Open Collections

Abstract

We propose bottom-up support for modeling crosscutting structure in UML by adding a simple join point model to the meta-model. This supports built-in crosscutting modeling constructs such as class and sequence diagrams, collaborations, and state machines. It also facilitates adding new kinds of crosscutting modeling constructs such inter-type declarations and advice. A simple planner tool produces a uniform representation of the crosscutting structure, which can then be displayed or analyzed in a variety of ways. We demonstrate a couple of simple automated analysis tools which take advantage of the exposed crosscutting structure. We also discuss how support for advice could be added to the meta-model and planner, and the semantic differences between advice in UML and Aspect J.