Rule-Based Object Coordination

We discuss a framework in which the traditional features of objects (encapsulation, communication, etc.) are enhanced with synchronization and coordination facilities, using the declarative power of rules. We propose two interpretations of rules, one re-active and the other pro-active, corresponding to diierent kinds of interactions between the rules and the objects. Finally, we consider the problem of capturing domain speciic knowledge within a general coordination framework, for which constraints ooer a promising direction of research.