How to get the components of table deep structure

[Former Member]

Hi experts,

Am not able to get the all components of mara table , why bcoz in mara table they included another structure.

Am able to disply only 2 fields only.

plz have a look below code :

data: text type string,
       it_table type table of mara,
       wa_table like line of it_table,
       lt_comp type ABAP_COMPONENT_TAB,
       ls_comp like line of lt_comp.
data: lo_ref type ref to CL_ABAP_STRUCTDESCR,
       lo_cast type ref to CX_SY_MOVE_CAST_ERROR.

try.
   lo_ref ?= CL_ABAP_TYPEDESCR=>DESCRIBE_BY_DATA( wa_table ).
   catch CX_SY_MOVE_CAST_ERROR into lo_cast.
   text = lo_cast->get_text( ).
endtry.
  lt_comp = lo_ref->get_components( ).
loop at lt_comp into ls_comp.
   write:/ ls_comp-name.
   clear: ls_comp.
endloop.

[kesavadas_thekkillath]

Change it as below.

data:tab type table of mara.
data:l_ref type ref to cl_abap_tabledescr,
     l_dref type ref to cl_abap_structdescr,
      text type string,
     lo_cast type ref to CX_SY_MOVE_CAST_ERROR..
data wa type abap_compdescr.
try.
    l_ref ?= cl_abap_typedescr=>describe_by_data( tab ).
    l_dref ?= l_ref->get_table_line_type( ).
    loop at l_dref->components into wa.
      write 😕 wa-name.
    endloop.
  catch cx_sy_move_cast_error into lo_cast.
    text = lo_cast->get_text( ).
endtry.