getExtent(persistenceCapableClass, subclasses) - JDO PersistenceManager's method
Method
javax.jdo.PersistenceManager
Extent<T> getExtent(
Class<T> persistenceCapableClass,
boolean subclasses
)
The
PersistenceManager manages a collection of instances in the data store based on the class of the instances. This method returns an
Extent of instances in the data store that might be iterated or given to a
Query. The
Extent itself might not reference any instances, but only hold the class name and an indicator as to whether subclasses are included in the
Extent.
Note that the Extent might be very large.
- Parameters:
-
persistenceCapableClass-Classof instances -
subclasses- whether to include instances of subclasses
- Returns:
-
an
Extentof the specifiedClass
- Since:
- JDO 1.0
- See Also:
-
Query
