Add stop words on query

meilisearch-core/src/bucket_sort.rs

@@ -69,8 +69,11 @@ where
         None => return Ok(Vec::new()),
     };
 
+    let stop_words = main_store.stop_words_fst(reader)?.unwrap_or_default();
+
     let context = QTContext {
         words_set,
+        stop_words,
         synonyms: synonyms_store,
         postings_lists: postings_lists_store,
         prefix_postings_lists: prefix_postings_lists_cache_store,
@@ -198,8 +201,11 @@ where
         None => return Ok(Vec::new()),
     };
 
+    let stop_words = main_store.stop_words_fst(reader)?.unwrap_or_default();
+
     let context = QTContext {
         words_set,
+        stop_words,
         synonyms: synonyms_store,
         postings_lists: postings_lists_store,
         prefix_postings_lists: prefix_postings_lists_cache_store,

meilisearch-core/src/query_tree.rs

@@ -114,6 +114,7 @@ pub struct PostingsList {
 
 pub struct Context {
     pub words_set: fst::Set,
+    pub stop_words: fst::Set,
     pub synonyms: store::Synonyms,
     pub postings_lists: store::PostingsLists,
     pub prefix_postings_lists: store::PrefixPostingsListsCache,
@@ -180,6 +181,7 @@ pub fn create_query_tree(
 ) -> MResult<(Operation, HashMap<QueryId, Range<usize>>)>
 {
     let words = split_query_string(query).map(str::to_lowercase);
+    let words = words.filter(|w| !ctx.stop_words.contains(w));
     let words: Vec<_> = words.enumerate().collect();
 
     let mut mapper = QueryWordsMapper::new(words.iter().map(|(_, w)| w));

meilisearch-core/src/update/settings_update.rs

@@ -171,6 +171,9 @@ pub fn apply_stop_words_update(
         )?;
         return Ok(true)
     }
+
+    let stop_words_fst = fst::Set::from_iter(stop_words)?;
+    index.main.put_words_fst(writer, &stop_words_fst)?;
     Ok(false)
 }