createEntityManagerFactory(emName, map) - JPA PersistenceProvider's method
Called by Persistence
class when an EntityManagerFactory
is to be created.
- Parameters:
-
emName
- the name of the persistence unit -
map
- a Map of properties for use by the persistence provider. These properties may be used to override the values of the corresponding elements in the persistence.xml
file or specify values for properties not specified in the persistence.xml
(and may be null if no properties are specified).
- Returns:
- EntityManagerFactory for the persistence unit, or null if the provider is not the right provider
- Since:
- JPA 1.0