[Fiware-ngsi] DiscoverContextAvailability

Bisztray, Denes (NSN - HU/Budapest) denes.bisztray at nsn.com
Tue Apr 17 15:55:35 CEST 2012


Dear All,

The second problematic part from NGSI-9 is the Discover Context Availability

If we check, the request contains an EntityId list as well as an Attribute List.
-	There is already a problem: attributes are identified by ID and Name. Here, the list is just an array of String, containing the names only. 

However, there is the response, which introduces more ambiguity. The response contains a LIST of ContextRegistrationResponse. This ContextRegistrationResponse is similar to the ContextEntityResponse, but contains a ContextRegistration with a StatusCode. And here comes the problem:
-	The ContextRegistration contains a set of EntityIds and Attributes. How do we order the response by?
-	i.e.  DiscoverContextAvailabilityResponse contains 0..n ContextRegistrationResponse contains 0..m ContextRegistration. But we gave one homogenious list of EntityIDs. How to order them?

Best,
Dénes

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