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发表时间:2007-02-23
package com.t48.hr.util; import org.hibernate.Session; import org.hibernate.Transaction; import com.t48.hr.util.HBSessionFactory; public abstract class TransManager { public Session sess; public abstract void process() throws Exception; public void execute() throws Exception { Transaction trans=null; try { sess=HBSessionFactory.getCurrentSession(); trans=sess.beginTransaction(); process(); trans.commit(); } catch (Exception e) { trans.rollback(); e.printStackTrace(); throw e; // TODO: handle exception } finally{ HBSessionFactory.closeCurrentSession(); } } } 声明:ITeye文章版权属于作者,受法律保护。没有作者书面许可不得转载。
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发表时间:2007-02-23
package com.t48.hr.admin.bo; import java.util.ArrayList; import java.util.List; import org.hibernate.*; import com.t48.hr.util.*; import com.t48.hr.sys.dao.TParamDAO; import com.t48.hr.sys.vo.TParam; import com.t48.hr.sys.vo.TParamId; import com.t48.hr.util.HBSessionFactory; /* * * 基本参数业务处理逻辑 * */ public class baseBO { static TParamDAO dao = new TParamDAO();//生成一个dao实例 static Session session = null; //增加基本参数的大类一条记录 public static void insertbase(final TParam info){ try { TransManager demo = new TransManager(){ public void process() throws Exception { dao.save(info, sess); } }; demo.execute(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } // 根据code返回一个集合 public static List getFormNameList(long code){ List list = null; try { Session session =HBSessionFactory.getCurrentSession(); //根椐code号查出id号相等的字段 String again ="from TParam where id.code = "+code; Query againquery = session.createQuery(again); list = againquery.list(); } catch(Exception e) { e.printStackTrace(); } finally{ session.close(); } return list; } //修改一条记录 public static void updatebase(){ } //删除一条记录 public static int deletesplit(Long f){ System.out.println("I come to delete f "+f); int flag=0; final TParam demo = new TParam(); final TParamId id = new TParamId() ; id.setId(f); id.setCode(new Long(0)); demo.setId(id); try{ TransManager delete = new TransManager(){ public void process() throws Exception { dao.delete(demo, sess); } }; delete.execute(); flag=1; } catch(Exception e){ flag=0; e.printStackTrace(); } return flag; } //查询取ID最大值 public static Long selectbaseID(){ Long baseID = new Long(0); try{ TransManager delete = new TransManager(){ public void process() throws Exception { prameter1 = sess.createQuery("select max(t.id.id) from TParam t").uniqueResult(); System.out.println("dsfsdfsdf"); } }; delete.execute(); baseID=(Long)delete.prameter1; } catch(Exception e){ e.printStackTrace(); } return baseID; } //子项删除业务 public static void deletechild(final TParam id){ try{ TransManager delete = new TransManager(){ public void process() throws Exception { sess.delete(id); System.out.println("dsfsdfsdf"); } }; delete.execute(); } catch(Exception e){ e.printStackTrace(); } } public static List serarchid(final Long name){ ArrayList list=null; try{ TransManager delete = new TransManager(){ public void process() throws Exception { prameter1 =(List)sess.createQuery("from TParam where code="+name).list(); } }; delete.execute(); list=(ArrayList)delete.prameter1; } catch(Exception e){ e.printStackTrace(); } return list; } /*基本参数的子项删除之后,返回一个集合*/ public static List getBasecontent(final Long id){ ArrayList list=null; try{ TransManager delete = new TransManager(){ public void process() throws Exception { prameter1 =(List)sess.createQuery("from TParam where id.code ="+id).list(); } }; delete.execute(); list=(ArrayList)delete.prameter1; } catch(Exception e){ e.printStackTrace(); } return list; } } 利用一个bo来使用 |
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发表时间:2007-02-23
嘿嘿.异常处理上有点问题,重构成下面的:
package com.t48.hr.util; import org.hibernate.Session; import org.hibernate.Transaction; import com.t48.hr.util.HBSessionFactory; public abstract class TransManager { public Session sess; public abstract void process() throws Exception; public void execute() throws Exception { Transaction trans=null; sess=HBSessionFactory.getCurrentSession(); // 移到这里 try { trans=sess.beginTransaction(); process(); trans.commit(); } catch (Exception e) { if (trans != null) { // 要判断 trans.rollback(); } e.printStackTrace(); throw e; // TODO: handle exception } finally{ HBSessionFactory.closeCurrentSession(); } } } |
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发表时间:2007-02-23
代码要简化,类似demo一样的东西,查询,update只需要一个就可以了!
粗粗看了看,发现有如下代码: static TParamDAO dao = new TParamDAO();//生成一个dao实例 static Session session = null; Session为static不会产生线程安全问题?不过好象这个session从来没有使用。 另外看到楼主有如下代码: public static List serarchid(final Long name){ ArrayList list=null; try{ TransManager delete = new TransManager(){ public void process() throws Exception { prameter1 =(List)sess.createQuery("from TParam where code="+name).list(); } }; delete.execute(); list=(ArrayList)delete.prameter1; } 既然在process里面如此使用session,还是建议将process声明成如下方式: process(HibernateSession sess) throws Exception 一点粗浅见解! |
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发表时间:2007-02-23
...学习了
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发表时间:2007-02-23
static TParamDAO dao = new TParamDAO();//生成一个dao实例 static Session session = null; 这个是我没有删掉的代码.忘记看了... 我也不知道,线程怎么处理 |
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发表时间:2007-03-06
prameter1沒有聲明啊?
解決辦法 在transManager中加入 public Object prameter1; |
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