def setdefault(self, key, value=None):
real_value = self.__get_helper(key)
if real_value is None:
self.__setitem__(key, value)
return value
else:
return from_db(real_value[0])
def __getitem__(self, index):
if index < 0:
sql = self.__get_element_from_back
else:
sql = self.__get_element_from_front
cursor = self.conn.execute(sql, (index,))
result = cursor.fetchone()
if result is None:
raise IndexError, index
return from_db(result[0])
def __getitem__(self, key):
result = self.__get_helper(key)
if result is None:
raise KeyError(key)
return from_db(result[0])
def transform(self, result):
return from_db(result[0])
def get(self, key, defaultval=None):
result = self.__get_helper(key)
if result is None:
return defaultval
return from_db(result[0])
def __get_helper(self, sql, *args):
cursor = self.conn.execute(sql, args)
result = cursor.fetchone()
if result is None:
raise IndexError, index
return from_db(result[0])
def next(self):
result = self.cursor.fetchone()
if result is None:
raise StopIteration
else:
return from_db(result[0])