topic accessing protected method from class CL_GUI_ALV_TREE in Application Development and Automation Discussions

accessing protected method from class CL_GUI_ALV_TREE

Former Member — Mon, 06 May 2013 09:16:28 GMT

Hi,

I have delveloped tree report using class CL_GUI_ALV_TREE.

I want to access a method CALCULATE_SUBTREE in that class.But it was protected method implemented in

super class CL_ALV_TREE_BASE class.

How to access this mehtod?

I created a local class inheriting the suprecalss and inside that i am accessing CALCULATE_SUBTREE .

But inside the mehtod the table values mt_outtab-> is initial.It gives the terinimation with access null reference.

Pleae let me know how do i access the values from the base class.

Re: accessing protected method from class CL_GUI_ALV_TREE

Former Member — Mon, 06 May 2013 10:24:08 GMT

Hi,

Did you try type casting to access the method in the base class? Try the below code.

DATA : l_base TYPE REF TO cl_alv_tree_base,

l_tree TYPE REF TO cl_gui_alv_tree.

/*after the required objects are created*/

l_base ?= l_tree.

l_base->calculate_subtree().

I didn't try to execute the code myself. See if you can get any help from it.

Hope this helps,

~Athreya

Re: accessing protected method from class CL_GUI_ALV_TREE

Former Member — Mon, 06 May 2013 10:59:41 GMT

Hi,

Thanks for the reply.

I have tried that too.

But it is showing syntax error access to protected CALCULATE_SUBTREE is not allowed.

Thanks ,

Balachandran R

Re: accessing protected method from class CL_GUI_ALV_TREE

SuhaSaha — Mon, 06 May 2013 11:31:05 GMT

You can only access protected methods/attributes of super-classes from sub-classes. Casting won't be able of any help

@Bala - Can you please explain what exactly you want to achieve (your business requirement, maybe) by calling this protected method?

BR,

Suhas

Message was edited by: Suhas Saha

Re: accessing protected method from class CL_GUI_ALV_TREE

Former Member — Mon, 06 May 2013 11:36:04 GMT

This message was moderated.

Re: accessing protected method from class CL_GUI_ALV_TREE

Former Member — Tue, 07 May 2013 05:36:54 GMT

Hi,

The output columns are aggregated with totals.My requirement is to get the calculated line of the sub tree and comparing totals with another sub tree in the program.

Regards,

Balachandran R

Re: accessing protected method from class CL_GUI_ALV_TREE

Former Member — Tue, 07 May 2013 06:54:41 GMT

This message was moderated.