diff options
Diffstat (limited to 'lib/python2.7/site-packages/django/db/__init__.py')
-rw-r--r-- | lib/python2.7/site-packages/django/db/__init__.py | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/lib/python2.7/site-packages/django/db/__init__.py b/lib/python2.7/site-packages/django/db/__init__.py deleted file mode 100644 index 2421dde..0000000 --- a/lib/python2.7/site-packages/django/db/__init__.py +++ /dev/null @@ -1,96 +0,0 @@ -import warnings - -from django.core import signals -from django.db.utils import (DEFAULT_DB_ALIAS, - DataError, OperationalError, IntegrityError, InternalError, - ProgrammingError, NotSupportedError, DatabaseError, - InterfaceError, Error, - load_backend, ConnectionHandler, ConnectionRouter) -from django.utils.functional import cached_property - -__all__ = ('backend', 'connection', 'connections', 'router', 'DatabaseError', - 'IntegrityError', 'DEFAULT_DB_ALIAS') - -connections = ConnectionHandler() - -router = ConnectionRouter() - -# `connection`, `DatabaseError` and `IntegrityError` are convenient aliases -# for backend bits. - -# DatabaseWrapper.__init__() takes a dictionary, not a settings module, so -# we manually create the dictionary from the settings, passing only the -# settings that the database backends care about. Note that TIME_ZONE is used -# by the PostgreSQL backends. -# We load all these up for backwards compatibility, you should use -# connections['default'] instead. -class DefaultConnectionProxy(object): - """ - Proxy for accessing the default DatabaseWrapper object's attributes. If you - need to access the DatabaseWrapper object itself, use - connections[DEFAULT_DB_ALIAS] instead. - """ - def __getattr__(self, item): - return getattr(connections[DEFAULT_DB_ALIAS], item) - - def __setattr__(self, name, value): - return setattr(connections[DEFAULT_DB_ALIAS], name, value) - - def __delattr__(self, name): - return delattr(connections[DEFAULT_DB_ALIAS], name) - -connection = DefaultConnectionProxy() - -class DefaultBackendProxy(object): - """ - Temporary proxy class used during deprecation period of the `backend` module - variable. - """ - @cached_property - def _backend(self): - warnings.warn("Accessing django.db.backend is deprecated.", - PendingDeprecationWarning, stacklevel=2) - return load_backend(connections[DEFAULT_DB_ALIAS].settings_dict['ENGINE']) - - def __getattr__(self, item): - return getattr(self._backend, item) - - def __setattr__(self, name, value): - return setattr(self._backend, name, value) - - def __delattr__(self, name): - return delattr(self._backend, name) - -backend = DefaultBackendProxy() - -def close_connection(**kwargs): - warnings.warn( - "close_connection is superseded by close_old_connections.", - PendingDeprecationWarning, stacklevel=2) - # Avoid circular imports - from django.db import transaction - for conn in connections: - # If an error happens here the connection will be left in broken - # state. Once a good db connection is again available, the - # connection state will be cleaned up. - transaction.abort(conn) - connections[conn].close() - -# Register an event to reset saved queries when a Django request is started. -def reset_queries(**kwargs): - for conn in connections.all(): - conn.queries = [] -signals.request_started.connect(reset_queries) - -# Register an event to reset transaction state and close connections past -# their lifetime. NB: abort() doesn't do anything outside of a transaction. -def close_old_connections(**kwargs): - for conn in connections.all(): - # Remove this when the legacy transaction management goes away. - try: - conn.abort() - except DatabaseError: - pass - conn.close_if_unusable_or_obsolete() -signals.request_started.connect(close_old_connections) -signals.request_finished.connect(close_old_connections) |