Hi,

im wondering why searching entities by using em.find is quite expensive in contrast to a named query.

The code:

 Ball b = em.find(Ball.class, 34);

is much slower than this:

Query q = em.createQuery("SELECT Object(o) FROM Ball o WHERE id=:id");
q.setParameter("id", 34);
Ball b = q.getSingleResult();

Is used to retrieve my entities the "find" way in my application, unless i resolved gracefull perfomenace problems.
The query is more than five times faster than the find.
Why?

Greetings
Martin