hibernate-demo/src/main/java/com/ankurm/hibernatedemo/query/Employee.java

package com.ankurm.hibernatedemo.query;

import jakarta.persistence.Entity;
import jakarta.persistence.FetchType;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.JoinColumn;
import jakarta.persistence.ManyToOne;
import java.time.LocalDate;

/**
 * Shared by the HQL chapter (15) and the Criteria API chapter (16).
 *
 * <p>Docs: docs/15-hql-queries.md, docs/16-criteria-queries.md.
 *
 * <p>{@code status} and {@code hireDate} exist specifically for the bulk-update/bulk-delete
 * scenarios both chapters cover ({@code UPDATE ... WHERE lastLogin/hireDate < :cutoff}-shaped
 * queries), and {@code department} is LAZY so the fetch-join chapter has a real N+1 to avoid
 * rather than an asserted one.
 */
@Entity
public class Employee {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String firstName;

    private String lastName;

    private Double salary;

    private String status;

    private LocalDate hireDate;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "department_id")
    private Department department;

    protected Employee() {
        // JPA
    }

    public Employee(String firstName, String lastName, Double salary, String status, LocalDate hireDate, Department department) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.salary = salary;
        this.status = status;
        this.hireDate = hireDate;
        this.department = department;
    }

    public Long getId() {
        return id;
    }

    public String getFirstName() {
        return firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public Double getSalary() {
        return salary;
    }

    public void setSalary(Double salary) {
        this.salary = salary;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public LocalDate getHireDate() {
        return hireDate;
    }

    public Department getDepartment() {
        return department;
    }

    @Override
    public String toString() {
        return "Employee{id=%s, firstName=%s, lastName=%s, salary=%s, status=%s}"
                .formatted(id, firstName, lastName, salary, status);
    }
}