Hibernate JPA SqlResultSetMapping嵌套类构造函数

@Entity
@SqlResultSetMapping(
    name = "EmployeeDepartmentMapping",
    classes = @ConstructorResult(
        targetClass = Employee.class,
        columns = {
            @ColumnResult(name = "employeeId"),
            @ColumnResult(name = "employeeName"),
            @ColumnResult(name = "departmentId"),
            @ColumnResult(name = "departmentName")
        }
    )
)
@NamedNativeQuery(
    name = "getEmployeeDepartment",
    query = "SELECT e.id as employeeId, e.name as employeeName, d.id as departmentId, d.name as departmentName " +
            "FROM Employee e " +
            "JOIN Department d ON e.department_id = d.id",
    resultSetMapping = "EmployeeDepartmentMapping"
)
public class Employee {
    private Long employeeId;
    private String employeeName;
    private Department department;

    public Employee(Long employeeId, String employeeName, Long departmentId, String departmentName) {
        this.employeeId = employeeId;
        this.employeeName = employeeName;
        this.department = new Department(departmentId, departmentName);
    }

    // Getters and setters
}

public class Department {
    private Long departmentId;
    private String departmentName;

    public Department(Long departmentId, String departmentName) {
        this.departmentId = departmentId;
        this.departmentName = departmentName;
    }

    // Getters and setters
}