Creation of own built-in function

[Nil]

Hi All,
How to Create your own built in function like %Date, %Subst or %Char?
First off all is it possible, if yes then how to create?

Thanks - NIL

[vikramx]

Re: Creation of own built-in function

As such you could consider procedures as user-defined BIFs but as far as I know you cannot prefix them with a %.

[tomliotta]

Re: Creation of own built-in function

As noted by vikramx, you can't create your own "built-in functions". If you create something, it won't be "built-in". Instead, you can create service programs and export procedures from them. Referencing those procedures as functions can be a very good extension to the set of "built-in functions".

[Nil]

Re: Creation of own built-in function

As such you could consider procedures as user-defined BIFs but as far as I know you cannot prefix them with a %.

You mean using SQL create function / create procedure this way we can create our own function or procedure.

[danlong005]

Re: Creation of own built-in function

No, not a stored procedure. In RPG a function is called a procedure. He means something like the following.

ctl-opt nomain;

dcl-proc getName;
  dcl-pi *n char(50);
  end-pi;
  dcl-s name char(50);

  // do some code to get the name

  return name;
end-proc;

Now if you compile that up into a service program you can use it in all your other programs. I have pasted below a good example. It uses the fixed format style of RPG.

http://www.mysamplecode.com/2011/07/rpgle-service-program-example-iseries.html