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//$Id: EntityManagerFactory.java 11282 2007-03-14 22:05:59Z epbernard $
package javax.persistence;
import java.util.Map;
/**
* 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.
*
* @author Emmanuel Bernard
*/
public interface EntityManagerFactory
{
/**
* 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.
*/
EntityManager createEntityManager
();
/**
* 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.
*/
EntityManager createEntityManager
(Map map
);
/**
* 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.
*/
void close
();
/**
* Indicates whether or not this factory is open. Returns
* true until a call to close has been made.
*/
public boolean isOpen
();
}