An event-condition-action language for XML

  • Authors:
  • James Bailey;Alexandra Poulovassilis;Peter T. Wood

  • Affiliations:
  • University of Melbourne, Australia;Birkbeck College, University of London, London, United Kingdom;Birkbeck College, University of London, London, United Kingdom

  • Venue:
  • Proceedings of the 11th international conference on World Wide Web
  • Year:
  • 2002

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Abstract

XML repositories are now a widespread means for storing and exchanging information on the Web. As these repositories become increasingly used in dynamic applications such as e-commerce, there is a rapidly growing need for a mechanism to incorporate reactive functionality in an XML setting. Event-condition-action (ECA) rules are a technology from active databases and are a natural method for supporting suchfunctionality. ECA rules can be used for activities such as automatically enforcing document constraints, maintaining repository statistics, and facilitating publish/subscribe applications. An important question associated with the use of a ECA rules is how to statically predict their run-time behaviour. In this paper, we define a language for ECA rules on XML repositories. We then investigate methods for analysing the behaviour of a set of ECA rules, a task which has added complexity in this XML setting compared with conventional active databases.