[Fiware-ngsi] WORRIED: No progress in FI-WARE NGSI specs ?

[Juanjo Hierro]

Dear colleagues,

  I would like to share with you my concern/worries about work/progress regarding FI-WARE NGSI.

  It's been June 6th (almost one month) since I haven't seen any activity on the fiware-ngsi mailing list and this particularly worries me.  All we know that the FI-WARE NGSI API is one of the most relevant and therefore critical APIs that will be offered to UC projects.

  There are two major points for which I would like to receive your feedback:


  *   Status of FI-WARE NGSI-9 specifications:  what is the status ?  I haven't seen anything since a month ago and, actually, there is no reference to such spec on that part of the wiki where we are publishing the FI-WARE Open Specifications

  *   There is at least one aspect of the FI-WARE NGSI specs that I'm particularly worried that has not been a matter of discussion and it's rather critical IMHO: the way "restrictions" are specified and passed into requests of several operations (discoverContextAvailability, subscribeContextAvailability, queryContext, subscribeContext, updateContextSubscription).   According to the OMA specs, such restrictions should be formulated as "strings containing a XPath expression ... evaluated against ContextEntity structures" but ... is this going to be supported by TI's implementation of the Pub/Sub Broker GE ?   Shouldn't restrictions based on some language based/derived from the CQL (Context Query Language) be supported as an alternative to XPath ?

  I would rather appreciate an update regarding the first point and a response to questions formulated as second point ...

  Best regards,


-- Juanjo

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Product Development and Innovation (PDI) - Telefonica Digital
website: www.tid.es<http://www.tid.es>
email: jhierro at tid.es<mailto:jhierro at tid.es>
twitter: twitter.com/JuanjoHierro

FI-WARE (European Future Internet Core Platform) Chief Architect

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