Hibernate各类概念-如何查询总数

select count(*) from ....

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class TestHibernate {
public static void main(String[] args) {
SessionFactory sf = new Configuration().configure().buildSessionFactory();
Session s = sf.openSession();
s.beginTransaction();

String name = "iphone";

Query q =s.createQuery("select count(*) from Product p where p.name like ?");
q.setString(0, "%"+name+"%");
long total= (Long) q.uniqueResult();
System.out.println(total);
s.getTransaction().commit();
s.close();
sf.close();
}

}