Employee Management System

A Spring Boot application for managing employees with polymorphic entities like PermanentEmployee and ContractEmployee. The application demonstrates CRUD operations, utilizes Hibernate/JPA for database interactions, and follows industry-standard coding practices.

Getting Started

Prerequisites

Ensure you have the following installed:

• Java JDK: Version 17 or higher.
• Maven: Dependency and build management.
• MySQL: Relational database.

1. Clone the Repository

git clone https://github.com/abhishekgoyalp/Employee-Management-System.git
cd Employee-Management-System

2. Configure the Database

Open the src/main/resources/application.properties file and update it with your database configuration.

MySQL Configuration:

spring.datasource.url=jdbc:mysql://localhost:3306/your_db
spring.datasource.username=your_db_username
spring.datasource.password=your_db_password

spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true

3. Build the Project

Run the following command to build the project:

mvn clean install

4. Run the Application

By default, It will run on localhost with port 8080. If you want to run it on another port just add one property(server.port=your_port) in application.properties file. Start the application with:

mvn spring-boot:run

5. Running Tests

Run unit tests with:

mvn test

API Endpoints

Method	Endpoint	Description
POST	/api/employees	Create a new employee
GET	/api/employees/{id}	Get an employee by ID
PUT	/api/employees/{id}	Update an existing employee
DELETE	/api/employees/{id}	Delete an employee
GET	/api/employees	Get all employees

Features

• CRUD Operations: Create, Read, Update, and Delete employees.
• Polymorphism: Handle multiple employee types (PermanentEmployee and ContractEmployee).
• Database Interaction: Uses MySQL with Hibernate ORM.
• Unit Tests: JUnit-based test cases for validation and business logic.