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# mysql/json.py
# Copyright (C) 2005-2016 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
from __future__ import absolute_import
import json
from ...sql import elements
from ... import types as sqltypes
from ... import util
class JSON(sqltypes.JSON):
"""MySQL JSON type.
MySQL supports JSON as of version 5.7. Note that MariaDB does **not**
support JSON at the time of this writing.
The :class:`.mysql.JSON` type supports persistence of JSON values
as well as the core index operations provided by :class:`.types.JSON`
datatype, by adapting the operations to render the ``JSON_EXTRACT``
function at the database level.
.. versionadded:: 1.1
"""
pass
class JSONIndexType(sqltypes.JSON.JSONIndexType):
def bind_processor(self, dialect):
def process(value):
if isinstance(value, int):
return "$[%s]" % value
else:
return '$."%s"' % value
return process
class JSONPathType(sqltypes.JSON.JSONPathType):
def bind_processor(self, dialect):
def process(value):
return "$%s" % (
"".join([
"[%s]" % elem if isinstance(elem, int)
else '."%s"' % elem for elem in value
])
)
return process
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