kontex 

Kontex is a full text search index.
Examples
use ;
use HashMap;
let mut index = new;
let mut attrs = new;
attrs.insert;
attrs.insert;
let document = from_attributes;
let _ = index.add_document;
let mut search: = new;
search.insert;
let result = index.search;
println!;
assert_eq!;
Status
This is under very active development so APIs may change or break without warning. If you need stable search indexing, I suggest you use something like Apache Lucene.