mirror of
https://github.com/meilisearch/MeiliSearch
synced 2024-12-27 15:10:05 +01:00
Merge pull request #103 from meilisearch/plane-sweep-proximity
Plane-Sweep proximity
This commit is contained in:
Clément Renault
GitHub
commit
f9be3ad3fd
161
Cargo.lock
generated
161
Cargo.lock
generated
@ -53,8 +53,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ca2925c4c290382f9d2fa3d1c1b6a63fa1427099721ecca4749b154cc9c25522"
|
||||
dependencies = [
|
||||
"askama_shared",
|
||||
"proc-macro2",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -74,10 +74,10 @@ dependencies = [
|
||||
"nom",
|
||||
"num-traits",
|
||||
"percent-encoding",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"serde",
|
||||
"syn",
|
||||
"syn 1.0.60",
|
||||
"toml",
|
||||
]
|
||||
|
||||
@ -622,9 +622,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c287d25add322d9f9abdcdc5927ca398917996600182178774032e9f8258fedd"
|
||||
dependencies = [
|
||||
"proc-macro-hack",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -1184,6 +1184,28 @@ dependencies = [
|
||||
"cfg-if 1.0.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "logging_timer"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "40d0c249955c17c2f8f86b5f501b16d2509ebbe775f7b1d1d2b1ba85ade2a793"
|
||||
dependencies = [
|
||||
"log",
|
||||
"logging_timer_proc_macros",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "logging_timer_proc_macros"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "482c2c28e6bcfe7c4274f82f701774d755e6aa873edfd619460fcd0966e0eb07"
|
||||
dependencies = [
|
||||
"log",
|
||||
"proc-macro2 0.4.30",
|
||||
"quote 0.6.13",
|
||||
"syn 0.15.44",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "loom"
|
||||
version = "0.4.0"
|
||||
@ -1269,6 +1291,7 @@ dependencies = [
|
||||
"levenshtein_automata",
|
||||
"linked-hash-map",
|
||||
"log",
|
||||
"logging_timer",
|
||||
"maplit",
|
||||
"meilisearch-tokenizer",
|
||||
"memmap",
|
||||
@ -1288,6 +1311,7 @@ dependencies = [
|
||||
"smallstr",
|
||||
"smallvec",
|
||||
"tempfile",
|
||||
"tinytemplate",
|
||||
"uuid",
|
||||
]
|
||||
|
||||
@ -1553,9 +1577,9 @@ checksum = "99b8db626e31e5b81787b9783425769681b347011cc59471e33ea46d2ea0cf55"
|
||||
dependencies = [
|
||||
"pest 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"pest_meta",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -1631,9 +1655,9 @@ version = "0.4.27"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "65ad2ae56b6abe3a1ee25f15ee605bacadb9a764edaba9c2bf4103800d4a1895"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -1642,9 +1666,9 @@ version = "1.0.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "758669ae3558c6f74bd2a18b41f7ac0b5a195aea6639d6a9b5e5d1ad5ba24c0b"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -1712,9 +1736,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
|
||||
dependencies = [
|
||||
"proc-macro-error-attr",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
"version_check",
|
||||
]
|
||||
|
||||
@ -1724,8 +1748,8 @@ version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"version_check",
|
||||
]
|
||||
|
||||
@ -1741,13 +1765,22 @@ version = "0.1.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "0.4.30"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
|
||||
dependencies = [
|
||||
"unicode-xid 0.1.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.24"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
|
||||
dependencies = [
|
||||
"unicode-xid",
|
||||
"unicode-xid 0.2.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -1756,13 +1789,22 @@ version = "1.2.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "0.6.13"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
|
||||
dependencies = [
|
||||
"proc-macro2 0.4.30",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "1.0.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"proc-macro2 1.0.24",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -2046,9 +2088,9 @@ version = "1.0.123"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9391c295d64fc0abb2c556bad848f33cb8296276b1ad2677d1ae1ace4f258f31"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -2198,9 +2240,20 @@ checksum = "5ba9cdfda491b814720b6b06e0cac513d922fc407582032e8706e9f137976f90"
|
||||
dependencies = [
|
||||
"heck",
|
||||
"proc-macro-error",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "0.15.44"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
|
||||
dependencies = [
|
||||
"proc-macro2 0.4.30",
|
||||
"quote 0.6.13",
|
||||
"unicode-xid 0.1.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -2209,9 +2262,9 @@ version = "1.0.60"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c700597eca8a5a762beb35753ef6b94df201c81cca676604f547495a0d7f0081"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-xid",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"unicode-xid 0.2.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -2229,10 +2282,10 @@ version = "0.12.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"unicode-xid",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
"unicode-xid 0.2.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -2305,9 +2358,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "tinytemplate"
|
||||
version = "1.2.0"
|
||||
version = "1.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a2ada8616fad06a2d0c455adc530de4ef57605a8120cc65da9653e0e9623ca74"
|
||||
checksum = "6d3dc76004a03cec1c5932bca4cdc2e39aaa798e3f82363dd94f9adf6098c12f"
|
||||
dependencies = [
|
||||
"serde",
|
||||
"serde_json",
|
||||
@ -2358,9 +2411,9 @@ version = "0.2.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e44da00bfc73a25f814cd8d7e57a68a5c31b74b3152a0a1d1f590c97ed06265a"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -2521,6 +2574,12 @@ version = "0.1.8"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.1"
|
||||
@ -2652,9 +2711,9 @@ dependencies = [
|
||||
"bumpalo",
|
||||
"lazy_static",
|
||||
"log",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
"wasm-bindgen-shared",
|
||||
]
|
