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ObjectGrid includes two powerful mechanisms for finding data in the ObjectGrid cache: the Object Query API and the ObjectGrid Stream Query API. With the ObjectGrid Query, you can perform traditional queries against ObjectMap and EntityManager data. With the ObjectGrid Stream Query API, you can perform continuous queries over streaming data.

• ObjectGrid Query API
  ObjectGrid provides a flexible query engine for retrieving entities using the EntityManager API and Java objects using the ObjectQuery API.  The query engine allows SELECT type queries over an entity or Object-based schema using the ObjectGrid query language.

• ObjectGrid Stream Query API
  A stream query is a continuous query over streaming data. ObjectGrid is a data caching product which stores data in maps. The streaming data are the in-flight data that stored or have been stored in ObjectGrid maps.

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