Flex: Update data-base after drag-move?

Question

OK I have an AdvancedDataGrid. The data I feed it is XML that looks like this:

<stat associate="Sam Smith" date="07/08/09" customer="James Frank"/>
<stat associate="John Doe" date="09-07-08" customer ="Amanda Jones"/>
<stat associate="John Doe" date="09-07-09" customer ="Henry Scott"/>

But I am grouping by associate so it ends up looking like a tree like this:

Sam Smith
07/08/09    James Frank

John Doe
09-07-08    Amanda Jones
09-07-09    Henry Scott

I am trying to make it so you can re-assign customers to different associates by dragging them from one to another. I set dragMoveEnabled so I can actually click on and move it to another associate and it visually works perfect. But I need to detect who received what so I can update the data-base with the change.

Does anyone know how to do that?

Thanks!!

UPDATE: I tried looking at the flat data afterwards like so:

public function onDragComplete(event:Event):void 
{ 
    var adg:AdvancedDataGrid = AdvancedDataGrid(event.currentTarget);
    var hcv:HierarchicalCollectionView = HierarchicalCollectionView(adg.dataProvider);
    var gc:GroupingCollection = GroupingCollection(hcv.source);
    trace(gc.source);
}

And it has not changed, maybe the non-flat data changes tho, but I am not sure how to view the non-flat data?

Answer 1

I believe changes to datagrid should change the underlying dataProvider. You can listen to changes to the dataProvider (Eg, the PropertyChanged event for ArrayCollections), and then send the server the change.