#15 Employee management system

achyut/pom.xml

@@ -6,4 +6,11 @@
  <version>1.0.0</version>
  </parent>
  <artifactId>achyut</artifactId>
+ <dependencies> 
+ <dependency>
+ <groupId>mysql</groupId>
+ <artifactId>mysql-connector-java</artifactId>
+ <version>5.1.33</version>
+ </dependency>
+ </dependencies>
 </project>

achyut/src/main/java/com/lftechnology/appinterfaces/AppUserInterface.java

@@ -0,0 +1,14 @@
+package com.lftechnology.appinterfaces;
+
+import com.lftechnology.entities.Employee;
+import com.lftechnology.entities.User;
+/**
+ * Interface for authentication for the application users
+ * @author achyut
+ *
+ */
+public interface AppUserInterface{
+
+ public Employee authenticate(User user);
+
+}

achyut/src/main/java/com/lftechnology/appinterfaces/EmployeeInterface.java

@@ -0,0 +1,24 @@
+package com.lftechnology.appinterfaces;
+
+import com.lftechnology.entities.Employee;
+import java.sql.ResultSet;
+/**
+ * An Interface to define the signatures for the employee management
+ * @author achyut
+ *
+ */
+public interface EmployeeInterface{
+
+ public boolean isUsernameExists(String username);
+
+ public int addEmployee(Employee e);
+
+ public int deleteEmployee(Employee e); 
+
+ public int terminateEmployee(Employee e);
+
+ public Employee editEmployeeDetails(Employee e);
+
+ public ResultSet searchEmployee(Employee e); 
+
+}

achyut/src/main/java/com/lftechnology/controller/EmployeeController.java

@@ -0,0 +1,105 @@
+
+package com.lftechnology.controller;
+
+import java.sql.ResultSet;
+import com.lftechnology.entities.Role;
+import com.lftechnology.service.EmployeeService;
+import com.lftechnology.service.ServiceFactory;
+import com.lftechnology.entities.Employee;
+
+/**
+ * Controller to managed the employee
+ * @author achyut
+ *
+ */
+public class EmployeeController{
+
+ /**
+ * For First time setup on the superadmin
+ * @author achyut
+ * @return void
+ */
+ public void prepareInitialUser(){
+ EmployeeService ed = ServiceFactory.getEmployeeService();
+ if(!ed.isUsernameExists("superadmin")){
+ Employee e = new Employee();
+ e.setUsername("superadmin");
+ e.setPassword("superadmin");
+ e.setDepartment("FHF");
+ e.setAddress("Kalanki Syuchatar");
+ e.setFullName("Achyut Dahal");
+ e.setIsTerminated(false);
+ e.setRole(Role.ADMIN);
+ ed.addEmployee(e);
+ }
+
+ }
+
+ /**
+ * Add an employee object to database
+ * @param employee
+ * @return int
+ */
+ public int addEmployee(Employee employee){
+ int employeeAdded = 0;
+ EmployeeService ed = ServiceFactory.getEmployeeService();
+ employeeAdded = ed.addEmployee(employee);
+
+ return employeeAdded;
+ }
+
+ /**
+ * Terminate an employee
+ * @param employee
+ * @return int
+ */
+ public int terminateEmployee(Employee employee){
+ int employeeTerminated = 0;
+ EmployeeService emplSerObj = ServiceFactory.getEmployeeService();
+ employeeTerminated = emplSerObj.terminateEmployee(employee); 
+ return employeeTerminated;
+ }
+
+ /**
+ * Delete an employee from the system
+ * @param em
+ * @return int
+ */
+ public int deleteEmployee(Employee employee){
+ int employeeDeleted = 0;
+ EmployeeService emplSerObj = ServiceFactory.getEmployeeService();
+ employeeDeleted = emplSerObj.deleteEmployee(employee); 
+ return employeeDeleted;
+ }
+
+ /**
+ * View an employee in the system
+ * @param employee
+ * @return ResultSet
+ */
+ public ResultSet viewEmployee(Employee employee){
+ ResultSet rs = null;
+ EmployeeService emplSerObj = ServiceFactory.getEmployeeService();
+ rs = emplSerObj.searchEmployee(employee);
+ return rs;
+ }
+
+ /**
+ * Update the profile of an employee
+ * @param employee
+ * @return Employee
+ */
+ public Employee editEmployeeDetails(Employee employee){
+ EmployeeService emplServiceObj = ServiceFactory.getEmployeeService();
+ String userNameFormat = "[a-zA-z][a-zA-z0-9._@]+"
+ if (employee.getUsername().length() != 0 && !(employee.getUsername().matches(userNameFormat))){
+ System.out.println("\n\t\tUsername Cannot contain extra characters\n");
+ return employee;
+ }
+ return emplServiceObj.editEmployeeDetails(employee);
+
+ }
+
+
+
+}

