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Transforms for jsonb to PL/Python

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Add a new contrib module jsonb_plpython that provide a transform between
jsonb and PL/Python.  jsonb values are converted to appropriate Python
types such as dicts and lists, and vice versa.

Author: Anthony Bykov <a.bykov@postgrespro.ru>
Reviewed-by: Aleksander Alekseev <a.alekseev@postgrespro.ru>
Reviewed-by: Nikita Glukhov <n.gluhov@postgrespro.ru>
This commit is contained in:
Peter Eisentraut
2018-03-28 08:32:43 -04:00
parent a437551a22
commit 3f44e3db72
13 changed files with 1155 additions and 2 deletions
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19
contrib/jsonb_plpython/jsonb_plpythonu--1.0.sql Normal file
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/* contrib/jsonb_plpython/jsonb_plpythonu--1.0.sql */
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION jsonb_plpythonu" to load this file. \quit
CREATE FUNCTION jsonb_to_plpython(val internal) RETURNS internal
LANGUAGE C STRICT IMMUTABLE
AS 'MODULE_PATHNAME';
CREATE FUNCTION plpython_to_jsonb(val internal) RETURNS jsonb
LANGUAGE C STRICT IMMUTABLE
AS 'MODULE_PATHNAME';
CREATE TRANSFORM FOR jsonb LANGUAGE plpythonu (
FROM SQL WITH FUNCTION jsonb_to_plpython(internal),
TO SQL WITH FUNCTION plpython_to_jsonb(internal)
);
COMMENT ON TRANSFORM FOR jsonb LANGUAGE plpythonu IS 'transform between jsonb and Python';