Oop report programme: call method

Question

hi, i need ur guys advice about my oop report.  its contain 2 class, lcl_main (main programme), lcl_disp(display report), lcl_update (upload report).  all 3 class defination as below:
*                     C.L.A.S.S  D.E.F.I.N.I.T.I.O.N
class lcl_main definition.
public section.
  methods: init,
           get_filename,
           load_data,
           chk_col,
           chk_data,
           chk_mandatory,
           disp_status.
endclass.
class lcl_disp definition inheriting from lcl_main.
public section.
  methods: chk_9700,
           disp_success.
endclass.
class lcl_update definition inheriting from lcl_main.
public section.
  methods: update9700.
endclass.
the idea was, i planned to put all methods which will be access by lcl_disp and lcl_update into lcl_main.  i currently cofious to call method at lcl_main. currently i done as below, which if want to display (user will choose radio button display - p_view) i will create the object for lcl_disp and call all method in lcl_main and lcl_disp , for example o_disp-> init ... o_disp->loaddata .. and etc. the problem was if i want to choose the update , i need to object for lcl_update and call again the lcl_main with:  o_update-> init ... o_update->loaddata .. and etc. the code as below.
the question , the programme can be successfully run with this method but i faced the problem when i tried to create a call method inside others method because at the START-OF-SELECTION i need to identify with object (lcl_disp or lcl_update) first.
2nd, i tried to figure out how at the start-of-selection , i no need to repeat to call method init, loaddata repeatly for different class (lcl_disp and lcl_update). really need advice. thank you.
*---------------------------------------------------------------------|
*                       INITIALIZATION                                             |
*---------------------------------------------------------------------|
initialization.
data: o_main type ref to lcl_main.
create object: o_main.
*                       START OF SELECTION                              *
start-of-selection.
data: o_disp type ref to lcl_disp,
        o_update type ref to lcl_update.
create object: o_disp, o_update.
if  p_view = 'X'. "for view report
  set handler o_handler->handle_event for all instances.
  call method o_disp->init.
  call method o_disp->load_data.
  call method o_disp->chk_col.
  "only proceeed if initial - col header and pernr syntax (pre 100 and length = 8)
    if o_disp->status = 0.
     call method o_disp->chk_data.
    endif.
     if o_disp->status = 0.
     call method o_disp->chk_mandatory.
    endif.
    if  o_disp->status = 0.
      call method o_disp->chk_9700.
    endif.
    call method o_disp->disp_status.
elseif p_upld = 'X'."for update report
  set handler o_handler->handle_event for all instances.
  call method o_update->init.
  call method o_update->load_data.
  call method o_update->chk_col.
  "only proceeed if initial - col header and pernr syntax (pre 100 and length = 8)
    if o_update->status = 0.
     call method o_update->chk_data.
    endif.
    if  o_update->status = 0.
      call method o_update->update9700.
    endif.
    call method o_update->disp_status.
endif.
class lcl_main implementation.
  method get_filename.
endmethod.
  method init.
  endmethod.
  method load_data.
endmethod.
method chk_col.
endmethod.
method chk_data.
endmethod.
method chk_mandatory.
endmethod.
method disp_status.
endmethod.
endclass.
class lcl_disp implementation.
method chk_9700.
endmethod.
method disp_success.
endclass.
class lcl_update implementation.
method update9700.
endmethod.
endclass.
Edited by: firdaus hashim on Nov 23, 2009 11:01 AM

Answer 1

Hello Sam,
Go to the class CL_DD_DOCUMENT (trxn SE24).
In the 'Attributes' tab, check for the attributes with SDYDO_ATTRIBUTE as the associated type.
It gives all the available attributes.
BR,
Suhas