ADF内存查询及绑定数据

    /**
     *
     * 扫描报到证号执行方法
     */
    public void bdzAction(ClientEvent clientEvent) {
        /**
         * Bindings做法步骤
         * 1 根据bdzh内存查询
         * 2 使用ADFUtils.setBoundAttributeValue("")
         * 3 执行Commit方法： ADFUtils.executeByOperation("Commit")
         */
        
        //业务层操作，不推荐，因为UI-Bindings-BC，这三层关系，操作BC层结果不一定会响应到UI，操作Bindings会立刻响应到UI层
//        DCIteratorBinding dcBinding = ADFUtils.findIterator("JyglBdzView1Iterator");
//        JyglBdzViewImpl vo = (JyglBdzViewImpl) dcBinding.getViewObject();
//        //        String bdzh = (String) JSFUtils.getElExpression("#{bdzrkBean.bdzh}");
//        String bdzh = (String) clientEvent.getParameters().get("bdzValue");
//        String yhbh = UserOperation.getYhbh();
//        vo.setWhereClause("Bdzh = '" + bdzh + "'");
//        vo.executeQuery();
//        if (vo.getEstimatedRowCount() > 0) {
//            Row row = vo.first();
//            row.setAttribute("Rkr", yhbh);
//            row.setAttribute("Rksj", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
//            row.setAttribute("Bdzzt", 1);
//            vo.getDBTransaction().commit();
//        } else {
//            JSFUtils.addFacesInformationMessage("不存在该报到证");
//        }
//        vo.setWhereClause(null);
//        this.setBdzh("");
//        ADFUtils.refreshTable("JyglBdzView1Iterator", (RichTable) JSFUtils.findComponentInRoot("t2"));//运行时有错，第二个参数改成this.getRichTable()
//        ADFUtils.refresh(JSFUtils.findComponentInRoot("it1"));
        
        //绑定层操作，优先推荐，内存查询可用ViewCriteria（有公共封装类调用，初学最好暂时不调用，自己写）,setWhereClause(本身是数据库查询的，但是setQueryMode可设内存查), RowMatch查询
        //优先使用ViewCriteria，这种查询方式不会影响到原来的结果集
        String bdzh = this.getBdzh();
        String yhbh = UserOperation.getYhbh();
        System.out.println("报到证：" + bdzh);
        DCIteratorBinding dcBinding = ADFUtils.findIterator("JyglBdzView1Iterator");
        JyglBdzViewImpl vo = (JyglBdzViewImpl) dcBinding.getViewObject();
        
        //1,ViewCtriteria查询
        ViewCriteria vc = vo.createViewCriteria();
        vc.setName("criteria");
        ViewCriteriaRow vcRow = vc.createViewCriteriaRow();
        ViewCriteriaItem item = vcRow.ensureCriteriaItem("Bdzh");
        item.setOperator("=");
        item.setValue(bdzh);
        vc.add(vcRow);
        vo.applyViewCriteria(vc);
        vo.executeQuery();
        vo.findByViewCriteria(vc, -1, ViewObject.QUERY_MODE_SCAN_ENTITY_ROWS);
        if (vo.getEstimatedRowCount() > 0) {
            ADFUtils.setBoundAttributeValue("Rkr", yhbh);
            ADFUtils.setBoundAttributeValue("Rksj", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
            ADFUtils.setBoundAttributeValue("Bdzzt", 1);
            ADFUtils.executeByOperation("Commit");
        } else {
            JSFUtils.addFacesInformationMessage("不存在该报到证");
        }
        vo.removeViewCriteria("criteria");

        //2,setWhereClause查询(有问题：页面列表结果只显示EO单表内容，VO是多表关联的话，其他表的字段值没有显示)
//        vo.setWhereClause("Bdzh = '" + bdzh + "'");
//        vo.setQueryMode(ViewObject.QUERY_MODE_SCAN_ENTITY_ROWS);
//        vo.executeQuery();
//        if (vo.getEstimatedRowCount() > 0) {
//            ADFUtils.setBoundAttributeValue("Rkr", yhbh);
//            ADFUtils.setBoundAttributeValue("Rksj", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
//            ADFUtils.setBoundAttributeValue("Bdzzt", 1);
//            ADFUtils.executeByOperation("Commit");
//        }
//        vo.setWhereClause(null);
    
        //3,RowMatch查询，只查询内存(也存在问题，和setWhereClause一样)
//        RowMatch rm = new RowMatch("Bdzh = '" + bdzh + "'");
//        vo.setRowMatch(rm);
//        vo.setQueryMode(ViewObject.QUERY_MODE_SCAN_ENTITY_ROWS);
//        vo.executeQuery();
//        if (vo.getEstimatedRowCount() > 0) {
//            ADFUtils.setBoundAttributeValue("Rkr", yhbh);
//            ADFUtils.setBoundAttributeValue("Rksj", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
//            ADFUtils.setBoundAttributeValue("Bdzzt", 1);
//            ADFUtils.executeByOperation("Commit");
//        }
//        vo.setRowMatch(null);
        System.out.println(vo.getQuery());
        this.setBdzh("");
        ADFUtils.refreshTable("JyglBdzView1Iterator", this.getRichTable());
        ADFUtils.refresh(JSFUtils.findComponentInRoot("it1"));
    }

    /**
     * 判断数据库中是否存在该学号学生
     */
    private boolean isExit(String xh) {
        boolean flag = false;
        XsxxglXsjbxxVOImpl vo =
            (XsxxglXsjbxxVOImpl) ADFUtils.findIterator("XsxxglXsjbxxVO1Iterator").getViewObject(); //学生基本信息vo
        ViewCriteria vc = vo.createViewCriteria();   
        vc.setName("criteria");   
        ViewCriteriaRow vcRow = vc.createViewCriteriaRow();   
        ViewCriteriaItem item = vcRow.ensureCriteriaItem("Xh");   
        item.setOperator("=");   
        item.setValue(xh);   
        vc.add(vcRow);   
        RowIterator it = vo.findByViewCriteria(vc, -1, vo.QUERY_MODE_SCAN_DATABASE_TABLES);
        if (it.getRowCount() > 0) {   
            flag = true;
        }
        vo.removeViewCriteria("criteria");  
        return flag;
    }

    /**  
     * 查询年级专业是否有些专业还没有设置学费 
     */  
    private boolean hasEmptyFy(String njAttr) {
        boolean flag = false;   
        SfglXfViewImpl vo =   
            (SfglXfViewImpl) ADFUtils.findIterator("SfglXfView1Iterator").getViewObject(); //学费vo   
        ViewCriteria vc = vo.createViewCriteria();      
        vc.setName("criteria");      
        ViewCriteriaRow vcRow = vc.createViewCriteriaRow();   
        vcRow.setAttribute("Nj", "in ("+njAttr+")");
        vc.add(vcRow); 
        ViewCriteriaRow vcRow2 = vc.createViewCriteriaRow();
        vcRow2.setConjunction(ViewCriteriaComponent.VC_CONJ_AND);
        vcRow2.setAttribute("Fy", "is null");
        vc.add(vcRow2);   
        RowIterator it = vo.findByViewCriteria(vc, -1, vo.QUERY_MODE_SCAN_DATABASE_TABLES); 
        System.out.println("count:"+it.getRowCount());
        if (it.getRowCount() > 0) {      
            flag = true;   
        }   
        vo.removeViewCriteria("criteria");     
        return flag;   
    }

 vcRow2.setConjunction(ViewCriteriaComponent.VC_CONJ_AND);  这句是连接关系