topic Re: Call method within a Method in Class Implementation in Application Development and Automation Discussions

Call method within a Method in Class Implementation

Former Member — Fri, 10 Mar 2006 14:17:50 GMT

HI,

I have a method in Class definition which gets triggered on the EVENT AFTER_USER_COMMAND.

I wish to call method (get_filtered_entries) within the above method.

Is that possible. ? I am new to OO programming.

For your refernec I have my code snippets attached.


[code]CLASS lcl_event_receiver DEFINITION .
PUBLIC:
METHODS:
        handle_user_command
            FOR EVENT after_user_command OF cl_gui_alv_grid
                IMPORTING e_ucomm e_not_processed.
ENDCLASS.                    "lcl_event_receiver

CLASS lcl_event_receiver IMPLEMENTATION.
  METHOD handle_user_command.

*    IF e_not_processed IS INITIAL.

    <b>  CALL METHOD cl_gui_alv_grid->get_filtered_entries                   
      IMPORTING
          et_filtered_entries = lt_entries.</b>

*    ENDIF.
  ENDMETHOD.                           "handle_user_command

ENDCLASS. "lcl_event_receiver IMPLEMENTATION

DATA: g_event_receiver TYPE REF TO lcl_event_receiver,
      g_grid_2000      TYPE REF TO lcl_method_call,
      g_grid_3000      TYPE REF TO lcl_method_call.

INITIALIZATION.
perform check_screen.

START-OF-SELECTION.
perform get_data

[/code]

The program dumps when it tries to call the method get_filtered_entries above.

Can you suggest where I am going wrong.

Regards

Re: Call method within a Method in Class Implementation

FredericGirod — Fri, 10 Mar 2006 14:19:42 GMT

Hi,

we don't see in the code where you have define the cl_gui_alv_grid and where you have create the grid object.

Rgd

Frédéric

Re: Call method within a Method in Class Implementation

Former Member — Fri, 10 Mar 2006 14:20:44 GMT

Hi Rajiv,

You should call method g_grid_2000->get_filtered_entries. (or g_grid_3000) depending on which grid you are actually using.

Regards,

John.

Re: Call method within a Method in Class Implementation

RichHeilman — Fri, 10 Mar 2006 14:25:48 GMT

You are not calling the method correctly. You need to call the method of the instance(object) of the class.



      CALL METHOD <b>grid_0002->get_filtered_entries</b>                   
      IMPORTING
          et_filtered_entries = lt_entries.

or use grid_0003, which ever grid you are working with at the time.

Regards,

RIch Heilman

Re: Call method within a Method in Class Implementation

RichHeilman — Fri, 10 Mar 2006 14:26:36 GMT

Does this event reciever support both grids, or just one of them?

Regards,

RIch Heilman

Re: Call method within a Method in Class Implementation

RichHeilman — Fri, 10 Mar 2006 14:27:36 GMT

What is lcl_method_call?

Regards,

Rich Heilman

Re: Call method within a Method in Class Implementation

Former Member — Fri, 10 Mar 2006 14:32:54 GMT

Hi All,

Infact I tried to cal the method from my GRID but its showing an syntax error.

I am attaching the code bit again with cl_gui_alv_grid implementation for your reference. Maybe you can tell me whats the mistake I am doing.

> [code]
 [code]CLASS lcl_event_receiver DEFINITION .
 PUBLIC:
 METHODS:
         handle_user_command
 FOR EVENT after_user_command OF
 r_command OF cl_gui_alv_grid
                 IMPORTING e_ucomm e_not_processed.
 ENDCLASS.                    "lcl_event_receiver

CLASS lcl_event_receiver IMPLEMENTATION.
   METHOD handle_user_command.
 
 *    IF e_not_processed IS INITIAL.
 
 <b>  CALL METHOD
 g_custom_2000->get_filtered_entries
                   
       IMPORTING
           et_filtered_entries = lt_entries.</b>
 
 *    ENDIF.
 ENDMETHOD.
 D.
 
                          "handle_user_command

ENDCLASS. "lcl_event_receiver

IMPLEMENTATION

DATA: g_event_receiver TYPE REF TO
 lcl_event_receiver,
       g_grid_2000      TYPE REF TO lcl_method_call,
       g_grid_3000      TYPE REF TO lcl_method_call.
CLASS lcl_method_call DEFINITION INHERITING FROM cl_gui_alv_grid.
  PUBLIC SECTION.
    METHODS: get_row EXPORTING row TYPE lvc_s_row.


ENDCLASS.                    "lcl_method_call DEFINITION

*---------------------------------------------------------------------*
*       CLASS lcl_method_cal IMPLEMENTATION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS lcl_method_call IMPLEMENTATION.
  METHOD get_row.
    CALL METHOD me->get_current_cell_row_id
      IMPORTING
        row_id = row.
  ENDMETHOD.                    "get_row

ENDCLASS.                    "lcl_method_call IMPLEMENTATION

> INITIALIZATION.

> perform check_screen.

> START-OF-SELECTION.

> perform get_data[/code][/code]

Re: Call method within a Method in Class Implementation

RichHeilman — Fri, 10 Mar 2006 14:36:55 GMT

What is g_custom_2000?

CALL METHOD
 <b>g_custom_2000-></b>get_filtered_entries
                   
       IMPORTING
           et_filtered_entries = lt_entries.

the g_grid_2000 object is your alv_grid object since it inherits from cl_Gui_alv_grid. You should be calling the method against that object.

CALL METHOD
 <b>g_grid_2000-></b>get_filtered_entries
                   
       IMPORTING
           et_filtered_entries = lt_entries.

Regards,

Rich Heilman

Re: Call method within a Method in Class Implementation

Former Member — Fri, 10 Mar 2006 14:43:13 GMT

Thanks Jhon and Rich,

I was calling the method from my ALV container and not the GRid as rightly pointed out by you.

The issue is sorted .

Thanks for the help.

Really appreciated