Purpose:
Create Web calculator
Deadline:
1 week from the time when task was received
Business Rules:
Calculator must have user authentication (user's info should be stored in DB)
There should be 2 different types of users - usual users, engineers (they should have access to engineering functions, such as sin,cos, etc. At least 3 engineering functions must be available)
Actions history for each user should be saved in DB. (and there should be a button, allowing user to view his actions history and repeat actions, if needed)
Interface:
You can use Windows calc.exe as an example
Try to use javascript frameworks to make interface more userfriendly:
jQueryUI - http://jqueryui.com/
ExtJS - http://www.sencha.com/products/extjs/
YUI - http://developer.yahoo.com/yui/
Implementation:
use OO approach
use SVN to store and manipulate project's source code. SVN repository (or repository dump) should be provided with the complete solution.
create ICalculator interface , which can perform all necessary calculations (use objects, that implement this interface)
create 3 different implementations of this interface:
straightforward (class that performs needed calculations)
CURL based (data is passed from Calculator script to “Calculation service” via POST method and received answer is sent to user)
SOAP based (data is passed from Calculator script to “Calculation service” via SOAP)
“Calculation service” should be protected, using Basic authentification. See example of calculation service workflow on diagramm 1.
Diagramm 1. Calculation service workflow
Grade will depend on:
If the project is fully functional or certain part of project is done or done with alternative solution (e.g. Interface implemented without JS usage)
If the deadline is met
DB organization, SQL queries quality
Code structure, Code quality, Code comments
SVN revisions history
Usability of the interface
Спустя 266 сек.
Диаграмма.
