HierarchicalCollectionView: One time sort?

Question

I have an AdvancedDataGrid that relies on a HierarchicalCollectionView as it's dataProvider. What I'd like to do is sort the data when it is first loaded, but then disable the sort so that anything that is added after the initial load doesn't cause the grid to auto-sort again. I tried something like this:

this._myDataProvider = new HierarchicalCollectionView(
                           new HierarchicalData(this._model.rootTasks));

var mySort:Sort = new Sort();                   
mySort.fields = [new SortField("startDate")];

this._tasksDataProvider.sort = taskSorting;
this._tasksDataProvider.refresh();
this._tasksDataProvider.sort = null;

But setting the sort to null just leaves the data unsorted. I guess what I'm asking is: how can I sort the underlying hierarchical data since it seems setting the sort property will keep it dynamically sorting. Thanks for any help you can provide.

Answer 1

Personally, I would change the sort order when you're getting the data. Either it's done on the server side or when you parse the data (ie. in your model). You can do a one time sort using Array with sortOn.