topic Re: Using container from another global class in Application Development and Automation Discussions

Using container from another global class

Former Member — Fri, 03 Jun 2011 06:11:11 GMT

There are two global classes being used by me in a program - Class A and Class B.

Class A contains the container to display ALV.

Class B contains the logic to display ALV.

class B is used as attribute class in Class A.

How is that I can use the container from Class A from class B?

Re: Using container from another global class

MarcinPciak — Fri, 03 Jun 2011 08:30:23 GMT

Like this?


class A ...
   public section.
      methods: get_container returining value(ref_cont) type ref to ...,
                      constructor.
   private section.
      data ref_container type ref to....
endclass.

class A impl...
   method get_container.
        ref_cont = me->ref_container.
   endmethod.

   method constructor.
      create object ref_container ....
   endmethod.
endclass.

class B ...
   public section.
       methods: constructor,
                      display alv.
   private section.
       data ref_alv type ref to....
       data ref_A type ref to A.
endclass.

class B impl...
   method constructor.
       data lr_container type ref to ...
       
       if ref_A is not bound. 
            create object ref_A.
      endif.

      "get container from class A
       lr_container = ref_A->get_container( ).
                                   
       create object ref_alv 
            exporting
                ....
                 container = lr_container
                ...
   endmethod.

   method display_alv.
        call method ref_alv->set_table_for_first_display...
    endmethod.
endclass.

If storing container's reference under local LR_CONTAINER in class B constructor causes not displaying ALV, you will have to store this under class B attribute. Alternative would be directly indicating the container reference as parent to ALV by calling functional method like


create object ref_alv
      exporting
            ..
           container = ref_A->get_container( )

this will however work in recent releases of SAP NW AS.

Regards

Marcin

Re: Using container from another global class

Former Member — Mon, 06 Jun 2011 08:29:42 GMT

let me be more clear, Class A has container with spilter where the screen is split into 2 parts. The frist part having a drop down button and second part should display the alv grid based on the input from drop down button. Which means I should fill the alv and send that to class A.

Edited by: ibmsateeshkumar on Jun 6, 2011 10:33 AM

Re: Using container from another global class

Former Member — Wed, 08 Jun 2011 03:47:51 GMT

These are global classes

Re: Using container from another global class

Former Member — Wed, 08 Jun 2011 22:00:11 GMT

not sure background of your design, but in your case container class A better be used as utilities class so it should be used in B but not visa versa. Then you can use A's container in B as general