Create Dynamic Structure based on Field-Symbol

[former_member305388]

Hi Experts!!

I need to create a structure with dynamic structure included within.

I have a parameter on sel. screen in which we provide table name.

PARAMETERS: p_table TYPE tabname.

FIELD-SYMBOLS: <gt_data> TYPE ANY TABLE.

CREATE DATA gr_data TYPE TABLE OF (p_table).

ASSIGN gr_data-* TO <gt_data>.

Now I need a structure like below:

TYPES: BEGIN OF type_test,

struct TYPE <gt_data>, " dynamic structure based on table name entered on sel. screen

fld1 TYPE c,

fld2 TYPE n,

END OF type_test.

Can somebody suggest how to achieve this?

Your help is highly appreciated. Thanks a lot

[Former Member]

Hi,

You can achieve this with RTTS classes... mainly CL_ABAP_TYPEDESCR, CL_ABAP_STRUCDESCR & CL_ABAP_TABLEDESCR... There are a lot of examples on how to use them here or on the web.

Get back if you're still stuck

Kr,

Manu.

[kesavadas_thekkillath]

You can view this thread where our friend Marcin rocks ..

FIELD-SYMBOLS: <gt_data> TYPE ANY TABLE.
FIELD-SYMBOLS: <gs_wa> TYPE ANY.
data:wf_ref type ref to data.
DATA:i_comp TYPE cl_abap_structdescr=>component_table,
     i_tot_comp TYPE cl_abap_structdescr=>component_table.

CREATE DATA gr_data TYPE TABLE OF (p_table).
ASSIGN gr_data-* TO <gt_data>.
create data wf_ref like line of <gt_data>.
assign wf_ref->* to <gs_wa>.

*--Getting Compoents from existing type
  lf_struct ?= cl_abap_typedescr=>describe_by_name( '<GS_WA>' ).
  i_comp = lf_struct->get_components( ).
  APPEND LINES OF i_comp TO i_tot_comp.

The idea is Get all the field details available it to i_tot_comp, then append individual fields manually to

i_tot_comp as explained in the link and create a dynamic structure and table.

[rajeevgoswami1]

Hi ,

for wa add the following code

declare a field symbol

FIELD-SYMBOLS: <fs_itab_line> TYPE ANY.

*create one data refrence

data: obj_itab_line TYPE REF TO data.

*wa instance

CREATE DATA:obj_itab_line TYPE (p_tab).

*assigne FS to wa instance

ASSIGN obj_itab_line->* TO <fs_itab_line>.

now this <fs_itab_line> will refer to wa of table which is entered in parameter.

I hope this will solve ur problem. if any issue please let me know..

Rajeev Goswami

[Former Member]

Try ...............

data: obj TYPE REF TO data.

PARAMETERS: p_table TYPE tabname.

CREATE DATA:obj TYPE (p_table).

TYPES: BEGIN OF type_test,

struct like obj,

fld1 TYPE c,

fld2 TYPE n,

END OF type_test.