Hibernate Criteria API - HAVING clause work arounds

Question

I've written a query using Hibernate Criteria API to grab a summation of a particular value, now I need to be able to restrict the result to rows where that sum is greater or equal to a particular value.

Normally I would use a HAVING clause in my SQL to do this, but the Criteria API doesn't seem to support that at this moment.

In raw SQL this is what I need it to do:

SELECT user_pk, sum(amount) as amountSum
FROM transaction
GROUP BY user_pk
HAVING amountSum >=50;

One work-around that I thought of is to use a subquery in the FROM clause that grabs this summation value and use an outer query to restrict it using a WHERE clause.

So, in raw SQL it will look something like:

SELECT user_pk, amountSum
FROM (SELECT user_pk, sum(amount) as amountSum
      FROM transaction
      GROUP BY user_pk)
WHERE amountSum > 50;

Can anyone point me in the right direction as to how I could write this using Criteria API, or any other suggestions/work-arounds I can use to solve the HAVING issue?

This is the Criteria API code I have for the above example

DetachedCriteria criteria = DetachedCriteria.forClass(Transaction.class,"transaction");
criteria.setProjection(criteria.setProjection(Projections.projectionList().add(
        Projections.groupProperty("user.userPK").as("user_pk")).add(
            Projections.sum("transaction.amount").as("amountSum")));

Thanks!