本文介绍了休眠鉴别器排序的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在区分列上查询时,我正在尝试对记录进行排序.
I am trying to sort the records when queried on discriminator column.
我正在执行HQL/条件查询以检索所有记录.
I am doing a HQL/ Criteria query for retrieving all the records.
这是我的课程:
abstract class A {
...
}
@DiscriminatorValue("B")
class B extends A {
}
@DiscriminatorValue("C")
class C extends A {
}
当我返回记录时,我希望它按区分值排序.
When I return the records, I want it sorted on the discriminator value.
推荐答案
您可以将class用作属性,以进行查询,排序和分组.
You can use class as attribute, for querying, sorting and grouping by.
例如:从Cat cat中选择cat,其中cat.class ='DomesticCat'
eg: select cat from Cat cat where cat.class = 'DomesticCat'
如果DomesticCat是子类的区分值.
if DomesticCat is the discriminator value of the sub class.
信息@ http://doc.javanb.com/hibernate-reference-3-2-4-ga-zh/queryhql.html .
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