How to capture the data of the fields of a particular subform

Question

xfa.data.saveXML() saves the data of the whole form, but I need to capture the data of a particular subform  .. How do I do this...?

Answer 1

declare a character type internal table.
now move your data from it_data ( internal table with data ) into table itab.
since you are running this report in background, you cannot save it to the desktop. Instead give any app server location
data: itab(400) occurs 0 with header line.
field-symbols: <fs1> type any.
data: gv_file type rlgrap-filename default 'TEST.TXT'.
data: gv_filepath type rlgrap-filename default <path>.
LOOP AT it_data.
    DO 100 TIMES.
      ASSIGN COMPONENT sy-index OF STRUCTURE it_data TO <fs1>.
      IF sy-subrc = 0.
        CONCATENATE itab <fs1> INTO itab SEPARATED BY ' '.
      ELSE.
        EXIT.
      ENDIF.
    ENDDO.
    SHIFT itab LEFT DELETING LEADING ' '.
    APPEND itab.
    CLEAR itab.
  ENDLOOP.
  concatenate gv_filepath '/' gv_file into gv_file.
  OPEN DATASET gv_file FOR OUTPUT IN TEXT MODE ENCODING DEFAULT.
  IF sy-subrc = 0.
    LOOP AT itab.
      TRANSFER itab TO gv_file.
    ENDLOOP.
    CLOSE DATASET gv_file.
  ENDIF.