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EclipseLink 2.2.0, build 'v20110202-r8913' API Reference | ||||||||
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public interface EntityManagerFactory
Interface used to interact with the entity manager factory for the persistence unit.
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.
Method Summary | |
---|---|
void |
close()
Close the factory, releasing any resources that it holds. |
EntityManager |
createEntityManager()
Create a new application-managed EntityManager . |
EntityManager |
createEntityManager(java.util.Map map)
Create a new application-managed EntityManager with the
specified Map of properties. |
Cache |
getCache()
Access the cache that is associated with the entity manager factory (the "second level cache"). |
CriteriaBuilder |
getCriteriaBuilder()
Return an instance of CriteriaBuilder for the creation of
CriteriaQuery objects. |
Metamodel |
getMetamodel()
Return an instance of Metamodel interface for access to the
metamodel of the persistence unit. |
PersistenceUnitUtil |
getPersistenceUnitUtil()
Return interface providing access to utility methods for the persistence unit. |
java.util.Map<java.lang.String,java.lang.Object> |
getProperties()
Get the properties and associated values that are in effect for the entity manager factory. |
boolean |
isOpen()
Indicates whether the factory is open. |
Method Detail |
---|
EntityManager createEntityManager()
EntityManager
.
This method returns a new EntityManager
instance each time
it is invoked.
The isOpen
method will return true on the returned instance.
java.lang.IllegalStateException
- if the entity manager factory
has been closedEntityManager createEntityManager(java.util.Map map)
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.
map
- properties for entity manager
java.lang.IllegalStateException
- if the entity manager factory
has been closedCriteriaBuilder getCriteriaBuilder()
CriteriaBuilder
for the creation of
CriteriaQuery
objects.
java.lang.IllegalStateException
- if the entity manager factory
has been closedMetamodel getMetamodel()
Metamodel
interface for access to the
metamodel of the persistence unit.
java.lang.IllegalStateException
- if the entity manager factory
has been closedboolean isOpen()
void close()
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.
java.lang.IllegalStateException
- if the entity manager factory
has been closedjava.util.Map<java.lang.String,java.lang.Object> getProperties()
java.lang.IllegalStateException
- if the entity manager factory
has been closedCache getCache()
Cache
interface
java.lang.IllegalStateException
- if the entity manager factory
has been closedPersistenceUnitUtil getPersistenceUnitUtil()
PersistenceUnitUtil
interface
java.lang.IllegalStateException
- if the entity manager factory
has been closed
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EclipseLink 2.2.0, build 'v20110202-r8913' API Reference | ||||||||
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