Which pattern should apply in this case? 2005-03-25 - By Mich Hagdishovich
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First of all, I apologize for such a descriptive subject, I did not find an
adequate way of summarizing the exact question:
I have a set of base classes that work well within a product, but I need to
extend them for another product (and keep the existing product).
The exact class diagram is as follows:
I have a base class "A_0" that is extended by 40 or so other classes (A_1 .. A
_40). This infrastructure constitutes module "M1" of my product "P1".
Now, I need to have a module "M2", of product "P2". Module "M2" is exactly
like module "M1", but with an added feature (method).
For now, what I have done is, I have added the feature (method) to "A_0", and
this method is not used by anything within P1, but this way M2 is the same as
M1, and I can reuse the same jar.
I was thinking if there is a cleaner solution to this. Please note that I
cannot simply extend the classes, as the concrete classes A_1 .. A_40 are
already there, and if I extend them, I would be created B_1 extends A_1 ;.. B
_40 extends A_40, with an exact same method added, and that seems to be an even
(much) worse solution.
thanks,
Mich Hagdishovich
Genetics Software www.kromosoft.com
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