Synonyms
Event processing component; Event processing mediator
Definition
A software module and a node in the event processing network that process events [2].
Key Points
An event processing agent [3] is a node in the event processing network that receives one or more events as input, processes them, and creates one or more events as output. There are various types of event processing agents [4]:
- 1.
Filter agent: receives a single event and decides based on a predicate expression whether to route this event further or not (in this case it is a terminal node for this specific event instance).
- 2.
Validation agent: receives a single event and a predicate expression that serves as an integrity constraint for this event. If the integrity constraint is violated may act as a filter (reject the event), may transform the event, or may orchestrate additional actions in an event sink.
- 3.
Transformation agent: receives a single event and transforms this event to another event format.
- 4.
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Recommended Reading
Luckham D. The power of events. Boston: Addison-Wesley; 2002.
Luckham D, Schulte R. editors. EPTS event processing glossary version 1.1. http://complexevents.com/?p=409
Loke SW, Padovitz A, Zaslavsky A. Context-based addressing: the concept and an implementation for large-scale mobile agent systems using publish-subscribe event notification. In: Proceedings of the 4th International Conference on Distributed Applications and Interoperable Systems; 2003. p. 274–84.
Sharon G, Etzion O. Event processing network: model and implementation. IBM Syst J. 2008;47(2):321–34.
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Etzion, O. (2018). Event Processing Agent. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_587
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DOI: https://doi.org/10.1007/978-1-4614-8265-9_587
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