CA 2E Quick Tour › Defining Functions › New Functions

New Functions

To add a new function you must first create it, and then define additional aspects of the function.

You may choose to add functions for the HORSE file, such as Select Mares and Select Stallion. These functions would enable you to display a list of mares only or stallions only in response to an inquiry.

You would begin by viewing a list of possible function types and access paths for the HORSE file by typing ? in the Function type column, and typing ? in the Access path column.

Enter the function names, function types, and access paths as shown in the following illustration:

EDIT FUNCTIONS                           My model                            

 File name. . . : Horse                                  **   1ST LEVEL  **  

 ? Function                Function type                Access path             

   Change Horse            Change object                Update index            

   Create Horse            Create object                Update index            

   Delete Horse            Delete object                Update index    Edit Horse              Edit file                    Retrieval index         

   Select Horse            Select record                Retrieval index         

   Select Mares            Select record                Mares                   

   Select Stallions        Select record                Stallions              

                                                                        More...

 SEL: Z=Details   P=Parms   F=Action diagram   S=Device   D=Delete   O=Open    

      T=Structure   A=Access path   G/J=Generate function   H=Generate HTML ...

 F3=Exit   F5=Reload   F7=File details   F9=Add functions   F23=More options   

 F11=Next View   F17=Services   F21=Copy *Template function

Press Enter and the functions are added.

The two messages "Function ‘Select Mares’ is being created" and "Function ‘Select Stallions’ is being created" will appear briefly at the bottom of the panel. The functions will now be declared to your design model and are available for reference by other functions. At this stage no further definition is required but you will later need to define additional aspects of the new functions before they can be implemented.

Each interactive external function is implemented by:

• An HLL program
• A DDS display file
• A file containing Help text

The implementation language is controlled by the target HLL. You may generate in  RPG, COBOL, UNIX, or Client Server Applications depending on your version of CA 2E.

The default implementation language for new functions is controlled by the YHLLGEN model value.