[Fiware-ngsi] proposed expansion of NGSI-10

[Tobias Jacobs]

Hi Denes,

Thanks a lot for your propositions.

We have also discussed adding convenience functions for the put-operation a couple of days ago.
One question is if the update message should really be a ContextElement (of ContextAttribute), or rather a full UpdateContextRequest, which also contains information on the updateActionType. One possibility would be to define a default updateActionType and give the possibility to change it via a parameter in the URI.

Why would you prefer POST over PUT for subscription updates? From my point of view, PUT the natural verb to do this. Subscription updates are also idempotent, as expected from PUT.

Best
Tobias

From: fiware-ngsi-bounces at lists.fi-ware.eu [mailto:fiware-ngsi-bounces at lists.fi-ware.eu] On Behalf Of Bisztray, Denes (NSN - HU/Budapest)
Sent: Mittwoch, 8. Februar 2012 09:52
To: fiware-ngsi at lists.fi-ware.eu
Subject: [Fiware-ngsi] proposed expansion of NGSI-10


Dear all,

 I checked the RESTful binding proposal created by Tobias an Laurent. I completely understand that the NGSI-10 standard allows only a mass-update of the context entities via the updateContextRequest.

  What I propose is simple addition of update operations on the individual context elements and attributes of context elements.

-       Add a POST method to the Individual Context Element (/contextElements/{contextElementID})

-       Add a POST method to the Attribute of individual context element (/contextElements/{contextElementID}/{attributeName})

The post operation message would include the UpdateAction and note a ContextElementList, but the updated ContextElement. In case of a ContextAttribute, the updated ContextAttribute.

Correspondingly the output message would contain the ErrorCode and one ContextElementResponse structure.

This is an addition to the standard, and I think this would ease the context information update process. What is your opinion?

Irrelevant comment: I also agree that the subscription update should be a POST method instead of the current PUT.

Best,

Dénes
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.fiware.org/private/fiware-ngsi/attachments/20120208/089e2d2d/attachment.html>