Hire a Java Developer

1 CONTEXT Do you know Coursera or Udacity? These MOOCs schools provide online courses with text, quizzes and interactive content. Online schooling becomes more and more popular nowadays, and a company asks you to develop an online course system. Because they want a robust and sure development language, you naturally choose to develop it with Java Enterprise Edition. 2 SPECIFICATIONS The first version of the website will be composed of several functionalities listed below: - Register, Log in and out - Display courses - Take a course and pass quizzes - Print certifications - Provide web services for external applications You have to use EJB 3.1, JSF and JPA implementing good practices (DAO, Factories, Criteria and MetaModel API...). 2.1 DATA STRUCTURE Before starting the project, draw an UML class diagram representing the JPA Entities you will need with their relationships. This diagram will be useful for you and for the team that will develop the next version of the platform. The class diagram must be returned in jpeg, png or pdf format. 2.2 APPLICATION STRUCTURE For this application, you will need a special architecture, service oriented. Several layers are mandatory in your application: - EJBs called by ManagedBean containing all business logic - DAO pattern for accessing database - Entities with Metamodel API - Web Services relying on entities Take the time to organize your application structure and use all elements listed above. 2.3 REGISTER, LOG IN AND OUT Your application must provide and authentication system. For anonymous, the website must display all courses descriptions, such as name, description, modules list, duration etc. For authenticated users, the website must display buttons in order to follow courses and receive certifications. Because we care a lot about security, your database must contain hashed password only! 2.4WEB SERVICES Create the following SOAP web services features for an external application: - Authenticate: Must return an unique token for other authenticated request - Get user: (Authenticated) Return an user by its ID - List courses: Display all courses information - Get course: Return a course by its ID - Take a course: (Authenticated) Consider the course taken - Pass quiz: (Authenticated) Consider the quiz for a supplied course passed - Print certification: (Authenticated) Call the printer