Hibernate多对一部分复合外键

Question

我有必须将部分复合键映射为外键的情况，例如，hibernate是否可以将部分复合键映射为外键？

class Employee {
    @embededId
    EmployeeId id;
}

class Mobile {
    @Id
    int mobId;

    @ManyToOne
    @JoinColumn(name="empId" referencecolumnname="empId")
    Employee emp;
}

class EmployeeId {
    private int empId;
    private int deptId;
}