Spring Data JPA：Query如何返回非实体对象或对象列表？

I am using spring data JPA in my project. I am playing with millions of records. I have a requirement where I have to fetch data for various tables and build a object and then paint it on a UI. Now how to achieve this my Spring data Repositories. I have read that it can be achieved by Named native queries.I am using spring data JPA in my project. I am