topic Re: Using a dynamic variable in the Import command of a Method call in Application Development and Automation Discussions

Using a dynamic variable in the Import command of a Method call

Former Member — Thu, 23 Feb 2012 15:28:58 GMT

Hi,

I am trying to make a Method call fully dynamic.

I have found out how to make the Method name dynamic, but I am having trouble figuring out how to make the Importing statement dynamic.

in my code below:

CALL METHOD o_main->(v_call)

IMPORTING

it_ekko = i_ekko.

I would like to know if it's possible to make both "it_ekko" AND "i_ekko" dynamic so I can use this same call for various tables.

Hope that makes sense...thanks for your help.

Andy

Re: Using a dynamic variable in the Import command of a Method call

Former Member — Thu, 23 Feb 2012 15:34:07 GMT

Hi,

An idea: Instead of a typed parameter you could use a data reference (type ref to data) and dereference it within the method...

Kr,

Manu.

Re: Using a dynamic variable in the Import command of a Method call

valentin_catalin2 — Thu, 23 Feb 2012 16:12:00 GMT

Hi Andrew,

The method call is fully dynamic; not only the parameters can be specified dynamically but also the method name.

This is a help extract:

DATA: line     TYPE c LENGTH 80, 
      text_tab LIKE STANDARD TABLE OF line, 
      filename TYPE string, 
      filetype TYPE c LENGTH 10, 
      fleng    TYPE i. 

DATA: meth  TYPE string, 
      class TYPE string, 
      ptab TYPE abap_parmbind_tab, 
      ptab_line TYPE abap_parmbind, 
      etab TYPE abap_excpbind_tab, 
      etab_line TYPE abap_excpbind. 

DATA: exc_ref TYPE REF TO cx_sy_dyn_call_error, 
      exc_text TYPE string. 

class    = 'CL_GUI_FRONTEND_SERVICES'. 
meth     = 'GUI_DOWNLOAD'. 
filename = 'c:\temp\text.txt'. 
filetype = 'ASC'. 

ptab_line-name = 'FILENAME'. 
ptab_line-kind = cl_abap_objectdescr=>exporting. 
GET REFERENCE OF filename INTO ptab_line-value. 
INSERT ptab_line INTO TABLE ptab. 

ptab_line-name = 'FILETYPE'. 
ptab_line-kind = cl_abap_objectdescr=>exporting. 
GET REFERENCE OF filetype INTO ptab_line-value. 
INSERT ptab_line INTO TABLE ptab. 

ptab_line-name = 'DATA_TAB'. 
ptab_line-kind = cl_abap_objectdescr=>changing. 
GET REFERENCE OF text_tab INTO ptab_line-value. 
INSERT ptab_line INTO TABLE ptab. 

ptab_line-name = 'FILELENGTH'. 
ptab_line-kind = cl_abap_objectdescr=>importing. 
GET REFERENCE OF fleng INTO ptab_line-value. 
INSERT ptab_line INTO TABLE ptab. 

etab_line-name = 'OTHERS'. 
etab_line-value = 4. 
INSERT etab_line INTO TABLE etab. 

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.

BR,

Valentin

Re: Using a dynamic variable in the Import command of a Method call

naimesh_patel — Thu, 23 Feb 2012 16:27:15 GMT

You can use the PARAMETER-TABLE. Check out this.



*
CLASS lcl_data DEFINITION.
  PUBLIC SECTION.
    METHODS: do_something IMPORTING iv_1 TYPE i
                          RETURNING value(rv_val) TYPE i.
ENDCLASS.                    "lcl_data DEFINITION
*
START-OF-SELECTION.
  DATA: o_data TYPE REF TO lcl_data.
  DATA: lv_1 TYPE i VALUE 10.
  DATA: lv_out TYPE i.

  CREATE OBJECT o_data.

  DATA: v_method TYPE string.
  DATA: ptab TYPE abap_parmbind_tab.
  DATA: lwa_tab LIKE LINE OF ptab.
  DATA: lo_data TYPE REF TO data.
  DATA: lo_out  TYPE REF TO data.
  lwa_tab-name = 'IV_1'.
  lwa_tab-kind = cl_abap_objectdescr=>exporting.
  GET REFERENCE OF lv_1 INTO lo_data.
  lwa_tab-value = lo_data.
  INSERT lwa_tab INTO TABLE ptab.
*  append lwa_tab in table  ptab.

  lwa_tab-name = 'RV_VAL'.
  lwa_tab-kind = cl_abap_objectdescr=>returning.
  GET REFERENCE OF lv_out INTO lo_out.
  lwa_tab-value = lo_out.
  INSERT lwa_tab INTO TABLE ptab.

  TRY.
      v_method = 'DO_SOMETHING'.
      CALL METHOD o_data->(v_method)
        PARAMETER-TABLE
          ptab.
    CATCH cx_root.
  ENDTRY.

  WRITE: lv_out.

*
CLASS lcl_data IMPLEMENTATION.
  METHOD do_something.
    rv_val = iv_1 * 12.
  ENDMETHOD.                    "do_something
ENDCLASS.                    "lcl_data IMPLEMENTATION

Regards,

Naimesh Patel

Re: Using a dynamic variable in the Import command of a Method call

Former Member — Thu, 23 Feb 2012 18:07:18 GMT

Naimesh Patel,

I have tried your suggestion and I can understand most of it, but I still don't have it working correctly.

I am getting an dump with the error message:

When dynamically calling the method "GET_EKKO" of the class "ZCL_ME007I", the

parameter "IT_EKKO" was transferred with the incorrect parameter type.

Can you help me with this?

Thanks,

Andy

Re: Using a dynamic variable in the Import command of a Method call

naimesh_patel — Thu, 23 Feb 2012 19:27:43 GMT

You need to use the Importing type as your parameter is importing.


* CALL METHOD o_main->(v_call)
* IMPORTING
* it_ekko = i_ekko.

  lwa_tab-name = 'IT_EKKO'.
  lwa_tab-kind = cl_abap_objectdescr=>importing   "<<.
  get REFERENCE OF i_ekko into lo_Data.
  lwa_tab-value = lo_data.
  INSERT lwa_tab into table ptab.
..

Regards,

Naimesh Patel

Re: Using a dynamic variable in the Import command of a Method call

Former Member — Fri, 24 Feb 2012 11:31:27 GMT

Ahhh...perfect...that did it. Thanks!!!