topic dynamic FM call in Application Development and Automation Discussions

dynamic FM call

Former Member — Wed, 28 Feb 2007 10:23:19 GMT

Hello,

Is there a way to call dynamically a FM? I can get on run-time the FM name, but what about the export&import parameters? How do you handle that? An example would be very usefull.

Thank you!

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:25:56 GMT

HI George,

Even if you get the function module name at the run time, a function module with that name will still be statically defined in se37.

You can see that in the se37 transaction and find the parameters for the same.

then you can simple use those exporting and importing parameters.

call function v_fm_name

exporting

field1 =

importing fiel2 = ..

Regards,

Ravi

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:27:01 GMT

U can only manage the name of the fm dynamically, but not the interface.

So you can only manage several fms with the same interface:

DATA: FUNCTION_NAME(30) TYPE C.

IF ......
  FUNCTION_NAME = 
ELSE
  FUNCTION_NAME =
ENDIF.


CALL FUNCTION FUNCTION_NAME
   EXPORTING
      ....................   
   IMPORTING
      .....................

Max

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:27:50 GMT

Hi George,

You can write Case Statement or condition u can branch to the required FM.

Darshan

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:28:04 GMT

i think it is not possible.

but you can do like this

if fmnae = 'ABC'.

call fn 'ABC'.

elsif fmname = 'DEF'.

call fm 'DEF'.

endif.

like that.

regards

shiba dutta

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:46:54 GMT

Let's say that I have the FM names and parameters in a configuration table. Depending on a selection screen parameter, I must select the proper FM name and parameters and call the FM. The number of parameter differs from one FM to another. So, how can I call the FM?

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:50:28 GMT

Hi George,

I think you can use a recording over the transation se 37 and place the function modules name that you have dynamically retrieved there in the func. module name field and then press the run button , in this next screen place the input parameters and then capture the required output value.

Regards,

Sunmit.

Re: dynamic FM call

Former Member — Wed, 28 Feb 2007 10:50:35 GMT

Hi!

lv_function = 'function1'.

fill itab_para with parameters for dynamic parameters

CALL FUNCTION lv_function

PARAMETER-TABLE itab_para.

Example from ABAP help:

type-pools ABAP.

data NAME type STRING value `ABAP_DOCU_SHOW`.

data PARA_TAB type ABAP_FUNC_PARMBIND_TAB.

data PARA_LINE like line of PARA_TAB.

data AREA(4) type C.

data OBJECT(30) type C.

AREA = 'ABAP'.

PARA_LINE-NAME = 'AREA'.

PARA_LINE-KIND = ABAP_FUNC_EXPORTING.

get reference of AREA into PARA_LINE-VALUE.

append PARA_LINE to PARA_TAB.

OBJECT = 'CLASS'.

PARA_LINE-NAME = 'NAME'.

PARA_LINE-KIND = ABAP_FUNC_EXPORTING.

get reference of OBJECT into PARA_LINE-VALUE.

append PARA_LINE to PARA_TAB.

call function NAME

parameter-table PARA_TAB.

Regards

Tamá