Question

我有3个表代表容器容器关系，如下所示：

create table Containee(id int, name varchar(100), primary key(id));
create table Container(id int, name varchar(100), sourceId int, sourceType varchar(100), primary key(id));
create table JoinTable(containeeId int, resourceId int, resourceType varchar(100), primary key(containeeId, resourceId, resourceType));

hibernate实体映射如下

@Entity
public class Containee {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private int id;

@Basic
private String name;
}

@Entity
public class Container implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private int id;

@Basic
private String name;

@Embedded
@AttributeOverrides({
    @AttributeOverride(name = "id", column = @Column(name = "sourceId")),
    @AttributeOverride(name = "type", column = @Column(name = "sourceType"))
})
private DomainObject domainObject;

@OneToMany(fetch = FetchType.LAZY)
@JoinTable(name = "JoinTable", 
    joinColumns = {
        @JoinColumn(name="resourceId", referencedColumnName = "sourceId"),
        @JoinColumn(name="resourceType", referencedColumnName = "sourceType")
    }, 
    inverseJoinColumns = @JoinColumn(name = "containeeId")
)
private Collection<Containee> containees;
}

嵌入类声明为

@Embeddable
public class DomainObject {
private int id;
private String type;

public int getId() {
    return id;
}

public String getType() {
    return type;
}

}

上面的代码不起作用，我收到以下错误：

引用容器的referencedColumnNames（sourceId，sourceType）容器未映射到单个属性。

但是，如果我删除@Embedded domainObject字段并将其替换为2 @Basic sourceId和sourceType，则相同的代码就像魅力一样。我尝试了很多东西，但似乎没有任何东西可以用于@Embedded字段。任何帮助表示赞赏！

Answer 1

为sourceId和sourceType再添加2个@Basic字段修复了这个！

@OneToMany与@JoinTable和@Embedded

1 个答案: