spring data jpa custom query

[spcmdr]

Hi

I am using the spring data jpa API, everything work fine as for the moment I am making query to get entities.
All methods (findA(...), findBy..(...)) return entities.

I need to query the number of users by date :
select birthday, count(id) from user group by birthday

How can I perform this query with spring data jpa ?
I need to receive a collection of dates with the number of user.

In case I can't do that with spring data jpa I have another question ?
How can I get a criteria builder from the LocalContainerEntityManagerFactoryBean ?

is It ok to do localContainerEntityManagerFactoryBean.getObject. getCriteriaBuilder()

Regards

[spcmdr]

Here is my solution, not nice but works

JPAQuery query = new JPAQuery(entityManager);

query.from(...);
query.where(...);
query.groupBy(...);
query.orderBy(user.dateCreated.asc());

return query.list(ConstructorExpression.create(UserTO.class, user.dateCreated, user.count()));

In am using JPAQuery from querydsl

It will be nice que be able to get a JPAQuery from the QueryDslJpaRepository.

Regards