Remnants/AdministrationItDepartmens
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Проверка 09.02.2025

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MoonTestUse1
2025-02-09 01:11:49 +06:00
parent ce52f8a23a
commit 0aa3ef8fc2
5827 changed files with 14316 additions and 1906434 deletions
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84
venv/Lib/site-packages/sqlalchemy/engine/base.py
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@@ -1,5 +1,5 @@
# engine/base.py
# Copyright (C) 2005-2024 the SQLAlchemy authors and contributors
# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
@@ -109,6 +109,7 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
"""
dialect: Dialect
dispatch: dispatcher[ConnectionEventsTarget]
_sqla_logger_namespace = "sqlalchemy.engine.Connection"
@@ -173,13 +174,9 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
if self._has_events or self.engine._has_events:
self.dispatch.engine_connect(self)
@util.memoized_property
def _message_formatter(self) -> Any:
if "logging_token" in self._execution_options:
token = self._execution_options["logging_token"]
return lambda msg: "[%s] %s" % (token, msg)
else:
return None
# this can be assigned differently via
# characteristics.LoggingTokenCharacteristic
_message_formatter: Any = None
def _log_info(self, message: str, *arg: Any, **kw: Any) -> None:
fmt = self._message_formatter
@@ -250,6 +247,7 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
yield_per: int = ...,
insertmanyvalues_page_size: int = ...,
schema_translate_map: Optional[SchemaTranslateMapType] = ...,
preserve_rowcount: bool = False,
**opt: Any,
) -> Connection: ...
@@ -380,12 +378,11 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
:param stream_results: Available on: :class:`_engine.Connection`,
:class:`_sql.Executable`.
Indicate to the dialect that results should be
"streamed" and not pre-buffered, if possible. For backends
such as PostgreSQL, MySQL and MariaDB, this indicates the use of
a "server side cursor" as opposed to a client side cursor.
Other backends such as that of Oracle may already use server
side cursors by default.
Indicate to the dialect that results should be "streamed" and not
pre-buffered, if possible. For backends such as PostgreSQL, MySQL
and MariaDB, this indicates the use of a "server side cursor" as
opposed to a client side cursor. Other backends such as that of
Oracle Database may already use server side cursors by default.
The usage of
:paramref:`_engine.Connection.execution_options.stream_results` is
@@ -490,6 +487,18 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
:ref:`schema_translating`
:param preserve_rowcount: Boolean; when True, the ``cursor.rowcount``
attribute will be unconditionally memoized within the result and
made available via the :attr:`.CursorResult.rowcount` attribute.
Normally, this attribute is only preserved for UPDATE and DELETE
statements. Using this option, the DBAPIs rowcount value can
be accessed for other kinds of statements such as INSERT and SELECT,
to the degree that the DBAPI supports these statements. See
:attr:`.CursorResult.rowcount` for notes regarding the behavior
of this attribute.
.. versionadded:: 2.0.28
.. seealso::
:meth:`_engine.Engine.execution_options`
@@ -791,7 +800,6 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
with conn.begin() as trans:
conn.execute(table.insert(), {"username": "sandy"})
The returned object is an instance of :class:`_engine.RootTransaction`.
This object represents the "scope" of the transaction,
which completes when either the :meth:`_engine.Transaction.rollback`
@@ -897,7 +905,7 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
trans.rollback() # rollback to savepoint
# outer transaction continues
connection.execute( ... )
connection.execute(...)
If :meth:`_engine.Connection.begin_nested` is called without first
calling :meth:`_engine.Connection.begin` or
@@ -907,11 +915,11 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
with engine.connect() as connection: # begin() wasn't called
with connection.begin_nested(): will auto-"begin()" first
connection.execute( ... )
with connection.begin_nested(): # will auto-"begin()" first
connection.execute(...)
# savepoint is released
connection.execute( ... )
connection.execute(...)
# explicitly commit outer transaction
connection.commit()
@@ -1728,21 +1736,20 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
conn.exec_driver_sql(
"INSERT INTO table (id, value) VALUES (%(id)s, %(value)s)",
[{"id":1, "value":"v1"}, {"id":2, "value":"v2"}]
[{"id": 1, "value": "v1"}, {"id": 2, "value": "v2"}],
)
Single dictionary::
conn.exec_driver_sql(
"INSERT INTO table (id, value) VALUES (%(id)s, %(value)s)",
dict(id=1, value="v1")
dict(id=1, value="v1"),
)
Single tuple::
conn.exec_driver_sql(
"INSERT INTO table (id, value) VALUES (?, ?)",
(1, 'v1')
"INSERT INTO table (id, value) VALUES (?, ?)", (1, "v1")
)
.. note:: The :meth:`_engine.Connection.exec_driver_sql` method does
@@ -1831,10 +1838,7 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
context.pre_exec()
if context.execute_style is ExecuteStyle.INSERTMANYVALUES:
return self._exec_insertmany_context(
dialect,
context,
)
return self._exec_insertmany_context(dialect, context)
else:
return self._exec_single_context(
dialect, context, statement, parameters
@@ -2018,7 +2022,13 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
if self._echo:
stats = context._get_cache_stats() + " (insertmanyvalues)"
preserve_rowcount = context.execution_options.get(
"preserve_rowcount", False
)
rowcount = 0
for imv_batch in dialect._deliver_insertmanyvalues_batches(
self,
cursor,
str_statement,
effective_parameters,
@@ -2039,6 +2049,7 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
imv_batch.replaced_parameters,
None,
context,
is_sub_exec=True,
)
sub_stmt = imv_batch.replaced_statement
@@ -2128,9 +2139,15 @@ class Connection(ConnectionEventsTarget, inspection.Inspectable["Inspector"]):
context.executemany,
)
if preserve_rowcount:
rowcount += imv_batch.current_batch_size
try:
context.post_exec()
if preserve_rowcount:
context._rowcount = rowcount # type: ignore[attr-defined]
result = context._setup_result_proxy()
except BaseException as e:
@@ -2494,6 +2511,7 @@ class Transaction(TransactionalContext):
:class:`_engine.Connection`::
from sqlalchemy import create_engine
engine = create_engine("postgresql+psycopg2://scott:tiger@localhost/test")
connection = engine.connect()
trans = connection.begin()
@@ -3071,10 +3089,10 @@ class Engine(
shards = {"default": "base", "shard_1": "db1", "shard_2": "db2"}
@event.listens_for(Engine, "before_cursor_execute")
def _switch_shard(conn, cursor, stmt,
params, context, executemany):
shard_id = conn.get_execution_options().get('shard_id', "default")
def _switch_shard(conn, cursor, stmt, params, context, executemany):
shard_id = conn.get_execution_options().get("shard_id", "default")
current_shard = conn.info.get("current_shard", None)
if current_shard != shard_id:
@@ -3200,9 +3218,7 @@ class Engine(
E.g.::
with engine.begin() as conn:
conn.execute(
text("insert into table (x, y, z) values (1, 2, 3)")
)
conn.execute(text("insert into table (x, y, z) values (1, 2, 3)"))
conn.execute(text("my_special_procedure(5)"))
Upon successful operation, the :class:`.Transaction`
@@ -3218,7 +3234,7 @@ class Engine(
:meth:`_engine.Connection.begin` - start a :class:`.Transaction`
for a particular :class:`_engine.Connection`.
"""
""" # noqa: E501
with self.connect() as conn:
with conn.begin():
yield conn