Add filters to LiveGrid? - gwt

Question

I am using gxt's LiveGrid. I want to add filters. I have added below few lines but data is not filtered. Am I missing any thing here?
GridFilters filters = new GridFilters();
filters.setLocal(true);
StringFilter nameFilter = new StringFilter("column name");
filters.addFilter(nameFilter);
filters.init(liveGrid);
liveGrid.addPlugin(filters);

Answer 1

From the filter javadoc :
To add a filter to a Grid column, create an instance of a concrete subclass of Filter, passing to the constructor the ValueProvider for the column, then add the filter to a GridFilters
Your code sample seems too restrinct and should probably be parameterized. The StringFilter should be given a ValueProvider for the property of the model object you wish to filter. Following is a simple overview of how to create a Grid with Filters.
Let's say you have a class User
public class User implements Serializable {
private String name;
private Integer id;
// Setters and getters
}
public interface UserProperties extends PropertyAccess<User> {
#Path("id")
ModelKeyProvider<User> key();
ValueProvider<User, String> name();
}
To create a grid that will display your users, you would do as follow
private static final UserProperties props = GWT.create(UserProperties.class);
...
// Create column config
ColumnConfig<User, String> nameCol = new ColumnConfig<User, String>(props.name(), 200, "Name");
// Create column model
List<ColumnConfig<User, ?>> l = new ArrayList<ColumnConfig<User, ?>>();
l.add(nameCol);
ColumnModel<User> cm = new ColumnModel<User>(l);
// Create User store
ListStore<User> store = new ListStore<User>(props.key());
// Create your grid
final LiveGridView<User> liveGridView = new LiveGridView<User>();
liveGridView.setForceFit(true);
Grid<User> view = new Grid<User>(store, cm) {
#Override
protected void onAfterFirstAttach() {
super.onAfterFirstAttach();
// Get grid data
}
};
// Create a String filter for the column
StringFilter<User> nameFilter = new StringFilter<User>(props.name());
// Create a GridFilters
GridFilters<User> filters = new GridFilters<User>();
filters.initPlugin(grid);
filters.setLocal(true);
filters.addFilter(nameFilter);

Answer 2

GridFilters filters = new GridFilters();
filters.setLocal(true);
StringFilter nameFilter = new StringFilter("column name");
filters.addFilter(nameFilter);
filters.init(liveGrid);
liveGrid.addPlugin(filters);
If u want to get the data after filter applied u need to overide reload() method of AbstractGridFilters.