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Create a Dynamic Internal Table?



 
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Joined: 01 Sep 2007
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PostPosted: Sun Dec 16, 2007 7:59 pm    Post subject: Create a Dynamic Internal Table? Reply with quote
Code:

TYPE-POOLS : abap.
field-symbols: <dyn_table> type standard table,
                     <dyn_wa>,
                     <dyn_field>.
data: dy_table type ref to data,
        dy_line  type ref to data,
        xfc type lvc_s_fcat,
        ifc type lvc_t_fcat.

selection-screen begin of block b1 with frame.
parameters: p_table(30) type c default 'T001'.
selection-screen end of block b1.

start-of-selection.
  perform get_structure.
  perform create_dynamic_itab.  "Creates a dyanamic internal table
  perform get_data.
  perform write_out.

FORM get_structure.
  data : idetails type abap_compdescr_tab,
           xdetails type abap_compdescr.
  data : ref_table_des type ref to cl_abap_structdescr.
  * Get the structure of the table.
  ref_table_des ?= 
      cl_abap_typedescr=>describe_by_name( p_table ).
  idetails[] = ref_table_des->components[].
  loop at idetails into xdetails.
    clear xfc.
    xfc-fieldname = xdetails-name .
    xfc-datatype = xdetails-type_kind.
    xfc-inttype = xdetails-type_kind.
    xfc-intlen = xdetails-length.
    xfc-decimals = xdetails-decimals.
    append xfc to ifc.
  endloop.
ENDFORM.

FORM create_dynamic_itab.
* Create dynamic internal table and assign to FS
  call method cl_alv_table_create=>create_dynamic_table
               exporting
                  it_fieldcatalog = ifc
               importing
                  ep_table        = dy_table.
  assign dy_table->* to <dyn_table>.
* Create dynamic work area and assign to FS
  create data dy_line like line of <dyn_table>.
  assign dy_line->* to <dyn_wa>.
ENDFORM.
   
FORM get_data.
* Select Data from table.
  select * into table <dyn_table>
             from (p_table).
ENDFORM.

FORM write_out.
*  Write out data from table.
  loop at <dyn_table> into <dyn_wa>.
    do.
       assign component  sy-index   
         of structure <dyn_wa> to <dyn_field>.
       if sy-subrc <> 0.
         exit.
       endif.
       if sy-index = 1.
         write:/ <dyn_field>.
       else.
         write: <dyn_field>.
       endif.
    enddo.
  endloop.
ENDFORM.
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