Re: [core] draft-ietf-core-resource-directory is update atomic

Thanks Jim,

I try to answer below. I hope I understand the meaning correctly.

Jim Schaad schreef op 2017-08-11 18:34:
> I am going through and figuring out how to implement this specification 
> and
> I came up with a questions on how things work.
> 
> 1.  The document says that PATCH is supported.  What about iPATCH?
Good remark. The document should probably state that both are allowed 
but iPATCH is preferred.
> 
> 2. Are PATCH and POST update operations atomic?
The spec says that registrations need to be idempotent, that is not 
repeated for the other operations (but implied?).
The update changes the lt; you might argue that this is not an 
idempotent operation as the effects at a given time changes after a 
second invocation of the same update. Nevertheless, I would call it 
idempotent.
Idempotency => atomic? (as meaning: all or nothing)
> Is a partial update
> permitted or is that not allowed?
Partial updates are permitted for PATCH and also for POST under the 
conditions specified in section 5.4.1
Or is your argument that POST should not be used for partial updates.
> 
> Jim

Hope this helps.

peter
> 
> 
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