topic Loop fields/components of structure in Application Development and Automation Discussions

Loop fields/components of structure

Former Member — Tue, 10 Jun 2008 09:51:36 GMT

Hi there,

I want to code something for "looping" through a structure, I mean that I get every field of a structure and its value.

Now I have it like this:



  DO.

    ADD 1 TO lv_comp_count.
    ASSIGN COMPONENT lv_comp_count OF STRUCTURE is_data TO <fs_comp>.
    IF sy-subrc NE 0.
      EXIT.
    ENDIF.

* ....

  ENDDO.

But here I have the problem that I don't know the name of the field in this coding. How can I code this similar so that I get both: value and name of the field??

Thanks!

Regards,

Markus

Re: Loop fields/components of structure

Former Member — Tue, 10 Jun 2008 10:18:26 GMT

Hi,

perhaps the following funtion module will help you :

CALL FUNCTION 'GET_COMPONENT_LIST'

EXPORTING

program = sy-repid

fieldname = <name_of_you_struture>

TABLES

components = lt_components.

Regards.

David

Re: Loop fields/components of structure

Former Member — Tue, 10 Jun 2008 10:32:40 GMT

And one hard-code for example

  DATA: COMP LIKE  RSTRUCINFO OCCURS 0 WITH HEADER LINE.
  CALL 'AB_STRUC_INFO'
    ID 'PROGRAM'   FIELD SY-REPID
    ID 'STRUCNAME' FIELD 'structure name'
    ID 'STRUCINFO' FIELD COMP-*SYS*.
  LOOP AT COMP.
    ...
  ENDLOOP.

Return table with fields of internal structure in program.

Good luck.

Re: Loop fields/components of structure

former_member715866 — Fri, 25 Sep 2020 20:26:49 GMT

Hana dynamic implementation:

FIELD-SYMBOLS: <lv_field> type any.
data: lr_descr_struc TYPE REF TO data.
data: lo_structdescr TYPE REF TO cl_abap_structdescr.

CLEAR: lr_descr_struc, lo_structdescr.
CREATE DATA lr_descr_struc like ch_service_datax. " <- any type
lo_structdescr ?= cl_abap_structdescr=>describe_by_data_ref( p_data_ref = lr_descr_struc ).
LOOP AT lo_structdescr->components ASSIGNING FIELD-SYMBOL(<lv_component>).
if <lv_component>-name(1) eq 'Z'.
ASSIGN COMPONENT <lv_component>-name of STRUCTURE ch_service_datax to <lv_field>.
if <lv_field> is ASSIGNED.
<lv_field> = abap_true.
endif.
endif.
ENDLOOP.