topic Re: accessing super class method inside a sub class method in Application Development and Automation Discussions

accessing super class method inside a sub class method

tharun_kumar1 — Thu, 17 Mar 2016 23:20:32 GMT

Hello experts

I have a class CL_X created as an abstract class. In this, there is a method, called check_doc_x.

Now, I have a sub class inheriting from CL_X. In this sub class, I've redefined check_doc_x for some standalone checks. In addition I have a sub class method check_doc_y. Now, I want to access super class method check_doc_x inside the sub class method check_doc_y. All the methods are instance methods.

Is this possible? I tried casting and it didn't work.

Re: accessing super class method inside a sub class method

paul_bakker2 — Fri, 18 Mar 2016 00:01:29 GMT

Hi,

I'm not sure I understand your question. Do you have two levels of subclasses or one?

What happens when you try to execute super->check_doc_x?

cheers

Paul

Re: accessing super class method inside a sub class method

Former Member — Fri, 18 Mar 2016 04:18:33 GMT

Hi Tharun,

It is only possible to access super class method in subclass redefinition method.

METHOD check_doc_x.

super->check_doc_x( ).

WRITE : /'This is check_doc_x redifined'.

ENDMETHOD.

As mentioned about casting, you can perform only widening cast(super ref ?= sub object) but the vice versa up casting ( sub ref ?= supobj) is not possible as super class is an abstract class.

Even in case of widening cast,if you call super class method(check_doc_x),eventually it means you are calling subclass redefinition method.

lob_x ?= lob_y.

lob_x->check_doc_x( ).

As per my understanding,accessing super class abstract method in subclass method is not possible.I would be glad to know if its possible.

Regards

Pallavi.

Re: accessing super class method inside a sub class method

tharun_kumar1 — Fri, 18 Mar 2016 05:45:46 GMT

Thanks Pallavi,

I had this scenario and unnecessarily I am copy pasting the entire contents of super class method inside the sub class method. So maybe there is no workaround I believe.

Re: accessing super class method inside a sub class method

paul_bakker2 — Fri, 18 Mar 2016 05:52:08 GMT

The super class is abstract, so why would you want to execute the (empty) method?

cheers

Paul

Re: accessing super class method inside a sub class method

tharun_kumar1 — Fri, 18 Mar 2016 09:01:07 GMT

The super class is abstract, but I've implemented all the methods. These are used in many of my subclasses.

When I create a sub class object and call a method, the super class method implantation is called. If I refund it in sub class, then the latter one is called.

Regards

Tharun