HQL更新問題

我有兩個實體。 Data_mart和entity_data。 entity_data擴展了data_mart。我在data_mart和entity_data都有id列。實體市場中的data_id是data_mart的前導密鑰（Pkey那邊是id）。HQL更新問題

@Entity 
@Table(name = "data_mart") 
@Inheritance(strategy = InheritanceType.JOINED) 
@DiscriminatorColumn(name = "type") 
public class DataMaster { 

/** The id. */ 
@Id 
@GeneratedValue(strategy = IDENTITY) 
@Column(unique = true, nullable = false) 
private Long id; 
/** The type. */ 
private String type; 

/** The created by. */ 
private String createdBy; 
..... 
} 

@Entity 
@Table(name = "entity_data") 
@PrimaryKeyJoinColumn(name = "dataId") 
@DiscriminatorValue("FILE") 
@Where(clause = "active = '1'") 
public class EntityData extends DataMaster { 

/** The data id. */ 
@Column(insertable = false, updatable = false) 
    private Long dataId; 

/** The delimiter. */ 
private String delimiter; 
.... 
}

而子表的表結構如下

CREATE TABLE entity_data (
id bigint(20) NOT NULL AUTO_INCREMENT, 
data_id bigint(20) NOT NULL, 
delimiter varchar(20) DEFAULT NULL, 
file_path `varchar(200) DEFAULT NULL, 
... 
)

當我嘗試與HQL查詢來更新表entity_data，下面是由休眠

形成的中間查詢

create temporary table if not exists HT_entity_data (id bigint not null); 
insert into HT_entity_data 
select entitydata0_.data_id as data_id from entity_data 
entitydata0_ inner join data_master entitydata0_1_ on 
entitydata0_.data_id=entitydata0_1_.id where entitydata0_.file_path='abcdd' 


update entity_data set file_path='new_path' 
where (id) IN (select data_id from HT_entity_data)

上述查詢給出了錯誤的結果。在上述更新聲明的where子句中，id即將到來。它應該是data_id。

我想不通這是怎麼回事？

來源

2014-01-24 Harikrishnan Ck