Re: Field symbols in Assistant Class ?

Hi Murali Ram,

For your example, you just need to create a method in assistance class and call it inside Webdynpro view.

Create method GET_FLIGHT_DATA( ) in assistance class

Parameters:   it_carrid TYPE ref to DATA ( Importing Parameter )

                      rt_result TYPE FLIGHTTAB ( Returning Parameter )

   

 

     logic:

          field-symbols: <ft_carrid> type table.

 

             assign it_carrid->* to <ft_carrid>.

             if <ft_carrid> is not assigned. " check if carried is assigned

               return.

             endif.

        

SELECT * INTO TABLE rt_result FROM SFLIGHT
  WHERE CARRID IN <FT_CARRID>.

Now call the assistance class method inside WD as below

DATA: NODE_FLIGHTS TYPE REF TO IF_WD_CONTEXT_NODE.
  DATA: RT_CARRID TYPE REF TO DATA.
  DATA: ISFLIGHT TYPE TABLE OF SFLIGHT.
  DATA: WSFLIGHT TYPE SFLIGHT.

* Retrieve the data from the select option

  RT_CARRID = WD_THIS->M_HANDLER->GET_RANGE_TABLE_OF_SEL_FIELD( I_ID = 'S_CARR_ID' ).

 

     CLEAR ISFLIGHT.

  ISFLIGHT = WD_ASSIST->GET_FLIGHT_DATA(

          EXPORTING IT_CARRID = RT_CARRID ).

  NODE_FLIGHTS = WD_CONTEXT->GET_CHILD_NODE( NAME = `FLIGHTS` ).
  NODE_FLIGHTS->BIND_ELEMENTS( ISFLIGHT ).

Here, we are passing select options as data reference and retrieving the result back.

Hope this helps you.

Regards,

Rama