Marker interface pattern: Difference between revisions

Revision as of 13:41, 11 April 2006

Revision as of 05:15, 21 April 2006

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== Critique ==

The implementation of this pattern presented above is rather specific to Java. Other object models support rich ways of quickly querying static data. For example, [[.NET Framework|.NET]] supports attributes that can be used to associate any type of data with a class or with its members. As of [[J2SE]] 5.0, Java supports [[reflection (computer science)|reflective]] [[annotation]]s that can be used to associate attributes with classes, interfaces, methods, [[Constructor (computer science)|constructors]], [[Field (computer science)|fields]] and [[Java package]]s. Annotation allow a rich and fine-grained association of [[metadata]] to program elements.

== Marker interface patterns in PHP 5 ==

Although often shoved to the back of the pile in terms of [[OOP]] capabilities, [[PHP]] 5 provides an excellent level of Object functionality for a [[dynamically typed language]]. Although in most cases not neccesarry, you could recreate the Java example above like so:

<code>

<?php

interface Cloneable {}

class MyClass implements Cloneable {}

?>

</code>

== See also ==