Create Fieldcatalog for INCLUDE STRUCTURE types?

Question

I created a structure with "Types":

TYPES: BEGIN OF ty_pers_bst.
     INCLUDE STRUCTURE zieb_pers_bst.
     TYPES: lifname TYPE zieb_lieferant-lifname,
   END OF ty_pers_bst.

data: i_structure_bst_add TYPE ty_pers_bst.

I now want to use 'LVC_FIELDCATALOG_MERGE' to create a fieldcatalog based on this structure. However I get the error, that no fieldcatalog can be found.

Is there an alternative on how I can add a single field to a preexisting fieldcatalog based on my "zieb_pers_bst" DDIC-Structure, or do I have to create a new DDIC-Structure solely for this single field?

Answer 1

Try this sample:

TYPES: BEGIN OF ty_pers_bst.
        INCLUDE STRUCTURE a900.
        TYPES: lifname TYPE lfa1-name1,
       END OF ty_pers_bst.

DATA: i_structure_bst_add TYPE TABLE OF ty_pers_bst.

DATA: table TYPE REF TO data.
DATA: fcat  TYPE lvc_t_fcat.
CREATE DATA table LIKE i_structure_bst_add.
ASSIGN table->* TO FIELD-SYMBOL(<table>).
TRY.
    cl_salv_table=>factory( IMPORTING r_salv_table = DATA(salv_table)
                            CHANGING  t_table      = <table> ).
    fcat = cl_salv_controller_metadata=>get_lvc_fieldcatalog(
    r_columns      = salv_table->get_columns( )
    r_aggregations = salv_table->get_aggregations( ) ).
  CATCH cx_root.
ENDTRY.