Get the user input, including stock name and time interval now; Send the stock name to DataFeedManager; Send the time interval to the Alarm;

DataFeedManager, Alarm

Later on, we plan to add the 'log in' function, which will introduce another 'authentication' server and the whole log-in process;

Also we plan to support multiple stocks and the correspondent time intervals as well;

Establish and maintain a 'robust' connection between the application and the DB server; Get 'stock' name from the user input; Query for the information of the certain stock requested by user; Receive all the packages from the DB server; Send all the stock information to the interpreter;

UserInterface, DataFeedInterpreter

Interpret the raw data from the DataFeedManager; Send the price change to the ResultConverter; When requested by 3PBController, send the current high/low price to the controller;

DataFeedManger, ResultConverter, 3PBController

When signaled by the Alarm, request the high/low price at the end of this period from the DataFeedInterpreter; Send the prices to the 3PBAlgorithm and get the result from it; Send the updated 3PB from the algorithm to the ResultConverter;

Alarm, DataFeedInterpreter, 3PBAlgorithm, ResultConverter

Get the status of the end of the time slice, calculate the new 3PB and send it back to the controller;

3PBController

Get the price change or updated 3PB, generate certain kind of display results and send them to the UserInterface;

DataFeedInterpreter, 3PBController, UserInterface

In the later version, we plan to allow the user to choose different methods to display the results. We will use the STRATEGY pattern to implement this

Get the time slice length from the UserInterface; Once the current time slice passed by, signal the 3PBController to update the 3PB if necessary;

UserInterface, 3PBController