Re: Is this proper in OO theory?

From: Marina (someone_at_nospam.com)
Date: 07/07/04 

Date: Wed, 7 Jul 2004 11:25:40 -0400

I don't feel like I'm getting a clear example of the issue from this
particular code sample.

In general, there is nothing wrong with putting anything in the base class
that will be useful to all its children, even if it requires some
parameters.

"Daniel Billingsley" <dbillingsley@NO_durcon_SPAAMM.com> wrote in message
news:uKwNqTDZEHA.2972@TK2MSFTNGP12.phx.gbl...
> The base class obviously can't know anything about a class which inherits
> from it, but is it acceptable to have a base class method which will be
> given information from an inherited class?
>
> For (a stupid) example:
>
> -----------
>
> public abstract class BaseClass
> {
> private int _someInteger=0;
>
> protected int AddNumbers(int anotherNumber)
> {
> return anotherNumber + _someInteger;
> }
>
> }
>
> public class Class2 : BaseClass
> {
> private int _anotherInteger;
> public int GetANumber()
> {
> return base.AddNumber(_anotherInteger);
> }
> }
>
> ----------
>
> The underlying issue is that the generic code in the AddNumbers method
from
> example is known to be needed in all the classes inheriting from
BaseClass,
> but needs some additional information based on the specifics of the
> inherited class (it's a data access method in reality).
>
>

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