| From: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com> |
|---|---|
| To: | Nikita Glukhov <n(dot)gluhov(at)postgrespro(dot)ru> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, David Fetter <david(at)fetter(dot)org>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Oleksandr Shulgin <oleksandr(dot)shulgin(at)zalando(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Oleg Bartunov <obartunov(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, David Steele <david(at)pgmasters(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] [PATCH] Generic type subscripting |
| Date: | 2019-12-19 14:20:30 |
| Message-ID: | 20191219142030.uc6en2ci3rx2jc4c@localhost |
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| Thread: | |
| Lists: | pgsql-hackers |
> On Sun, Nov 10, 2019 at 01:32:08PM +0100, Dmitry Dolgov wrote:
>
> > I had to write new assignment logic reusing only some parts of setPath(),
> > because the loop in setPath() should be broken on every level. During this
> > process, I decided to implement assignment behavior similar to PostgreSQL's
> > array behavior and added two new features:
> > - creation of jsonb arrays/objects container from NULL values
> > - appending/prepending array elements on the specified position, gaps filled
> > with nulls (JavaScript has similar behavior)
>
> What is the reason for the last one?
I've splitted the last patch into polymorphic itself and jsonb array
behaviour changes, since I'm afraid it could be a questionable part.
| Attachment | Content-Type | Size |
|---|---|---|
| v29-0001-Base-implementation-of-subscripting-mechanism.patch | text/x-diff | 48.2 KB |
| v29-0002-Subscripting-for-array.patch | text/x-diff | 24.8 KB |
| v29-0003-Subscripting-for-jsonb.patch | text/x-diff | 33.4 KB |
| v29-0004-Subscripting-documentation.patch | text/x-diff | 20.0 KB |
| v29-0005-Polymorphic-subscripting.patch | text/x-diff | 61.6 KB |
| v29-0006-Filling-gaps-in-jsonb-arrays.patch | text/x-diff | 8.5 KB |
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