mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-23 16:23:41 +00:00
110 lines
3.4 KiB
Python
110 lines
3.4 KiB
Python
# Copyright (C) 2005-2023 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
|
|
|
|
r"""
|
|
.. dialect:: oracle+oracledb
|
|
:name: python-oracledb
|
|
:dbapi: oracledb
|
|
:connectstring: oracle+oracledb://user:pass@hostname:port[/dbname][?service_name=<service>[&key=value&key=value...]]
|
|
:url: https://oracle.github.io/python-oracledb/
|
|
|
|
python-oracledb is released by Oracle to supersede the cx_Oracle driver.
|
|
It is fully compatible with cx_Oracle and features both a "thin" client
|
|
mode that requires no dependencies, as well as a "thick" mode that uses
|
|
the Oracle Client Interface in the same way as cx_Oracle.
|
|
|
|
.. seealso::
|
|
|
|
:ref:`cx_oracle` - all of cx_Oracle's notes apply to the oracledb driver
|
|
as well.
|
|
|
|
Thick mode support
|
|
------------------
|
|
|
|
By default the ``python-oracledb`` is started in thin mode, that does not
|
|
require oracle client libraries to be installed in the system. The
|
|
``python-oracledb`` driver also support a "thick" mode, that behaves
|
|
similarly to ``cx_oracle`` and requires that Oracle Client Interface (OCI)
|
|
is installed.
|
|
|
|
To enable this mode, the user may call ``oracledb.init_oracle_client``
|
|
manually, or by passing the parameter ``thick_mode=True`` to
|
|
:func:`_sa.create_engine`. To pass custom arguments to ``init_oracle_client``,
|
|
like the ``lib_dir`` path, a dict may be passed to this parameter, as in::
|
|
|
|
engine = sa.create_engine("oracle+oracledb://...", thick_mode={
|
|
"lib_dir": "/path/to/oracle/client/lib", "driver_name": "my-app"
|
|
})
|
|
|
|
.. seealso::
|
|
|
|
https://python-oracledb.readthedocs.io/en/latest/api_manual/module.html#oracledb.init_oracle_client
|
|
|
|
|
|
.. versionadded:: 2.0.0 added support for oracledb driver.
|
|
|
|
""" # noqa
|
|
import re
|
|
|
|
from .cx_oracle import OracleDialect_cx_oracle as _OracleDialect_cx_oracle
|
|
from ... import exc
|
|
|
|
|
|
class OracleDialect_oracledb(_OracleDialect_cx_oracle):
|
|
supports_statement_cache = True
|
|
driver = "oracledb"
|
|
|
|
def __init__(
|
|
self,
|
|
auto_convert_lobs=True,
|
|
coerce_to_decimal=True,
|
|
arraysize=50,
|
|
encoding_errors=None,
|
|
thick_mode=None,
|
|
**kwargs,
|
|
):
|
|
|
|
super().__init__(
|
|
auto_convert_lobs,
|
|
coerce_to_decimal,
|
|
arraysize,
|
|
encoding_errors,
|
|
**kwargs,
|
|
)
|
|
|
|
if self.dbapi is not None and (
|
|
thick_mode or isinstance(thick_mode, dict)
|
|
):
|
|
kw = thick_mode if isinstance(thick_mode, dict) else {}
|
|
self.dbapi.init_oracle_client(**kw)
|
|
|
|
@classmethod
|
|
def import_dbapi(cls):
|
|
import oracledb
|
|
|
|
return oracledb
|
|
|
|
@classmethod
|
|
def is_thin_mode(cls, connection):
|
|
return connection.connection.dbapi_connection.thin
|
|
|
|
def _load_version(self, dbapi_module):
|
|
version = (0, 0, 0)
|
|
if dbapi_module is not None:
|
|
m = re.match(r"(\d+)\.(\d+)(?:\.(\d+))?", dbapi_module.version)
|
|
if m:
|
|
version = tuple(
|
|
int(x) for x in m.group(1, 2, 3) if x is not None
|
|
)
|
|
self.oracledb_ver = version
|
|
if self.oracledb_ver < (1,) and self.oracledb_ver > (0, 0, 0):
|
|
raise exc.InvalidRequestError(
|
|
"oracledb version 1 and above are supported"
|
|
)
|
|
|
|
|
|
dialect = OracleDialect_oracledb
|