Reflective Event Service Middleware for Distributed Component—Based Applications

An Event Service is needed for providing event delivery occurring distributed component-based applications such as multimedia communication, electronic commerce, and traffic control system. It supports asynchronous communication between multiple suppliers and consumers required by the distributed applications. However, the event service specification lacks important features for user requirements reflection as follows; reflective event filtering, user quality of service (UQoS) and component management. Thus, this paper proposes a Reflective Event Service (RES) Middleware framework for distributed component-based applications. The RES middleware based on CORBA Component Model (CCM) and includes the following components; reflective event filtering component, event monitor component, and UQoS management Component. Especially, this paper concentrates on providing suitable reflective event filtering component for UQoS service.