Re: [PHP4BETA] Re: SESS: objects containing objects *final statement*(?) please read!

Kristian Köhntopp wrote: > > "Stig S. Bakken" wrote: > > Now, when it comes to waking up unserialized objects again, calling the > > constructor is definitely not what we want. > > In Nextstep and Objective-C things were like this (for a reason): > > The initializer (the initializing half of a constructor) > was always called "init" (and not like the class). That way, > you could have a derived class which had any class as a parent > class without coding the parent classes name multiple times. > This is unlike PHP and C++, where > > class B extends A { > function B() { > A::A(); // call parent constructor > } > } > > the parent class name is included multiple times, leading to > a classic update anomaly. > I actually split out the initialize function into a separate method so that I can have different initializers for different occasions, very similar to the way Nextstep Objective-C classes defined multiple init methods. I name most of them init () or initWithSomeParameter (someParameter) in the same way that Next did. However, what I really find irritating is having to use the class name of the parent class in order to invoke the parent's implementation of a method. Is it too late to add a $super variable to PHP4 so that I could write the following kind of code: class A { var x; function init () { $this->x = "some value"; } } class B extends A { var y; function init () { $super->init (); $this->y = "some other value"; } } > Then there were optional "freeze" and "wakeup" member > functions which, if present, were called before serialization > and after unserialization. These functions had the opportunity > to make the object ready for serialization or reinitialize it > after serialization. They also were able to return "false" to > exempt them from serialization as a whole. > > Kristian > I found that the Next serialization conventions were able to handle every situation where I needed to freeze-dry an object. I think it would be a good idea to pattern after their example. > -- > Kristian Köhntopp, NetUSE Kommunikationstechnologie GmbH > Siemenswall, D-24107 Kiel, Germany, +49 431 386 436 00 > Using PHP3? See our web development library at > http://phplib.netuse.de/ (We have moved! Update your > bookmarks!) Kim -- Kim Shrier - principal, Shrier and Deihl - mailto:kim@tinker.com Remote Unix Network Admin, Security, Internet Software Development Tinker Internet Services - Superior FreeBSD-based Web Hosting http://www.tinker.com/