faceted search for ipad / iphone / android platform

i have been playing around with apache SOLR since last 3 weeks and very happy with the results. now we are trying 开发者_开发技巧to replicate the faceted search we offer on our website to our ipad, iphone and android apps

since these apps have their local sqlite db for offline access, i cannot go for an online xml web service based approach to compute the faceted search results

wondering if there is any lightweight solution like apache SOLR for tablet / mobile platforms which can index the data from sqlite?

thanks in advance

To the best of my knowledge, currently there are no Objective-C frameworks for faceted search on iOS devices.