• Details on primitives.
  • Primitives have three processing stages.

    Open	Initialization.
    Process	Doing the work.
    Close	Finalization.

  • The three processing stages map to three primary methods in a primitive.

    open()	Reads command parameters/switches and opens files.
    process()	Processes a set of data. (Called many times.)
    close()	Closes any files, reports back any results.

  • All primitives extend from Primitive which extends from Command. Command has a run() method that handles the calling of open(), process() (many times), and close().