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Code Issues Releases Wiki Activity

Use new term matching strategy logic in words ranking rule

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This commit is contained in:
Loïc Lecrenier 2023-03-30 13:15:43 +02:00
parent 2997d1f186
commit 35c16ad047
1 changed files with 17 additions and 37 deletions
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48
milli/src/search/new/words.rs
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@ -1,18 +1,16 @@
use std::collections::BTreeSet;
use roaring::RoaringBitmap;
use super::logger::SearchLogger;
use super::query_graph::QueryNodeData;
use super::query_graph::QueryNode;
use super::resolve_query_graph::compute_query_graph_docids;
use super::small_bitmap::SmallBitmap;
use super::{QueryGraph, RankingRule, RankingRuleOutput, SearchContext};
use crate::{Result, TermsMatchingStrategy};
use roaring::RoaringBitmap;
pub struct Words {
exhausted: bool, // TODO: remove
query_graph: Option<QueryGraph>,
iterating: bool, // TODO: remove
positions_to_remove: Vec<i8>,
nodes_to_remove: Vec<SmallBitmap<QueryNode>>,
terms_matching_strategy: TermsMatchingStrategy,
}
impl Words {
@ -21,7 +19,7 @@ impl Words {
exhausted: true,
query_graph: None,
iterating: false,
positions_to_remove: vec![],
nodes_to_remove: vec![],
terms_matching_strategy,
}
}
@ -40,26 +38,14 @@ impl<'ctx> RankingRule<'ctx, QueryGraph> for Words {
) -> Result<()> {
self.exhausted = false;
self.query_graph = Some(parent_query_graph.clone());
let positions_to_remove = match self.terms_matching_strategy {
self.nodes_to_remove = match self.terms_matching_strategy {
TermsMatchingStrategy::Last => {
let mut all_positions = BTreeSet::new();
for (_, n) in parent_query_graph.nodes.iter() {
match &n.data {
QueryNodeData::Term(term) => {
all_positions.extend(term.positions.clone());
parent_query_graph.removal_order_for_terms_matching_strategy_last()
}
QueryNodeData::Deleted | QueryNodeData::Start | QueryNodeData::End => {}
TermsMatchingStrategy::All => {
vec![]
}
}
let mut r: Vec<i8> = all_positions.into_iter().collect();
// don't remove the first term
r.remove(0);
r
}
TermsMatchingStrategy::All => vec![],
};
self.positions_to_remove = positions_to_remove;
self.iterating = true;
Ok(())
}
@ -83,18 +69,12 @@ impl<'ctx> RankingRule<'ctx, QueryGraph> for Words {
let this_bucket = compute_query_graph_docids(ctx, query_graph, universe)?;
let child_query_graph = query_graph.clone();
loop {
if self.positions_to_remove.is_empty() {
if self.nodes_to_remove.is_empty() {
self.exhausted = true;
break;
} else {
let position_to_remove = self.positions_to_remove.pop().unwrap();
let did_delete_any_node =
query_graph.remove_words_starting_at_position(position_to_remove);
if did_delete_any_node {
break;
}
}
let nodes_to_remove = self.nodes_to_remove.pop().unwrap();
query_graph.remove_nodes(&nodes_to_remove.iter().collect::<Vec<_>>());
}
Ok(Some(RankingRuleOutput { query: child_query_graph, candidates: this_bucket }))
@ -107,7 +87,7 @@ impl<'ctx> RankingRule<'ctx, QueryGraph> for Words {
) {
self.iterating = false;
self.exhausted = true;
self.positions_to_remove = vec![];
self.nodes_to_remove = vec![];
self.query_graph = None;
}
}