Hi Luiz,

You said you did model.set on the new data 'right after loading additional set of data', did you use method or event on Collection to find out when that happens?  Ideally, you would want the model to be change with the new property before it gets to ListView, which you can do through Model extend (http://jet.us.oracle.com/trunk/jsdocs/oj.Model.html#extend , using one of the callbacks)

I think your approach is not working because you are updating the model with the new property before they are rendered by ListView but after they are in the Collection.  That's why adding a timeout works.

Thanks,

Chadwick

Right, no events on Collection is fired because CollectionTableDataSource explicitly suppresses Collection events from firing. 

Alternatively, you could listen for 'sync' event from CollectionTableDataSource instead:

    this.datasource.on("sync", function(event) {

      var startIndex = event.startIndex;

      // call my webservices at this point

....

      var busyContext = Context.getContext(ojlistview_elem).getBusyContext();

      busyContext.whenReady().then(function(){

         // but update model here

      });

    });

You'll have to update the models after the items are rendered, and you can do that using the BusyContext. 

Right, unfortunately CollectionDataProvider do not fire an equivalent event.

I would for now use CollectionTableDataSource to get you unblock, and at the same time file an ER for an DataProvider event that is fired whenever a fetch happens.  I have seen multiple use case of something similar before, so I think it's worthwhile we look into supporting this kind of use case.

So just to confirm when your busy context is resolve and you are updating the Model object, the items in ListView are already rendered?  If that is the case it should work.  ListView should be getting an update event from the Collection and display the updates in the list.