Matching events in a content-based subscription system
Proceedings of the eighteenth annual ACM symposium on Principles of distributed computing
Design and evaluation of a wide-area event notification service
ACM Transactions on Computer Systems (TOCS)
Efficient Filtering of XML Documents for Selective Dissemination of Information
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
WebFilter: A High-throughput XML-based Publish and Subscribe System
Proceedings of the 27th International Conference on Very Large Data Bases
Composite Events for Active Databases: Semantics, Contexts and Detection
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
Efficient filtering of XML documents with XPath expressions
The VLDB Journal — The International Journal on Very Large Data Bases
YFilter: Efficient and Scalable Filtering of XML Documents
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Composite event detection as a generic middleware extension
IEEE Network: The Magazine of Global Internetworking
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Content-based Pub/sub system offers a convenient abstraction for information producers and consumers, supporting a large-scale system design and evolution by integrating several distributed independent application systems. However, existing content-based Pub/Sub systems mainly focus on the "one-to-one" event matching, not on the composite event matching. The composite event matching enables application components to express more interest in the occurrence of event composite patterns. In this paper, we present a XML-based composite event model that consists of the temporal logical model and the event composite pattern. Based on the composite event model, a subscription language (EXML-QL) is introduced by extending XML-QL language to support the XML-based composite event computing. Finally, according to the peculiarities of the subscription language, a composite event matching algorithm is presented and analyzed.