||||
|
||||
@ -2664,7 +2723,7 @@ version = "0.2.70"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3b8853882eef39593ad4174dd26fc9865a64e84026d223f63bb2c42affcbba2c"
|
||||
dependencies = [
|
||||
"quote",
|
||||
"quote 1.0.9",
|
||||
"wasm-bindgen-macro-support",
|
||||
]
|
||||
|
||||
@ -2674,9 +2733,9 @@ version = "0.2.70"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4133b5e7f2a531fa413b3a1695e925038a05a71cf67e87dafa295cb645a01385"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"quote 1.0.9",
|
||||
"syn 1.0.60",
|
||||
"wasm-bindgen-backend",
|
||||
"wasm-bindgen-shared",
|
||||
]
|
||||
@ -2781,8 +2840,8 @@ version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d498dbd1fd7beb83c86709ae1c33ca50942889473473d287d56ce4770a18edfb"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"syn",
|
||||
"proc-macro2 1.0.24",
|
||||
"syn 1.0.60",
|
||||
"synstructure",
|
||||
]
|
||||
|
||||
|
||||
@ -45,6 +45,11 @@ itertools = "0.10.0"
|
||||
|
||||
# logging
|
||||
log = "0.4.14"
|
||||
logging_timer = "1.0.0"
|
||||
|
||||
# We temporarily depend on this crate just to fix this issue
|
||||
# https://github.com/bheisler/TinyTemplate/pull/17
|
||||
tinytemplate = "=1.1.0"
|
||||
|
||||
[dev-dependencies]
|
||||
criterion = "0.3.4"
|
||||
|
||||
@ -15,6 +15,7 @@ use crate::heed_codec::facet::{FieldDocIdFacetI64Codec, FieldDocIdFacetF64Codec}
|
||||
use crate::search::criteria::{resolve_query_tree, CriteriaBuilder};
|
||||
use crate::search::facet::FacetIter;
|
||||
use crate::search::query_tree::Operation;
|
||||
use crate::search::WordDerivationsCache;
|
||||
use crate::{FieldsIdsMap, FieldId, Index};
|
||||
use super::{Criterion, CriterionResult};
|
||||
|
||||
@ -92,7 +93,7 @@ impl<'t> AscDesc<'t> {
|
||||
let candidates = match &query_tree {
|
||||
Some(qt) => {
|
||||
let context = CriteriaBuilder::new(rtxn, index)?;
|
||||
let mut qt_candidates = resolve_query_tree(&context, qt, &mut HashMap::new())?;
|
||||
let mut qt_candidates = resolve_query_tree(&context, qt, &mut HashMap::new(), &mut WordDerivationsCache::new())?;
|
||||
if let Some(candidates) = candidates {
|
||||
qt_candidates.intersect_with(&candidates);
|
||||
}
|
||||
@ -145,7 +146,8 @@ impl<'t> AscDesc<'t> {
|
||||
}
|
||||
|
||||
impl<'t> Criterion for AscDesc<'t> {
|
||||
fn next(&mut self) -> anyhow::Result<Option<CriterionResult>> {
|
||||
#[logging_timer::time("AscDesc::{}")]
|
||||
fn next(&mut self, wdcache: &mut WordDerivationsCache) -> anyhow::Result<Option<CriterionResult>> {
|
||||
loop {
|
||||
debug!("Facet {}({}) iteration",
|
||||
if self.ascending { "Asc" } else { "Desc" }, self.field_name
|
||||
@ -157,7 +159,7 @@ impl<'t> Criterion for AscDesc<'t> {
|
||||
let bucket_candidates = take(&mut self.bucket_candidates);
|
||||
match self.parent.as_mut() {
|
||||
Some(parent) => {
|
||||
match parent.next()? {
|
||||
match parent.next(wdcache)? {
|
||||
Some(CriterionResult { query_tree, mut candidates, bucket_candidates }) => {
|
||||
self.query_tree = query_tree;
|
||||
candidates.intersect_with(&self.faceted_candidates);
|
||||
|
||||
@ -5,6 +5,7 @@ use log::debug;
|
||||
use roaring::RoaringBitmap;
|
||||
|
||||
use crate::search::query_tree::Operation;
|
||||
use crate::search::WordDerivationsCache;
|
||||
use super::{resolve_query_tree, Candidates, Criterion, CriterionResult, Context};
|
||||
|
||||
pub struct Fetcher<'t> {
|
||||
@ -47,7 +48,8 @@ impl<'t> Fetcher<'t> {
|
||||
}
|
||||
|
||||
impl<'t> Criterion for Fetcher<'t> {
|
||||
fn next(&mut self) -> anyhow::Result<Option<CriterionResult>> {
|
||||
#[logging_timer::time("Fetcher::{}")]
|
||||
fn next(&mut self, wdcache: &mut WordDerivationsCache) -> anyhow::Result<Option<CriterionResult>> {
|
||||
use Candidates::{Allowed, Forbidden};
|
||||
loop {
|
||||
debug!("Fetcher iteration (should_get_documents_ids: {}) ({:?})",
|
||||
@ -60,7 +62,7 @@ impl<'t> Criterion for Fetcher<'t> {
|
||||
let candidates = take(&mut self.candidates).into_inner();
|
||||
let candidates = match &self.query_tree {
|
||||
Some(qt) if should_get_documents_ids => {
|
||||
let mut docids = resolve_query_tree(self.ctx, &qt, &mut HashMap::new())?;
|
||||
let mut docids = resolve_query_tree(self.ctx, &qt, &mut HashMap::new(), wdcache)?;
|
||||
docids.intersect_with(&candidates);
|
||||
docids
|
||||
},
|
||||
@ -76,11 +78,11 @@ impl<'t> Criterion for Fetcher<'t> {
|
||||
Forbidden(_) => {
|
||||
match self.parent.as_mut() {
|
||||
Some(parent) => {
|
||||
match parent.next()? {
|
||||
match parent.next(wdcache)? {
|
||||
Some(result) => return Ok(Some(result)),
|
||||
None => if should_get_documents_ids {
|
||||
let candidates = match &self.query_tree {
|
||||
Some(qt) => resolve_query_tree(self.ctx, &qt, &mut HashMap::new())?,
|
||||
Some(qt) => resolve_query_tree(self.ctx, &qt, &mut HashMap::new(), wdcache)?,
|
||||
None => self.ctx.documents_ids()?,
|
||||
};
|
||||
|
||||
@ -94,7 +96,7 @@ impl<'t> Criterion for Fetcher<'t> {
|
||||
},
|
||||
None => if should_get_documents_ids {
|
||||
let candidates = match &self.query_tree {
|
||||
Some(qt) => resolve_query_tree(self.ctx, &qt, &mut HashMap::new())?,
|
||||
Some(qt) => resolve_query_tree(self.ctx, &qt, &mut HashMap::new(), wdcache)?,
|
||||
None => self.ctx.documents_ids()?,
|
||||
};
|
||||
|
||||
|
||||
@ -4,8 +4,8 @@ use std::borrow::Cow;
|
||||
use anyhow::bail;
|
||||
use roaring::RoaringBitmap;
|
||||
|
||||
use crate::search::word_derivations;
|
||||
use crate::Index;
|
||||
use crate::search::{word_derivations, WordDerivationsCache};
|
||||
use crate::{Index, DocumentId};
|
||||
|
||||
use super::query_tree::{Operation, Query, QueryKind};
|
||||
use self::typo::Typo;
|
||||
@ -21,7 +21,7 @@ pub mod proximity;
|
||||
pub mod fetcher;
|
||||
|
||||
pub trait Criterion {
|
||||
fn next(&mut self) -> anyhow::Result<Option<CriterionResult>>;
|
||||
fn next(&mut self, wdcache: &mut WordDerivationsCache) -> anyhow::Result<Option<CriterionResult>>;
|
||||
}
|
||||
|
||||
/// The result of a call to the parent criterion.
