[英]@Where clause does not work inside hibernate join query
我有2个@Where注释实体。 第一个是分类;
@Where(clause = "DELETED = '0'")
public class Category extends AbstractEntity
它有以下关系;
@OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "category")
private Set<SubCategory> subCategories = Sets.newHashSet();
第二个实体是SubCategory;
@Where(clause = "DELETED = '0'")
public class SubCategory extends AbstractEntity
并包含对应关系;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "CATEGORY_ID")
private Category category;
每当我打电话给下面的Dao方法;
@Query(value = "select distinct category from Category category join fetch category.subCategories subcategories")
public List<Category> findAllCategories();
我得到了以下sql查询;
select
distinct category0_.id as id1_3_0_,
subcategor1_.id as id1_16_1_,
category0_.create_time as create2_3_0_,
category0_.create_user as create3_3_0_,
category0_.create_userip as create4_3_0_,
category0_.deleted as deleted5_3_0_,
category0_.update_time as update6_3_0_,
category0_.update_user as update7_3_0_,
category0_.update_userip as update8_3_0_,
category0_.version as version9_3_0_,
category0_.name as name10_3_0_,
subcategor1_.create_time as create2_16_1_,
subcategor1_.create_user as create3_16_1_,
subcategor1_.create_userip as create4_16_1_,
subcategor1_.deleted as deleted5_16_1_,
subcategor1_.update_time as update6_16_1_,
subcategor1_.update_user as update7_16_1_,
subcategor1_.update_userip as update8_16_1_,
subcategor1_.version as version9_16_1_,
subcategor1_.category_id as categor11_16_1_,
subcategor1_.name as name10_16_1_,
subcategor1_.category_id as categor11_3_0__,
subcategor1_.id as id1_16_0__
from
PUBLIC.t_category category0_
inner join
PUBLIC.t_sub_category subcategor1_
on category0_.id=subcategor1_.category_id
where
(
category0_.DELETED = '0'
)
你能告诉我为什么上面的查询缺乏
和subcategor1_.DELETED ='0'
在哪里挡?
我刚刚在我的项目中解决了类似的问题。
可以将@Where注释不仅放在Entity上,还放在子集合上。
根据javadoc :
Where子句添加到元素集合的实体或目标实体
在你的情况下,它会像:
@OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "category")
@Where(clause = "DELETED = '0'")
private Set<SubCategory> subCategories = Sets.newHashSet();
请在此处找到解决的类似问题
我相信因此解决方案与使用Hibernate过滤器相比并不具有侵略性。默认情况下,这些过滤器被禁用并在会话级别上运行,因此每次新的Session打开时启用它们都是额外的工作,尤其是当您的DAO通过Spring Data等抽象工作时
这是一个快速回复;
@Where(clause = "DELETED = '0'")
public class SubCategory extends AbstractEntity
直接查询SubCategry时会在Where
生效。 拿不到删除子类别使用Hibernate的过滤器上的所示例这里
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