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optimize proximity criterion

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many 2021-03-02 14:46:50 +01:00 committed by Kerollmops
parent 246286f0eb
commit cdaa96df63
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1 changed files with 6 additions and 4 deletions
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10
milli/src/search/criteria/proximity.rs
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@ -205,14 +205,16 @@ fn resolve_candidates<'t>(
cache: &mut HashMap<(Operation, u8), Vec<(Query, Query, RoaringBitmap)>>,
) -> anyhow::Result<Vec<(Query, Query, RoaringBitmap)>>
{
fn pair_combinations(mana: u8) -> impl Iterator<Item = (u8, u8)> {
(0..=mana).map(move |m| (mana - m, m))
fn pair_combinations(mana: u8, left_max: u8) -> impl Iterator<Item = (u8, u8)> {
(0..=mana.min(left_max)).map(move |m| (m, mana - m))
}
let pair_max_proximity = 7;
let mut output = Vec::new();
for (pair_p, left_right_p) in pair_combinations(proximity) {
for (left_p, right_p) in pair_combinations(left_right_p) {
for (pair_p, left_right_p) in pair_combinations(proximity, pair_max_proximity) {
for (left_p, right_p) in pair_combinations(left_right_p, left_right_p) {
let left_key = (left.clone(), left_p);
if !cache.contains_key(&left_key) {
let candidates = resolve_operation(ctx, left, left_p, cache)?;