Expanders: Statically Scoped Object Adaptation for Java
The expander is a new object-oriented (OO) programming language
construct designed to support object adaptation. Expanders allow
existing classes to be noninvasively updated with new methods,
fields, and superinterfaces. Each client can customize its view of a
class by explicitly importing any number of expanders. This view
then applies to all instances of that class, including objects
passed to the client from other components. A form of expander
overriding allows expanders to interact naturally with OO-style
Statically Scoped Object Adaptation with
Expanders (OOPSLA 2006)
Alessandro Warth, Milan Stanojevic, and Todd Millstein
The EJava language extends Java 1.5 with expanders. The EJava compiler is
implemented as an extension in the Polyglot
extensible compiler framework.
Download the May 2007 release!