def __save__(self):
# inserts an instance into file
# or updates existing tuple if instance's id is specified
# and it exists in file
storage = FileHandler("data")
data = self.__getData__()
instances = []
lastID = 0
print data
for i in range(0, len(data)/len(self.__fields__)):
instance = self.__class__()
instance.__model__(data[i*len(self.__fields__):])
instances.append(instance)
if int(instance.id) > lastID:
lastID = int(instance.id)
if not hasattr(self, "id"):
self.id = lastID+1
instances.append(self)
else:
for i in instances:
if (i.id == self.id):
i = self
break
newData = []
for instance in instances:
newData.extend([
instance.__getattribute__(j) for j in self.__fields__
])
print newData
storage.write_page(newData, self.__page__)
def __getData__(cls):
# gets the data from file in list
# TODO storage name should be defined in conf file
storage = FileHandler("data")
dataIterator = storage.read_page()
data = []
data = dataIterator.next()
i = 0
while ((i < len(data)) and (data[i] != cls.__name__)):
i += 2
if i >= len(data):
print ("\n ERROR:table \""
"%s \" was not declared in this scope\n"
% cls.__name__)
return
cls.__page__ = int(data[i+1])
data = storage.read_page(int(data[i+1])).next()
return data
