I mean you can use sqlite as an index and then rebuild all of Lucene on top of it. It's non-trivial to build search quality on top of actual search libraries too.
O'Reilly's "Relevant Search" isn't the worst here, but you'll be porting/writing a bit yourself.
O'Reilly's "Relevant Search" isn't the worst here, but you'll be porting/writing a bit yourself.