|
||||
@ -66,6 +66,7 @@ pub trait Context {
|
||||
fn word_prefix_pair_proximity_docids(&self, left: &str, right: &str, proximity: u8) -> heed::Result<Option<RoaringBitmap>>;
|
||||
fn words_fst<'t>(&self) -> &'t fst::Set<Cow<[u8]>>;
|
||||
fn in_prefix_cache(&self, word: &str) -> bool;
|
||||
fn docid_word_positions(&self, docid: DocumentId, word: &str) -> heed::Result<Option<RoaringBitmap>>;
|
||||
}
|
||||
pub struct CriteriaBuilder<'t> {
|
||||
rtxn: &'t heed::RoTxn<'t>,
|
||||
@ -104,6 +105,11 @@ impl<'a> Context for CriteriaBuilder<'a> {
|
||||
fn in_prefix_cache(&self, word: &str) -> bool {
|
||||
self.words_prefixes_fst.contains(word)
|
||||
}
|
||||
|
||||
fn docid_word_positions(&self, docid: DocumentId, word: &str) -> heed::Result<Option<RoaringBitmap>> {
|
||||
let key = (docid, word);
|
||||
self.index.docid_word_positions.get(self.rtxn, &key)
|
||||
}
|
||||
}
|
||||
|
||||
impl<'t> CriteriaBuilder<'t> {
|
||||
@ -158,12 +164,14 @@ pub fn resolve_query_tree<'t>(
|
||||
ctx: &'t dyn Context,
|
||||
query_tree: &Operation,
|
||||
cache: &mut HashMap<(Operation, u8), RoaringBitmap>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
fn resolve_operation<'t>(
|
||||
ctx: &'t dyn Context,
|
||||
query_tree: &Operation,
|
||||
cache: &mut HashMap<(Operation, u8), RoaringBitmap>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
use Operation::{And, Consecutive, Or, Query};
|
||||
@ -171,7 +179,7 @@ pub fn resolve_query_tree<'t>(
|
||||
match query_tree {
|
||||
And(ops) => {
|
||||
let mut ops = ops.iter().map(|op| {
|
||||
resolve_operation(ctx, op, cache)
|
||||
resolve_operation(ctx, op, cache, wdcache)
|
||||
}).collect::<anyhow::Result<Vec<_>>>()?;
|
||||
|
||||
ops.sort_unstable_by_key(|cds| cds.len());
|
||||
@ -194,7 +202,7 @@ pub fn resolve_query_tree<'t>(
|
||||
for slice in ops.windows(2) {
|
||||
match (&slice[0], &slice[1]) {
|
||||
(Operation::Query(left), Operation::Query(right)) => {
|
||||
match query_pair_proximity_docids(ctx, left, right, 1)? {
|
||||
match query_pair_proximity_docids(ctx, left, right, 1, wdcache)? {
|
||||
pair_docids if pair_docids.is_empty() => {
|
||||
return Ok(RoaringBitmap::new())
|
||||
},
|
||||
@ -215,16 +223,16 @@ pub fn resolve_query_tree<'t>(
|
||||
Or(_, ops) => {
|
||||
let mut candidates = RoaringBitmap::new();
|
||||
for op in ops {
|
||||
let docids = resolve_operation(ctx, op, cache)?;
|
||||
let docids = resolve_operation(ctx, op, cache, wdcache)?;
|
||||
candidates.union_with(&docids);
|
||||
}
|
||||
Ok(candidates)
|
||||
},
|
||||
Query(q) => Ok(query_docids(ctx, q)?),
|
||||
Query(q) => Ok(query_docids(ctx, q, wdcache)?),
|
||||
}
|
||||
}
|
||||
|
||||
resolve_operation(ctx, query_tree, cache)
|
||||
resolve_operation(ctx, query_tree, cache, wdcache)
|
||||
}
|
||||
|
||||
|
||||
@ -233,7 +241,8 @@ fn all_word_pair_proximity_docids<T: AsRef<str>, U: AsRef<str>>(
|
||||
left_words: &[(T, u8)],
|
||||
right_words: &[(U, u8)],
|
||||
proximity: u8
|
||||
) -> anyhow::Result<RoaringBitmap> {
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
let mut docids = RoaringBitmap::new();
|
||||
for (left, _l_typo) in left_words {
|
||||
for (right, _r_typo) in right_words {
|
||||
@ -244,13 +253,18 @@ fn all_word_pair_proximity_docids<T: AsRef<str>, U: AsRef<str>>(
|
||||
Ok(docids)
|
||||
}
|
||||
|
||||
fn query_docids(ctx: &dyn Context, query: &Query) -> anyhow::Result<RoaringBitmap> {
|
||||
fn query_docids(
|
||||
ctx: &dyn Context,
|
||||
query: &Query,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
match &query.kind {
|
||||
QueryKind::Exact { word, .. } => {
|
||||
if query.prefix && ctx.in_prefix_cache(&word) {
|
||||
Ok(ctx.word_prefix_docids(&word)?.unwrap_or_default())
|
||||
} else if query.prefix {
|
||||
let words = word_derivations(&word, true, 0, ctx.words_fst())?;
|
||||
let words = word_derivations(&word, true, 0, ctx.words_fst(), wdcache)?;
|
||||
let mut docids = RoaringBitmap::new();
|
||||
for (word, _typo) in words {
|
||||
let current_docids = ctx.word_docids(&word)?.unwrap_or_default();
|
||||
@ -262,7 +276,7 @@ fn query_docids(ctx: &dyn Context, query: &Query) -> anyhow::Result<RoaringBitma
|
||||
}
|
||||
},
|
||||
QueryKind::Tolerant { typo, word } => {
|
||||
let words = word_derivations(&word, query.prefix, *typo, ctx.words_fst())?;
|
||||
let words = word_derivations(&word, query.prefix, *typo, ctx.words_fst(), wdcache)?;
|
||||
let mut docids = RoaringBitmap::new();
|
||||
for (word, _typo) in words {
|
||||
let current_docids = ctx.word_docids(&word)?.unwrap_or_default();
|
||||
@ -273,10 +287,17 @@ fn query_docids(ctx: &dyn Context, query: &Query) -> anyhow::Result<RoaringBitma
|
||||
}
|
||||
}
|
||||
|
||||
fn query_pair_proximity_docids(ctx: &dyn Context, left: &Query, right: &Query, proximity: u8) -> anyhow::Result<RoaringBitmap> {
|
||||
fn query_pair_proximity_docids(
|
||||
ctx: &dyn Context,
|
||||
left: &Query,
|
||||
right: &Query,
|
||||
proximity: u8,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
if proximity >= 8 {
|
||||
let mut candidates = query_docids(ctx, left)?;
|
||||
let right_candidates = query_docids(ctx, right)?;
|
||||
let mut candidates = query_docids(ctx, left, wdcache)?;
|
||||
let right_candidates = query_docids(ctx, right, wdcache)?;
|
||||
candidates.intersect_with(&right_candidates);
|
||||
return Ok(candidates);
|
||||
}
|
||||
@ -287,14 +308,14 @@ fn query_pair_proximity_docids(ctx: &dyn Context, left: &Query, right: &Query, p
|
||||
if prefix && ctx.in_prefix_cache(&right) {
|
||||
Ok(ctx.word_prefix_pair_proximity_docids(left.as_str(), right.as_str(), proximity)?.unwrap_or_default())
|
||||
} else if prefix {
|
||||
let r_words = word_derivations(&right, true, 0, ctx.words_fst())?;
