Can we create complete report in OOPs

Question

Hi,
Could you please advice if we can code the complete report in SE24 and call it in SE38 report..
For ex. I have a report followed by ALV output..now can i write everything in a Z Object (from decalration to output ) ..
Kindly suggest if it is a good strategy than simply using standard objects in report editor.
If possible, request you to provide a sample report using complete OOPs approach.
Thanks,
Gaurav

Answer 1

Yes...the entire thing, INCLUDING SELECTION SCREEN, can be written in OO.  I haven't tried building the whole thing in SE24, then executing....what's the point?  A report may be pretty much one-off, but utilize pieces of classes.
SAP Press recent manual "Official ABAP Progamming Guidlines" contains an example using Separation of Concerns/Software Layering approach that includes a selection screen call in the Presentation layer.  It can be done!  What I don't see is an easy or elegant way to re-process the selection screen if I must reject what the user has input and get different values....
In that program, BTW, the start of selection event contains only:
report->main( ).
Main might look like:
(from my program, not their version).  E-me if you want the entire program.
class report definition.
  public section.
    class-methods main.
endclass.                    "report DEFINITION
class report implementation.
  method main.
    data: gt_itab   type table of gtyp_itab,
          so_tstmp  type table of iseldats,
          rpt_tab   type table of gtyp_rpt.
    data: rc      type sy-subrc.
    gui_level=>get_input_parms( ).  "calls selection screen!
    gui_level=>create_date_table(
             changing so_tstmp = so_tstmp ).
    persistence_level=>get_data_from_db(
                  exporting so_tstmp = so_tstmp
                  importing gt_itab = gt_itab
                                 rc = rc ).
    if rc eq 0.
      apps_level=>sort_itab(
              changing gt_itab = gt_itab ).
      apps_level=>build_report_table(
              changing gt_itab = gt_itab
                       rpt_tab = rpt_tab ).
      if sy-subrc eq 0.
        gui_level=>display_alv_form( rpt_tab  ).
      endif.
    endif.
  endmethod.                    "main
endclass.                    "report IMPLEMENTATION