topic Declaring an internal table in Application Development and Automation Discussions

Declaring an internal table

Former Member — Tue, 10 Jul 2007 11:28:30 GMT

Hi All,

I have to declare an internal table referring to a standard structure, but excluding some fields in the structure.

For Example, note in the below declaration:

DATA: lv_dtab type p0002.

my requirement is that, lv_dtab should have the same structure as of p0002, but ommitting 2 or 3 fields. ..

i.e.if the structure p0002 has 20 fields of type 'c' and 10 fields of type 'p' , lv_dtab should be declared such a way that it has only 20 fields ( type 'c' fields only).

Is there a way to declare the lv_dtab , to match my requirement.

Or is there any other way to achieve this.

Thanks in Advance,

Vijay Raghavendra S

Re: Declaring an internal table

amit_khare — Tue, 10 Jul 2007 11:32:05 GMT

You have to specify each field individually.

Re: Declaring an internal table

seshatalpasai_madala — Tue, 10 Jul 2007 11:50:44 GMT

Hi,

This is technically not feasiable, but if you just want to ommit only 2 or 3 fields then you can as well use p0002 itself.

This will not cause much performance problem.

Regards,

Sesh

Re: Declaring an internal table

Former Member — Tue, 10 Jul 2007 12:11:53 GMT

Hi,

it is not possible to creation of iinternal table as per your requirement, you must go with creation of internal table manually.

while creating internal table, perfomance point of view you declare internal table with all the required fields in SE11 by using LINE TYPE and ROW TYPE.

LINE TYPE -

> behaves like work area

ROW TYPE-----> behaves like internal table body.

regards,

Ashok Reddy

Re: Declaring an internal table

uwe_schieferstein — Tue, 10 Jul 2007 12:54:01 GMT

Hello Vijay

Assuming that you have the <b>RTTI </b>classes available in your SAP system you can use the following sample coding. You may also have a look at thread:

*&---------------------------------------------------------------------*
*& Report  ZUS_SDN_RTTI_CREATE_ITAB
*&
*&---------------------------------------------------------------------*
*& NOTE: create specific itab based on given structure/table
*&
*&---------------------------------------------------------------------*

REPORT  zus_sdn_rtti_create_itab.


TYPE-POOLS: abap.




DATA:
  gd_tabnam        TYPE string,
  gd_tabfield      TYPE string,
  go_table         TYPE REF TO cl_salv_table,
  go_sdescr        TYPE REF TO cl_abap_structdescr,
  go_sdescr_new    TYPE REF TO cl_abap_structdescr,
  go_tdescr        TYPE REF TO cl_abap_tabledescr,
  go_typedescr     TYPE REF TO cl_abap_typedescr,
  gdo_handle       TYPE REF TO data,
  gs_component     TYPE abap_compdescr,
  gt_components    TYPE abap_compdescr_tab,
*
  gs_comp          TYPE abap_componentdescr,
  gt_comp          TYPE abap_component_tab.
*


FIELD-SYMBOLS:

  <gt_p0002x>        TYPE STANDARD TABLE.


PARAMETER:
  p_tabnam      TYPE tabname  DEFAULT 'P0002'.




START-OF-SELECTION.



  " Describe structure
  go_sdescr ?= cl_abap_structdescr=>describe_by_name( p_tabnam ).
  gt_components = go_sdescr->components.

  DELETE gt_components
      WHERE ( type_kind = cl_abap_typedescr=>typekind_packed
      OR      type_kind = cl_abap_typedescr=>typekind_hex
      OR      type_kind = cl_abap_typedescr=>typekind_float ).
  " OR:
  DELETE gt_components
      WHERE NOT ( type_kind = cl_abap_typedescr=>typekind_num  OR
                  type_kind = cl_abap_typedescr=>typekind_char OR
                  type_kind = cl_abap_typedescr=>typekind_date ).



  REFRESH: gt_comp.
  LOOP AT gt_components INTO gs_component.
    "   Build fieldname
    CONCATENATE p_tabnam gs_component-name INTO gd_tabfield
                                            SEPARATED BY '-'.

    CLEAR: gs_comp.
    gs_comp-type ?= cl_abap_datadescr=>describe_by_name( gd_tabfield ).
    gs_comp-name  = gs_component-name.
    APPEND gs_comp TO gt_comp.
  ENDLOOP.


  go_sdescr_new  = cl_abap_structdescr=>create( gt_comp ).
  go_tdescr      = cl_abap_tabledescr=>create( go_sdescr_new ).
  "   Create data refence followed by table creation
  CREATE DATA gdo_handle TYPE HANDLE go_tdescr.

  ASSIGN gdo_handle->* TO <gt_p0002x>.




* Dynamic select
  " P0002 -> PA0002
  CONCATENATE p_tabnam+0(1) 'A' p_tabnam+1 INTO gd_tabnam.
  CONDENSE gd_tabnam NO-GAPS.

  SELECT        * FROM  (gd_tabnam) UP TO 10 ROWS
    INTO CORRESPONDING FIELDS OF TABLE <gt_p0002x>.



  TRY.
      CALL METHOD cl_salv_table=>factory
        IMPORTING
          r_salv_table = go_table
        CHANGING
          t_table      = <gt_p0002x>.
      go_table->display( ).
    CATCH cx_salv_msg .
  ENDTRY.


  " Display component list in order to prove that indeed the field names
  " are used (instead of the data element names)
  TRY.
      CALL METHOD cl_salv_table=>factory
        IMPORTING
          r_salv_table = go_table
        CHANGING
          t_table      = gt_comp.
      go_table->display( ).
    CATCH cx_salv_msg .
  ENDTRY.


END-OF-SELECTION.

Regards

Uwe