|
||||
let r_words = word_derivations(&right, true, 0, ctx.words_fst(), wdcache)?;
|
||||
all_word_pair_proximity_docids(ctx, &[(left, 0)], &r_words, proximity)
|
||||
} else {
|
||||
Ok(ctx.word_pair_proximity_docids(left.as_str(), right.as_str(), proximity)?.unwrap_or_default())
|
||||
}
|
||||
},
|
||||
(QueryKind::Tolerant { typo, word: left }, QueryKind::Exact { word: right, .. }) => {
|
||||
let l_words = word_derivations(&left, false, *typo, ctx.words_fst())?;
|
||||
let l_words = word_derivations(&left, false, *typo, ctx.words_fst(), wdcache)?.to_owned();
|
||||
if prefix && ctx.in_prefix_cache(&right) {
|
||||
let mut docids = RoaringBitmap::new();
|
||||
for (left, _) in l_words {
|
||||
@ -303,19 +324,19 @@ fn query_pair_proximity_docids(ctx: &dyn Context, left: &Query, right: &Query, p
|
||||
}
|
||||
Ok(docids)
|
||||
} else if prefix {
|
||||
let r_words = word_derivations(&right, true, 0, ctx.words_fst())?;
|
||||
let r_words = word_derivations(&right, true, 0, ctx.words_fst(), wdcache)?;
|
||||
all_word_pair_proximity_docids(ctx, &l_words, &r_words, proximity)
|
||||
} else {
|
||||
all_word_pair_proximity_docids(ctx, &l_words, &[(right, 0)], proximity)
|
||||
}
|
||||
},
|
||||
(QueryKind::Exact { word: left, .. }, QueryKind::Tolerant { typo, word: right }) => {
|
||||
let r_words = word_derivations(&right, prefix, *typo, ctx.words_fst())?;
|
||||
let r_words = word_derivations(&right, prefix, *typo, ctx.words_fst(), wdcache)?;
|
||||
all_word_pair_proximity_docids(ctx, &[(left, 0)], &r_words, proximity)
|
||||
},
|
||||
(QueryKind::Tolerant { typo: l_typo, word: left }, QueryKind::Tolerant { typo: r_typo, word: right }) => {
|
||||
let l_words = word_derivations(&left, false, *l_typo, ctx.words_fst())?;
|
||||
let r_words = word_derivations(&right, prefix, *r_typo, ctx.words_fst())?;
|
||||
let l_words = word_derivations(&left, false, *l_typo, ctx.words_fst(), wdcache)?.to_owned();
|
||||
let r_words = word_derivations(&right, prefix, *r_typo, ctx.words_fst(), wdcache)?;
|
||||
all_word_pair_proximity_docids(ctx, &l_words, &r_words, proximity)
|
||||
},
|
||||
}
|
||||
@ -368,6 +389,10 @@ pub mod test {
|
||||
fn in_prefix_cache(&self, word: &str) -> bool {
|
||||
self.word_prefix_docids.contains_key(&word.to_string())
|
||||
}
|
||||
|
||||
fn docid_word_positions(&self, _docid: DocumentId, _word: &str) -> heed::Result<Option<RoaringBitmap>> {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> Default for TestContext<'a> {
|
||||
|
||||
@ -1,10 +1,14 @@
|
||||
use std::collections::HashMap;
|
||||
use std::borrow::Cow;
|
||||
use std::collections::btree_map::{self, BTreeMap};
|
||||
use std::collections::hash_map::{HashMap, Entry};
|
||||
use std::mem::take;
|
||||
|
||||
use roaring::RoaringBitmap;
|
||||
use log::debug;
|
||||
|
||||
use crate::{DocumentId, Position, search::{query_tree::QueryKind, word_derivations}};
|
||||
use crate::search::query_tree::{maximum_proximity, Operation, Query};
|
||||
use crate::search::WordDerivationsCache;
|
||||
use super::{Candidates, Criterion, CriterionResult, Context, query_docids, query_pair_proximity_docids};
|
||||
|
||||
pub struct Proximity<'t> {
|
||||
@ -15,6 +19,7 @@ pub struct Proximity<'t> {
|
||||
bucket_candidates: RoaringBitmap,
|
||||
parent: Option<Box<dyn Criterion + 't>>,
|
||||
candidates_cache: HashMap<(Operation, u8), Vec<(Query, Query, RoaringBitmap)>>,
|
||||
plane_sweep_cache: Option<btree_map::IntoIter<u8, RoaringBitmap>>,
|
||||
}
|
||||
|
||||
impl<'t> Proximity<'t> {
|
||||
@ -32,6 +37,7 @@ impl<'t> Proximity<'t> {
|
||||
bucket_candidates: RoaringBitmap::new(),
|
||||
parent: None,
|
||||
candidates_cache: HashMap::new(),
|
||||
plane_sweep_cache: None,
|
||||
}
|
||||
}
|
||||
|
||||
@ -44,12 +50,14 @@ impl<'t> Proximity<'t> {
|
||||
bucket_candidates: RoaringBitmap::new(),
|
||||
parent: Some(parent),
|
||||
candidates_cache: HashMap::new(),
|
||||
plane_sweep_cache: None,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'t> Criterion for Proximity<'t> {
|
||||
fn next(&mut self) -> anyhow::Result<Option<CriterionResult>> {
|
||||
#[logging_timer::time("Proximity::{}")]
|
||||
fn next(&mut self, wdcache: &mut WordDerivationsCache) -> anyhow::Result<Option<CriterionResult>> {
|
||||
use Candidates::{Allowed, Forbidden};
|
||||
loop {
|
||||
debug!("Proximity at iteration {} (max {:?}) ({:?})",
|
||||
@ -68,15 +76,44 @@ impl<'t> Criterion for Proximity<'t> {
|
||||
},
|
||||
(Some((max_prox, query_tree)), Allowed(candidates)) => {
|
||||
if self.proximity as usize > *max_prox {
|
||||
// reset state to (None, Forbidden(_))
|
||||
self.query_tree = None;
|
||||
self.candidates = Candidates::default();
|
||||
} else {
|
||||
let mut new_candidates = resolve_candidates(
|
||||
self.ctx,
|
||||
&query_tree,
|
||||
self.proximity,
|
||||
&mut self.candidates_cache,
|
||||
)?;
|
||||
let mut new_candidates = if candidates.len() <= 1000 {
|
||||
if let Some(cache) = self.plane_sweep_cache.as_mut() {
|
||||
match cache.next() {
|
||||
Some((p, candidates)) => {
|
||||
self.proximity = p;
|
||||
candidates
|
||||
},
|
||||
None => {
|
||||
// reset state to (None, Forbidden(_))
|
||||
self.query_tree = None;
|
||||
self.candidates = Candidates::default();
|
||||
continue
|
||||
},
|
||||
}
|
||||
} else {
|
||||
let cache = resolve_plane_sweep_candidates(
|
||||
self.ctx,
|
||||
query_tree,
|
||||
candidates,
|
||||
wdcache,
|
||||
)?;
|
||||
self.plane_sweep_cache = Some(cache.into_iter());
|
||||
|
||||
continue
|
||||
}
|
||||
} else { // use set theory based algorithm
|
||||
resolve_candidates(
|
||||
self.ctx,
|
||||
&query_tree,
|
||||
self.proximity,
|
||||
&mut self.candidates_cache,
|
||||
wdcache,
|
||||
)?
