RE: how to: extract interface of class with methods from a superclass

Michal,

Well, yes - any user of B sees A's methods. But when you "extract interface" you are doing to get the interface to that class - not its supertypes.
You should extract the interface of A (IA, which will be implemented by A). Likewise B should implement the interface to B (IB).

So, I can do that and implement two test classes TestA and TestB which implement IA and IB.
And I can arrange that TestB inherits TestA.

But my original class C imports interface IB (replacing B) - so I don't have the method on IA.
It's not at clear how to refactor this without some really invasive modifications - which I'd like to avoid!

So, the original question stands . what's the good way?

John D.

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Michal Svoboda
Sent: 20 September 2013 20:19
To: [email protected]
Subject: Re: [refactoring] how to: extract interface of class with methods from a superclass

Donaldson, John wrote:
> Except, class B inherits class A and C is calling one of the inherited 
> methods.
> 
> Quite rightly "extract interface" on B only gives me the methods on B.

If B inherits A then interface of B should contain also interface of A.
Perhaps only some autonomous extract interface tool doesn't see it?



------------------------------------

Yahoo! Groups Links