All Code related to Part 2 of my series on Vaadin Grid

VaadinGrid-3.1.java

HeaderRow filterRow = grid.appendHeaderRow();

VaadinGrid-3.2.java

HeaderCell manufacturerFilter = filterRow.getCell("manufacturer");

VaadinGrid-3.3.java

TextField textField = new TextField();
textField.setImmediate(true);
//On Change of text, filter the data of the grid
textField.addTextChangeListener(getManufacturingFilterListener());
manufacturerFilter.setComponent(textField);
 
/**
 * Returns the TextChangeListener that gets triggered
 *
 * @return
 */
private TextChangeListener getManufacturingFilterListener() {
 return new TextChangeListener() {
  /**
   *
   */
  private static final long serialVersionUID = -2368474286053602744L;
 
  @Override
  public void textChange(TextChangeEvent event) {
   String newValue = (String) event.getText();
   @SuppressWarnings("unchecked")
   BeanItemContainer<VehicleInfo> container = ((BeanItemContainer<VehicleInfo>) grid
     .getContainerDataSource());
   // This is important, this removes the previous filter
   // that was used to filter the container
   container.removeContainerFilters("manufacturer");
   if (null != newValue && !newValue.isEmpty()) {
    container.addContainerFilter(new SimpleStringFilter(
      "manufacturer", newValue, true, false));
   }
   grid.recalculateColumnWidths();
  }
 };
}

VaadinGrid-3.4.java

//Get the container if you have already set it to grid and
//wrap it in GeneratedPropertyContainer
 
GeneratedPropertyContainer container = new GeneratedPropertyContainer(
 grid.getContainerDataSource());
grid.setContainerDataSource(container);
// Add a generated Column to the table
container.addGeneratedProperty("totalSalesTillDate",
 new PropertyValueGenerator<double>() {
 
 /**
  *
  */
 private static final long serialVersionUID = -7625273505835964597L;
 
 @Override
 public Double getValue(Item item, Object itemId,
  Object propertyId) {
        VehicleInfo vehicleInfo =(VehicleInfo) itemId);
        Long y2012 = vehicleInfo.getSales2012().getTotalSales();
 Long y2013 = vehicleInfo.getSales2013().getTotalSales();
 Long y2014 = vehicleInfo.getSales2014().getTotalSales();
 
 return new Double(y2012 + y2013 + y2014) / (1000000 * 12);
 }
 
 @Override
 public Class<double> getType() {
 return Double.class;
 }
 });
grid.getColumn("totalSalesTillDate")
 .setHeaderCaption("Sales Till Date");
/*
 * Remove the properties you wish to hide. Have done it already in
 * native container? even then you have do it as this is a new container
 */
container.removeContainerProperty("id");
// A new getter called Total Sales was added for YearlySales
container.removeContainerProperty("sales2012.totalSales");
container.removeContainerProperty("sales2013.totalSales");
container.removeContainerProperty("sales2014.totalSales");