||Convenience class which clients may extend to pick up much of the Persistent interface
||basic implementation of RefreshListener interface.
||standard PMFactory implementation.
||Gives static access to a properly configured PersistenceManagers.
||adds wrapping and unwrapping of jdo items ( PMs, Extents, Queries )
to normal WrapperFactory functionality.
||represents a JDO object id, providing some information about the original
object as well in case the object is deleted.
||Manages links between objects that are interested in other objects being
refreshed, and the event that those other objects are refreshed.
||creates the transaction implementations which help in
stomp.jdo's transparent transaction management.
||wraps a JDO Transaction object, preventing any developer attempts
to begin or commit the transaction.