length (tabledescr,structdescr)

[Arslan1]

Hi, I was able to print the column headers and types, but I could not print the length parameter, can you help me? I am leaving the final version of the code below.

DATA(lr_tabledescr) = CAST cl_abap_tabledescr( cl_abap_typedescr=>describe_by_data( lt_analok ) ).
DATA(lr_structdescr) = CAST cl_abap_structdescr( lr_tabledescr->get_table_line_type( ) ).

DATA(sutun_basliklari) = VALUE fieldname_tab( FOR ls IN lr_structdescr->components ( ls-name ) ).
DATA(sutun_type) = VALUE fieldname_tab( FOR ls IN lr_structdescr->components ( ls-type_kind ) ).
data(leng) = VALUE fieldname_tab( FOR ls IN lr_structdescr->components ( ls-length ) ).

DATA index TYPE i.
index = 1.

LOOP AT sutun_basliklari INTO DATA(ls_st).
  WRITE: / index,   ' ' ,  ls_st, ' ' , sutun_type[ index ]  , ' '  .
  index = index + 1.
ENDLOOP.


cl_demo_output=>display( ).

[Sandra_Rossi]

Your internal table LENG contains the lengths of all components. Basically, it works. So what is your actual problem?

[Arslan1]

"LS-LENGTH" and the row type of "LENG" are incompatible. Can you help me get an error?

[Sandra_Rossi]

So, you have the error

"LS-LENGTH" and the row type of "LENG" are incompatible.

at this line:

data(leng) = VALUE fieldname_tab( FOR ls IN lr_structdescr->components ( ls-length ) ).

You have defined LENG of type FIELDNAME_TAB, so it's an internal table with all lines of type 30 characters, and you're trying to initialize each line with LS-LENGTH which is numeric.

So you have to CONVERT the number to string, it has been asked hundreds of times in the forum as I can see by searching

abap convert number to character site:sap.com

Now, I doubt that you want LENG to be an internal table of field names, you probably want it to be an internal table of integers, here is how to declare a complete table type which you can use to declare LENG:

TYPES ty_integers TYPE STANDARD TABLE OF i WITH EMPTY KEY.