在hibernate中多次查询的干净方式

Question

我正在使用没有注释的Hibernate 3.0。我有我的DAO方法，它与db交互并将数据发送到servlet。

在这个用例中，我希望在我使用第一个查询的许多表中插入一些记录。在第二个查询中，我需要在插入后更新数据库值。现在，我想基于规范更改添加另一个查询，这些更改必须持久存储到具有mhp和mhvp_new实例的数据库。我该怎么做？我可以在同一个会话中执行此操作，就像我为查询2所做的那样。

任何帮助都将不胜感激。

public boolean addHonorariumDetails(Monthly_volunteer_honorarium_processing mvhp, Monthly_honorarium_processing mhp, Monthlyhonorariumcompid mhid, List list)
{
    Session session=HibernateUtil.getSessionFactory().openSession();
Transaction tx=null;

tx=session.beginTransaction();

try
{

   Date temp = new SimpleDateFormat("yyyy-MM").parse(mhid.getMonthly_volunteer_ccyy()+"-"+mhid.getMonthly_volunteer_month());

   Calendar cal=Calendar.getInstance();
   cal.setTime(temp);
   int lastDay = cal.getActualMaximum(cal.DAY_OF_MONTH);
   String ccyymm = mhid.getMonthly_volunteer_ccyy()+mhid.getMonthly_volunteer_month();

   String fullDate = mhid.getMonthly_volunteer_ccyy()+"-"+mhid.getMonthly_volunteer_month();
   System.out.println("full date "+fullDate);

   int totalGross = 0;
   int totalAdvances = 0;
   int totalNetPayment = 0;
   int totalVolunteers = 0;

   Monthly_volunteer_honorarium_processing mvhp_new = new Monthly_volunteer_honorarium_processing();
   Monthly_honorarium_processing mhp_new = new Monthly_honorarium_processing();

   Query q=session.createSQLQuery("select m.volunteer_id, m.monthly_emolument, sum(case when period_diff('"+ccyymm+"', date_format(v.advance_date, '%Y%m'))>=2 and v.installment_pending>0 then v.emi else 0 end) as aliaas from m_volunteer m left join volunteer_advance v on m.volunteer_id=v.volunteer_id where m.active_status='active' and m.volunteer_role!=(select m_volunteer_role from m_volunteer_role where m_volunteer_role_description='Priest') and m.m_deity_dependent_honorarium!='true' group by m.volunteer_id")
   .addScalar("m.volunteer_id", Hibernate.INTEGER)
   .addScalar("m.monthly_emolument", Hibernate.INTEGER)
   .addScalar("aliaas", Hibernate.INTEGER);

   ScrollableResults results = q.scroll();

   while(results.next())
   {      

       Object[] row = (Object[]) results.get();

       System.out.println("rows " + row[0].toString() +" "+ row[2].toString() +" "+ row[1].toString());

       Monthlyhonorariumcompid mhid_new = new Monthlyhonorariumcompid(mhid.getMonthly_volunteer_month(), mhid.getMonthly_volunteer_ccyy(), row[0].toString());   

       mvhp_new.setMonthlyhonorariumcompid(mhid_new);

       mvhp_new.setGross_honorarium_amount(row[1].toString());

       mvhp_new.setTotal_advances(row[2].toString());  

       Integer netPayment =  (Integer)row[1] - (Integer)row[2];

       mvhp_new.setNet_payment(netPayment.toString());

       mvhp_new.setUpdated_by(mvhp.getUpdated_by());

       mvhp_new.setUpdated_date_time(mvhp.getUpdated_date_time());

       totalGross = totalGross + (Integer)row[1];
       totalAdvances = totalAdvances + (Integer)row[2];
       totalNetPayment = totalNetPayment + netPayment;
       totalVolunteers++;

       session.save(mvhp_new);
       session.flush();
       session.clear();

       if(results.isLast())
       {
           Query q1 = session.createSQLQuery("select v.volunteer_advance_id, v.installment_pending from volunteer_advance v where v.installment_pending>0 and period_diff('"+ccyymm+"',  date_format(v.advance_date, '%Y%m'))")
           .addScalar("v.volunteer_advance_id", Hibernate.INTEGER)
           .addScalar("v.installment_pending", Hibernate.INTEGER); 

           ScrollableResults scrl = q1.scroll();

           while(scrl.next())
           {

               Object[] tuple = (Object[]) scrl.get();

               M_volunteer_advance mva = (M_volunteer_advance) session.load(M_volunteer_advance.class, tuple[0].toString());

               Integer decrementCount = (Integer)row[1];  // bug
               decrementCount--;

               mva.setInstallment_pending(String.valueOf(decrementCount));

               session.update(mva);
               session.flush();
               session.clear();

           }
       }

   }     

   mhp.setTotal_volunteers_processed(new Integer(totalVolunteers).toString());
   mhp.setGross_honorarium_amount(new Float(totalGross).toString());
   mhp.setTotal_advances(new Double(totalAdvances).toString());
   mhp.setNet_payment(new Double(totalNetPayment).toString());
   session.save(mhp);

   tx.commit();

}   
catch(Exception e)
{
    tx.rollback();
    e.printStackTrace();
    return false;
}
finally
{
    session.close();
}
return true;
}