Aspect-Oriented Software Development (236601) 1 Home Assignment (what, where and when)

Aspect-Oriented Software Development (236601) 2 What to do? Full description – on course web page Given : 3 base systems [see the web page] Create : at least 6 aspects (2 for each system) Work in pairs You are allowed to add functionality to the base systems in order to enable (and justify) adding your aspects. [but do not have to]

Aspect-Oriented Software Development (236601) 3 Requirements At least one aspect of each category (spectative, regulative, weakly invasive, strongly invasive) At least one “aspect over another aspect” At least one “non-specific” aspect Non-trivial aspects (for example, no “count all calls of method X”) Natural, really useful aspects

Aspect-Oriented Software Development (236601) 4 Submission Submit by cs): Code of all the aspects Documentation [what the aspects do] Explanation [why it should all work] Tests (sample runs to indicate correctness) Due by Dec. 31, 2006, noon subject: “ ID1 ID2” Name of the file: “ID1.zip”

Aspect-Oriented Software Development (236601) 5 Where to work? SSDL lab (2-nd floor, room 236) [you can, but don’t have to] Details about the lab – on the course web page Each of you has an account in the lab – please check access! (with your faculty Windows account login and password) Entrance to the lab – with your student cards (should work by now – check it!)

Aspect-Oriented Software Development (236601) 6 Base Systems - Exam System Manipulates fractions Generates and checks online exams Simple arithmetic exercises for fractions

Aspect-Oriented Software Development (236601) 7 Exam System - classes RationalExam class is the main class: initiates exams generates questions accepts answers, and checks whether the answer is correct Help class: the Rational class

Aspect-Oriented Software Development (236601) 8 Shopping Mall Parking Goal: Collecting payment for the parking. At each entrance tickets with arrival time are printed At each exit the ticket is collected and: - the payment is calculated (according to the ticket time) - the payment is collected from the driver - the gate is opened. Three entrances, three exits

Aspect-Oriented Software Development (236601) 9 Shopping Mall Parking - classes TicketAutomat (3 instances) Prints entrance tickets PaymentMachine (3 instances) Calculates payment (according to the ticket) Accepts payment (and checks it) Help class: Ticket (stores arrival time)

Aspect-Oriented Software Development (236601) 10 Bank System Enables its users : - to withdraw money - to check balance - to transfer money Operations are guarded by a secret code / password The user is allowed to proceed with the request if correct code is entered together with the account number (or – correct login and password).

Aspect-Oriented Software Development (236601) 11 Bank System - Classes ATM (3 instances) Passes the secret code and acc. num. to the server Passes the user’s requests to the server (money withdrawal, account balance check) Passes the server’s answers to the user Internet terminal (2 instances) Passes the login and password to the server Passes the user’s requests to the server (money transfer, account balance check) Passes the server’s answers to the user

Aspect-Oriented Software Development (236601) 12 Bank System – Classes (contd.) Server (one instance) Checks code Checks password Provides account balance info Performs money withdrawal Performs money transfer Communicates with the ATMs and the terminals

Good luck! (questions? cs !)