Re: Re: aggergate vs MI

On Mon, 2002-04-08 at 02:50, brad lafountain wrote: > > --- "Stig S. Bakken" <ssb@fast.no> wrote: > > On Sun, 2002-04-07 at 20:35, brad lafountain wrote: > > > > > > What would be wrong with having the *_SQL_* objects be a member of the > > > *_Connection* classes? > > > > What you're describing here is object aggregation. > > What do you mean... Im saying that the SQL implementation is a member or the > connection class.. Nothing to do with aggergation. aggergation would mean the > methods of the sql imp would be apart of the connection class not a member. > > Im still not convinced that aggergation is usefull. Object aggregation in general is a technique where you have some functionality in objects you forward calls to, a pretty common technique. You can of course do that in PHP today, but it's slow (lots of userland method calls) and high on maintenance (if an aggregated class gets a new method, you must make a new wrapper in the forwarding class, etc). In my opinion, providing "native" support for this in an efficient way makes a lot of sense for PHP. - Stig