app/django/db/backends/dummy/base.py
author Lennard de Rijk <ljvderijk@gmail.com>
Sun, 12 Jul 2009 14:03:35 +0200
changeset 2610 95949d4c45d9
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Add scope view for GradingSurveyGroup and set access checks. The access checks are now properly set for create, edit and show. To facilitate the scope view the access check have an extra check built in to ensure that a scope is actually present before cheking for an existing Program.

"""
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, *args, **kwargs):
        super(DatabaseWrapper, self).__init__(*args, **kwargs)

        self.features = BaseDatabaseFeatures()
        self.ops = DatabaseOperations()
        self.client = DatabaseClient()
        self.creation = BaseDatabaseCreation(self)
        self.introspection = DatabaseIntrospection(self)
        self.validation = BaseDatabaseValidation()

    def close(self):
        pass