Designing the Procedure Logic › Refine Synthesized Procedure Action Diagrams › Dynamically Modifying Video Properties in Online Procedures

Dynamically Modifying Video Properties in Online Procedures

Using the MAKE action statement, which modifies video properties, is restricted to Procedure Action Diagrams that directly support procedure steps. Any special handling of video attributes in a process-implementing procedure must take place in the synthesized Procedure Action Diagram.

The procedure logic can inspect the setting of Exit State on a return from a transformed procedure action block to determine whether video properties should be dynamically modified.

An example of this technique appears in the following sample code. The designer has added a condition followed by a make action to highlight the name of a duplicate customer. See lines 14 through 16.

Procedure Action Diagram With a MAKE Statement

MAINTAIN_CUSTOMER
          IMPORTS: Entity Viewimport customer
          EXPORTS: Entity Viewexport customer
EXIT STATE IS requested_operation_complete
     CASE OF COMMAND
     CASE delete
     USE delete_customer
          WHICH IMPORTS: Entity Viewimport customer
          WHICH EXPORTS: Entity Viewexport customer
     CASE add
     USE add_new_customer
          WHICH IMPORTS: Entity Viewimport customer
          WHICH EXPORTS: Entity Viewexport customer
          IF EXIT STATE IS EQUAL TO customer already exists
          MAKE export customer name “ERROR”
     EXIT STATE IS invalid_command