Translating Traversals to AspectJ

Outline Motivation Demeter Process for Traversals AspectJ Translation Process

Motivation Add traversals to AspectJ Future integration of DemeterJ functionality Understand how Demeter implements traversals Get to know AspectJ

Demeter Process for Traversals Obtain Class Graph Obtain Traversal Strategy Generate Traversal Graph from CG and TS Translate Traversal Graph into target platform

Demeter Process for Traversals class graph strategy AP Library Traversal Graph Traversal Pattern Implementation source language

AspectJ Translation Process Uses DJ to obtain Traversal Graph Given a TraversalGraph object, output AspectJ code to introduce methods to implement the traversal

Demter Process for AspectJ class graph strategy AP Library Traversal Graph Object Traversal Pattern Implementation in AspectJ AspectJ

Translation Complexity Traversals –From A to * –From A to B –From A to B bypassing C Class Graph –Concrete Classes, i.e. has-a edges –Alternation Classes, i.e. is-a edge –Collections

Project Schedule (1wk) Translate traversals for concrete classes (.5 wk)Add translation for alternation classes (.5 wk)Add support for collections