Challenge: Mediator Pattern

Problem statement

In this challenge, you need to use the mediator pattern to implement the HR of an office that mediates between the employees (workers and managers) of a company.

You have been given the dummy code for the HR class. You need to define its constructor and the functions:

• registerEmployee(employee): Registers an employee

• scheduleRaise(raise, worker, manager): Conveys the raise to the manager. Once the manager approves the raise, it gives the raise to the worker

Now, let’s look at the Manager and Worker classes. Both of them inherit from the Employee class (already defined for you). You need to do the following:

• Define the constructor for both classes

• In Manager class, define the receiveMessage function. It should display the message received from the HR regarding the salary raise of the worker

• In Manager class, define the approveRaise function. It should display a message of approval of the raise and return true after approval

• In the Worker class, define the receiveRaise function. It should increment the worker’s pay by the raise and display a message for the new pay

Input

The scheduleRaise function is called

Output

The messages conveying the raise to the manager, manager approving the raise, and the final pay are displayed

Sample input

var hr = new HR()
var employee = new Worker(hr,"Joe","Developer",1400)
var manager = new Manager(hr,"Allen","Team Lead",3000)
hr.scheduleRaise(200,employee,manager)

Sample output

"Joe should get 200 dollar raise" //HR conveying the message to the manager
"Joe's 200 dollar raise is approved" //manager approving the raise
"My new pay is 1600 dollars" //worker announcing the new pay