to change variable defaulted values dynamically using field symbol

[Former Member]

Hi Team,

Suppose in my program, I have declared two variables and defaulted values there itself.

data:var_a  type c value 'X',

       var_b  type i value '102.

***********************************************

***********************************************

Now in the middle of program I want ot change the values based on what is present in data base .

In my datbase table the values are like this,

Parameter	Value
var_a	K
var_b	500

I have to fetch teh new values and change the variable var_a and var_b values , and those values are used in later part of my program.

After the change write:var_a, var_2. should print K and 500.

Can anybody help me with  a very small smaple program that does that.

Thanks,

Sourya Prakash.

[Former Member]

Hi Prakash

As you have not declared the variables as constants ,you can overwrite the values where ever you want 

just go for a select query on the table .

loop your internal table and overwrite the values .

[Former Member]

This sample should work for you.

Before running this code, I had created new entry in TVARVC table with TVARVC-NAME = 'VAR_A' and TVARVC-LOW = '54321'.

DATA: var_a TYPE string VALUE '12345',
      lv_varname TYPE string VALUE 'VAR_A'.
 
 FIELD-SYMBOLS <fs> TYPE any.
 
 WRITE:/ var_a.   "12345 value
 
 ASSIGN (lv_varname) TO <fs>.
 IF sy-subrc EQ 0.
   SELECT SINGLE low FROM tvarvc INTO <fs> WHERE name EQ lv_varname.
 ENDIF.
 
 WRITE:/ var_a.   "54321 value, stored in database table

[Former Member]

Excellent Manish !

It solved my problem.

[RaymondGiuseppi]

SELECT * FROM yourtable INTO TABLE aninternaltable.
 LOOP AT internaltable INTO wa.
   TRY.
       ASSIGN (wa-parameter) TO <fs>.
       <fs> = wa-value.
     CATCH cx_root.
   ENDTRY.
 ENDLOOP.

(But I'm really not sure to have understood your purpose ?)

Regards,

Raymond

[Former Member]

Hi Sourya Prakash,

What is the exact requirement? You want to pick up values of 2 fields and assign them to your local variables?

Regards,

Koushik

[Former Member]

Hi Chaudhury, you can try this

DATA: var_a TYPE c,

       var_b TYPE i VALUE '102',

       go_ref     TYPE REF TO cx_root,

      gt_ztable TYPE TABLE OF ztable,

      g_text     TYPE string.

FIELD-SYMBOLS: <fs_ztable> TYPE ztable.

                            <fs>            TYPE any.

START-OF-SELECTION.

* Assuming your table is called ZTABLE

SELECT *

  INTO TABLE gt_ztable

    FROM ztable.

LOOP AT gt_ztable ASSIGNING <fs_ztable>.

   ASSIGN (<fs_ztable>-parameter) TO <fs>.

  IF sy-subrc = 0.

     TRY.

       <fs> = <fs_ztable>-value.

    CATCH cx_root INTO go_ref.

      g_text = go_ref->get_text( ).

      WRITE g_text.

    ENDTRY.

  ENDIF.

ENDLOOP.

I hope this helps you

Regard

David Carballido

[Former Member]

Thank You David for teh response. It helps.