private void feedGrid() {
Grid groupsGrid=(Grid)getFellow("locationsGrid");
Rows gridRows=groupsGrid.getRows();
LocationManager manager=(LocationManager)WebApplication.lookup(LocationManager.LocalJNDIName);
List<Location> warehouses=manager.findByWarehouse(warehouseText.getText());
Iterator<Location> it=warehouses.iterator();
while(it.hasNext()){
Row row=new Row();
Location c=it.next();
row.appendChild(new Checkbox());