Re: jsonb and nested hstore

On 01/30/2014 12:34 PM, Merlin Moncure wrote:
> On Thu, Jan 30, 2014 at 9:50 AM, Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>>>> Now, if we're agreed on that, I then also wonder if the 'as_text'
>>>> argument needs to exist at all for the populate functions except for
>>>> backwards compatibility on the json side (not jsonb). For non-complex
>>>> structures it does best effort casting anyways so the flag is moot.
>>>>
>>> Well, I could certainly look at making the populate_record{set} and
>>> to_record{set} logic handle types that are arrays or composites inside the
>>> record. It might not be terribly hard to do - not sure.
>> A quick analysis suggests that this is fixable with fairly minimal
>> disturbance in the jsonb case. In the json case it would probably involve
>> reparsing the inner json. That's probably doable, because the routines are
>> all reentrant, but not likely to be terribly efficient. It will also be a
>> deal more work.
> Right. Also the text json functions are already in the wild anyways
> -- that's not in the scope of this patch so if they need to be fixed
> that could be done later.
>
> ISTM then the right course of action is to point jsonb 'populate'
> variants at hstore implementation, not the text json one and remove
> the 'as text' argument. Being able to ditch that argument is the main
> reason why I think this should be handled now (not forcing hstore
> dependency to handle complex json is gravy).

We can't reference any hstore code in jsonb. There is no guarantee that
hstore will even be loaded.

We'd have to move that code from hstore to jsonb_support.c and then make
hstore refer to it.

cheers

andrew