# Package org.apache.cayenne.access.util

- Class Summary
  Class | Description
  --- | ---
  DefaultOperationObserver | Simple implementation of OperationObserver interface.
  DoNothingOperationObserver | A very simple observer that does nothing with provided data, and rethrows any reported exceptions.
  IteratedSelectObserver | OperationObserver that is used to track the execution of SelectQueries with results returned as ResultIterator.