Question

我有一个Vaadin表，我想动态添加行。

我试过的代码工作正常，当我点击添加行按钮时，表格中会出现一个新行。问题是，当我点击第二个，第三个等时间的按钮时，表中没有出现新行。我想在单击按钮时添加任意数量的行。我怎么能指甲呢？

以下是创建表格的代码：

    public Table createTable(BeanContainer beans) {

    table.setContainerDataSource(beans);
    table.setColumnHeader("PS_SECTION", "ID");
    table.setColumnHeader("NAME", "SECTION");
    table.setColumnHeader("VORDER","ORDER");

    table.addGeneratedColumn("ACTIVE", new Table.ColumnGenerator() {

        private static final long serialVersionUID = 1L;
        @Override
        public Object generateCell(final Table source, final Object itemId,
                Object columnId) {

            final CheckBox checkBox = new CheckBox("");
            Set<Object> keys = itemIdToCheckbox.keySet();

                for (Object key : keys) {                       
                        PS_SECTION PS = (PS_SECTION) sectionMap.get(key);

                        if (PS.getISACTIVE() == 1) { 
                            CheckIt(key,true);                              
                        }
                        else if(PS.getISACTIVE() == 0){ 
                            CheckIt(key,false);                         
                        }                               
                }

            checkBox.addAttachListener(new AttachListener() {
                @Override
                public void attach(AttachEvent event) { 
                    itemIdToCheckbox.put(itemId, checkBox);
                    tableToCheck.put(itemId, checkBox);                                                         
                }
            });

            checkBox.addDetachListener(new DetachListener() {
                @Override
                public void detach(DetachEvent event) {
                    itemIdToCheckbox.remove(itemId);
                    tableToCheck.remove(itemId);
                }
            });

            checkBox.addValueChangeListener(new Property.ValueChangeListener() {                    
                @Override
                public void valueChange(Property.ValueChangeEvent event) {                      
                    Boolean selected = (Boolean) event.getProperty().getValue();                                                                        
                }
            });

            return checkBox;                
        }               
    });   

    table.setMultiSelect(false);
    table.setVisibleColumns(new Object[]{"PS_SECTION", "NAME", "VORDER", "ACTIVE"});
    table.setEditable(true);
    table.setSelectable(true);
    table.setImmediate(true); 
    table.commit();
    return table;
}

这是容器代码：

    public BeanContainer createContainer() {                   
       beans.setBeanIdProperty("PS_SECTION");
        for (int i = 0; i < list.size(); i++) {
            PS_SECTION section = list.get(i);

                Long ps =  section.getPS_SECTION();
                String na = section.getNAME();
                Long is = section.getISACTIVE();
                Long isg = section.getISGLOBAL();
                Long or = section.getVORDER();
                Integer st = section.getSTATUS();

             beanlist.add(new PS_SECTION(ps, na, is, isg, or, st));       
        }           
        beans.addAll(beanlist);  
    return beans;
}

最后，行添加按钮代码：

addButton.addClickListener(new ClickListener() {            
        @Override
        public void buttonClick(ClickEvent event) {                                     
                 Object newbean = beans.addBean(new PS_SECTION(0L, null, 0L, 0L, 0L, 0));   
                 table.addItem(newbean);
        }
    });

还尝试以下方法以避免重复。同样的事情发生了

                    long in = 200;
                    Object newbean = beans.addBean(new PS_SECTION(in, null, 0L, 0L, 0L, 0));    
                    ++in;
                    table.addItem(newbean);

Answer 1

保持这一行： > db.geo.find() { "_id": ObjectId("586e663175c32828be59e3a9"), "zoneCoordinates": { "type": "Polygon", "coordinates": [ [ [2, 0], [6, 0], [6, 2], [2, 2], [2, 0] ] ] } } > db.geo.find({ "zoneCoordinates": { "$geoIntersects": { "$geometry": { "type": "Point", "coordinates": [3 ,1] } } } }).count() 1 在添加按钮clicklistener代码之外。也许你可以成为全球（类）成员;

动态添加多个表行

1 个答案: