Techniques for detecting patterns in one or more data or event streams. A pattern to be detected may be specified using a regular expression. Events received in a data stream are processed during runtime to detect occurrences of the specified pattern in the data stream. In one embodiment, a pattern type...http://www.google.com/patents/US20100057735?utm_source=gb-gplus-sharePatent US20100057735 - FRAMEWORK FOR SUPPORTING REGULAR EXPRESSION-BASED PATTERN MATCHING IN DATA STREAMS