topic global abstract objects in Application Development and Automation Discussions

global abstract objects

Former Member — Thu, 03 Sep 2009 08:12:36 GMT

I want to create objects from a abstract class in one Report an store them globally, to have access to this objects from another Report. With shared-objects it is only allowed, to create objects from classes, which are not abstract. Is there any solution, to realize this?

Re: global abstract objects

Sandra_Rossi — Thu, 03 Sep 2009 11:07:58 GMT

in Object Oriented Programming (whatever the language is), you CANNOT instantiate abstract classes directly. They are kind of models which are used by sub-classes (inheritance).

You must find out which real class is instantiated by copying the logic of other programs which do that.

Re: global abstract objects

Former Member — Thu, 03 Sep 2009 11:55:00 GMT

Hi Sandra,

don't you have to separate between fully abstract classes (class is explicitely defined as abstract) and those which only have some abstract methods (or attributes)? Doesn*t this fact influence the instantiation capability?

Greets

Matthias

Re: global abstract objects

Sandra_Rossi — Thu, 03 Sep 2009 12:19:48 GMT

are you the same person than the original poster? 😄

If you have an abstract method, it implies that the class is abstract.

Re: global abstract objects

Former Member — Thu, 03 Sep 2009 12:45:30 GMT

Hi Sandra,

no I am not. How do you think I could? But actually I know him...

OK, no question what you state is logical. But according to wikipedia (german version) this actually makes a difference. So I was a little curious and wanted to know if this makes a difference regarding instantiation.

Greets

Matthias

Re: global abstract objects

Sandra_Rossi — Thu, 03 Sep 2009 13:18:00 GMT

maybe, I don't speak all programming languages

What I say is valid for ABAP 😄

Re: global abstract objects

Former Member — Thu, 03 Sep 2009 15:29:58 GMT

@Dietmar,

you will have to use shared objects if you want to have access from two different ABAP reports.

Maybe you can use a static attribute of a "dedicated" class to carry the instance reference and then use it in both reports. For sure this is kind of dirty.

Greets

Matthias