Reading TXT file to SAP table.

Question

Hi everyone,
my task is to read data from chosen text file into table I created.
Text file look like this:
ID_ASK|DATA_OD|DATA_DO|
1234|20140517|20140824|
ID_MAG|ID_ASO|ID_KAT_ASO|SOURCE|NAME|
12|23|34|600156|TEST NAME1|
ID_MAG|ID_ASO|ID_KAT_ASO|SOURCE|NAME|
23|24|54|600156|TEST_NUMR2|
Header "ID_ASK|DATA_OD|DATA_DO|" occurs only once, while header "ID_MAG|ID_ASO|ID_KAT_ASO|SOURCE|NAME|" can occur many times.
I want to insert those values (except of headers, of course) into my SAP table:
Table Fields
Fields from file
ZIDASK
ID_ASK
ZIDMAG
ID_MAG
ZIDASO
ID_ASO
ZIDKAT
ID_KAT_ASO
ZZRCEL
SOURCE
ZDAOD
DATA_OD
ZDADO
DATA_DO
ZKATNAM
NAME
I want user to choose file from browser and I am using F4_FILENAME function.
1. To avoid reading header into table I think I'll use something like this (in loop, of course):
    IF (lv_linecounter MOD 2) = 1.
          CONTINUE.
    ELSE.
          SPLIT something AT '|' INTO those_fields.
2. What should be next function to call?
3. Is declaring separate types for those two headers a good idea?
TYPES: BEGIN OF ty_output_hdr,
   id_ask type zask-zidask,
   data_od TYPE zask-zdaod,
   data_do TYPE zask-zdado,
END OF ty_output_hdr.
TYPES: BEGIN OF ty_output_pos,
   id_mag TYPE zask-zidmag,
   id_aso TYPE zask-zidaso,
   id_kat_aso TYPE zask-zidkat,
   source TYPE zask-zzrcel,
   name TYPE zask-zkatnam,
END OF ty_output_pos.
With kind regards,
Bartlomiej

Answer 1

Hello Bartlomiej,
His logic for processing (item 1) is correct and you can do the processing in this way without any problems.
Regarding item 2, after the process of SPLIT, you can assign information to a structure and then insert the contents in the table individually.
SPLIT gs_line
    AT '|'
  INTO gv_fieldA
      gv_fieldB
      gv_fieldC.
gs_data-fieldA = gv_fieldA.
gs_data-fieldB = gv_fieldB.
gs_data-FieldC = gv_fieldC.
INSERT FROM ZTABLE gs_data.
Regarding item 3, a separate statement, however it manages more lines, is the best method that can be applied, allowing a subsequent maintenance will not affect other component.
Regarding F4_FILENAME object, you can use it on AT SELECTION-SCREEN event of report:
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file.
  CALL FUNCTION 'F4_FILENAME'
    EXPORTING
      program_name = syst-cprog
      dynpro_number = syst-dynnr
      field_name = '
    IMPORTING
      file_name = p_file.
Tks
Renato Bertizini