IDataManager

IComponent
ITransactionParticipant

Interface

add ( ob )

Add ob to the database

Note that the object's oid must be unique or None, and that the object must be un-owned, or already owned by this DM. If the oid is a duplicate, raise InvalidKeyError. If the object is already owned by this DM, this method is a no-op.

flush ( ob=None )

Sync stored state to in-memory state of ob or all objects

newItem ( klass=None )

DEPRECATED: Create+return a new persistent object of class klass

This method is deprecated; please use add() instead.

remove ( ob )

Remove ob from the database

The object must belong to this DM; after this method is called it will no longer belong to the DM. (The actual removal from the database is deferred until transaction commit.)