get_ddic_reference( ) returns blanks

[luis_rod]

Hi all:

When using CL_SALV_TABLE, how do I get the catalog info for a specific column (e.g., the table name)?

I’m trying this (showing only the most relevant lines):In this case, get_ddic_reference returns blank data (ddic-table = ‘ ‘).

DATA cols  TYPE REF TO cl_salv_columns_table.
DATA col1  TYPE REF TO cl_salv_column_table.
DATA ddic  TYPE salv_s_ddic_reference.
cl_salv_table=>factory(
IMPORTING
  r_salv_table = alv
CHANGING
  t_table      = itab ).
col1 ?= cols->get_column( ‘MY_COLUMN’ ).
ddic = col1->get_ddic_reference( ).

ddic-table returns blanks. Any ideas? Running 7.50

TIA,

Luis

[Sandra_Rossi]

By the way, why do you need to know the table name of the components of your ALV internal table?

[Sandra_Rossi · Accepted solution]

No issue for me.

Minimum reproducible example:

REPORT ztest.
DATA table_sflight TYPE TABLE OF sflight.

SELECT * FROM sflight INTO TABLE @table_sflight.
CALL METHOD cl_salv_table=>factory
  IMPORTING
    r_salv_table = DATA(salv)
  CHANGING
    t_table      = table_sflight.
DATA(ddic_reference) = salv->get_columns( )->get_column( 'CARRID' )->get_ddic_reference( ).
ASSERT ddic_reference = VALUE salv_s_ddic_reference( field = 'CARRID'
                                                     table = 'SFLIGHT' ).

[luis_rod · Accepted solution]

Sandra. That's interesting. Your example works perfectly but, if my itab references an in-program type, it does not work.

REPORT ztest.

TYPES:
  BEGIN OF ty_itab,
    zuonr      TYPE vbrk-zuonr,
    vbrk_vbeln TYPE vbrk-vbeln,
  END OF ty_itab.

DATA itab TYPE TABLE OF ty_itab.

cl_salv_table=>factory(
  IMPORTING
    r_salv_table = DATA(salv)
    CHANGING
    t_table      = itab ).

DATA(ddic_reference) = salv->get_columns( )->get_column( 'ZUONR' )->get_ddic_reference( ).

[Sandra_Rossi · Accepted solution]

OK. It has always worked like that, SALV cannot "deduce" due to a limitation in RTTS. You need to set the DDIC reference yourself (hardcoding).