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NESTED COMPLEX SEQUENCE PATTERN QUERIES OVER EVENT STREAMS

  • US 20130066855A1
  • Filed: 03/27/2012
  • Published: 03/14/2013
  • Est. Priority Date: 09/12/2011
  • Status: Active Grant
First Claim
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1. A method of evaluating nested complex sequence pattern queries comprising:

  • obtaining events from an event stream;

    evaluating the events within a first window using an outer query to produce outer partial results;

    determining a more stringent window constraint, the more stringent window constraint comprising a subset of the window constraint corresponding to events that produces the outer partial results; and

    passing the more stringent window constraint to an inner query nested within the outer query.

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