topic Re: Internal Table Structure in Application Development and Automation Discussions

Internal Table Structure

Former Member — Sat, 26 Nov 2005 04:44:44 GMT

i have an internal table itab with fields

f1(20) type c,

f2 type p,

f3 type p decimals 2,

f4 like mseg-matnr,

f5 like makt-maktx.

can i know the structure and dat type of the firleds at run time of an internal table..... like what we get thru FM <b>DDIF_FIELDINFO_GET</b>

Abhishek suppal

Re: Internal Table Structure

Former Member — Sat, 26 Nov 2005 04:52:28 GMT

Hi Abhishek,

1. This can be done using Class/Object.

2. The required class (SE24) is

CL_ABAP_structDESCR.

3. Sample Program : (Just copy and paste)

REPORT typedescr_test.

*------- Variables

data : det type ref to CL_ABAP_structDESCR.

data : wa like line of det->components.

*------ Internal Table

DATA : BEGIN OF ITAB OCCURS 0,

MANDT TYPE T001-MANDT, "--- type

PERNR LIKE P0001-PERNR, " --- like

MATNR TYPE MARA-MATNR, "--- type

EBELN LIKE EKKO-EBELN, "--- like

END OF ITAB.

*----

Start of selection

START-OF-SELECTION.

det ?= cl_abap_typedescr=>describe_by_DATA( ITAB ).

loop at det->components into wa.

write 😕 wa-name , wa-type_kind , wa-length.

endloop.

*----

Number Of columns

describe table det->components.

write /: sy-tfill.

*----

hope the above helps.

Regards,

Amit M.

Re: Internal Table Structure

Former Member — Sat, 26 Nov 2005 04:53:56 GMT

Abhishek,

You can use the methods of the class CL_ABAP_DATADESCR. The method is GET_DATA_TYPE_KIND.

Regards,

Ravi

Note : Please reward points if the posts are helpful.

Re: Internal Table Structure

Former Member — Sat, 26 Nov 2005 05:18:34 GMT

hi, except the CL_ABAP_XXXX class, you can also try this way:


DATA:BEGIN OF IT_TEST OCCURS 0,
      F1(20) TYPE C,
      F2 TYPE P,
      F3 TYPE P DECIMALS 2,
      F4 LIKE MSEG-MATNR,
      F5 LIKE MAKT-MAKTX,
END OF IT_TEST.
DATA: IT_RSTRUCINFO  TYPE STANDARD TABLE OF RSTRUCINFO.

CALL FUNCTION 'GET_COMPONENT_LIST'
     EXPORTING
          PROGRAM    = 'XXXX'   " your application name
          FIELDNAME  = 'IT_TEST'
     TABLES
          COMPONENTS = IT_RSTRUCINFO.

The internal table definition info will be restored in IT_RSTRUCINFO.

Hope it will be helpful

thanks

Re: Internal Table Structure

Former Member — Sat, 26 Nov 2005 06:34:17 GMT

Abhishek,

Simple way is to use DESCRIBE statement.

This will solve your problem.

Regards,

Amey

Re: Internal Table Structure

Former Member — Sat, 26 Nov 2005 08:25:59 GMT

thanx zhenglin gu

Points given

Abhishek Suppal