Lets checkout the ABAP object oriented approach for reports when you want to get data from different data sources – Database and/or Archive .
In continuation to the previous article and in quest about the Selection object, lets check out this different flavor of the selection screen object.
Selection criteria object for the reports where you can implement the MVC for decoupling. This approach is using the FM RS_REFRESH_FROM_SELECTOPTIONS.
SWITCH usage with returning the object reference. This would be great to reduce lot of clutter from the design pattern implementation i.e. Factory design pattern.
CLASS_CONSTRUCTOR would be called automatically whenever the class would be accessed – either by creation of an instance or accessing any component. But seems like it is changed with ABAP 740.