Supporting interactive presentation for distributed multimedia applications
Multimedia Tools and Applications
The design and performance of a real-time CORBA event service
Proceedings of the 12th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Building an Integrated Active OODBMS: Requirements, Architecture, and Design Decisions
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
RTAS '95 Proceedings of the Real-Time Technology and Applications Symposium
Using Events to Build Distributed Applications
SDNE '95 Proceedings of the 2nd International Workshop on Services in Distributed and Networked Environments
High-level constructs in the READY event notification system
Proceedings of the 8th ACM SIGOPS European workshop on Support for composing distributed applications
The design and performance of a scable ORB architecture for COBRA asynchronous messaging
IFIP/ACM International Conference on Distributed systems platforms
Designing and Optimizing a Scalable CORBA Notification Service
OM '01 Proceedings of the 2001 ACM SIGPLAN workshop on Optimization of middleware and distributed systems
Stream enhancements for the CORBA event service
MULTIMEDIA '01 Proceedings of the ninth ACM international conference on Multimedia
The active collections framework
ACM SIGAPP Applied Computing Review
Power-aware video decoding using real-time event handlers
WOWMOM '02 Proceedings of the 5th ACM international workshop on Wireless mobile multimedia
A Multimedia Enhanced Distributed Object Event Service
IEEE MultiMedia
Moving Active Functionality from Centralized to Open Distributed Heterogeneous Environments
CooplS '01 Proceedings of the 9th International Conference on Cooperative Information Systems
Translating Role-Based Access Control Policy within Context
POLICY '01 Proceedings of the International Workshop on Policies for Distributed Systems and Networks
Channel Islands in a Reflective Ocean: Large Scale Event Distribution in Heterogeneous Networks
NETWORKING '02 Proceedings of the Second International IFIP-TC6 Networking Conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications
Integrating Notifications and Transactions: Concepts and X2TS Prototype
EDO '00 Revised Papers from the Second International Workshop on Engineering Distributed Objects
Event Storage and Federation Using ODMG
POS-9 Revised Papers from the 9th International Workshop on Persistent Object Systems
KECho - Event Communication for Distributed Kernel Services
ARCS '02 Proceedings of the International Conference on Architecture of Computing Systems: Trends in Network and Pervasive Computing
The Knowledge Engineering Review
Adaptive event communication in component-based systems
ARM '04 Proceedings of the 3rd workshop on Adaptive and reflective middleware
A tuplespace event model for mashups
Proceedings of the 23rd Australian Computer-Human Interaction Conference
Unified semantics for event correlation over time and space in hybrid network environments
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
A CORBA bidirectional-event service for video and multimedia applications
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
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Events are an emerging paradigm for composing applications in an open, heterogeneous distributed world. In Cambridge we have developed scalable event handling based on a publish-register-notify model with event object classes and server-side filtering based on parameter templates. After experience in using this approach in a home-built RPC system we have extended CORBA, an open standard for distributed object computing, to handle events in this way. In this paper, we present the design of COBEA - a COrba-Based Event Architecture. A service that is the source of (parameterised) events publishes in a Trader the events it is prepared to notify, along with its normal interface specification. For scalability, a client must register interest (by invoking a register method with appropriate parameters or wild cards) at the service, at which point an access control check is carried out. Subsequently, whenever a matching event occurs, the client is notified. We outline the requirements on the COBEA architecture, then describe its components and their interfaces. The design and implementation aim to support easy construction of applications by using COBEA components. The components include event primitives, an event mediator and a composite event service; each features well-defined interfaces and semantics for event registration, notification and filtering. We demonstrate that COBEA is flexible in supporting various application scenarios yet handles efficiently the most common event communications. The performance of server-side filtering for various registration scenarios is presented. Our initial experience with applications is also described.