"""
Dummy database backend for Django.
Django uses this if the database ENGINE setting is empty (None or empty string).
Each of these API functions, except connection.close(), raises
ImproperlyConfigured.
"""
from django.core.exceptions import ImproperlyConfigured
from django.db.backends import *
from django.db.backends.creation import BaseDatabaseCreation
def complain(*args, **kwargs):
raise ImproperlyConfigured("You haven't set the database ENGINE setting yet.")
def ignore(*args, **kwargs):
pass
class DatabaseError(Exception):
pass
class IntegrityError(DatabaseError):
pass
class DatabaseOperations(BaseDatabaseOperations):
quote_name = complain
class DatabaseClient(BaseDatabaseClient):
runshell = complain
class DatabaseIntrospection(BaseDatabaseIntrospection):
get_table_list = complain
get_table_description = complain
get_relations = complain
get_indexes = complain
class DatabaseWrapper(object):
operators = {}
cursor = complain
_commit = complain
_rollback = ignore
def __init__(self, settings_dict, alias, *args, **kwargs):
self.features = BaseDatabaseFeatures()
self.ops = DatabaseOperations()
self.client = DatabaseClient(self)
self.creation = BaseDatabaseCreation(self)
self.introspection = DatabaseIntrospection(self)
self.validation = BaseDatabaseValidation(self)
self.settings_dict = settings_dict
self.alias = alias
def close(self):
pass
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