Re: Wanted: jsonb on-disk representation documentation - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Wanted: jsonb on-disk representation documentation
Date
Msg-id 20140507185209.GN13397@awork2.anarazel.de
Whole thread Raw
In response to Re: Wanted: jsonb on-disk representation documentation  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Wanted: jsonb on-disk representation documentation  (Andrew Dunstan <andrew@dunslane.net>)
List pgsql-hackers
On 2014-05-07 14:48:51 -0400, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
> > * The jentry representation should be changed so it's possible to get the type
> >   of a entry without checking individual types. That'll make code like
> >   findJsonbValueFromSuperHeader() (well, whatever you've renamed it to)
> >   much easier to read. Preferrably so it an have the same values (after
> >   shifting/masking) ask the JBE variants. And it needs space for futher
> >   types (or representations thereof).
> 
> Further types?  What further types?  JSON seems unlikely to grow any
> other value types than what it's got.

I am not thinking about user level exposed types, but e.g. a hash/object
representation that allows duplicated keys and keeps the original
order. Because I am pretty sure that'll come.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services



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