How does one use the Criteria API to specify something like:

select new java.lang.Long(distinct t.taskId) from Tasks t where ...

I can easily figure how how to do this using the Criteria API:

select distinct t.taskId from Tasks t where ...

but the API for wrapping the result objects into typesafe objects, i.e. specifying the 'new ...(...)' part using the Criteria API is where I am stuck.

Thanks