ARM : un modèle réflexif asynchrone pour les objets répartis et réactifs

The traditional procedural approach to programming language reflection, where the connection between the base and the meta levels is of an implementation nature, is challenged by component-based, distributed and reactive systems. In all of these fields, part of the system to reflect upon cannot be captured in an “implements” relation, where the metalevel operates as a language processor (e.g. interpreter) either because we lack a centralized state or an essential ingredient lies outside the system. We introduce a novel asynchronous reflective model, ARM, where the connection between levels use an asynchronous publish/subscribe communication model. We show not only that this model is better suited to distributed and reactive systems, but that it also generalizes the possible forms of reflection by adopting and adapting to the “right combination of connection and detachment” between the base and the meta level. We present a first implementation of ARM in Java, under J2EE with JMS. MOTS-CLÉS : réflexion, publication/souscription, Java, connexion causale, adaptation dynamique.