topic Re: class contructor internal table in Application Development and Automation Discussions

class contructor internal table

Former Member — Thu, 30 Sep 2010 10:06:00 GMT

Hi epert,

I am new for abap objects and i am trying to change the standard program.Please refer below.

CLASS a DEFINITION.
  CLASS-METHODS b.
  METHODS: constructor.
  METHODS: my,
           name.
ENDCLASS.                    "A DEFINITION

CLASS a IMPLEMENTATION.
  METHOD b.
    DATA screen TYPE REF TO a.
    CREATE OBJECT screen.
  ENDMETHOD.                    "B

  METHOD constructor.
    CALL METHOD : me->my.
  ENDMETHOD.                    "Constructor

ENDCLASS.                    "A IMPLEMENTATION

START-OF-SELECTION.
  CALL METHOD a=>b.

How it is possbile for me to pass a internal table to the method MY. I have internal table and i need to assign to the method MY.

Please guide me. standard program DEMO_ABAP_OBJECTS_SPLIT_SCREEN

Edited by: Matt on Sep 30, 2010 4:47 PM - added tags

Edited by: Matt on Sep 30, 2010 4:49 PM

Re: class contructor internal table

SuhaSaha — Thu, 30 Sep 2010 10:49:26 GMT


> How it is possbile for me to pass a internal table to the method MY.

Hello,

You have to create a formal parameter for the method MY & pass your internal table to it:

Something like this:

Class A definition.
class-methods B.
methods: constructor.
methods: my IMPORTING im_itab TYPE <line type of your internal table>,
name.
Endclass.

In your CONSTRUCTOR pass the Internal Table value:

Method Constructor.
call method me->my EXPORTING im_tab = itab[].
endmethod.

BR,

Suhas

Re: class contructor internal table

matt — Thu, 30 Sep 2010 14:51:14 GMT

Can I suggest that you get into the habit, right now, of using meaningful class, method and attribute names.

Re: class contructor internal table

naimesh_patel — Thu, 30 Sep 2010 16:53:34 GMT


> In your CONSTRUCTOR pass the Internal Table value:
> Method Constructor.
> call method me->my EXPORTING im_tab = itab[].
> endmethod.
>

In classes, we don't have the header line. So, there is no need to pass the "body" by []. Internal table name is enough to pass the data... Specifying it without the brackets avoids the confusion...

Regards,

Naimesh Patel

Re: class contructor internal table

SuhaSaha — Thu, 30 Sep 2010 16:56:09 GMT

Thanks for pointing it out Naimesh.

Re: class contructor internal table

Former Member — Fri, 01 Oct 2010 06:41:34 GMT

Hi Suhas Saha.

Really thanks for your reply and i am trying my level best to try and error due i m new to this abap objects.

But i have question.

Is it possible to pass the itab[] from CALL METHOD a=>b.This is because my internal table is coming from other place.

I mean not in the class.

Basically it is coming from the screen 100 or main screen or previous screen.

Please advice if i am doing a mistake.

HI Matt. Thanks a lot and i will follow your guide.

Thank a lot everyone.

Re: class contructor internal table

matt — Fri, 01 Oct 2010 08:11:54 GMT

You define your CLASS-METHOD (also known as a static method) to have parameters, exactly in the way that Suhas showed you for method "my".

CLASS-METHODS b IMPORTING it_data TYPE <type of your internal table>.

I suggest your read carefully, again, the documentation on the various keywords - CLASS-METHODS, METHODS etc.

Re: class contructor internal table

Former Member — Fri, 01 Oct 2010 08:14:25 GMT

HI Matt and Suhas Saha,

I have done it. I used Sahas Saha tips and i did some search in SDN.

I got. It is good start for me in abap objects.

Thanks a lot everyone Matt and Suhas Saha.

I will close this thread.