django.db.backends.base.base.BaseDatabaseWrapper

Undocumented

Undocumented

Backends can override this method if they can apply constraint checking (e.g. via "SET CONSTRAINTS ALL IMMEDIATE"). Should raise an IntegrityError if any invalid foreign key references are encountered.

Raise an error if the database version isn't supported by this version of Django.

Undocumented

Return a cursor that tries to avoid caching in the database (if supported by the database), otherwise return a regular cursor.

Reset the counter used to generate unique savepoint ids in this thread.

Close the connection to the database.

Close existing connection if it fails a health check.

Close the current connection if unrecoverable errors have occurred or if it outlived its maximum age.

Commit a transaction and reset the dirty flag.

Connect to the database. Assume that the connection is closed.

Disable foreign key constraint checking.

Return a copy of this connection. For tests that require two connections to the same database.

Create a cursor. Assume that a connection is established.

Create a cursor, opening a connection if necessary.

Undocumented

Backends can implement as needed to temporarily disable foreign key constraint checking. Should return True if the constraints were disabled and will need to be reenabled.

Backends can implement as needed to re-enable foreign key constraint checking.

Guarantee that a connection to the database is established.

Ensure the connection's timezone is set to `self.timezone_name` and return whether it changed or not.

Return a context manager under which the wrapper is applied to suitable database query executions.

Get the autocommit state.

Return a dict of parameters suitable for get_new_connection.

Return a tuple of the database's version.

Open a connection to the database.

Get the "needs rollback" flag -- for *advanced use* only.

Undocumented

Initialize the database connection settings.

Test if the database connection is usable. This method may assume that self.connection is not None. Actual implementations should take care not to raise exceptions as that may prevent Django from recycling unusable connections.

Create a cursor without debug logging.

Create a cursor that logs all queries in self.queries_log.

Undocumented

Hook to do any database check or preparation, generally called before migrating a project or an app.

Roll back a transaction and reset the dirty flag.

Undocumented

Create a savepoint inside the current transaction. Return an identifier for the savepoint that will be used for the subsequent rollback or commit. Do nothing if savepoints are not supported.

Release a savepoint. Do nothing if savepoints are not supported.

Roll back to a savepoint. Do nothing if savepoints are not supported.

Return a new instance of this backend's SchemaEditor.

Enable or disable autocommit. The usual way to start a transaction is to turn autocommit off. SQLite does not properly start a transaction when disabling autocommit. To avoid this buggy behavior and to actually enter a new transaction, an explicit BEGIN is required. Using force_begin_transaction_with_broken_autocommit=True will issue an explicit BEGIN with SQLite. This option will be ignored for other backends.

Set or unset the "needs rollback" flag -- for *advanced use* only.

Context manager that ensures that a connection is established, and if it opened one, closes it to avoid leaving a dangling connection. This is useful for operations outside of the request-response cycle. Provide a cursor: with self.temporary_connection() as cursor: ...

Raise an error if an atomic block is active.

Undocumented

Validate that the connection isn't accessed by another thread than the one which originally created it, unless the connection was explicitly authorized to be shared between threads (via the `inc_thread_sharing()` method). Raise an exception if the validation fails.