Question

我受到以下预先存在的架构定义的限制

CREATE TABLE `owner` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

CREATE TABLE `owned` (
  `owner_id` bigint(20) NOT NULL,
  PRIMARY KEY (`owner_id`),
  CONSTRAINT `FK_blabla` FOREIGN KEY (`owner_id`) REFERENCES `owner` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

我想创建一个反映上述内容的UNIDIRECTIONAL OneToOne关系，到目前为止已经提出了以下内容

@Entity
class Owner implements Serializable {

    @Id
    @GeneratedValue
    private Long id;

    @OneToOne(cascade=CascadeType.ALL, orphanRemoval = true)
    @PrimaryKeyJoinColumn
    private Owned owned;

}

@Entity
class Owned implements Serializable {

    @Id
    @Column(name = "owner_id")
    private Long ownerId;

}

但是，从上面的JPA实体定义自动生成模式时，不会生成约束

CREATE TABLE `owner` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

CREATE TABLE `owned` (
  `owner_id` bigint(20) NOT NULL,
  PRIMARY KEY (`owned_id`),
) ENGINE=InnoDB DEFAULT CHARSET=utf8

我错过了什么？

单向OneToOne外部主键

0 个答案: