java - JPA/hibernate : Annotations for already created table

Question

我有两个表(已创建)，即具有以下架构的“人员”和“地址”:

create table Person (
    `id` int(11) not null auto_increment,
    `name` varchar(255) default null,
    primary key(`id`)
)

create table Address (
    `id` int(11) not null,
    `city` varchar(255) default null,
    primary key (`id`),
    constraint foreign key (`id`) references `Person`(`id`)
)

现在，我应该在代码中使用哪些注释？

这两个类的骨架是:

class Person {
    @Id @GeneratedValue
    @Column(name="id")
    int id;
    String name;

    Address address;
}

class Address {
    int id;
}

我需要为 Person 类中的 address 字段和 Address 类中的 id 字段添加注释。

Answer 1

在 Person.java

@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = "id",nullable=false)
@ForeignKey(name = "fk_id")     
private Address address;   

和地址.java -

@OneToOne(fetch=FetchType.LAZY)
@JoinColumn(name = "id", updatable = false, insertable = false, nullable=false)  
private Person id;    

@Column(name = "id", insertable = false, updatable = false, nullable=false)
private Integer id;