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Re: [leshan-dev] Write operation

Yes, there are a lot of corner cases left open in the spec…

Okay, I can see the logic behind erasing non-mandatory resources when writing the complete object instance. I also agree with the sanity checks on the client side.

 

Thanks for the clarification

Matthias

 

 

From: leshan-dev-bounces@xxxxxxxxxxx [mailto:leshan-dev-bounces@xxxxxxxxxxx] On Behalf Of Simon Bernard
Sent: Mittwoch, 14. Januar 2015 17:09
To: leshan developer discussions
Subject: Re: [leshan-dev] Write operation

 

Hi,
  It's not really clear in the spec, but as I understand it, It's possible to make a Replace (PUT) of an object instance without all the resources.
  In this case, the missing resource will be erase (set to null). if one of the resource which should be set to null is mandatory, client should rise a METHOD_NOT_ALLOWED.
 
  The same request with the Partial Update(POST) should change only the specified resource.

  For now, in leshan-standalone, we could just send Replace. But, we should add a way to allow users to choose between Replace and Partial Update (I open an issue #58).
Simon

Le 14/01/2015 16:13, Kovatsch Matthias a écrit :

Hi all

 

Working on the LWM2M DevKit (https://github.com/mkovatsc/LWM2M-DevKit), I noticed that the write operation in Leshan always performs a replace via PUT, even if not all inputs were filled.

 

It does already transmit only the filled values, so only the POST is missing for a partial update.

 

Ciao

Matthias

 




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