我怎样才能为oneToMany映射这个需求

Question

public class UserOUData {

    @Id
    private Long id;

    private String UserEmail;
private Long orgUnitPathId;
}
@Entity
@Table(name="Ou")
public class OU {

    @Id
    private long id;
    
    private String name;
    
    private String path;
    
    @ManyToOne
    @JoinColumn(name="id")
    private Collection<UserOUData> usersId;
    }

非法尝试将非集合映射为@onetomany、@manytomany或@collectionofelements:cloudcodes.schema.generator.model.useroudata.orgunitpathid

    private Long orgUnitPathId;
    @ManyToOne
    @JoinColumn(name="orgUnitPathId")
    private Collection<UserOUData> usersId;

有人能帮我提前谢谢你吗。

Answer 1

您有一个可以有多个用户的组织单元，因此需要组织单元上的oneTomany关系：

@Entity
@Table(name="Ou")
public class OU {
    @Id
    private long id;
    
    private String name;
    private String path;
    
    @OneToMany(fetch = FetchType.LAZY, mappedBy = "organizationalUnit")
    private Collection<UserOUData> usersData;
}

对于useroudata，您需要一个manytoone，因为多个用户可以是同一个ou:

@Entity
@Table(name="UserOUData")
public class UserOUData {

    @Id
    private Long id;

    private String UserEmail;
    
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "ou_id")
    private OU organizationalUnit;
}

此设置假定您希望在OU和UserouData之间建立双向连接。