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authorcyfraeviolae <cyfraeviolae>2024-04-03 03:10:44 -0400
committercyfraeviolae <cyfraeviolae>2024-04-03 03:10:44 -0400
commit6d7ba58f880be618ade07f8ea080fe8c4bf8a896 (patch)
treeb1c931051ffcebd2bd9d61d98d6233ffa289bbce /venv/lib/python3.11/site-packages/sqlalchemy/dialects/sqlite/json.py
parent4f884c9abc32990b4061a1bb6997b4b37e58ea0b (diff)
venv
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+# dialects/sqlite/json.py
+# Copyright (C) 2005-2024 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+# mypy: ignore-errors
+
+from ... import types as sqltypes
+
+
+class JSON(sqltypes.JSON):
+ """SQLite JSON type.
+
+ SQLite supports JSON as of version 3.9 through its JSON1_ extension. Note
+ that JSON1_ is a
+ `loadable extension <https://www.sqlite.org/loadext.html>`_ and as such
+ may not be available, or may require run-time loading.
+
+ :class:`_sqlite.JSON` is used automatically whenever the base
+ :class:`_types.JSON` datatype is used against a SQLite backend.
+
+ .. seealso::
+
+ :class:`_types.JSON` - main documentation for the generic
+ cross-platform JSON datatype.
+
+ The :class:`_sqlite.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 wrapped in the ``JSON_QUOTE`` function at the database level.
+ Extracted values are quoted in order to ensure that the results are
+ always JSON string values.
+
+
+ .. versionadded:: 1.3
+
+
+ .. _JSON1: https://www.sqlite.org/json1.html
+
+ """
+
+
+# Note: these objects currently match exactly those of MySQL, however since
+# these are not generalizable to all JSON implementations, remain separately
+# implemented for each dialect.
+class _FormatTypeMixin:
+ def _format_value(self, value):
+ raise NotImplementedError()
+
+ def bind_processor(self, dialect):
+ super_proc = self.string_bind_processor(dialect)
+
+ def process(value):
+ value = self._format_value(value)
+ if super_proc:
+ value = super_proc(value)
+ return value
+
+ return process
+
+ def literal_processor(self, dialect):
+ super_proc = self.string_literal_processor(dialect)
+
+ def process(value):
+ value = self._format_value(value)
+ if super_proc:
+ value = super_proc(value)
+ return value
+
+ return process
+
+
+class JSONIndexType(_FormatTypeMixin, sqltypes.JSON.JSONIndexType):
+ def _format_value(self, value):
+ if isinstance(value, int):
+ value = "$[%s]" % value
+ else:
+ value = '$."%s"' % value
+ return value
+
+
+class JSONPathType(_FormatTypeMixin, sqltypes.JSON.JSONPathType):
+ def _format_value(self, value):
+ return "$%s" % (
+ "".join(
+ [
+ "[%s]" % elem if isinstance(elem, int) else '."%s"' % elem
+ for elem in value
+ ]
+ )
+ )