Difference between "me->" and "Call Function me->" ?

[Former Member]

Hi Experts,

I would like know if there are some differences between :

CALL METHOD me->myMethod
     EXPORTING
          field = value.

and

me->myMethod(
     EXPORTING 
          field = value
).

Performance ? Best pratices ? One of both obsolete ?

Many thx!

Rachid.

[tolga_polat]

Hi,

There is no difference me->method( ) is short version of call method. actualy you can write method( ) too,

But if you need to call your method dynamic you cant use shorted version you need to write call method. example from CALL METHOD help (F1)

TRY. 
    CALL METHOD (class)=>(meth) 
      PARAMETER-TABLE 
        ptab 
      EXCEPTION-TABLE 
        etab. 
    CASE sy-subrc. 
      WHEN 1. 
        ... 
      ... 
    ENDCASE. 
  CATCH cx_sy_dyn_call_error INTO exc_ref. 
    exc_text = exc_ref->get_text( ). 
    MESSAGE exc_text TYPE 'I'. 
ENDTRY.

and for static method call, CALL METHOD object=>static_method is obsolete.

Regards

[Former Member]

and for static method call, CALL METHOD object=>static_method is obsolete.

How do you newly call a Static Method ?

[tolga_polat]

Hi Rachid,

Just look at call method help you can see obsolete usage of call method.

here is the recommended way

  c1=>do_something(

    EXPORTING p1 = 333

                       p2 = 444

    IMPORTING p3 = result ).

[nishantbansal91]

HI Rachid,

There is one difference.

There are four type of parameter in Class while  defining the Parameter.

1. Importing

2.Exporting

3.Changing

4.Returning.

When you are using the statement call method you can't use the return parameter.

Return parameter means you need to hold that value in same type of the returning parameter. This can't be possible using the call method.

CALL METHOD me->myMethod

     EXPORTING

          field = value.

But in this statement it is possible.

Suppose your Method has one return parameter with name R_ITem with the Int2  and you must be hold the value of the parameter.

me->myMethod(

     EXPORTING

          field = value

).

Ebelp = me->mymethod( ).

Now the return value is automatically store in the ebelp Field.

Regards,

Nishant Bansal

[tolga_polat]

Actualy you can use for returning too.

CALL METHOD object->method

        RECEIVING

               return_param = lv_param.

But you cant use it like variable

for example.

IF object->is_exist( )  EQ 'X'.

* Do something.

ENDIF.

you cant use call method like this

[Former Member]

interesting! Thx you guys!