我需要在hibernate中进行连接,但是我想从被发现中排除一些结果。我已尝试使用@JoinColumnsOrFormulas
,但我仍然可以获得所有结果
@OneToOne
@JoinColumnsOrFormulas({
@JoinColumnOrFormula(formula = @JoinFormula(value= "(select a.seller_sku from de_products a where a.asin = 'a' and a.product_name != '' and a.seller_sku != '' and a.seller_sku = sku)", referencedColumnName = "seller_sku")),
@JoinColumnOrFormula(column = @JoinColumn(name = "sku", referencedColumnName = "seller_sku", insertable = false, updatable = false))
})
public DeProducts getDeProduct() {
return deProduct;
}
如果我在没有column
定义的情况下尝试
@OneToOne
@JoinColumnsOrFormulas({
@JoinColumnOrFormula(formula = @JoinFormula(value= "(select a.seller_sku from de_products a where a.asin = 'a' and a.product_name != '' and a.seller_sku != '' and a.seller_sku = sku)", referencedColumnName = "seller_sku"))
})
public DeProducts getDeProduct() {
return deProduct;
}
我在应用程序启动时遇到NullPointerException,位于
org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory
如何使用spring-boot(1.4)hibernate(5.2.2.Final)与其他标准/排除项进行联接?
答案 0 :(得分:0)
我想我找到了一个有效的解决方案。在引用公式和@JoinColumn注释中的相同列时,Hibernate似乎忽略了@JoinForumula。当引用公式中的另一列时 - 例如id
,它有效。
@OneToOne
@JoinColumnsOrFormulas({
@JoinColumnOrFormula(formula = @JoinFormula(value = "(select a.id from de_products a where a.asin != '' and a.product_name = 'a' and a.seller_sku = sku)",
referencedColumnName = "id")),
@JoinColumnOrFormula(column = @JoinColumn(name = "sku", referencedColumnName = "seller_sku", insertable = false, updatable = false))
})
public DeProducts getDeProduct() {
return deProduct;
}