ListGrid + Adaptive Filter + Paging

[khoa]

I am adapting the Showcase adaptive filter example and query my data via GWT-RPC instead. If I enable paging via startRow and endRow, the filtering on my listgrid no longer works. No matter what I type in the filter box, it just reloads the unfiltered records. If I disable paging and just download the whole data all in one swoop, the filtering is working. How do I make filtering work with server-side paging?

Thanks,
Khoa

Code fragments:

/* Client side */
public void onModuleLoad() {
		DataSource dataSource = AlertDS.getInstance();
		ListGridField subsId = new ListGridField("subscriberId", "Subscriber");
		ListGridField actionTag = new ListGridField("actionTag", "Action Tag");
		
		final ListGrid alertGrid = new ListGrid();
		alertGrid.setWidth(400);
		alertGrid.setHeight(300);
		alertGrid.setShowFilterEditor(true);
		alertGrid.setFilterOnKeypress(true);
		
		alertGrid.setAlternateRecordStyles(true);
		alertGrid.setShowAllRecords(false);
		alertGrid.setAutoFetchData(true);
		alertGrid.setAutoFetchAsFilter(true);
		alertGrid.setDataSource(dataSource);
		
		alertGrid.setFields(subsId, actionTag);
		
		alertGrid.draw();
	}

/* Datasource */
public class AlertDS extends GwtRpcDataSource {

	private static AlertDS instance = null;
	private static RoamMonitorServiceAsync service;
	public static DataSource getInstance() {
		if (instance == null) {  
			instance = new AlertDS("alertDS");  
		}  
		return instance;  
	}
	
	private AlertDS(String id) {
		setID(id);
		DataSourceTextField subsId = new DataSourceTextField("subscriberId", "Subscriber", 128, true);
		DataSourceTextField actionTag = new DataSourceTextField("actionTag", "Action Tag", 100, true);
		setFields(subsId, actionTag);
		service = GWT.create(RoamMonitorService.class);
		
	}

	@Override
	protected void executeFetch(final String requestId, DSRequest request,
			final DSResponse response) {
		// Paging, sorting support
		int startRow = request.getStartRow().intValue(); 
		int endRow = request.getEndRow().intValue();
		String sortedBy = request.getSortedBy();

		service.getAlerts("3014441700", startRow, endRow, sortedBy, 
				new AsyncCallback<ArrayList<Alert>> () {

			@Override
			public void onFailure(Throwable caught) {
				response.setStatus (RPCResponse.STATUS_FAILURE);
                processResponse (requestId, response);

			}

/* Server side -- service implementation */
       @Override
	public ArrayList<Alert> getAlerts(String subscriber, int startRow,
			int endRow, String sortedBy) {
                // For testing purpose: generate (endRow-startRow+1) dummy alerts
		return generateDummyAlerts(subscriber, startRow, endRow);
	}

[vnta]

Hello Khoa,

Did any one get back to you on this? I am having the same issue.

Thanks,

[Isomorphic]

This is a really ancient thread, but we've noticed it comes up for some Google searches, so we thought we'd add a reply:

You can use a dataProtocol:clientCustom DataSource to connect to GWT-RPC or indeed any kind of system that can return data, whether it goes over a network or not. SmartGWT doesn't assume anything about how you are retrieving the data. You simply get a DSRequest object, and you are required to produce a DSResponse object.

While GWT-RPC is basically obsolete, there is a thread here about how to connect a DataSource to GWT-RPC via this mechanism:

https://forums.smartclient.com/forum...implementation