EntityManagerFactorypublic interface EntityManagerFactory The EntityManagerFactory interface is used
by the application to obtain an application-managed entity
manager. When the application has finished using the entity
manager factory, and/or at application shutdown, the
application should close the entity manager factory.
Once an EntityManagerFactory has been closed, all its entity
managers are considered to be in the closed state. |
| Methods Summary |
|---|
| public void | close()Close the factory, releasing any resources that it holds.
After a factory instance is closed, all methods invoked on
it will throw an IllegalStateException, except for isOpen,
which will return false. Once an EntityManagerFactory has
been closed, all its entity managers are considered to be
in the closed state.
| | public javax.persistence.EntityManager | createEntityManager()Create a new EntityManager.
This method returns a new EntityManager instance each time
it is invoked.
The isOpen method will return true on the returned instance.
| | public javax.persistence.EntityManager | createEntityManager(java.util.Map map)Create a new EntityManager with the specified Map of
properties.
This method returns a new EntityManager instance each time
it is invoked.
The isOpen method will return true on the returned instance.
| | public boolean | isOpen()Indicates whether or not this factory is open. Returns true
until a call to close has been made.
|
|
