Fix the prefix system
@@ -397,24 +397,22 @@ pub fn traverse_query_tree<'o, 'txn>(
array
};
- let mut results: Vec<&Set<_>> = Vec::new();
-
// We retrieve the cached postings lists for all
// the words that starts with this short prefix.
let result = ctx.prefix_postings_lists.prefix_postings_list(reader, prefix)?.unwrap_or_default();
let key = PostingsKey { query, input: word.clone().into_bytes(), distance: 0, is_exact: false };
postings.insert(key, result.matches);
- results.push(&result.docids);
+ let prefix_docids = &result.docids;
// We retrieve the exact postings list for the prefix,
// because we must consider these matches as exact.
let result = ctx.postings_lists.postings_list(reader, word.as_bytes())?.unwrap_or_default();
let key = PostingsKey { query, input: word.clone().into_bytes(), distance: 0, is_exact: true };
postings.insert(key, result.matches);
- results.push(&result.docids);
+ let exact_docids = &result.docids;
let before = Instant::now();
- let docids = sdset::multi::Union::new(results).into_set_buf();
+ let docids = sdset::duo::Union::new(prefix_docids, exact_docids).into_set_buf();
println!("{:2$}prefix docids construction took {:.02?}", "", before.elapsed(), depth * 2);
Cow::Owned(docids)
@@ -434,7 +432,7 @@ pub fn traverse_query_tree<'o, 'txn>(
while let Some(input) = stream.next() {
if let Some(result) = ctx.postings_lists.postings_list(reader, input)? {
let distance = dfa.eval(input).to_u8();
- let is_exact = *prefix == false && distance == 0 && input.len() == word.len();
+ let is_exact = distance == 0 && input.len() == word.len();
docids.extend_from_slice(&result.docids);
let key = PostingsKey { query, input: input.to_owned(), distance, is_exact };
postings.insert(key, result.matches);
