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Merge #598

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598: Matching query terms policy r=Kerollmops a=ManyTheFish

## Summary

Implement several optional words strategy.

## Content

Replace `optional_words` boolean with an enum containing several term matching strategies:
```rust
pub enum TermsMatchingStrategy {
    // remove last word first
    Last,
    // remove first word first
    First,
    // remove more frequent word first
    Frequency,
    // remove smallest word first
    Size,
    // only one of the word is mandatory
    Any,
    // all words are mandatory
    All,
}
```

All strategies implemented during the prototype are kept, but only `Last` and `All` will be published by Meilisearch in the `v0.29.0` release.

## Related

spec: https://github.com/meilisearch/specifications/pull/173
prototype discussion: https://github.com/meilisearch/meilisearch/discussions/2639#discussioncomment-3447699


Co-authored-by: ManyTheFish <many@meilisearch.com>
This commit is contained in:
bors[bot]
2022-08-22 15:51:37 +00:00
committed by GitHub
parent b46225070f 5391e3842c
commit 18886dc6b7
11 changed files with 244 additions and 140 deletions
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4
benchmarks/benches/utils.rs
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@ -11,7 +11,7 @@ use milli::heed::EnvOpenOptions;
use milli::update::{
IndexDocuments, IndexDocumentsConfig, IndexDocumentsMethod, IndexerConfig, Settings,
};
use milli::{Filter, Index, Object};
use milli::{Filter, Index, Object, TermsMatchingStrategy};
use serde_json::Value;
pub struct Conf<'a> {
@ -119,7 +119,7 @@ pub fn run_benches(c: &mut criterion::Criterion, confs: &[Conf]) {
b.iter(|| {
let rtxn = index.read_txn().unwrap();
let mut search = index.search(&rtxn);
search.query(query).optional_words(conf.optional_words);
search.query(query).terms_matching_strategy(TermsMatchingStrategy::default());
if let Some(filter) = conf.filter {
let filter = Filter::from_str(filter).unwrap().unwrap();
search.filter(filter);