ALV Classic - How to extract the selection long text of TYPE LVC_T_FCAT?

Question

DATA: e_dyntab_tb  TYPE lvc_t_fcat,
          e_dyntab_wa TYPE lvc_s_fcat,
          t_line_reftab   TYPE REF   TO data.
*Populate ALV fiels of TYPE LVC_T_FCAT
MOVE: c_matnr      TO e_dyntab_wa-fieldname.
MOVE: c_material   TO e_dyntab_wa-scrtext_l.
APPEND e_dyntab_wa TO e_dyntab_tb.
LOOP AT t_hwk_date ASSIGNING <fs_hwk_date>. "t_hwk_date is DYNAMIC
    CONCATENATE c_hwk <fs_hwk_date>-index           INTO  e_dyntab_wa-fieldname.
    CONCATENATE c_hwk <fs_hwk_date>-calender_wk INTO  e_dyntab_wa-scrtext_l.
    APPEND e_dyntab_wa TO e_dyntab_tb.
ENDLOOP.
*Create dynamic itab from dynamic ALV output
CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog = e_dyntab_tb          "Pass alv_fcat here
    IMPORTING
      ep_table        = i_reftab.
* Create Dynamic Work Area and assign to FS
ASSIGN i_reftab->* TO <fs_final_itab>.      "Assigning the Final Table,
CREATE DATA t_line_reftab LIKE LINE OF <fs_final_itab>.
  ASSIGN t_line_reftab->* TO <fs_line_reftab>.  "Create a Work Area
QUESTION:
e_dyntab_wa-fieldname   = this is the fieldname / column heading for the dynamic internal table
e_dyntab_tb-scrtext_l     = this "should" be the 1st row(Column Heading Title) for the dynamic itab
                                    = this data will be used for MS Excel Functionality as always as the first row as
                                       column heading in the MS Excel
Legend:
How can I extract the entries of e_dyntab_tb-scrtext_l to an internal table containing the same structure of <fs_line_reftab>?

Answer 1

Maybe I missed something, but you already have the long text for the columns in your FCAT structure.  The problem you will have is that you will NOT be able to place those fields in the table that you have created because the headings will always be text and the columns may or may not be text (i.e. placing a heading into a numeric).  You will be required to use a different structure.
Since you are writing a custom export, you will need to do one of the following:
Option A:
1.  Retrieve the layout from the ALV as it will not necessarily be the same as when the original was created.  The user may have moved a column or hidden one.
2.  Create a structure for the export file that has only text fields.  It should contain all of the columns from the FCAT.  This can be done by creating another dynamic table and using the original FCAT and current layout.
3.  Insert the headings as the first row of the export file.
4.  Loop thru the internal table, compare it with the layout, and only insert the requested records into the export file.
5.  Export the file.
or Option B:
1.  Make sure the internal table has only text fields and insert the headings as the first record.
2.  Insert all other records with fields converted to alphanumeric.
3.  Use the standard export function.
Hope this helps,
Brian