ABAP_to_the_Future

9
BRFplus
9.1 The Historic Location of Rules
You now know what rules are—but where are they stored? They start, of course,
in people’s heads. Prior to BRFplus, the rules in people’s heads were then converted
to rules in SAP by the use of cust omizing tables. In some cases, when the
customizing tables were not enough, they were coded in ABAP. This section discusses
each of these rule locations.
9.1.1 Rules in People’s Heads
Rules always start out in the head of a business expert—in this case, Baron Frankenstein.
Baron Frankenstein has rules inside his head for working out what
ingredients to use when making a mons ter. There are two main questions that
need to be answered: How sane does the monster need to be, and how scary does
the monster need to be?
There are three levels of sanity: mad (sanity level: 15% and under), average (sanity
level: 16% to 74%), and extra sane (sanity level: 75% and over). There are also
three levels of monster scariness: normal, scary, and extra scary.
Baron Frankenstein’s job is to build a monster that has the customer’s required
sanity level and scariness level using three possible sets of ingredients:
왘 Sugar/spice/all things nice
This ingredient is very cheap, but is only suitable for monsters that are not actually
extra scary.
왘 Instant monster mix—just add water
This ingredient is averagely priced, and what you generally would expect to
use.
왘 Snips/snails/puppy dog tails
This ingredient is quite expensive, but it is the only choice for really strong/
scary/mad/evil monsters.
How does the baron go about reconciling th e opposing aims of trying to use the
cheapest ingredients and still keeping his customers satisfied? He says it’s really
simple (everything is always obvious to the expert with 40 years of experience).
Just follow these basic rules:
360