topic Re: Analyse structure component dynamically in Application Development and Automation Discussions

Analyse structure component dynamically

Former Member — Wed, 23 Apr 2008 12:50:16 GMT

Hi all,

i'm in 4.6C version.

i would like create a FORM with a structure as a parameter and i would like to analyse the components of the structure and finally serialize all fields of the structure in a string.

My problem is that in my FORM i don't have the type of the structure, i can get it, but i can not access to the field of the structure, compiler tell me 'no type for the structure'.

For example:

data: l_data type p0045,

l_str type string.

PERFORM FILL_data changing l_data.

PERFORM serialize_struc using l_data changing l_str.

Can you help me please ?

Thanks

Re: Analyse structure component dynamically

Former Member — Wed, 23 Apr 2008 13:07:04 GMT

Good chance you need to pass it in a single line table.


DATA: l_data TYPE p0045,
      l_str TYPE string,
      it_data LIKE STANDARD TABLE OF l_data.

*
*
*
REFRESH it_data.
APPEND l_data TO it_data.

PERFORM fill_data TABLES it_data.

PERFORM serialize_struc TABLES it_data CHANGING l_str.
*&---------------------------------------------------------------------*
*&      Form  FILL_data
*&---------------------------------------------------------------------*
*      -->P_IT_DATA  text
*----------------------------------------------------------------------*
FORM fill_data TABLES   p_it_data STRUCTURE l_data.
  READ TABLE p_it_data INTO l_data INDEX 1.

*  Do you code here

ENDFORM.                    " FILL_data
*&---------------------------------------------------------------------*
*&      Form  serialize_struc
*&---------------------------------------------------------------------*
*      -->P_IT_DATA  text
*      <--P_L_STR  text
*----------------------------------------------------------------------*
FORM serialize_struc TABLES   p_it_data STRUCTURE l_data
                     CHANGING p_l_str.
  READ TABLE p_it_data INTO l_data INDEX 1.

*  Do you code here


ENDFORM.                    " serialize_struc

Re: Analyse structure component dynamically

Former Member — Wed, 23 Apr 2008 14:11:59 GMT

I don't think that, in ECC6 i succeeded my need, but in 4.6 it lacks instructions

Re: Analyse structure component dynamically

former_member435013 — Wed, 23 Apr 2008 14:42:16 GMT

Hi,

try this and on break have a look in l_fields_table:

REPORT test.

DATA:

struc TYPE mara,

l_oref_structure TYPE REF TO cl_abap_structdescr,

l_fields_table TYPE TABLE OF rfc_fields.

PERFORM form_with_unknown_struc USING struc.

&----

*& Form FORM_WITH_UNKNOWN_STRUC

&----

FORM form_with_unknown_struc USING struc.

DATA:

l_oref_structure TYPE REF TO cl_abap_structdescr,

l_fields_table TYPE TABLE OF rfc_fields.

l_oref_structure ?= cl_abap_typedescr=>describe_by_data( struc ).

PERFORM build_field_table TABLES l_fields_table

USING l_oref_structure.

BREAK-POINT.

ENDFORM. " FORM_WITH_UNKNOWN_STRUC

&----

*& Form build_field_table

&----

FORM build_field_table TABLES pc_tab_fields STRUCTURE rfc_fields

USING value(pi_oref_structure)

TYPE REF TO cl_abap_structdescr.

DATA l_tabname TYPE dd02l-tabname.

DATA l_component TYPE abap_compdescr.

DATA l_field TYPE rfc_fields.

DATA l_offset TYPE i.

SEARCH pi_oref_structure->absolute_name FOR '\TYPE='.

IF sy-subrc = 0.

sy-fdpos = sy-fdpos + STRLEN( '\TYPE=' ) .

l_tabname = pi_oref_structure->absolute_name+sy-fdpos.

ELSE.

l_tabname = 'UNKNOWN'.

ENDIF.

CLEAR l_offset.

l_field-tabname = l_tabname.

LOOP AT pi_oref_structure->components INTO l_component.

MOVE-CORRESPONDING l_component TO l_field.

l_field-fieldname = l_component-name.

l_field-exid = l_component-type_kind.

l_field-intlength = l_component-length.

l_field-position = sy-tabix.

l_field-offset = l_offset.

l_offset = l_offset + l_field-intlength.

APPEND l_field TO pc_tab_fields.

ENDLOOP.

ENDFORM. " BUILD_FIELD_TABLE

With kind regards

Walter Habich