我有一张继承自Media类的CD:
CD:
@Entity
public class CD extends Media {
...
}
媒体:
@Entity(name = "media")
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class Media extends PersistenceId<Long> {
...
}
JPA自动生成一个外键名称,我想用我想要的名称覆盖它:
03-10 18:16:58.174 [main] DEBUG org.hibernate.SQL - alter table cd add 约束FK_ehd468g2cptgh6bq6sxe75xlf外键(id)引用 媒体(id)
怎么做?我试过了:
@Entity
@AssociationOverride(
name = "id",
foreignKey = @ForeignKey(name = "fk_cd_media")
)
public class CD extends Media {
...
}
和
@Entity
@PrimaryKeyJoinColumn(foreignKey=@ForeignKey(name = "fk_cd_media"))
public class CD extends Media {
...
}
但它没有用。
这是生成的create table sql:
CREATE TABLE `cd` (
`artist` varchar(255) DEFAULT NULL,
`year` int(11) NOT NULL,
`id` bigint(20) NOT NULL,
PRIMARY KEY (`id`),
CONSTRAINT `FK_ehd468g2cptgh6bq6sxe75xlf` FOREIGN KEY (`id`) REFERENCES `media` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
我想:
CONSTRAINT `fk_cd_media` FOREIGN KEY (`id`) REFERENCES `media` (`id`)
答案 0 :(得分:2)
你的第二次尝试是要走的路:
@Entity
@PrimaryKeyJoinColumn(foreignKey=@ForeignKey(name = "fk_cd_media"))
public class CD extends Media {
...
}
问题是您遇到了Hibernate错误:https://hibernate.atlassian.net/browse/HHH-10352
编辑:问题解决了:
修复版本:5.0.10,5.2.1,5.1.1