New Way of Object Casting in ABAP
In OO ABAP, for object down casting operator[ ?= ] is used. But now we have the new [ CAST ] operator which can do the same for the object down casting.
CLASS c1 DEFINITION.
ENDCLASS.
CLASS c2 DEFINITION INHERITING FROM c1.
ENDCLASS.
CLASS c3 DEFINITION INHERITING FROM c1.
ENDCLASS.
START-OF-SELECTION.
DATA: obj1 TYPE REF TO c1,
obj2 TYPE REF TO c2,
obj3 TYPE REF TO c2,
obj4 TYPE REF TO c2.
CREATE OBJECT obj2.
* Up Casting
obj1 = obj2.
* Old Down Casting Syntax
obj3 ?= obj1.
* New Downcasting Syntax
obj4 = CAST #( obj1 ).
Result:
SAPCODES 