NAOS Protyotype - Version 2.2

Rule Definition: Primitive events are principally entity manipulation events generated by operations such as creations, deletions, access, updates (of an entity or a part of it), changes of the persistency status, insertions and deletions into/from collections and method calls. The moment of generation(i.e., when an event occurs) can be either before or after the actual operation depending on the type of the event. Applicative and user defined events are supported. Primitive temporal events can be absolute, relative or periodic. Composite events [l] are made recursively of events connected by eight constructors: disjunction, conjunction, sequence, strict sequence, iteration, strict iteration, negation and strict disjunction. The condition of the rule is an OQL query. The action part is made of OaC statements.