title: JPA Date Arithmetic?
body: <p>Is it possible to perform date arithmetic using JPA/Hibernate?  For example, I have an entity with a java.util.Date field indicating when the row was created.  Is it possible to perform a query using JPQL and include date arithmetic on that field?  For example, can I perform a COUNT(*) of rows and then GROUP BY the month in that field?  Can I perform other functions, such as only return the month or year from that field in a query?  </p>