mogrify and indent features for jsonb

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: mogrify and indent features for jsonb
Date: 2015-02-15 03:06:07
Message-ID: 54E00D1F.9060101@dunslane.net
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Attached is a patch to provide a number of very useful facilities to
jsonb that people have asked for. These are based on work by Dmitry
Dolgov in his jsonbx extension, but I take responsibility for any bugs.

The facilities are:

new operations:

concatenation: jsonb || jsonb -> jsonb
deletion: jsonb - text -> jsonb
deletion: jsonb - int -> text

new functions:

produce indented text: jsonb_indent(jsonb) -> text
change an element at a path: jsonb_replace(jsonb, text[], jsonb) -> jsonb.

It would be relatively trivial to add:

delete an element at a path: jsonb_delete(jsonb, text[]) -> json

and I think we should do that for the sake of completeness.

The docs might need a little extra work, and the indent code definitely
needs work, which I hope to complete in the next day or two, but I
wanted to put a stake in the ground.

cheers

andrew

Attachment Content-Type Size
jsonbxcore1.patch text/x-patch 50.4 KB

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