带动态查询的 Hibernate 映射

Question

I have a dynamic query that is being generated in base of some data passed to a function. For this reason, I don't actually know how many columns I will have in my result. (The query is a pivot of Oracle 11G). I know that all the generated columns will be numeric items, there's a fixed column that will be always a string. How can i get a map<String, List<Double>> from hibernate mapping?

Answer 1

http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html#queryhql-select

Just create select in HQL and get list of map.

As a example:

select new map( max(bodyWeight) as max, min(bodyWeight) as min, count(*) as n ) from Cat cat

Using native query tutorial: http://www.flexjunk.com/2008/03/07/native-sql-in-hibernate/