ABAP_to_the_Future

Creating Enhancements 6.2
Figure 6.2 Implicit Enhancement Point
However, implicit enhancement points ar e still limited to the start and end of
routines. If you want to add your own code in the middle of a standard SAP routine,
then there needs to be an explicit enhancement point added by SAP.
6.2 Creating Enhancements
The process of actually creating an enhancement doesn’t change based on
whether it is explicit or implicit, although the way to start the creation is slightly
different. If you’re dealing with an explicit enhancement, then you put your cursor
on the line that says ENHANCEMENT_POINT; if you are dealing with an implicit
enhancement point, then you can position your cursor on the line of double quotation
marks.
In both cases, you then navigate to Edit 폷 Enhancement Operations 폷 Create
Implementation, and you will be guided throug h the process of adding in an
enhancement implementation (here, “enhancement” refers to the fact that an area
of standard code can be enhanced; an “enhancement implementation” refers to a
specific section of custom code that you have written).
You’ll now look at creating such an enhancement implementation, first in a procedural
program and then in an object-oriented (OO) program.
6.2.1 Procedural Programming
As an example, pretend that one of your custom programs is a standard SAP program—and
then butcher it with every possible enhancement option you can
imagine. (I would like to stress that I’ m not actually recommending you do this;
it’s just to show what’s possible.)
This example will guide you through pret ending to change a standard SAP function
module. You will add a new option al importing parameter, do something
with that value at the start of the function module, and then at the end of the
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