Hibernate关于聚合函数的一些用法

关于hibernate中聚合函数的用法

1. public int countDetails() throws Exception {
// TODO Auto-generated method stub
Transaction trans = null;
trans = HibernateSessionFactory.getSession().beginTransaction();
int m =(Integer)HibernateSessionFactory.getSession().createQuery(
"select count(*) from Details").list().get(0);
trans.commit();
HibernateSessionFactory.closeSession();
return m;
}

返回数据总行数
2.public double countDetailsMoney() throws Exception {
Transaction trans = null;
trans = HibernateSessionFactory.getSession().beginTransaction();
Double m =(Double)HibernateSessionFactory.getSession().createQuery(
"select sum(money) from Details").list().get(0);
trans.commit();
HibernateSessionFactory.closeSession();
return m;

}

计算总金额