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I am am using my display_data-method quite often.

And every now and then, I stumbled over a dump, e.g. wenn the table provided was "deep" -> included other components that where themselves tables.

I often thought: If we could just drop those columns but display all the others - would't that be nice?!
But I never created the thing.
Until now.

So here it is:

(Edit: it was improved a little here: )
METHODS display_data_deep_enabled IMPORTING it_data TYPE ANY TABLE.

  METHOD display_data_deep_enabled.
DATA lo_table_descr TYPE REF TO cl_abap_tabledescr.
DATA lo_struct_descr TYPE REF TO cl_abap_structdescr.

lo_table_descr ?= cl_abap_tabledescr=>describe_by_data( it_data ).
lo_struct_descr ?= lo_table_descr->get_table_line_type( ).
"note: this might fail if it's a single-coloum-Table.

DATA(lt_components_with_ref) = lo_struct_descr->get_components( ).
DATA(lt_components_simple_tab) = lo_struct_descr->components.

"find and remove the components that would hurt us (that is: dump)
LOOP AT lt_components_simple_tab ASSIGNING FIELD-SYMBOL(<component>)
WHERE type_kind = cl_abap_tabledescr=>typekind_table.
DELETE lt_components_with_ref WHERE name = <component>-name.

" New Structure + Table.
lo_struct_descr = cl_abap_structdescr=>create( p_components = lt_components_with_ref ).
lo_table_descr = cl_abap_tabledescr=>create( p_line_type = lo_struct_descr ).
DATA lt_new TYPE REF TO data.
" Create the Data-Ref of the new Type.
CREATE DATA lt_new TYPE HANDLE lo_table_descr.
" Fill it with data:
lt_new->* = CORRESPONDING #( it_data ).

cl_salv_table=>factory( IMPORTING r_salv_table = DATA(lref_alv)
CHANGING t_table = lt_new->* ).
CATCH cx_salv_msg.

lref_alv->get_layout( )->set_key( VALUE #( report = sy-repid ) ).
lref_alv->get_layout( )->set_default( abap_true ).
lref_alv->get_layout( )->set_save_restriction( if_salv_c_layout=>restrict_none ).
lref_alv->get_functions( )->set_all( abap_true ).
lref_alv->display( ).


- This made me use / (again) learn about the ABAP RTTS (RTTI + RTTC)
- It always bothered me a bit, that that parameter to display_data had to be a CHANGING one. Now it's IMPORTING. Feels way better.