ListGrid datasource allows adding multiple rows with the same primarykey value

[JohnSmith]

Hello,

I have a ListGrid with 2 fields Area and Name. I have set Area as primaryKey. When adding 2 rows with the same Area value, I get no error although the values should be unique. Also, if i modify the Name of the 2nd row, the 1st row's Name is the one being edited.

I am using SmartGwt v3.0

Here is a sample code:

public void onModuleLoad() {
    VLayout canvas = new VLayout();
    canvas.setWidth(300);
    canvas.setLeft(20);
    canvas.setHeight(500);

    final ListGrid listGrid = new ListGrid();
    listGrid.setAlternateRecordStyles(true);
    listGrid.setEmptyMessage("Empty list!");
    listGrid.setAutoFetchData(true);
    
    DataSourceIntegerField areaField = new DataSourceIntegerField("area", "Area");
    DataSourceTextField nameField = new DataSourceTextField("name", "Name");
    areaField.setPrimaryKey(true);
    
    DataSource dataSource = new DataSource();
    dataSource.setClientOnly(true);
    dataSource.setFields(areaField, nameField);
    listGrid.setDataSource(dataSource);
    
    IButton addDataButton = new IButton("Add Data");
    addDataButton.setLeft(0);
    addDataButton.addClickHandler(new ClickHandler() {
        public void onClick(ClickEvent event) {
            listGrid.startEditingNew();
        }
    });
    
    canvas.addMember(addDataButton);
    canvas.addMember(listGrid);
    
    canvas.draw();
}