ABAP_to_the_Future

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ABAP in Eclipse
Double-click the one you want, and—bi
changing things to your heart’s content.
ngo—it opens up, and you can start
1.2.3 Creating a Method from the Calling Code
ABAP Objects was introduced with release 4.6C of SAP, and ever since that point
SAP has been pushing developers to use it. Even now, there is a lot of resistance.
If SAP wants programmers to switch to object-oriented (OO) programming, then
OO programming has to be just as easy as or easier than the procedural programming
that programmers have been used to.
Sadly, even after all these years, in your SE80 environment there is one thing you
can do with procedural programming that you cannot do with OO programming
using local methods: FORM routines. For example, consider the sample procedural
code in Listing 1.2, which calls a FORM routine.
PERFORM create_monster USING ld_number_of_heads
CHANGING ld_monster_number.
Listing 1.2 FORM Routine
If there were no such FORM routine, then when you double-click CREATE_MONSTER
the system would ask you if you wanted to create that missing FORM routine.
Then, it would create it for you, along with the signature (though you would have
to manually code the TYPES of the signature parameters).
Now, consider the object-oriented code calling a method in Listing 1.3.
ld_monster_number = lo_laboratory->create_monster( ld_number_of_heads).
Listing 1.3 Method
You may expect that, if there were no such method, then the exact same thing
would happen, and a skeleton method im plementation and definition would be
created for you when you double-clicked the CREATE_MONSTER method. You
would, unfortunately, be wrong.
People have moaned and groaned about th at on the Internet for 14 years to no
avail. What happens when you try the same thing in ABAP in Eclipse? First of all,
write a small program (Listing 1.4).
CLASS lcl_laboratory DEFINITION.
PUBLIC SECTION.
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