Vaadin雜集

container.addNestedContainerProperty("warehouse.warehouseName");
container.addNestedContainerProperty("product.productName");
        
this.setVisibleColumns(VISIBLE_COLUMNS);
this.setColumnHeaders(HEADERS);

以上順序不能改變，否則報錯，如下：

java.lang.IllegalArgumentException: Ids must exist in the Container or as a generated column, missing id: warehouse.warehouseName

以下順序不能改變：

this.setVisibleColumns(VISIBLE_COLUMNS);
this.setColumnHeaders(HEADERS);