Question

Is there a way in JAVA hibernate to execute a criteria query and projections count on that same query in a single trip to the DB?

The reason for wanting this is getting the most efficient way to page results, i was hoping to do the following

start transaction 
   start db call
     do query()
     do count()
   end db call
end transaction

what i’m currently doing is

start transaction 
   start db call
     do query()
   end db call
   start db call
     do count()
   end db call
end transaction

Answer 1

I really looked into this about a year ago and the best I came up with was executing both database operations in the same transaction. It is still two separate database hits, but it eliminates somewhat embarrassing headers like records 1-50 from 45.