|
||||
};
|
||||
|
||||
new_candidates.intersect_with(&candidates);
|
||||
candidates.difference_with(&new_candidates);
|
||||
@ -104,6 +141,7 @@ impl<'t> Criterion for Proximity<'t> {
|
||||
&query_tree,
|
||||
self.proximity,
|
||||
&mut self.candidates_cache,
|
||||
wdcache,
|
||||
)?;
|
||||
|
||||
new_candidates.difference_with(&candidates);
|
||||
@ -133,12 +171,13 @@ impl<'t> Criterion for Proximity<'t> {
|
||||
(None, Forbidden(_)) => {
|
||||
match self.parent.as_mut() {
|
||||
Some(parent) => {
|
||||
match parent.next()? {
|
||||
match parent.next(wdcache)? {
|
||||
Some(CriterionResult { query_tree, candidates, bucket_candidates }) => {
|
||||
self.query_tree = query_tree.map(|op| (maximum_proximity(&op), op));
|
||||
self.proximity = 0;
|
||||
self.candidates = Candidates::Allowed(candidates);
|
||||
self.bucket_candidates.union_with(&bucket_candidates);
|
||||
self.plane_sweep_cache = None;
|
||||
},
|
||||
None => return Ok(None),
|
||||
}
|
||||
@ -156,6 +195,7 @@ fn resolve_candidates<'t>(
|
||||
query_tree: &Operation,
|
||||
proximity: u8,
|
||||
cache: &mut HashMap<(Operation, u8), Vec<(Query, Query, RoaringBitmap)>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
fn resolve_operation<'t>(
|
||||
@ -163,27 +203,28 @@ fn resolve_candidates<'t>(
|
||||
query_tree: &Operation,
|
||||
proximity: u8,
|
||||
cache: &mut HashMap<(Operation, u8), Vec<(Query, Query, RoaringBitmap)>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<Vec<(Query, Query, RoaringBitmap)>>
|
||||
{
|
||||
use Operation::{And, Consecutive, Or, Query};
|
||||
|
||||
let result = match query_tree {
|
||||
And(ops) => mdfs(ctx, ops, proximity, cache)?,
|
||||
And(ops) => mdfs(ctx, ops, proximity, cache, wdcache)?,
|
||||
Consecutive(ops) => if proximity == 0 {
|
||||
mdfs(ctx, ops, 0, cache)?
|
||||
mdfs(ctx, ops, 0, cache, wdcache)?
|
||||
} else {
|
||||
Default::default()
|
||||
},
|
||||
Or(_, ops) => {
|
||||
let mut output = Vec::new();
|
||||
for op in ops {
|
||||
let result = resolve_operation(ctx, op, proximity, cache)?;
|
||||
let result = resolve_operation(ctx, op, proximity, cache, wdcache)?;
|
||||
output.extend(result);
|
||||
}
|
||||
output
|
||||
},
|
||||
Query(q) => if proximity == 0 {
|
||||
let candidates = query_docids(ctx, q)?;
|
||||
let candidates = query_docids(ctx, q, wdcache)?;
|
||||
vec![(q.clone(), q.clone(), candidates)]
|
||||
} else {
|
||||
Default::default()
|
||||
@ -199,6 +240,7 @@ fn resolve_candidates<'t>(
|
||||
right: &Operation,
|
||||
proximity: u8,
|
||||
cache: &mut HashMap<(Operation, u8), Vec<(Query, Query, RoaringBitmap)>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<Vec<(Query, Query, RoaringBitmap)>>
|
||||
{
|
||||
fn pair_combinations(mana: u8, left_max: u8) -> impl Iterator<Item = (u8, u8)> {
|
||||
@ -213,13 +255,13 @@ fn resolve_candidates<'t>(
|
||||
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)?;
|
||||
let candidates = resolve_operation(ctx, left, left_p, cache, wdcache)?;
|
||||
cache.insert(left_key.clone(), candidates);
|
||||
}
|
||||
|
||||
let right_key = (right.clone(), right_p);
|
||||
if !cache.contains_key(&right_key) {
|
||||
let candidates = resolve_operation(ctx, right, right_p, cache)?;
|
||||
let candidates = resolve_operation(ctx, right, right_p, cache, wdcache)?;
|
||||
cache.insert(right_key.clone(), candidates);
|
||||
}
|
||||
|
||||
@ -228,7 +270,7 @@ fn resolve_candidates<'t>(
|
||||
|
||||
for (ll, lr, lcandidates) in lefts {
|
||||
for (rl, rr, rcandidates) in rights {
|
||||
let mut candidates = query_pair_proximity_docids(ctx, lr, rl, pair_p + 1)?;
|
||||
let mut candidates = query_pair_proximity_docids(ctx, lr, rl, pair_p + 1, wdcache)?;
|
||||
if lcandidates.len() < rcandidates.len() {
|
||||
candidates.intersect_with(lcandidates);
|
||||
candidates.intersect_with(rcandidates);
|
||||
@ -252,6 +294,7 @@ fn resolve_candidates<'t>(
|
||||
branches: &[Operation],
|
||||
proximity: u8,
|
||||
cache: &mut HashMap<(Operation, u8), Vec<(Query, Query, RoaringBitmap)>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<Vec<(Query, Query, RoaringBitmap)>>
|
||||
{
|
||||
// Extract the first two elements but gives the tail
|
||||
@ -261,13 +304,13 @@ fn resolve_candidates<'t>(
|
||||
});
|
||||
|
||||
match next {
|
||||
Some((head1, Some((head2, [_])))) => mdfs_pair(ctx, head1, head2, proximity, cache),
|
||||
Some((head1, Some((head2, [_])))) => mdfs_pair(ctx, head1, head2, proximity, cache, wdcache),
|
||||
Some((head1, Some((head2, tail)))) => {
|
||||
let mut output = Vec::new();
|
||||
for p in 0..=proximity {
|
||||
for (lhead, _, head_candidates) in mdfs_pair(ctx, head1, head2, p, cache)? {
|
||||
for (lhead, _, head_candidates) in mdfs_pair(ctx, head1, head2, p, cache, wdcache)? {
|
||||
if !head_candidates.is_empty() {
|
||||
for (_, rtail, mut candidates) in mdfs(ctx, tail, proximity - p, cache)? {
|
||||
for (_, rtail, mut candidates) in mdfs(ctx, tail, proximity - p, cache, wdcache)? {
|
||||
candidates.intersect_with(&head_candidates);
|
||||
if !candidates.is_empty() {
|
||||
output.push((lhead.clone(), rtail, candidates));
|
||||
@ -278,14 +321,230 @@ fn resolve_candidates<'t>(
|
||||
}
|
||||
Ok(output)
|
||||
},
|
||||
Some((head1, None)) => resolve_operation(ctx, head1, proximity, cache),
|
||||
Some((head1, None)) => resolve_operation(ctx, head1, proximity, cache, wdcache),
|
||||
None => return Ok(Default::default()),
|
||||
}
|
||||
}
|
||||
|
||||
let mut candidates = RoaringBitmap::new();
|
||||
for (_, _, cds) in resolve_operation(ctx, query_tree, proximity, cache)? {
|
||||
for (_, _, cds) in resolve_operation(ctx, query_tree, proximity, cache, wdcache)? {
|
||||
candidates.union_with(&cds);
|
||||
}
|
||||
Ok(candidates)
|
||||
}
|
||||
|
||||
fn resolve_plane_sweep_candidates(
|
||||
ctx: &dyn Context,
|
||||
query_tree: &Operation,
|
||||
allowed_candidates: &RoaringBitmap,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<BTreeMap<u8, RoaringBitmap>>
|
||||
{
|
||||
/// FIXME may be buggy with query like "new new york"
|
||||
fn plane_sweep<'a>(
|
||||
ctx: &dyn Context,
|
||||
operations: &'a [Operation],
|
||||
docid: DocumentId,
|
||||
consecutive: bool,
|
||||
rocache: &mut HashMap<&'a Operation, Vec<(Position, u8, Position)>>,
|
||||
dwpcache: &mut HashMap<String, Option<RoaringBitmap>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<Vec<(Position, u8, Position)>>
|
||||
{
|
||||
fn compute_groups_proximity(
|
||||
groups: &[(usize, (Position, u8, Position))],
|
||||
consecutive: bool,
|
||||
) -> Option<(Position, u8, Position)>
|
||||
{
|
||||
// take the inner proximity of the first group as initial
|
||||
let (_, (_, mut proximity, _)) = groups.first()?;
|
||||
let (_, (left_most_pos, _, _)) = groups.first()?;
|
||||
let (_, (_, _, right_most_pos)) = groups.last()?;
|
||||
|
||||
for pair in groups.windows(2) {
|
||||
if let [(i1, (_, _, rpos1)), (i2, (lpos2, prox2, _))] = pair {
|
||||
// if a pair overlap, meaning that they share at least a word, we return None
|
||||
if rpos1 >= lpos2 { return None }
|
||||
// if groups are in the good order (query order) we remove 1 to the proximity
|
||||
// the proximity is clamped to 7
|
||||
let pair_proximity = if i1 < i2 {
|
||||
(*lpos2 - *rpos1 - 1).min(7)
|
||||
} else {
|
||||
(*lpos2 - *rpos1).min(7)
|
||||
};
|
||||
|
||||
proximity += pair_proximity as u8 + prox2;
|
||||
}
|
||||
}
|
||||
|
||||
// if groups should be consecutives, we will only accept groups with a proximity of 0
|
||||
if !consecutive || proximity == 0 {
|
||||
Some((*left_most_pos, proximity, *right_most_pos))
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
let groups_len = operations.len();
|
||||
let mut groups_positions = Vec::with_capacity(groups_len);
|
||||
|
||||
for operation in operations {
|
||||
let positions = resolve_operation(ctx, operation, docid, rocache, dwpcache, wdcache)?;
|
||||
groups_positions.push(positions.into_iter());
|
||||
}
|
||||
|
||||
// Pop top elements of each list.
|
||||
let mut current = Vec::with_capacity(groups_len);
|
||||
for (i, positions) in groups_positions.iter_mut().enumerate() {
|
||||
match positions.next() {
|
||||
Some(p) => current.push((i, p)),
|
||||
// if a group return None, it means that the document does not contain all the words,
|
||||
// we return an empty result.
|
||||
None => return Ok(Vec::new()),
|
||||
}
|
||||
}
|
||||
|
||||
// Sort k elements by their positions.
|
||||
current.sort_unstable_by_key(|(_, p)| *p);
|
||||
|
||||
// Find leftmost and rightmost group and their positions.
|
||||
let mut leftmost = *current.first().unwrap();
|
||||
let mut rightmost = *current.last().unwrap();
|
||||
|
||||
let mut output = Vec::new();
|
||||
loop {
|
||||
// Find the position p of the next elements of a list of the leftmost group.
|
||||
// If the list is empty, break the loop.
|
||||
let p = groups_positions[leftmost.0].next().map(|p| (leftmost.0, p));
|
||||
|
||||
// let q be the position q of second group of the interval.
|
||||
let q = current[1];
|
||||
|
||||
let mut leftmost_index = 0;
|
||||
|
||||
// If p > r, then the interval [l, r] is minimal and
|
||||
// we insert it into the heap according to its size.
|
||||
if p.map_or(true, |p| p.1 > rightmost.1) {
|
||||
leftmost_index = current[0].0;
|
||||
if let Some(group) = compute_groups_proximity(¤t, consecutive) {
|
||||
output.push(group);
|
||||
}
|
||||
}
|
||||
|
||||
// TODO not sure about breaking here or when the p list is found empty.
|
||||
let p = match p {
|
||||
Some(p) => p,
|
||||
None => break,
|
||||
};
|
||||
|
||||
// Remove the leftmost group P in the interval,
|
||||
// and pop the same group from a list.
|
||||
current[leftmost_index] = p;
|
||||
|
||||
if p.1 > rightmost.1 {
|
||||
// if [l, r] is minimal, let r = p and l = q.
|
||||
rightmost = p;
|
||||
leftmost = q;
|
||||
} else {
|
||||
// Ohterwise, let l = min{p,q}.
|
||||
leftmost = if p.1 < q.1 { p } else { q };
|
||||
}
|
||||
|
||||
// Then update the interval and order of groups_positions in the interval.
|
||||
current.sort_unstable_by_key(|(_, p)| *p);
|
||||
}
|
||||
|
||||
// Sort the list according to the size and the positions.
|
||||
output.sort_unstable();
|
||||
|
||||
Ok(output)
|
||||
}
|
||||
|
||||
fn resolve_operation<'a>(
|
||||
ctx: &dyn Context,
|
||||
query_tree: &'a Operation,
|
||||
docid: DocumentId,
|
||||
rocache: &mut HashMap<&'a Operation, Vec<(Position, u8, Position)>>,
|
||||
dwpcache: &mut HashMap<String, Option<RoaringBitmap>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<Vec<(Position, u8, Position)>>
|
||||
{
|
||||
use Operation::{And, Consecutive, Or};
|
||||
|
||||
if let Some(result) = rocache.get(query_tree) {
|
||||
return Ok(result.clone());
|
||||
}
|
||||
|
||||
let result = match query_tree {
|
||||
And(ops) => plane_sweep(ctx, ops, docid, false, rocache, dwpcache, wdcache)?,
|
||||
Consecutive(ops) => plane_sweep(ctx, ops, docid, true, rocache, dwpcache, wdcache)?,
|
||||
Or(_, ops) => {
|
||||
let mut result = Vec::new();
|
||||
for op in ops {
|
||||
result.extend(resolve_operation(ctx, op, docid, rocache, dwpcache, wdcache)?)
|
||||
}
|
||||
|
||||
result.sort_unstable();
|
||||
result
|
||||
},
|
||||
Operation::Query(Query {prefix, kind}) => {
|
||||
let fst = ctx.words_fst();
|
||||
let words = match kind {
|
||||
QueryKind::Exact { word, .. } => {
|
||||
if *prefix {
|
||||
Cow::Borrowed(word_derivations(word, true, 0, fst, wdcache)?)
|
||||
} else {
|
||||
Cow::Owned(vec![(word.to_string(), 0)])
|
||||
}
|
||||
},
|
||||
QueryKind::Tolerant { typo, word } => {
|
||||
Cow::Borrowed(word_derivations(word, *prefix, *typo, fst, wdcache)?)
