Re: Q: Refactorizing code because Inheritance and Interfaces

[Stephen Leake <Stephe.Leake@nasa.gov>]

Michael Erdmann <Michael.Erdmann@snafu.de> writes:

> In order to line up the implemenation of the XML_Reader with the 
> Abstract_Reader interface i need to rewrite the complete XML_Reader.
> Is there any way to avoid such situations?

In general, no. Refactoring is hard work. That's why it's worth doing :).

> In java i would use   constructs as implements  Sax..,Abstract_Reader.

Ada 200Y will have interface inheritance similar to Java's. But you
still need to rewrite the implementation, so I don't see that as
saving much work.

You can get something similar to interface inheritance in Ada 95 using
generic mixins. It depends on the details of what you are doing
exactly what approach to take.

-- 
-- Stephe