I use inheritance to create what I think is called an "interface", requiring certain methods to be overridden and to ensure that all of the components can be serialized. Is this proper use? In this case I have a base component that has serialization/deserialization methods, as well as a debug output method and every component in my system extends this component. Although I do see how that would be a problem for an "is-a" relationship that might pop-up....guess it just a tradeoff I'll have to deal with.
-Steven
>From: Sean Corfield <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: AW: AW: [CFCDev] Validation
>Date: Sun, 21 Nov 2004 09:52:37 -0800
>
>On Sun, 21 Nov 2004 14:27:13 +0100, Magnus Wege <[EMAIL PROTECTED]> wrote:
> > What do you think of a "global" CFC which has several standard methods for
> > inhertited CFCs? But I don't know if it is a good idea to inheret all CFCs
> > from one "application CFC"??
>
>It isn't. Inheritance for reuse is bad. Inheritance should be reserved
>for "is-a" relationships and using it to facilitate code reuse like
>this can get you into a mess. It would prevent you using inheritance
>for real "is-a" relationships between these objects because you can
>only extend one CFC.
>
>There are exceptions of course but you should start from the premise
>that it's a bad idea and really examine your classes and their
>relationships. If you really do have a series of 'flat' CFCs (i.e.,
>where no future additional CFC would ever extend anything outside this
>series) and they all share methods that are absolutely identical in
>every member of that series, then it might be a worthwhile refactoring
>to create a base CFC and move those methods into it.
>
>Mach II did this for the 1.0.10 release, refactoring some common code
>out of Listener, EventFilter and Plugin up into a new BaseComponent
>(terrible name).
>--
>Sean A Corfield -- http://www.corfield.org/
>Team Fusebox -- http://www.fusebox.org/
>Breeze Me! -- http://www.corfield.org/breezeme
>Got Gmail? -- I have 1 invite
>
>"If you're not annoying somebody, you're not really alive."
>-- Margaret Atwood
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