This week's book giveaways are in the iOS and Features new in Java 8 forums. We're giving away four copies each of Barcodes with iOS: Bringing together the digital and physical worlds and Core Java for the Impatient and have the authors on-line! See this thread and this one for details.
This may sound stupid...but what is a row header? Is it something like a "Click Here" link at the beginning of each row? You may want to look at MyFaces component t:datatable which can display dynamic number of columns for a table. h:datatable does not have that feature.