|
||||
}
|
||||
};
|
||||
|
||||
let mut result = Vec::new();
|
||||
for (word, _) in words.as_ref() {
|
||||
let positions = match dwpcache.entry(word.to_string()) {
|
||||
Entry::Occupied(entry) => entry.into_mut(),
|
||||
Entry::Vacant(entry) => {
|
||||
let positions = ctx.docid_word_positions(docid, word)?;
|
||||
entry.insert(positions)
|
||||
}
|
||||
};
|
||||
|
||||
if let Some(positions) = positions {
|
||||
let iter = positions.iter().map(|p| (p, 0, p));
|
||||
result.extend(iter);
|
||||
}
|
||||
}
|
||||
|
||||
result.sort_unstable();
|
||||
result
|
||||
}
|
||||
};
|
||||
|
||||
rocache.insert(query_tree, result.clone());
|
||||
Ok(result)
|
||||
}
|
||||
|
||||
let mut word_positions_cache = HashMap::new();
|
||||
let mut resolve_operation_cache = HashMap::new();
|
||||
let mut candidates = BTreeMap::new();
|
||||
for docid in allowed_candidates {
|
||||
word_positions_cache.clear();
|
||||
resolve_operation_cache.clear();
|
||||
let positions = resolve_operation(
|
||||
ctx,
|
||||
query_tree,
|
||||
docid,
|
||||
&mut resolve_operation_cache,
|
||||
&mut word_positions_cache,
|
||||
wdcache,
|
||||
)?;
|
||||
let best_proximity = positions.into_iter().min_by_key(|(_, proximity, _)| *proximity);
|
||||
let best_proximity = best_proximity.map(|(_, proximity, _)| proximity).unwrap_or(7);
|
||||
candidates.entry(best_proximity).or_insert_with(RoaringBitmap::new).insert(docid);
|
||||
}
|
||||
|
||||
Ok(candidates)
|
||||
}
|
||||
|
||||
@ -5,7 +5,7 @@ use log::debug;
|
||||
use roaring::RoaringBitmap;
|
||||
|
||||
use crate::search::query_tree::{maximum_typo, Operation, Query, QueryKind};
|
||||
use crate::search::word_derivations;
|
||||
use crate::search::{word_derivations, WordDerivationsCache};
|
||||
use super::{Candidates, Criterion, CriterionResult, Context, query_docids, query_pair_proximity_docids};
|
||||
|
||||
pub struct Typo<'t> {
|
||||
@ -53,7 +53,8 @@ impl<'t> Typo<'t> {
|
||||
}
|
||||
|
||||
impl<'t> Criterion for Typo<'t> {
|
||||
fn next(&mut self) -> anyhow::Result<Option<CriterionResult>> {
|
||||
#[logging_timer::time("Typo::{}")]
|
||||
fn next(&mut self, wdcache: &mut WordDerivationsCache) -> anyhow::Result<Option<CriterionResult>> {
|
||||
use Candidates::{Allowed, Forbidden};
|
||||
loop {
|
||||
debug!("Typo at iteration {} ({:?})", self.number_typos, self.candidates);
|
||||
@ -73,15 +74,21 @@ impl<'t> Criterion for Typo<'t> {
|
||||
} else {
|
||||
let fst = self.ctx.words_fst();
|
||||
let new_query_tree = if self.number_typos < 2 {
|
||||
alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache)?
|
||||
alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache, wdcache)?
|
||||
} else if self.number_typos == 2 {
|
||||
*query_tree = alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache)?;
|
||||
*query_tree = alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache, wdcache)?;
|
||||
query_tree.clone()
|
||||
} else {
|
||||
query_tree.clone()
|
||||
};
|
||||
|
||||
let mut new_candidates = resolve_candidates(self.ctx, &new_query_tree, self.number_typos, &mut self.candidates_cache)?;
|
||||
let mut new_candidates = resolve_candidates(
|
||||
self.ctx,
|
||||
&new_query_tree,
|
||||
self.number_typos,
|
||||
&mut self.candidates_cache,
|
||||
wdcache,
|
||||
)?;
|
||||
new_candidates.intersect_with(&candidates);
|
||||
candidates.difference_with(&new_candidates);
|
||||
self.number_typos += 1;
|
||||
@ -105,15 +112,21 @@ impl<'t> Criterion for Typo<'t> {
|
||||
} else {
|
||||
let fst = self.ctx.words_fst();
|
||||
let new_query_tree = if self.number_typos < 2 {
|
||||
alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache)?
|
||||
alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache, wdcache)?
|
||||
} else if self.number_typos == 2 {
|
||||
*query_tree = alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache)?;
|
||||
*query_tree = alterate_query_tree(&fst, query_tree.clone(), self.number_typos, &mut self.typo_cache, wdcache)?;
|
||||
query_tree.clone()
|
||||
} else {
|
||||
query_tree.clone()
|
||||
};
|
||||
|
||||
let mut new_candidates = resolve_candidates(self.ctx, &new_query_tree, self.number_typos, &mut self.candidates_cache)?;
|
||||
let mut new_candidates = resolve_candidates(
|
||||
self.ctx,
|
||||
&new_query_tree,
|
||||
self.number_typos,
|
||||
&mut self.candidates_cache,
|
||||
wdcache,
|
||||
)?;
|
||||
new_candidates.difference_with(&candidates);
|
||||
candidates.union_with(&new_candidates);
|
||||
self.number_typos += 1;
|
||||
@ -141,7 +154,7 @@ impl<'t> Criterion for Typo<'t> {
|
||||
(None, Forbidden(_)) => {
|
||||
match self.parent.as_mut() {
|
||||
Some(parent) => {
|
||||
match parent.next()? {
|
||||
match parent.next(wdcache)? {
|
||||
Some(CriterionResult { query_tree, candidates, bucket_candidates }) => {
|
||||
self.query_tree = query_tree.map(|op| (maximum_typo(&op), op));
|
||||
self.number_typos = 0;
|
||||
@ -167,6 +180,7 @@ fn alterate_query_tree(
|
||||
mut query_tree: Operation,
|
||||
number_typos: u8,
|
||||
typo_cache: &mut HashMap<(String, bool, u8), Vec<(String, u8)>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<Operation>
|
||||
{
|
||||
fn recurse(
|
||||
@ -174,13 +188,14 @@ fn alterate_query_tree(
|
||||
operation: &mut Operation,
|
||||
number_typos: u8,
|
||||
typo_cache: &mut HashMap<(String, bool, u8), Vec<(String, u8)>>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<()>
|
||||
{
|
||||
use Operation::{And, Consecutive, Or};
|
||||
|
||||
match operation {
|
||||
And(ops) | Consecutive(ops) | Or(_, ops) => {
|
||||
ops.iter_mut().try_for_each(|op| recurse(words_fst, op, number_typos, typo_cache))
|
||||
ops.iter_mut().try_for_each(|op| recurse(words_fst, op, number_typos, typo_cache, wdcache))
|
||||
},
|
||||
Operation::Query(q) => {
|
||||
// TODO may be optimized when number_typos == 0
|
||||
@ -198,7 +213,7 @@ fn alterate_query_tree(
|
||||
let words = if let Some(derivations) = typo_cache.get(&cache_key) {
|
||||
derivations.clone()
|
||||
} else {
|
||||
let derivations = word_derivations(word, q.prefix, typo, words_fst)?;
|
||||
let derivations = word_derivations(word, q.prefix, typo, words_fst, wdcache)?.to_vec();
|
||||
typo_cache.insert(cache_key, derivations.clone());
|
||||
derivations
|
||||
};
|
||||
@ -219,7 +234,7 @@ fn alterate_query_tree(
|
||||
}
|
||||
}
|
||||
|
||||
recurse(words_fst, &mut query_tree, number_typos, typo_cache)?;
|
||||
recurse(words_fst, &mut query_tree, number_typos, typo_cache, wdcache)?;
|
||||
Ok(query_tree)
|
||||
}
|
||||
|
||||
@ -228,6 +243,7 @@ fn resolve_candidates<'t>(
|
||||
query_tree: &Operation,
|
||||
number_typos: u8,
|
||||
cache: &mut HashMap<(Operation, u8), RoaringBitmap>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
fn resolve_operation<'t>(
|
||||
@ -235,13 +251,14 @@ fn resolve_candidates<'t>(
|
||||
query_tree: &Operation,
|
||||
number_typos: u8,
|
||||
cache: &mut HashMap<(Operation, u8), RoaringBitmap>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
use Operation::{And, Consecutive, Or, Query};
|
||||
|
||||
match query_tree {
|
||||
And(ops) => {
|
||||
mdfs(ctx, ops, number_typos, cache)
|
||||
mdfs(ctx, ops, number_typos, cache, wdcache)
|
||||
},
|
||||
Consecutive(ops) => {
|
||||
let mut candidates = RoaringBitmap::new();
|
||||
@ -249,7 +266,7 @@ fn resolve_candidates<'t>(
|
||||
for slice in ops.windows(2) {
|
||||
match (&slice[0], &slice[1]) {
|
||||
(Operation::Query(left), Operation::Query(right)) => {
|
||||
match query_pair_proximity_docids(ctx, left, right, 1)? {
|
||||
match query_pair_proximity_docids(ctx, left, right, 1, wdcache)? {
|
||||
pair_docids if pair_docids.is_empty() => {
|
||||
return Ok(RoaringBitmap::new())
|
||||
},
|
||||
@ -270,13 +287,13 @@ fn resolve_candidates<'t>(
|
||||
Or(_, ops) => {
|
||||
let mut candidates = RoaringBitmap::new();
|
||||
for op in ops {
|
||||
let docids = resolve_operation(ctx, op, number_typos, cache)?;
|
||||
let docids = resolve_operation(ctx, op, number_typos, cache, wdcache)?;
|
||||
candidates.union_with(&docids);
|
||||
}
|
||||
Ok(candidates)
|
||||
},
|
||||
Query(q) => if q.kind.typo() == number_typos {
|
||||
Ok(query_docids(ctx, q)?)
