Question

我正在使用postgres / postgis进行休眠。当我将Hibernate属性“hibernate.hbm2ddl.auto”从“update”切换为validate时，我得到了这个异常：

引起：org.hibernate.HibernateException：列type_id的历史记录中的列类型错误。找到：int8，预期：int4

首先我认为hibernate需要对另一个表的每个引用都是int8。我选择将列type_id更改为bigint但没有成功。我没有想法。有人可以帮忙吗？

我的实体以这种方式构建：

@Entity
public class History{       
  @Id
  protected Integer id;
  private Date created_on;
  private Date timestamp;
  @ManyToOne
  private DataType type;
  private Double value;
}
@Entity
public class DataType{      
   @Id
   private Integer id;
   private String cname;
   private Date created_on;
   private String cunit;
 }

这些是db中的表定义：

历史

    Column |            Type             | Modifiers                            
------------+-----------------------------+-----------------
id         | integer                     | not null default                          nextval('history_id_seq'::regclass)
created_on | timestamp without time zone | 
timestamp  | timestamp without time zone | 
value      | double precision            | 
type_id    | bigint                      | not null
Indexes:
"pk_history" PRIMARY KEY, btree (id)
Foreign-key constraints:
"fk_history" FOREIGN KEY (type_id) REFERENCES type(id)

类型

Column      |            Type             | Modifiers 
-------------+-----------------------------+-----------
id          | bigint                      | not null
cname       | character varying(255)      | 
created_on  | timestamp without time zone | 
cunit       | character varying(255)      | 

Indexes:
"type_pkey" PRIMARY KEY, btree (id)
Referenced by:
TABLE "history" CONSTRAINT "fk_history" FOREIGN KEY (type_id) REFERENCES type(id)

＆＃34;表＆＃34;中的列类型错误对于列＆＃34; xy＆＃34;找到：int8，预期：int4

0 个答案: