code: function() {
  
  		this._data_names = this._data_source.getNames();
  		this._data_values = this._data_source.getValues();
  		this._data_uids = this._data_source.getUIDs();
  		this._count = this._data_uids.length;
  		this._fire('collection_changed');
  
  	}
docs: Refresh the DataView from it's Enumerable