build fieldcatalog semi-automatically

[Gothmog]

I am tryign to build a field catalog semi-automatically and keep getting a short dump. I've researched this method and its somewhat confusing.

Here is my code.

Code: Select all

~~~~~~~~~~~~~~~~~~~~~~~~~~~ this is where I store the data that is to be displayed in the ALV grid
Types:   Begin Of Gty_detail_total,
                      Dt_desc               Type C    Length 20,
                     End Of Gty_detail_total.
  Data: Gt_detail_total Type Table Of Gty_detail_total,
              Gs_detail_total Like Line Of Gt_detail_total.

Data: Go_container                Type Ref To Cl_gui_custom_container, " top grid
                   Go_alv_grid                  Type Ref To Cl_gui_alv_grid, "top grid
                    Sla                                   Type Lvc_s_layo,
                    Gt_fieldcat                     Type Lvc_t_fcat,  " Top grid
                    Gs_fieldcat                     Type Lvc_s_fcat,  " Top grid
                    Ls_fieldcat                       Type Lvc_s_fcat,  "Top grid
                    W_column_hdg              Type C Length 30,
                    W_column_hdg1             Type C Length 40,
                    W_column_hdg15            Type C Length 15,
                    W_current_screen            Type Sy-dynnr,
                    Lw_print                              Type Lvc_s_prnt.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~This is my logic to create the catalog

PERFORM x5100_build_fieldcat.

Form X5010_build_fieldcat .
gs_detail_total-dt_desc = 'DT_DESC'.
append gs_detail_total to gt_detail_total.

Call Function 'LVC_FIELDCATALOG_MERGE'
          EXPORTING
             i_structure_name   = 'GS_DETAIL_TOTAL'
           CHANGING
             ct_fieldcat                = gt_fieldcat2[]
           EXCEPTIONS
             inconsitant_interface = 1
             program_error             = 2
             OTHERS                          = 3.


Loop at gt_fieldcat2 into ls_fieldcat2.
   Case ls_fieldcat2-fieldname.
            WHEN 'Dt_DESC' .
               ls_fieldcat2-coltext = 'NewDt'.
               MODIFY GT_FIELDCAT2 FROM LS_FIELDCAT2.


   endcase.
   Endloop.
   Endform.

[Gothmog]

Telling us what the dump is and when it occurs may help...

[Jkeri]

'exception condition "NO_FIELDCATALOG_AVAILABLE" raised'

According the the debugger, its occuring during a call to the FUNCTION LVC_FIELDCATALOG_MERGE.


This program is a simple one . All I want to it to do is to generate the fieldcatalog for me and display one field in the ALV grid.

[quelquepart]

Hello,

the parameter i_structure_name is for DDIC structure.
instead, you must use program/table name parameters.

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