hibernate find(criterions)方法里的参数是什么意思啊

hibernate里的方法为什么那么深奥啊

criterions 查询条件,可有0项或任意多项
案例：
public int findCountsByCriteria(final Class entityClass,final Criterion criterions){
int totalCounts = (Integer)getHibernateTemplate().execute(new HibernateCallback(){

public Object doInHibernate(Session session)
throws HibernateException, SQLException {
Criteria criteria = session.createCriteria(entityClass);
//按属性条件查询
for(Criterion criterion : criterions){
criteria.add(criterion);
}
int totalCounts = criteria.list().size();
return totalCounts;
}
});
return totalCounts;
}

我。。知。。道 加。。我。。私。。聊