Mapping BAPI-structure-field to its internal component

[Former Member]

Hello Guru,

I'm building a function builder that should transform any structure- or table-field to its corresponding component in the internal table.

e.g.

BAPI_MARA_GA-MATERIAL should be transformed in MATNR.

My priority is concentrated by BAPI_MATERIAL_GETALL.

I should MAP all the structure or table fields to their corresponding internal element.

e.g.

BAPI_MARA_GA should be mapped to MARA

BAPI_MARA_GA-MATERIAL should be mapped to MATNR.

Thanks for your help.

Regards,

Kais

[Former Member]

HI,

Try to use the class CL_ABAP_STRUCTDESCR and its methods.

Take a look at the example below :

REPORT  z_assign_comp.

*&   Dynamic Programming ! Usign Structure Descriptior Class.          *

DATA: BEGIN OF line OCCURS 0,
        col1 TYPE i,
        col2(10) TYPE c,
        col3 TYPE i,
      END OF line.

FIELD-SYMBOLS : <fs> TYPE ANY.

FIELD-SYMBOLS : <itab_line> TYPE ANY.


DATA : BEGIN OF t_comp OCCURS 0,
        comp(5) TYPE c,
       END OF t_comp.

DATA : l_struc TYPE REF TO cl_abap_structdescr.
DATA : l_typedesc TYPE REF TO cl_abap_typedescr.
DATA : lt_comp TYPE abap_compdescr_tab,
       w_comp LIKE LINE OF lt_comp.


line-col1 = 11.line-col2 = 'SAP'.line-col3 = 33.
APPEND line.

line-col1 = 44.line-col2 = 'P.I.'.line-col3 = 66.
APPEND line.

ASSIGN line TO <itab_line>.


*Call the static method of the structure descriptor describe_by_data
CALL METHOD cl_abap_structdescr=>describe_by_data
  EXPORTING
    p_data      = <itab_line>
  RECEIVING
    p_descr_ref = l_typedesc.

*The method returns a reference of  a type descriptor class therefore we
*need to Cast the type descriptor to a more specific class i.e
*Structure Descriptor.
l_struc ?= l_typedesc.

*Use the Attribute COMPONENTS of the structure Descriptor class to get
*the field names of the structure
lt_comp = l_struc->components.

LOOP AT line.

  WRITE 😕 'Row : ', sy-tabix.

  LOOP AT lt_comp INTO w_comp.

*   Using the ASSIGN component ,assigns a data object to a field symbol.

    ASSIGN COMPONENT w_comp-name OF STRUCTURE line TO <fs>.
    WRITE 😕 w_comp-name, ' ', <fs>.

  ENDLOOP.

ENDLOOP.

This might be a pointer to your requirement.

regards,

Advait