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Diffstat (limited to 'venv/lib/python3.11/site-packages/sqlalchemy/connectors/pyodbc.py')
| -rw-r--r-- | venv/lib/python3.11/site-packages/sqlalchemy/connectors/pyodbc.py | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/venv/lib/python3.11/site-packages/sqlalchemy/connectors/pyodbc.py b/venv/lib/python3.11/site-packages/sqlalchemy/connectors/pyodbc.py deleted file mode 100644 index f204d80..0000000 --- a/venv/lib/python3.11/site-packages/sqlalchemy/connectors/pyodbc.py +++ /dev/null @@ -1,249 +0,0 @@ -# connectors/pyodbc.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 - -from __future__ import annotations - -import re -from types import ModuleType -import typing -from typing import Any -from typing import Dict -from typing import List -from typing import Optional -from typing import Tuple -from typing import Union -from urllib.parse import unquote_plus - -from . import Connector -from .. import ExecutionContext -from .. import pool -from .. import util -from ..engine import ConnectArgsType -from ..engine import Connection -from ..engine import interfaces -from ..engine import URL -from ..sql.type_api import TypeEngine - -if typing.TYPE_CHECKING: - from ..engine.interfaces import IsolationLevel - - -class PyODBCConnector(Connector): - driver = "pyodbc" - - # this is no longer False for pyodbc in general - supports_sane_rowcount_returning = True - supports_sane_multi_rowcount = False - - supports_native_decimal = True - default_paramstyle = "named" - - fast_executemany = False - - # for non-DSN connections, this *may* be used to - # hold the desired driver name - pyodbc_driver_name: Optional[str] = None - - dbapi: ModuleType - - def __init__(self, use_setinputsizes: bool = False, **kw: Any): - super().__init__(**kw) - if use_setinputsizes: - self.bind_typing = interfaces.BindTyping.SETINPUTSIZES - - @classmethod - def import_dbapi(cls) -> ModuleType: - return __import__("pyodbc") - - def create_connect_args(self, url: URL) -> ConnectArgsType: - opts = url.translate_connect_args(username="user") - opts.update(url.query) - - keys = opts - - query = url.query - - connect_args: Dict[str, Any] = {} - connectors: List[str] - - for param in ("ansi", "unicode_results", "autocommit"): - if param in keys: - connect_args[param] = util.asbool(keys.pop(param)) - - if "odbc_connect" in keys: - connectors = [unquote_plus(keys.pop("odbc_connect"))] - else: - - def check_quote(token: str) -> str: - if ";" in str(token) or str(token).startswith("{"): - token = "{%s}" % token.replace("}", "}}") - return token - - keys = {k: check_quote(v) for k, v in keys.items()} - - dsn_connection = "dsn" in keys or ( - "host" in keys and "database" not in keys - ) - if dsn_connection: - connectors = [ - "dsn=%s" % (keys.pop("host", "") or keys.pop("dsn", "")) - ] - else: - port = "" - if "port" in keys and "port" not in query: - port = ",%d" % int(keys.pop("port")) - - connectors = [] - driver = keys.pop("driver", self.pyodbc_driver_name) - if driver is None and keys: - # note if keys is empty, this is a totally blank URL - util.warn( - "No driver name specified; " - "this is expected by PyODBC when using " - "DSN-less connections" - ) - else: - connectors.append("DRIVER={%s}" % driver) - - connectors.extend( - [ - "Server=%s%s" % (keys.pop("host", ""), port), - "Database=%s" % keys.pop("database", ""), - ] - ) - - user = keys.pop("user", None) - if user: - connectors.append("UID=%s" % user) - pwd = keys.pop("password", "") - if pwd: - connectors.append("PWD=%s" % pwd) - else: - authentication = keys.pop("authentication", None) - if authentication: - connectors.append("Authentication=%s" % authentication) - else: - connectors.append("Trusted_Connection=Yes") - - # if set to 'Yes', the ODBC layer will try to automagically - # convert textual data from your database encoding to your - # client encoding. This should obviously be set to 'No' if - # you query a cp1253 encoded database from a latin1 client... - if "odbc_autotranslate" in keys: - connectors.append( - "AutoTranslate=%s" % keys.pop("odbc_autotranslate") - ) - - connectors.extend(["%s=%s" % (k, v) for k, v in keys.items()]) - - return ((";".join(connectors),), connect_args) - - def is_disconnect( - self, - e: Exception, - connection: Optional[ - Union[pool.PoolProxiedConnection, interfaces.DBAPIConnection] - ], - cursor: Optional[interfaces.DBAPICursor], - ) -> bool: - if isinstance(e, self.dbapi.ProgrammingError): - return "The cursor's connection has been closed." in str( - e - ) or "Attempt to use a closed connection." in str(e) - else: - return False - - def _dbapi_version(self) -> interfaces.VersionInfoType: - if not self.dbapi: - return () - return self._parse_dbapi_version(self.dbapi.version) - - def _parse_dbapi_version(self, vers: str) -> interfaces.VersionInfoType: - m = re.match(r"(?:py.*-)?([\d\.]+)(?:-(\w+))?", vers) - if not m: - return () - vers_tuple: interfaces.VersionInfoType = tuple( - [int(x) for x in m.group(1).split(".")] - ) - if m.group(2): - vers_tuple += (m.group(2),) - return vers_tuple - - def _get_server_version_info( - self, connection: Connection - ) -> interfaces.VersionInfoType: - # NOTE: this function is not reliable, particularly when - # freetds is in use. Implement database-specific server version - # queries. - dbapi_con = connection.connection.dbapi_connection - version: Tuple[Union[int, str], ...] = () - r = re.compile(r"[.\-]") - for n in r.split(dbapi_con.getinfo(self.dbapi.SQL_DBMS_VER)): # type: ignore[union-attr] # noqa: E501 - try: - version += (int(n),) - except ValueError: - pass - return tuple(version) - - def do_set_input_sizes( - self, - cursor: interfaces.DBAPICursor, - list_of_tuples: List[Tuple[str, Any, TypeEngine[Any]]], - context: ExecutionContext, - ) -> None: - # the rules for these types seems a little strange, as you can pass - # non-tuples as well as tuples, however it seems to assume "0" - # for the subsequent values if you don't pass a tuple which fails - # for types such as pyodbc.SQL_WLONGVARCHAR, which is the datatype - # that ticket #5649 is targeting. - - # NOTE: as of #6058, this won't be called if the use_setinputsizes - # parameter were not passed to the dialect, or if no types were - # specified in list_of_tuples - - # as of #8177 for 2.0 we assume use_setinputsizes=True and only - # omit the setinputsizes calls for .executemany() with - # fast_executemany=True - - if ( - context.execute_style is interfaces.ExecuteStyle.EXECUTEMANY - and self.fast_executemany - ): - return - - cursor.setinputsizes( - [ - ( - (dbtype, None, None) - if not isinstance(dbtype, tuple) - else dbtype - ) - for key, dbtype, sqltype in list_of_tuples - ] - ) - - def get_isolation_level_values( - self, dbapi_connection: interfaces.DBAPIConnection - ) -> List[IsolationLevel]: - return super().get_isolation_level_values(dbapi_connection) + [ - "AUTOCOMMIT" - ] - - def set_isolation_level( - self, - dbapi_connection: interfaces.DBAPIConnection, - level: IsolationLevel, - ) -> None: - # adjust for ConnectionFairy being present - # allows attribute set e.g. "connection.autocommit = True" - # to work properly - - if level == "AUTOCOMMIT": - dbapi_connection.autocommit = True - else: - dbapi_connection.autocommit = False - super().set_isolation_level(dbapi_connection, level) |