class RecordPointer(object):
readable(symbol=0, index=0, count=0, current=None)
def __init__(self, symbol, data_set):
self.__symbol = symbol
self.__data_set = data_set
self.__count = data_set.nrows
self.__index = 0
self.__book = Book(data_set[0])
self.__timestamp = self.__book.timestamp()
def more(self):
return self.__index < self.__count
def timestamp(self):
return self.__timestamp
def next(self):
if not self.__book:
return None
result = self.__book
self.__index += 1
if self.__index == self.__count:
self.__book = None
self.__timestamp = sys.maxint
else:
self.__book = Book(self.__data_set[self.__index])
self.__timestamp = self.__book.timestamp()
return result
def __str__(self):
return self.__symbol + ':' + str(self.timestamp())
def __init__(self, symbol, data_set):
self.__symbol = symbol
self.__data_set = data_set
self.__count = data_set.nrows
self.__index = 0
self.__book = Book(data_set[0])
self.__timestamp = self.__book.timestamp()
def next(self):
if not self.__book:
return None
result = self.__book
self.__index += 1
if self.__index == self.__count:
self.__book = None
self.__timestamp = sys.maxint
else:
self.__book = Book(self.__data_set[self.__index])
self.__timestamp = self.__book.timestamp()
return result