#jsf-treetable

Nested tables? Do you actually mean TreeTables? PrimeFaces is throwing out so many new widgets every 6 months, some old features are just not being improved anymore. Check out their new wisget set in showcases. Also, what is maybe not always the best solution, but often helps, is to develop your own custom widget. It is actually easy to do, and will give you the best understanding of how certain components function. I work with JSF for almost 8 years already, I am a senior dev, and I still manage to find enormous amount of bugs within their framework. Some of them I also reported, which were later turned into features in the new versions.