sa1nick / employee-management-system

Employee Management System

A Java Spring Boot application for efficient employee data management, providing HR personnel an intuitive interface and empowering employees to access and update their information.

Built With

• Java 17
• Maven 4.0.0
• MySql Ver 8.0.32
• Spring Boot 3.0.5
• IntelliJ IDEA 2023.1 (Community Edition)

Data Flow

1. Models:

• It consists of HR, Employee and AuthenticationToken entity classes along with their data members and member functions
• Used @Table and @Entity annotations inside the entity class.
• Used Lombok to reduce boilerplate code for pojo class.By using Lombok annotations like @Data, @NoArgsConstructor, @AllArgsConstructor getters and setters for those object generate automatically.
• Used @OneToMany, @ManyToOne mapping.

2. Controllers:

• It consists of HRController ,EmployeeController classes in which used the annotations like @RestController to annotate the class as Controller.
• Used annotation @GetMapping , @PostMapping , @PutMapping , @DeleteMapping to map the HTTP web requests to the specific handler methods.

API Reference:

HR's API References

• Add HR:

  http://localhost:8080/api/v1/hr/

• Update Employee Details:

 http://localhost:8080/api/v1/hr/employeeId/employee

• Delete Employee:

 http://localhost:8080/hr/hrId/{hrId}/employeeId/{employeeId}

Employee's API References:

• Employee signup

  http://localhost:8080/api/v1/employee/signup

• Employee signin:

http://localhost:8080/api/v1/employee/signin

• Employee sign-out:

http://localhost:8080/api/v1/employee/signout

• Get All Employees:

http://localhost:8080/api/v1/employee/all

• Update Employee:

http://localhost:8080/api/v1/employee/{employeeId}?employeeEmail={employeeEmail}&token={token}

3. Services:

• It consists of EmployeeService ,HRService, TokenService classes in which provide some business functionalities of every handler methods.
• Used @Service annotation to indicate that a class belongs to the service layer.

4. Repositories:

• It consists of IHRDao ,IEmployeeDao, ITokenDao interfaces that extends JpaRepository which is interface for generic inbuilt CRUD operations on a repository for a specific type. Usually represent the database access layer in an application.
• Used Iterable to manage the data of entity classes by performing CRUD operations.
• Used @Repository annotation is used to indicate that the class provides the mechanism for storage, retrieval, search, update and delete operation on objects.
• Used @Modifying annotation wrote named parameters query using @Query annotation to insert, update, or delete an entity.

Project Summary

• The Employee Management System using Spring Boot is a web-based application designed to streamline the management of employee data for an organization. It provides an easy-to-use interface for HR personnel to manage employee records, including personal information, job roles, and salary details.
• Employees can also view and update their own personal information through the self-service module. The system offers reporting capabilities for generating reports related to employee attendance and performance. With the integration of Spring Boot, Spring MVC, Hibernate/JPA, and MySQL, this application provides a robust and efficient solution for effective employee data management.