topic Re: Dynamic method in Application Development and Automation Discussions

Dynamic method

Former Member — Tue, 04 May 2010 09:41:21 GMT

Hi SAP Gurus,

Is it is possible to pass the name of method during run time, actually I have 10 methods with same import, export

I need to make one single report which will get the name of method during run time.

CALL METHOD detail->CONTACT_DATA_OUT "this name should be changed during run time.

EXPORTING

output = req.

Thanks,

Krishna

Re: Dynamic method

Former Member — Tue, 04 May 2010 09:44:13 GMT

try this w_method = 'detail->CONTACT_DATA_OUT'.

assign <fs_1> to w_method.

call <fs_1>

exporting

importing

Re: Dynamic method

SuhaSaha — Tue, 04 May 2010 09:47:58 GMT


> try  this w_method = 'detail->CONTACT_DATA_OUT'. 
> 
> assign  <fs_1> to  w_method. 
> 
> call  <fs_1>
> exporting 
> importing

Why do you need the ASSIGN statement ?

You can :

w_method = `detail->CONTACT_DATA_OUT`.

call method w_method
exporting  ... 
importing ...

Re: Dynamic method

Former Member — Tue, 04 May 2010 10:10:08 GMT

Hi,

I have done that before, but the same error is coming.

The syntax for a method specification is "objref->method" or

"class=>method". "class=>method". "class=>method". "class=>method".

Thanks,

Krishna

Re: Dynamic method

MarcinPciak — Tue, 04 May 2010 10:10:32 GMT

To check if method exists:


DATA: r_classdescr TYPE REF TO cl_abap_classdescr.
 
r_classdescr ?= cl_abap_typedescr=>describe_by_data( detail ).
READ TABLE r_classdescr->methods WITH KEY name = 'METHOD_NAME' TRANSPORTING NO FIELDS.
IF sy-subrc = 0.
  WRITE: 'Method', pa_meth, 'exists'.
ELSE.
  WRITE: 'Method', pa_meth, 'doesn''t exist'.
ENDIF

To dynamicaly call a method


call method detail->('METHOD_NAME').

Regards

Marcin

Re: Dynamic method

SuhaSaha — Tue, 04 May 2010 10:24:07 GMT

My bad ... I should have checked before proposing, anyways i think Marcin has provided you the best solution.

Re: Dynamic method

Former Member — Tue, 04 May 2010 10:54:39 GMT

Hi,

Thanks for your suggestion...

Its giving a dumb as METHOD_NAME not in class.

call method detail->('METHOD_NAME').

Thanks,

Krishna

Re: Dynamic method

MarcinPciak — Tue, 04 May 2010 11:09:28 GMT

Sorry for ridiculous question, but did you pass your method name or just used that one literally : 'METHOD_NAME' ?

Refer this snippet:


PARAMETERS pa_meth(61) TYPE c.


CLASS lcl_test DEFINITION.
  PUBLIC SECTION.
    METHODS: start, end.
ENDCLASS.              


CLASS lcl_test IMPLEMENTATION.
  METHOD start.
    WRITE: 'This is the START method called dynamically'.
  ENDMETHOD.                    "start

  METHOD end.
    WRITE: 'This is the END method called dynamically'.
  ENDMETHOD.                    "end
ENDCLASS.                 

START-OF-SELECTION.
  DATA: r_test TYPE REF TO lcl_test,
       r_classdescr TYPE REF TO cl_abap_classdescr.

  r_classdescr ?= cl_abap_typedescr=>describe_by_name( 'LCL_TEST' ).
  READ TABLE r_classdescr->methods WITH KEY name = pa_meth TRANSPORTING NO FIELDS.
  IF sy-subrc <> 0.
    WRITE: 'Method', pa_meth, 'doesn''t exist'.
  ELSE.
    CREATE OBJECT r_test.
    CALL METHOD r_test->(pa_meth).
  ENDIF.

Regards

Marcin

Re: Dynamic method

Former Member — Tue, 16 Aug 2011 12:50:32 GMT

Hi,

CALL METHOD detail->(Method_NAME) "Method name

EXPORTING

output = req.

Thanks,

Krishna