topic Re: CREATE OBJECT inside INITIALIZATION event in ABAP in Application Development and Automation Discussions

CREATE OBJECT inside INITIALIZATION event in ABAP

former_member392636 — Tue, 12 Aug 2014 14:39:57 GMT

Hi everyone,

I have one question, can we create object inside INITIALIZATION event. Why, I am asking this question is, because most of the time I have seen people to create object inside start-of-selection. Please give your thought on this.

The code I have just coded below is also right or wrong?

CLASS lcl_build_data DEFINITION.
   PUBLIC SECTION.
     METHODS : constructor,
                        get_all_files,

                         validate_site.

*-- Private Section declaration
   PRIVATE SECTION.
         METHODS : clear_and_refresh,
                            display_output.
ENDCLASS.

*** class declaration, create instance for the class
DATA: gv_data TYPE REF TO lcl_build_data.

INITIALIZATION.
*** Create class object. Constructor method will be called to Refresh
*** and Clear all internal tables and Work areas

   CREATE OBJECT gv_data.

*----------------------------------------------------------------------*
*                    AT SELECTION-SCREEN             *
*----------------------------------------------------------------------*
AT SELECTION-SCREEN ON s_vkbur.
*** Sales Office validation
   CALL METHOD gv_data->validate_site.

*----------------------------------------------------------------------*
*                START-OF-SELECTION                    *
*----------------------------------------------------------------------*
START-OF-SELECTION.

*** Get the list of all files from unix dir.
   CALL METHOD gv_data->get_all_files.

Re: CREATE OBJECT inside INITIALIZATION event in ABAP

former_member192854 — Tue, 12 Aug 2014 14:53:37 GMT

If you make use of the object instance in the processes of the screen, INITIALIZATION looks a good spot to me.

Best,

Sander

Re: CREATE OBJECT inside INITIALIZATION event in ABAP

naimesh_patel — Tue, 12 Aug 2014 15:31:12 GMT

Since you are using the same object for your Selection screen related events, AT SELECTION-SCREEN, you would have to instantiate the object in the INITIALIZATION event. If your object usage is just for the data - In case you use the MVC design pattern, you should push back the object creation in START-OF-SELECTION.

Regards,

Naimesh Patel

Re: CREATE OBJECT inside INITIALIZATION event in ABAP

former_member392636 — Tue, 12 Aug 2014 15:42:15 GMT

Thank you Naimesh. It really sounds good