Method and apparatus for evaluating queries according to received event information and generating notifications

摘要

Queries are evaluated against received event information and notifications that events specified in the queries have occurred are generated by following the steps of; recording the number of queries; receiving an item of event information; comparing the received item of event information with the queries; and generating a notification if the item of event information matches the query. Normally a series of items of event information will be received and these are compared sequentially with the queries. Each query can be arbitrarily complex comprising a plurality of sub-queries each requiring a different item or items of event information to be matched.