[How-to] Evaluate dynamically an ABAP Constant

[laurent_chavanis]

Hello,

Do you know how I can dynamically/programatically retrieve the value of a defined constant in an ABAP Class having the name of the Constant.

I tried using the CLASSDESCR of the class to retrieve all attributes of type "constant", but I am not able to get the constant-value.

Thanks for your help,

Laurent

[Former Member]

Hi

You can use the field-symbol, have you tried to give a look to the help?

Max

[naimesh_patel]

You can simply move the constant to get the value (or am I missing something?)

CONSTANTS: c_test TYPE char5 VALUE 'TEST'.
data: lv_temp type string.
write: / c_Test.
lv_temp = c_test.
write: / lv_temp.

Little more fancy way:

CONSTANTS: c_test TYPE char5 VALUE 'TEST'.
DATA: lo_data TYPE REF TO data.
GET REFERENCE OF c_test INTO lo_data.
FIELD-SYMBOLS: <lfs_test> TYPE ANY.

ASSIGN lo_data->* TO <lfs_test>.
WRITE: / c_test.
WRITE: / <lfs_test>.

Regards,

Naimesh Patel

[rajesh_paruchuru]

Hello,
> 
> Do you know how I can dynamically/programatically retrieve the value of a defined constant in an ABAP Class having the name of the Constant.
> 
> I tried using the CLASSDESCR of the class to retrieve all attributes of type "constant", but I am not able to get the constant-value.
> 
> Thanks for your help,
> Laurent

Seems you are trying to do something like this, not sure though

DATA:
  lv_const_name TYPE char30 VALUE 'ALIGN_AT_BOTTOM'.

FIELD-SYMBOLS:
 <fs_cons_value> TYPE ANY.

ASSIGN cl_gui_calendar=>(lv_const_name) TO <fs_cons_value>.
IF sy-subrc IS INITIAL.
  WRITE :<fs_cons_value>.
ENDIF.

You can only access constants defined as 'Public' using the above technique.

-Rajesh.