Designing the Procedure Logic › Server Procedure Structure

Server Procedure Structure

A server Procedure Action Diagram contains actions needed to handle commands sent from the client procedure in order to direct the order of execution and pick up any application errors and send them back to the client.

Server procedures are designated On-line With no Display.

Server procedures do not contain event handlers since events are associated with the graphical user interface.

Completion and maintenance of action diagrams are easier if they follow a predictable pattern. The following outlines a possible standard action diagram structure for a server procedure that contains link flows or remote use statements, or both from client procedures. The structure is designed to handle links or remote use statements from more than one client procedure.

• View definitions:
  • Import views
  • Export views
  • Local views
• Initial processing:
  • Move import view contents to export views
  • Set initial values
  • Set a default return code
  • Set a return with command
  • Test for commands to control subsequent processing.
• Processing:
  • Application processing
  • Move data to export views
  • Set return codes
  • (Optionally) set exit states
  • Exit