TopLink SessionFactory in a Spring application context; the SessionFactory can then be passed to TopLink-based DAOs via dependency injection.

See the base class `LocalSessionFactory` for configuration details.

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 a LocalSessionFactoryBean automatically enables a PersistenceExceptionTranslationPostProcessor to translate TopLink exceptions.

If your DAOs expect to receive a raw TopLink Session, consider defining a `TransactionAwareSessionAdapter` in front of this bean. This adapter will provide a TopLink Session rather than a SessionFactory as bean reference. Your DAOs can then, for example, access the currently active Session and UnitOfWork via `Session.getActiveSession()` and `Session.getActiveUnitOfWork()`, respectively. Note that you can still access the SessionFactory as well, by defining a bean reference that points directly at the LocalSessionFactoryBean.

Since:
  1.2
Author:
  Juergen Hoeller
See Also:
  `LocalSessionFactory`, `TransactionAwareSessionAdapter`, `PersistenceExceptionTranslationPostProcessor`

Field Summary

Fields inherited from class org.springframework.orm.toplink.LocalSessionFactory
`DEFAULT_SESSION_NAME, DEFAULT_SESSIONS_XML, logger`

Constructor Summary
`LocalSessionFactoryBean()`

Method Summary
`void` | `afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`DataAccessException` | `convertTopLinkAccessException(oracle.toplink.exceptions.TopLinkException ex)` Convert the given TopLinkException to an appropriate exception from the `org.springframework.dao` hierarchy.
`void` | `destroy()` Invoked by a BeanFactory on destruction of a singleton.
`SQLExceptionTranslator` | `getJdbcExceptionTranslator()` Return the JDBC exception translator for this instance, if any.
`Object` | `getObject()` Return an instance (possibly shared or independent) of the object managed by this factory.
`Class` | `getObjectType()` Return the type of object that this FactoryBean creates, or `null` if not known in advance.
`boolean` | `isSingleton()` Is the object managed by this factory a singleton?
`void` | `setBeanClassLoader(ClassLoader classLoader)` Sets the given bean ClassLoader as TopLink Session ClassLoader.
`void` | `setJdbcExceptionTranslator(SQLExceptionTranslator jdbcExceptionTranslator)` Set the JDBC exception translator for this SessionFactory.
`DataAccessException` | `translateExceptionIfPossible(RuntimeException ex)` Implementation of the PersistenceExceptionTranslator interface, as autodetected by Spring's PersistenceExceptionTranslationPostProcessor.

Methods inherited from class org.springframework.orm.toplink.LocalSessionFactory
`createSessionFactory, getLoginPropertyMap, getSessionManager, loadDatabaseSession, newSessionFactory, setConfigLocation, setDatabaseLogin, setDatabaseLogin, setDatabasePlatform, setDataSource, setLoginProperties, setLoginPropertyMap, setSessionClassLoader, setSessionLog, setSessionName`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### LocalSessionFactoryBean

    public LocalSessionFactoryBean()

Method Detail

### setJdbcExceptionTranslator

    public void setJdbcExceptionTranslator(SQLExceptionTranslator jdbcExceptionTranslator)

  Set the JDBC exception translator for this SessionFactory.

  Applied to any SQLException root cause of a TopLink DatabaseException, within Spring's PersistenceExceptionTranslator mechanism. The default is to rely on TopLink's native exception translation.

  See Also:
    `DatabaseException`, `SQLErrorCodeSQLExceptionTranslator`, `SQLStateSQLExceptionTranslator`

### getJdbcExceptionTranslator

    public SQLExceptionTranslator getJdbcExceptionTranslator()

  Return the JDBC exception translator for this instance, if any.

### setBeanClassLoader

    public void setBeanClassLoader(ClassLoader classLoader)

  Sets the given bean ClassLoader as TopLink Session ClassLoader.

  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()`
  See Also:
    `LocalSessionFactory.setSessionClassLoader(java.lang.ClassLoader)`

### afterPropertiesSet

    public void afterPropertiesSet()
                            throws oracle.toplink.exceptions.TopLinkException

  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:
    `oracle.toplink.exceptions.TopLinkException`

### getObject

    public Object getObject()

  Description copied from interface: `FactoryBean`
  Return an instance (possibly shared or independent) of the object managed by this factory.

  As with a `BeanFactory`, this allows support for both the Singleton and Prototype design pattern.

  If this FactoryBean is not fully initialized yet at the time of the call (for example because it is involved in a circular reference), throw a corresponding `FactoryBeanNotInitializedException`.

  As of Spring 2.0, FactoryBeans are allowed to return `null` objects. The factory will consider this as normal value to be used; it will not throw a FactoryBeanNotInitializedException in this case anymore. FactoryBean implementations are encouraged to throw FactoryBeanNotInitializedException themselves now, as appropriate.

  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:
    whether the exposed object is a singleton
  See Also:
    `FactoryBean.getObject()`, `SmartFactoryBean.isPrototype()`

### translateExceptionIfPossible

    public DataAccessException translateExceptionIfPossible(RuntimeException ex)

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

  Converts the exception if it is a TopLinkException; else returns `null` to indicate an unknown exception.

  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`, `convertTopLinkAccessException(oracle.toplink.exceptions.TopLinkException)`

### convertTopLinkAccessException

    public DataAccessException convertTopLinkAccessException(oracle.toplink.exceptions.TopLinkException ex)

  Convert the given TopLinkException to an appropriate exception from the `org.springframework.dao` hierarchy.

  Will automatically apply a specified SQLExceptionTranslator to a TopLink DatabaseException, else rely on TopLink's default translation.

  Parameters:
    `ex` - TopLinkException that occured
  Returns:
    a corresponding DataAccessException
  See Also:
    `SessionFactoryUtils.convertTopLinkAccessException(oracle.toplink.exceptions.TopLinkException)`, `setJdbcExceptionTranslator(org.springframework.jdbc.support.SQLExceptionTranslator)`

### destroy

    public void destroy()

  Description copied from interface: `DisposableBean`
  Invoked by a BeanFactory on destruction of a singleton.

  Specified by:
    `destroy` in interface `DisposableBean`

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