Hibernate分頁排序
阿新 • • 發佈：2019-02-02
//Model 層(Pager.java) public class Pager<T> { private List<T> entityList;//分頁物件集合 private int totalCounts;//總條數 private int currentPage;//當前頁數 private int nextPage; //下一頁 private int prePage; //上一頁 private int pageCount; //總頁數 //get set省略 } //DAO層，DAO實現(moduleSearchDaoImpl.java) @Repository(value = "moduleSearchDao") public class ModuleSearchDaoImpl extends GenericDaoImpl<Module, Long> implements ModuleSearchDao { @SuppressWarnings("unchecked") @Override public List<Object[]> searchCount(String nameValue) { List<Object[]> list = new ArrayList<Object[]>(); String strsql = "select treeId.paId,count(*) from Module where treeId.name like '%" + nameValue + "%' group by treeId.paId"; list = getSession().createQuery(strsql).list(); return list; } /* * 注：firstResult要為maxResult的整數倍 */ @SuppressWarnings("unchecked") @Override public Pager<Module> searchByPropertyByPager(String propertyName, String nameValue, String orderName, boolean flag, int firstResult, int maxResult) { Pager<Module> p = new Pager<Module>(); List<Module> moduleList = new ArrayList<Module>(); if (null !=orderName && !"".equals(orderName) && "name".equals(orderName))// 按照中文排序 { int begin=firstResult; int end=firstResult+maxResult; String sql = null; if (null !=propertyName && !"".equals(propertyName))/// 按類別查詢 { if(flag)//升序排序 sql="select * from (select row_.*, rownum rownum_ from (select m.ID as M_ID,m.DESCS as M_DESCS, m.CREATEDATE as M_CREATEDATE, m.LOCATION as M_LOCATION, m.TREEID as M_TREEID, m.STATUSID as M_STATUSID, m.DATASTATUSID as M_DATASTAT, t.ID as T_ID, t.NAME as T_NAME, t.PAID as T_PAID, t.ICON as T_ICON, d.ID as D_ID, d.NAME as D_NAME, d.TYPE as D_TYPE, d.ORDERS as D_ORDERS from DMM.module m inner join DMM.TREE t on m.TREEID = t.ID left outer join DMM.DATA_DICTIONARY d on m.STATUSID = d.ID where t.PAID=" + new Long(propertyName) + " and t.NAME like '%" + nameValue + "%' order by nlssort(t.NAME,'NLS_SORT=SCHINESE_PINYIN_M') asc) row_ where rownum <= "+end+") where rownum_ > "+begin; else//降序排序 sql="select * from (select row_.*, rownum rownum_ from (select m.ID as M_ID,m.DESCS as M_DESCS, m.CREATEDATE as M_CREATEDATE, m.LOCATION as M_LOCATION, m.TREEID as M_TREEID, m.STATUSID as M_STATUSID, m.DATASTATUSID as M_DATASTAT, t.ID as T_ID, t.NAME as T_NAME, t.PAID as T_PAID, t.ICON as T_ICON, d.ID as D_ID, d.NAME as D_NAME, d.TYPE as D_TYPE, d.ORDERS as D_ORDERS from DMM.module m inner join DMM.TREE t on m.TREEID = t.ID left outer join DMM.DATA_DICTIONARY d on m.STATUSID = d.ID where t.PAID=" + new Long(propertyName) + " and t.NAME like '%" + nameValue + "%' order by nlssort(t.NAME,'NLS_SORT=SCHINESE_PINYIN_M') desc) row_ where rownum <= "+end+") where rownum_ > "+begin; } else/// 查詢全部 { if(flag)//升序排序 sql="select * from (select row_.*, rownum rownum_ from (select m.ID as M_ID,m.DESCS as M_DESCS, m.CREATEDATE as M_CREATEDATE, m.LOCATION as M_LOCATION, m.TREEID as M_TREEID, m.STATUSID as M_STATUSID, m.DATASTATUSID as M_DATASTAT, t.ID as T_ID, t.NAME as T_NAME, t.PAID as T_PAID, t.ICON as T_ICON, d.ID as D_ID, d.NAME as D_NAME, d.TYPE as D_TYPE, d.ORDERS as D_ORDERS from DMM.module m inner join DMM.TREE t on m.TREEID = t.ID left outer join DMM.DATA_DICTIONARY d on m.STATUSID = d.ID where t.NAME like '%" + nameValue + "%' order by nlssort(t.NAME,'NLS_SORT=SCHINESE_PINYIN_M') asc) row_ where rownum <= "+end+") where rownum_ > "+begin; else //降序排序 sql="select * from (select row_.