Abstract

// retrieve from database
// existing functions:

// DatabaseFeature (class)
// - connectToDatabase


// 1. GET EMPLOYEES
// connect to database
// get employees

// 2. UPDATE EMPLOYEE
// connect to database
// update employe

using System;
using System.Collections.Generic;

namespace Demoabstraction
{
    // abstract class
    abstract class DatabaseFeature
    {
        // abstract method
        public abstract int connectToDatabase();
    }

    // square class inherting
    // the Shape class
    class GetEmployees : DatabaseFeature
    {
        public override int connectToDatabase()
        {
            // connect to database stuff
            throw new NotImplementedException();
        }

        public int getEmployeeCount()
        {
            connectToDatabase();
            int employeeCount = 100; // dummmy
            return employeeCount;
        }

        public List<string> getEmployeeNames()
        {
            connectToDatabase();
            List<string> employees = new List<string>();

            //retrieve employee names

            return employees;
        }
    }

    class UpdateEmployee : DatabaseFeature
    {
        public override int connectToDatabase()
        {
            // connect to database stuff
            throw new NotImplementedException();
        }

        public void updateEmployeeName(string firstName, string lastName, string middleName)
        {
            connectToDatabase();
            // update employee's name
        }

        public void updateEmployeeCredentials(string username, string password)
        {
            connectToDatabase();
            // update employee's credentials (username, password)
        }
    }
    // Driver Class
    class SampleClass{
     // Main Method
        static void Main(string[] args) {

            UpdateEmployee update = new UpdateEmployee();

            // calling the method
            GetEmployees employees = new GetEmployees();

        }
    }
}