[ABAP] Feldkatalog (LVC / SLIS) aus Dictionary-Struktur oder interner Tabelle erstellen

Variante 1 (FuBa)

DATA : it_fcat_lvc TYPE lvc_t_fcat.

CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
  EXPORTING
    i_structure_name = 'SPFLI' " Dictionary-Struktur
  CHANGING
    ct_fieldcat      = it_fcat_lvc.

DATA: it_fcat_slis TYPE slis_t_fieldcat_alv.

CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
  EXPORTING
    i_structure_name = 'SPFLI' " Dictionary-Struktur
  CHANGING
    ct_fieldcat      = it_fcat_slis.

Variante 2 (cl_salv_controller_metadata)

DATA: o_alv TYPE REF TO cl_salv_table.
  
...

DATA(o_fcat_lvc) = cl_salv_controller_metadata=>get_lvc_fieldcatalog( r_columns = o_alv->get_columns( )
                                                                      r_aggregations = o_alv->get_aggregations( ) ).
                                                                      
DATA(o_fcat_slis) = cl_salv_controller_metadata=>get_slis_fieldcatalog( r_columns = o_alv->get_columns( )
                                                                        r_aggregations = o_alv->get_aggregations( ) ).