摘要:
An apparatus, system and method for processing a stream of events in accordance with a set of queries that apply complex event pattern matching, and for performance of actions in accordance with active rules associated with those queries. The execution of actions can take the form of system state changes that in turn can affect the outcome of other queries. Scheduling policies assure both correct and high-performance execution of concurrent event pattern queries and active rules. The stream of events can be associated with a variety of applications including monitoring of hygiene and infection control activities associated with health care.
摘要:
Systems and method are disclosed for applying a query to an event stream by storing one or more event constraints; performing constraint aware complex event processing on the query and the event constraints; and optimizing the query at run time.
摘要:
There is provided a computer-implemented method of determining an execution ordering. An exemplary method comprises generating a directed graph based on a hierarchy. The hierarchy includes a plurality of pattern queries. The method also includes determining a minimum spanning tree of the directed graph. The method further includes determining an execution order of the pattern queries based on the minimum spanning tree.
摘要:
There is provided a computer-implemented method of determining an execution ordering. An exemplary method comprises generating a directed graph based on a hierarchy. The hierarchy includes a plurality of pattern queries. The method also includes determining a minimum spanning tree of the directed graph. The method further includes determining an execution order of the pattern queries based on the minimum spanning tree.
摘要:
Systems and method are disclosed for applying a query to an event stream by storing one or more event constraints; performing constraint aware complex event processing on the query and the event constraints; and optimizing the query at run time.