*, rownum rownum_ from (select m.ID as M_ID,m.DESCS as M_DESCS, m.CREATEDATE as M_CREATEDATE, m.LOCATION as M_LOCATION, m.TREEID as M_TREEID, m.STATUSID as M_STATUSID, m.DATASTATUSID as M_DATASTAT, t.ID as T_ID, t.NAME as T_NAME, t.PAID as T_PAID, t.ICON as T_ICON, d.ID as D_ID, d.NAME as D_NAME, d.TYPE as D_TYPE, d.ORDERS as D_ORDERS from DMM.module m inner join DMM.TREE t on m.TREEID = t.ID left outer join DMM.DATA_DICTIONARY d on m.STATUSID = d.ID where t.NAME like '%" + nameValue + "%' order by nlssort(t.NAME,'NLS_SORT=SCHINESE_PINYIN_M') desc) row_ where rownum <= "+end+") where rownum_ > "+begin; } List<Object[]> list=getSession().createSQLQuery(sql).list(); //將資料新增到結果物件集中 for(Object[] i:list) { Tree t=new Tree(); t.setId(new BigDecimal(i[7].toString()).longValue());//i[7]:t.ID t.setName(i[8].toString());//i[8]:t.NAME t.setPaId(new BigDecimal(i[9].toString()).longValue());//i[9]:t.PAID t.setIcon(i[10].toString());//i[10]:t.ICON DataDictionary d=new DataDictionary(); d.setId(new BigDecimal(i[11].toString()).longValue());//i[11]:d.ID d.setName(i[12].toString());//i[12]:d.NAME d.setType(new BigDecimal(i[13].toString()).intValue());//i[13]:d.TYPE d.setOrders(new BigDecimal(i[14].toString()).intValue());//i[14]:d.ORDERS Module m=new Module(); m.setId(new BigDecimal(i[0].toString()).longValue());//i[0]:m.ID if(i[1]==null) m.setDescs("");//i[1]:m.DESCS else m.setDescs(i[1].toString());//i[1]:m.DESCS if(i[2]==null) m.setCreateDate(Timestamp.valueOf("1970-01-01 00:00:00"));//i[2]:m.CREATEDATE else m.setCreateDate((Timestamp)i[2]);//i[2]:m.CREATEDATE if(i[3]==null) m.setLocation("");//i[3]:m.LOCATION else m.setLocation(i[3].toString());//i[3]:m.LOCATION m.setTreeId(t); m.setStatusId(d); moduleList.add(m); } } else// 按照其他條件排序 { Criteria criteria = getSession().createCriteria(Module.class); criteria.createAlias("treeId", "tree"); if (StringUtils.isNotBlank(propertyName)) { criteria.add(Restrictions.eq("tree.paId", new Long(propertyName))); } if (StringUtils.isNotBlank(nameValue)) { criteria.add(Restrictions.like("tree.name", "%" + nameValue + "%")); } if (null != orderName && !"".equals(orderName)) { if (flag) criteria.addOrder(Order.asc(orderName)); else criteria.addOrder(Order.desc(orderName)); } if (maxResult > 0) { criteria.setFirstResult(firstResult); criteria.setMaxResults(maxResult); } criteria.setCacheable(true); moduleList = criteria.list();//得到查詢結果 } //設定結果集 p.setEntityList(moduleList); //設定總條數 Integer count=findAllCount(propertyName, nameValue); p.setTotalCounts(count); //設定總頁數 if(maxResult>0) { Integer pageCount=new Integer(0); if(count%maxResult==0)//總條數/每頁顯示數 剛好整除 { pageCount=(Integer)count/maxResult; } else { pageCount=(Integer)count/maxResult+1; } p.setPageCount(pageCount); } //設定當前頁數 if(maxResult>0) { Integer currentPage=new Integer(0); if(firstResult%maxResult==0)//開始條數為每頁顯示條數的倍數 { currentPage=(Integer)firstResult/maxResult+1; } p.setCurrentPage(currentPage); } return p; } //查詢記錄總條數 private Integer findAllCount(String propertyName, String nameValue) { Criteria criteria = getSession().createCriteria(Module.class); criteria.createAlias("treeId", "tree"); if (StringUtils.isNotBlank(propertyName)) { criteria.add(Restrictions.eq("tree.paId", new Long(propertyName))); } if (StringUtils.isNotBlank(nameValue)) { criteria.add(Restrictions.like("tree.name", "%" + nameValue + "%")); } Object countResult = criteria.setProjection(Projections.count("id")) .uniqueResult(); if (null != countResult) { return Integer.parseInt(countResult.toString()); } return 0; } }