Re: [Json] [apps-discuss] merge-patch in APPSA and i-json in JSON

[John Cowan <[e-mail]>]

Paul Hoffman scripsit:

> > - Is merge operation defined for target JSON that isn't i-json?
> 
> Yes. The merge operation is defined for all targets, regardless of
> the targets' profile of JSON.

Actually, it isn't.  It is far from clear from
draft-ietf-appsawg-json-merge-patch-04 what to do if a key appearing in
the patch matches more than one key appearing in the target.  This has
nothing to do with I-JSON as such, but is a deficiency in the merge-patch
algorithm, the relevant part of which I reproduce here:

       for each Key/Value pair in Patch:
         if Value is null:
           if Key exists in Target:
             remove the Key/Value pair from Target
         else:
           Target[Key] = MergePatch(Target[Key], Value)

What is meant by "the Key/Value pair" if there is more than one?
Are all such pairs to be removed or mutated, or only one of them?

-- 
John Cowan          http://www.ccil.org/~cowan        [e-mail]
What asininity could I have uttered that they applaud me thus?
        --Phocion, Greek orator