[Fiware-data] CEP<->P/S

[Moltchanov Boris]

Dear All,

The conclusion after our AC would be that, as WP6, we need an intermediate component (converter, middleware, platform) performing the following functions between the CEP and P/S GEs:
-          Subscribe the P/S only for needed data/scope/entityIDs.
-          Enrich events containing the data, becoming the context, with entityIDs and scopes taken from events attribute;
-          Parse the context, becoming the events, and build the events integrating into the event structure the entityID and scopes as the attributes for feeding the CEP with the event coming from context P/S flow;
-          Converting JSON2XML and vice versa XML2JSON. This piece could be used also for other components , GEs, etc. in FI-WARE and UCPs.

Then, given the application (UCP or generically application domain) the P/S will be subscribed only to that context, which is relevant for the event generation for that UCP, or generally speaking application domain, by the CEP.

Best Regards,
Boris
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