| ExtendedUOWAction | A piece of logic to be performed under a particular type of unit of work. | 
| UOWAction | A piece of logic to be performed under a particular type of unit of work. | 
| UOWActionException | This exception is thrown by UOWManager.runUnderUOW() to indicate that the
 action being performed threw a checked exception. | 
| UOWException | 
 This class provides a generic indication of failure of the completion of a
 unit of work (UOW) begun by a call to the runUnderUOW method on the UOWManager
 interface. | 
| UOWManager | 
 This interface provides functionality to execute application
 logic under a specific unit of work (UOW). |