achyut/src/main/java/com/lftechnology/controller/UserController.java

@@ -0,0 +1,68 @@
+
+package com.lftechnology.controller;
+
+import java.util.Scanner;
+import com.lftechnology.service.UserService;
+import com.lftechnology.service.ServiceFactory;
+import com.lftechnology.entities.Employee;
+import com.lftechnology.entities.User;
+import com.lftechnology.entities.Role;
+import com.lftechnology.view.UserMenu;
+/**
+ * Controller for handling the user actions
+ * @author achyut
+ *
+ */
+
+public class UserController{
+
+ /**
+ * Validate and login a user
+ * @param user
+ * @param scan
+ */
+ public void login(User user, Scanner scan){
+ Employee employee = new Employee();
+ UserService ls = ServiceFactory.getLoginService();
+
+ employee = ls.authenticate(user);
+
+ if (employee.getId() == 0){
+ System.out.println("\nLogin Failed. No username and password matched");
+ } else{
+ System.out.format("Welcome %s", employee.getFullName());
+ UserMenu userMenu = new UserMenu(); 
+ if (employee.getRole().equals(Role.ADMIN)){
+ userMenu.displayAdminMenu(employee, scan);
+ } else{
+ userMenu.displayUserMenu(employee, scan);
+ }
+ }
+
+ }
+
+ /**
+ * Prepare a user for logout making the user GUEST
+ * @param employee
+ * @param sc
+ * @return Employee
+ */
+ public static Employee logOut(Employee employee, Scanner sc){
+ System.out.println("\nYou Wanna Sign Out?");
+ System.out.println("tyes = 1\t\tno = 2");
+
+ int check = Integer.parseInt(sc.nextLine());
+ if (check == 1){
+ employee.setRole(Role.GUEST);
+ employee.setId(0);
+ employee.setUsername("");
+ employee.setPassword("");
+ employee.setIsTerminated(true); 
+ employee.setFullName("");
+ employee.setAddress("");
+ employee.setDepartment(""); 
+ }
+ return employee;
+ }
+
+}

achyut/src/main/java/com/lftechnology/dao/DaoFactory.java

@@ -0,0 +1,23 @@
+
+package com.lftechnology.dao;
+
+
+public class DaoFactory{
+
+ private DaoFactory(){
+
+ }
+
+ public static UserDao getLoginDao(){
+
+ return new UserDao();
+ }
+
+ public static EmployeeDao getEmployeeDao(){
+
+ return new EmployeeDao();
+ }
+
+
+
+}

achyut/src/main/java/com/lftechnology/dao/DbAdapter.java

@@ -0,0 +1,48 @@
+package com.lftechnology.dao;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.util.Properties;
+
+/**
+ * DBAdapter for Mysql
+ * @author achyut
+ *
+ */
+public class DbAdapter{
+
+ private DbAdapter(){
+
+ }
+
+ /**
+ * Get a MYSQL JDBC Connection
+ * @return Connection
+ */
+ public static Connection setConnection(){
+
+ Properties prop = new Properties();
+ InputStream input = null; 
+
+ Connection connection = null;
+ try{
+ input = new FileInputStream("src/main/java/com/lftechnology/dao/dbconfig.properties");
+ prop.load(input);
+ String username = prop.getProperty("dbuser");
+ String password = prop.getProperty("dbpass");
+ String url = prop.getProperty("dburl");
+ connection = DriverManager.getConnection(url, username, password);
+
+ input.close();
+ } catch(FileNotFoundException fnf){
+ System.out.println("File not found");
+ } catch (Exception e){
+
+ System.out.println("Couldn't connect to database ="+e.getMessage());
+ } 
+ return connection;
+ }
+}