def save(self):
''' Save the list of object in bulk '''
if len(self) > 0:
cls = self.__getitem__(0).__class__
if not hasattr(cls, 'getClassName'):
raise Exception("Objects must extend BaseObject")
col = Database._get_collection(cls.getClassName())
objs = list()
for o in self:
doc = o.toDict()
doc['_id'] = o.getId()
del doc['id']
objs.append(doc)
col.insert(objs)
