Dynamic programming using cl_abap_typedescr

[IanStubbings]

I have created a field catalog for an ALV grid dynamically using cl_alv_table_create=>create_dynamic_table (I am on 46B and cannot use the new version). How do I create the structure and therefore internal table to pass into the it_outtab parameter of the ALV grid set_table_for_first_display

method? I can create a blank table with the correct dynamic columns but now wish to populate it without much success! I am retrieving the type using cl_abap_typedescr=>describe_by_data and can cycle through the key but how do I just obtain the structure?

Cheers

Ian

cl_abap_typedescr to retrieve the column names of a dynamic table I have created for using with an ALV grid

[Former Member]

Hi,

Use ASSIGN r_dyn_table->* TO <t_dyn_table> to get access to the dynamic table. To append rows to it, you should use ASSIGN COMPONENT idx/name OF STRUCTURE struc TO <fs>.

Example:

data: tab_fields like table of wa_fields,

r_dyn_table TYPE REF TO data,

r_wa_dyn_table TYPE REF TO data,

f_int type i.

CALL METHOD cl_alv_table_create=>create_dynamic_table

EXPORTING

it_fieldcatalog = F_TAB_FCAT

IMPORTING

ep_table = r_dyn_table

EXCEPTIONS

generate_subpool_dir_full = 1

OTHERS = 2.

ASSIGN r_dyn_table->* TO <t_dyn_table>.

CREATE DATA r_wa_dyn_table LIKE LINE OF <t_dyn_table>.

ASSIGN r_wa_dyn_table->* TO <wa_dyn_table>.

DESCRIBE TABLE tab_fields lines f_int.

do f_int times.

READ TABLE tab_fields INDEX sy-index into wa_fields.

ASSIGN wa_fields-field TO <w_field1>.

check1 = sy-subrc.

ASSIGN COMPONENT sy-index

OF STRUCTURE <wa_dyn_table> TO <w_field2>.

check2 = sy-subrc.

if check1 = 0 and check2 = 0.

<w_field2> = <w_field1>.

endif.

enddo.

Svetlin

[IanStubbings]

Thanks Svetlin, I had got down to the Assign component on my own but that gave me the final nudge.

Cheers

Ian