How do I call get_ddic_reference?

Question

Hi,
I am trying to call the get_ddic_reference method.  Here is my code:
  TRY.
      lr_column ?= lr_columns->get_column( columnname = 'CARRID' ).
    CATCH cx_salv_not_found .
  ENDTRY.
  lr_column->get_ddic_reference( ).
It runs, but does not do anything.  It seems obvious to me that there is nowhere to store the results of the "GET".  how do I format this instruction "lr_column->get_ddic_reference( )" so that I capture the returned value(s)?
Thank you!
Andy

Answer 1

I'm sorry...you are right.  I'm very new to this and still not relating everything correctly in my mind.
Let me restate this correctly (I'll take my time this time!):
I am creating my original ALV reference (gr_alv) from the following method call.
    TRY.
        cl_salv_table=>factory(
          EXPORTING
            list_display   = if_salv_c_bool_sap=>false
            container_name = 'my_control_area'
          IMPORTING
            r_salv_table   = gr_alv
          CHANGING
            t_table        = it_sflight
      CATCH cx_salv_msg INTO gr_error.
    ENDTRY.
From this reference (gr_alv), I create a reference to CL_SALV_COLUMNS_TABLE (lr_columns) as follows:  lr_columns = gr_alv->get_columns( ).
From lr_columns I am calling GET_COLUMNS which I thought was retruning a reference (lr_column) to CL_SALV_COLUMN_TABLE, but it might be returning a reference to CL_SALV_COLUMN.  Apparently these are to similar but slightly different classes.  I'm not sure which class I am getting a reference to in this situation.
My call looks like this:
  TRY.
      lr_column ?= lr_columns->get_column( columnname = 'CARRID' ).
    CATCH cx_salv_not_found .
  ENDTRY.
So in your prior post you reference class CL_SALV_COLUMN, but I am wondering if I am really working with an instance of CL_SALV_COLUMN_TABLE and if this is why your version works and mine does not.
Sorry for misstating this the first time...hope this makes sense, and above all, Thanks For Reading!!!
Andy