Hibernate中Criteria和DetachedCriteria的作用是什么
Criteria c=session.createCriteria(Customer.class);
//设置条件
c.add(Expression.ge(“字段名”,”值对象”))
ge:>=
gt:>
le:<=
lt:<
eq:=
//排序
c.addOrder(Order.asc(“字段名”))
//分页
c.setFirstResult(1)//从第2行开始提取
c.setMaxResults(5)//返回5行
DetachedCriteria产生时不需要session
DetachedCriteria dc= DetachedCriteria.forClass(Customer.class)
Criteria c=dc.getExecutableCriteria(session)