关于Hibernate的查询

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（1）Hibernate中Query.uniqueResult();
 如果有多个值抛错
 如果有值且只有一个,返回一个object
 如果没值,返回null
（2）setEntity(0,organization) 是把organization的值插入到HQL中的第一个?中，是实体类型
其他的如：setString(1,name)name是传过来到参数

分页查询

java 代码

public PageList findPreEmployeesByOrganization(
            final Organization organization, final PageRequest pageRequest,
            final SortInfo sortInfo)
    {
        HibernateCallback callBack = new HibernateCallback()
        {
            public Object doInHibernate(Session session)
                    throws HibernateException, SQLException
            {
                String queryString = "select distinct e from Employee e join e.posts pe join pe.post p join

p.organizations o where o.organization.organizationId = ? and e.postStatus = 2"
                        + sortInfo.toString();

                List list = session.createQuery(queryString).setEntity(0,
                        organization).setFirstResult(pageRequest.getStartNum())
                        .setMaxResults(pageRequest.getPagesize()).list();

                String countQueryString = "select count(distinct e) from Employee e join e.posts pe join

pe.post p join p.organizations o where o.organization.organizationId = ? and e.postStatus = 2";
                int recCount = ((Integer) session.createQuery(countQueryString)
                        .setEntity(0, organization).uniqueResult()).intValue();
                PageList pageList = new PageList(list, pageRequest
                        .getPagesize(), recCount, pageRequest.getPageno());
                return pageList;
            }
        };
        return (PageList) getHibernateTemplate().execute(callBack);
    }