@Where子句在hibernate join查询中不起作用

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 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 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？

Answer 1

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，还可以放在子集合上。

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 subCategories = Sets.newHashSet(); 

请在此处找到解决的类似问题

我相信因此，与使用Hibernatefilter相比，解决方案并不具有侵入性。默认情况下，这些filter被禁用并在会话级别运行，因此每次新的Session打开时都会启用它们，特别是当您的DAO通过Spring Data等抽象工作时

Answer 2

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。 要不删除子类别，请使用Hibernate Filters作为示例