L.: Gaining reactivity for rich internet applications by introducing client-side complex event processing and declarative rules

Rich Internet Applications provide, in conjunction with Internet push technologies, a powerful framework to bring use cases formerly reserved to server applications to the client, and to ease their use. In this paper we present a novel approach of monitoring and process-ing event streams directly in the browser. Our pro-posed general-purpose framework aims at the design of event-driven, reactive and adaptive Rich Internet Ap-plications. We propose to interweave complex event processing with declarative rule execution directly on the client-side. Our work is based on a novel event-condition-action rule language tailored to the needs of Rich Internet Applications as well as algorithms capa-ble of detecting complex events and executing rules. The whole approach will be illustrated by means of an example originating from the field of algorithmic stock trading