AdvancedDataGrid with contained DataGrid

With the AdvancedDataGrid you can use an item renderer with a hierarchical data set to display an entire row of data; i.e. you can span multiple AdvancedDataGrid columns with the renderer. You assign the item renderer to the AdvancedDataGrid control itself, not to a specific column, by using the AdvancedDataGrid rendererProviders property or MXML <mx:rendererProviders> tag. Within this you specify your child DataGrid as the renderer to an AdvancedDataGridRendererProvider.
My example uses an XMLList as the hierarchical data set dataProvider, but I have also included code (commented out) for an Array-based hierarchical data set dataProvider.

Demo can be test-driven here:
http://www.riamaven.com/FlexSolutions/ADGwithContainedDGDemo.html
Source code is there as well.

This cookbook recipe resulted from a question I asked at a March 2008 Adobe eSeminar during Adobe 2008 Online Developer Week. The solution was aided by an example coded by Sreenivas Ramaswamy from Adobe India as a result of my question.