hibernate分页查询的各种方法

public Integer countAll1() {

String hql = "select count(*) from News as news";
List list = getHibernateTemplate().find(hql);
return list.get(0).hashCode();
}

public Integer countAll2() {

Criteria  criteria = this.getSession().createCriteria(News.class);
return ((Integer) (criteria.setProjection(Projections.rowCount())).uniqueResult()).intValue();
}

public List pagerList(Integer beginNum,Integer maxNum){
DetachedCriteria dCriteria = DetachedCriteria.forClass(News.class);
List list = getHibernateTemplate().findByCriteria(dCriteria, beginNum, maxNum);
return list;
}

public List pagerList1(String news,Integer beginNum,Integer maxNum){
Criteria criteria = this.getSession().createCriteria(News.class);
criteria.setFirstResult(beginNum);
criteria.setMaxResults(maxNum);
return criteria.list();
}

public List pagerList2(String news,Integer beginNum,Integer maxNum){
String hql = "from News";
Query query = this.getSession().createQuery(hql);
query.setFirstResult(beginNum);
query.setMaxResults(maxNum);
return query.list();
}