I think what you are trying to achieve is called taxonomy facet. There is a solution for that. Check for the slides for Taxonomy faceting. http://www.lucidimagination.com/solutions/webcasts/faceting
However, i don't know if you are able to render the hierachy all at once. The solution i point is for one hierachry at a time. devices (100) accessories (1000) if "device" is selected/clicked, then show --> Samsung (50) Sharp(50) If "Accessories" is selected/clicked, then show --> Samsung (500) Apple(500) -- View this message in context: http://lucene.472066.n3.nabble.com/nested-faceting-tp2389841p2449439.html Sent from the Solr - User mailing list archive at Nabble.com.