Declaring a variable of a type stored in a string variable

[Former Member]

Hi Gurus,

my need is to declare a variabile of a type stored in another string variable. Eg:

DATA: my_type(50) TYPE C.

my_type = 'MATNR'.

Now I want to declare another variable my_var of type MATNR (I fill the variable my_type at runtime)

Any ideas?

Thank you

Francesco

[Former Member]

You can dynamically create data using data reference.

data dyn_field type ref to data.

DATA: my_type TYPE string.

my_type = 'MATNR'.

create data dyn_field type (my_type).

You then access it using field symbols.

Check resources on dynamic data declarations, you will find plenty of them.

[Former Member]

Answer by Susmitha is the way to do it. Further part of accessing it using field symbols is described below :

Creating variable dynamically :

DATA      my_var      TYPE REF TO      DATA.

CREATE DATA   my_var     TYPE     (my_type).

Accessing the dynamically created variable :

FIELD-SYMBOLS     <fs_my_var>     TYPE     (my_type). "(or u can use TYPE ANY)

ASSIGN     my_var->*     TO     <fs_my_var>.

Assigning values :

<fs_my_var> = xyz-matnr.

WRITE     <fs_my_var>.

Regards,

Ashish

[Former Member]

Thank you very much, now an additional question: I need to declare a type like this:

TYPES:
   BEGIN OF gt_s_data2,
     my_var
     FIELD1 TYPE c,
     FIELD2 TYPE c,
   END OF gt_s_data2.

where "my_var" is the variable dinamically declared before. How can I achieve this?

Thank you

Francesco

[Former Member]

For that, create a dynamic internal table.

First create the structure and then the table.

Check this doc for reference.

[Former Member]

Hi Francesco,

There is a function module for that that should always be used:

CONVERSION_EXIT_MATN1_INPUT

That domain MATNR, as several others, has a conversion rule, namely MATN1. All fields with a conversion rule when read from a char like field should be converted to SAP internal format using funtion CONVERSION_EXIT_xxxxx_INPUT.

I guess this is not the point, so my suggestion to create your dynamic variable is to do the following:

DATA: l_type(30),

       l_text(10) VALUE '123'.

DATA: BEGIN OF ls_data,

         lr_field TYPE REF TO data,

         field1 TYPE c,

         field2 TYPE c,

       END OF ls_data.

FIELD-SYMBOLS <l_field> TYPE any.

l_type = 'MATNR'.

CREATE DATA ls_data-lr_field TYPE (l_type).

ASSIGN ls_data-lr_field->* TO <l_field>.

<l_field> = l_text.

you could use the create structure only part suggested by Susmitha, but if you're not displaying this data it might not be necessary.

regards,

Edgar