length specification

[Former Member]

Is there any way to get the length specified for an element.

say if i declare a variable in a global structure

data m type c length 3.

is there any way for me to prgramtically retrieve this length.

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Message was edited by: Thomas Zloch

[VitorBrevilieri]

You have to use RTTI.

ABAP gives you classes to handle it.

Try the following code:

=====================================

REPORT  ZVUB_RTTI_02.

DATA: my_var TYPE c LENGTH 15.

DATA: lr_descr TYPE REF TO CL_ABAP_TYPEDESCR.
DATA: li_length TYPE I.
CALL METHOD cl_abap_typedescr=>describe_by_data
   EXPORTING
     p_data      = my_var
   receiving
     p_descr_ref = lr_descr.
li_length = lr_descr->LENGTH.
 
WRITE: 'My Var length is ', li_length.

=====================================

This is it!

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