An Event Based Object Model for Distributed Programming

Starovic, Gradimir; Cahill, Vinny; Tangney, Brendan

doi:10.1007/978-1-4471-1009-5_7

Cited by 14 publications

(9 citation statements)

References 23 publications

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“…Their approach uses multicast and client-side filtering to decide on whether events should be delivered to applications [14]. We take the view that filtering at the event source, or at a nearby event service, is preferable for scalability.…”

Section: We Have Fine-grained Registrationmentioning

confidence: 99%

Using events for the scalable federation of heterogeneous components

Bates

Bacon

Moody

et al. 1998

Proceedings of the 8th ACM SIGOPS European Workshop on Support for Composing Distributed Applications

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The thesis of this paper is that, using our eventbased development principles, components that were not designed to interoperate, can be made to work together quickly and easily. The only requirement is that each component must be made event-based by adding an interface for registering interest in events and an interface for injecting actions. A component notifies an event to a distributed client if the parameters of an event, internal to the component, match the parameters of a particular registration. Heterogeneous components can be federated using event-based rules; rules can respond to events from any component by injecting actions into any other component. We show that the event paradigm is scaiable by illustrating how event-based components can be located worldwide, using a federation of event brokers. Additionally, we illustrate with 3 event-based systems we have developed: a component-based multimedia system, a multi-user virtual worlds system and an augmented reality system for mobile users. Finally, we show how the event paradigm is also scalable enough to allow event federation of entire systems, not just single components. We illustrate by showing how we have federated the operation of the 3 featured eventbased systems. This enables, for example, real-world mobile users to appear as avatars in the appropriate locations in the VR world, and for these avatars to move in response to actual user movements.

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Section: We Have Fine-grained Registrationmentioning

confidence: 99%

Using events for the scalable federation of heterogeneous components

Bates

Bacon

Moody

et al. 1998

Proceedings of the 8th ACM SIGOPS European Workshop on Support for Composing Distributed Applications

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“…The void object model, known as Eco [11], combines three key concepts: objects representing entities, events providing the means for entities to interact and constraints which allow the specification of synchronisation, real-time, and notification requirements.…”

Section: The Eco Modelmentioning

confidence: 99%

Techniques for handling scale and distribution in virtual worlds

O'Connell

Dinneen

Collins

et al. 1996

Proceedings of the 7th Workshop on ACM SIGOPS European Workshop: Systems Support for Worldwide Applications

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Lack of bandwidth and network latency are known to be major impediments to achieving realism in distributed virtual world (vw) applications with a large number of, potentially geographically dispersed, entities. This paper describes a combination of techniques that we are using to overcome these twin problems. The techniques described are intended to reduce both the volume and frequency of communication between the entities that make up the virtual world and include the use of anonymous event-based communication with notify constraints, scoping of event propagation with zones, and use of predictive approaches to replica management. Each of these techniques is described in turn.

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“…A large number of extensions have been proposed to eventbased programming to make it more suitable for different domains [1], [2], [3], [4], [5], [6], [7], [8]. One notable example is the addition of filters, pre and post constraints, zones, composite events and other abstractions which have been proposed to make the event model more suitable for large scale distributed systems [2], [6], [7], [8].…”

Section: Introductionmentioning

confidence: 98%

Multi-Event Handlers for sensor-driven ubiquitous computing applications

Reilly

2009

2009 IEEE International Conference on Pervasive Computing and Communications

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We propose an extension to the event-based programming model for sensor-driven ubiquitous computing applications. The extension consists of three abstractions: MultiEvent Handlers, Execution Policies and Event Streams. We believe that these additional abstractions simplify the task of writing applications in this domain. We present the abstractions and describe an example application from the sports domain implemented using our prototype middleware.

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An Event Based Object Model for Distributed Programming

Cited by 14 publications

References 23 publications

Using events for the scalable federation of heterogeneous components

Using events for the scalable federation of heterogeneous components

Techniques for handling scale and distribution in virtual worlds

Multi-Event Handlers for sensor-driven ubiquitous computing applications

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