|
||||
Ok(query_docids(ctx, q, wdcache)?)
|
||||
} else {
|
||||
Ok(RoaringBitmap::new())
|
||||
},
|
||||
@ -288,6 +305,7 @@ fn resolve_candidates<'t>(
|
||||
branches: &[Operation],
|
||||
mana: u8,
|
||||
cache: &mut HashMap<(Operation, u8), RoaringBitmap>,
|
||||
wdcache: &mut WordDerivationsCache,
|
||||
) -> anyhow::Result<RoaringBitmap>
|
||||
{
|
||||
match branches.split_first() {
|
||||
@ -296,7 +314,7 @@ fn resolve_candidates<'t>(
|
||||
if let Some(candidates) = cache.get(&cache_key) {
|
||||
Ok(candidates.clone())
|
||||
} else {
|
||||
let candidates = resolve_operation(ctx, head, mana, cache)?;
|
||||
let candidates = resolve_operation(ctx, head, mana, cache, wdcache)?;
|
||||
cache.insert(cache_key, candidates.clone());
|
||||
Ok(candidates)
|
||||
}
|
||||
@ -310,13 +328,13 @@ fn resolve_candidates<'t>(
|
||||
if let Some(candidates) = cache.get(&cache_key) {
|
||||
candidates.clone()
|
||||
} else {
|
||||
let candidates = resolve_operation(ctx, head, m, cache)?;
|
||||
let candidates = resolve_operation(ctx, head, m, cache, wdcache)?;
|
||||
cache.insert(cache_key, candidates.clone());
|
||||
candidates
|
||||
}
|
||||
};
|
||||
if !head_candidates.is_empty() {
|
||||
let tail_candidates = mdfs(ctx, tail, mana - m, cache)?;
|
||||
let tail_candidates = mdfs(ctx, tail, mana - m, cache, wdcache)?;
|
||||
head_candidates.intersect_with(&tail_candidates);
|
||||
candidates.union_with(&head_candidates);
|
||||
}
|
||||
@ -328,7 +346,7 @@ fn resolve_candidates<'t>(
|
||||
}
|
||||
}
|
||||
|
||||
resolve_operation(ctx, query_tree, number_typos, cache)
|
||||
resolve_operation(ctx, query_tree, number_typos, cache, wdcache)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
@ -343,9 +361,10 @@ mod test {
|
||||
let query_tree = None;
|
||||
let facet_candidates = None;
|
||||
|
||||
let mut wdcache = WordDerivationsCache::new();
|
||||
let mut criteria = Typo::initial(&context, query_tree, facet_candidates);
|
||||
|
||||
assert!(criteria.next().unwrap().is_none());
|
||||
assert!(criteria.next(&mut wdcache).unwrap().is_none());
|
||||
}
|
||||
|
||||
#[test]
|
||||
@ -361,6 +380,7 @@ mod test {
|
||||
|
||||
let facet_candidates = None;
|
||||
|
||||
let mut wdcache = WordDerivationsCache::new();
|
||||
let mut criteria = Typo::initial(&context, Some(query_tree), facet_candidates);
|
||||
|
||||
let candidates_1 = context.word_docids("split").unwrap().unwrap()
|
||||
@ -378,7 +398,7 @@ mod test {
|
||||
bucket_candidates: candidates_1,
|
||||
};
|
||||
|
||||
assert_eq!(criteria.next().unwrap(), Some(expected_1));
|
||||
assert_eq!(criteria.next(&mut wdcache).unwrap(), Some(expected_1));
|
||||
|
||||
let candidates_2 = (
|
||||
context.word_docids("split").unwrap().unwrap()
|
||||
@ -400,7 +420,7 @@ mod test {
|
||||
bucket_candidates: candidates_2,
|
||||
};
|
||||
|
||||
assert_eq!(criteria.next().unwrap(), Some(expected_2));
|
||||
assert_eq!(criteria.next(&mut wdcache).unwrap(), Some(expected_2));
|
||||
}
|
||||
|
||||
#[test]
|
||||
@ -409,6 +429,7 @@ mod test {
|
||||
let query_tree = None;
|
||||
let facet_candidates = context.word_docids("earth").unwrap().unwrap();
|
||||
|
||||
let mut wdcache = WordDerivationsCache::new();
|
||||
let mut criteria = Typo::initial(&context, query_tree, Some(facet_candidates.clone()));
|
||||
|
||||
let expected = CriterionResult {
|
||||
@ -418,10 +439,10 @@ mod test {
|
||||
};
|
||||
|
||||
// first iteration, returns the facet candidates
|
||||
assert_eq!(criteria.next().unwrap(), Some(expected));
|
||||
assert_eq!(criteria.next(&mut wdcache).unwrap(), Some(expected));
|
||||
|
||||
// second iteration, returns None because there is no more things to do
|
||||
assert!(criteria.next().unwrap().is_none());
|
||||
assert!(criteria.next(&mut wdcache).unwrap().is_none());
|
||||
}
|
||||
|
||||
#[test]
|
||||
@ -437,6 +458,7 @@ mod test {
|
||||
|
||||
let facet_candidates = context.word_docids("earth").unwrap().unwrap();
|
||||
|
||||
let mut wdcache = WordDerivationsCache::new();
|
||||
let mut criteria = Typo::initial(&context, Some(query_tree), Some(facet_candidates.clone()));
|
||||
|
||||
let candidates_1 = context.word_docids("split").unwrap().unwrap()
|
||||
@ -454,7 +476,7 @@ mod test {
|
||||
bucket_candidates: candidates_1 & &facet_candidates,
|
||||
};
|
||||
|
||||
assert_eq!(criteria.next().unwrap(), Some(expected_1));
|
||||
assert_eq!(criteria.next(&mut wdcache).unwrap(), Some(expected_1));
|
||||
|
||||
let candidates_2 = (
|
||||
context.word_docids("split").unwrap().unwrap()
|
||||
@ -476,7 +498,7 @@ mod test {
|
||||
bucket_candidates: candidates_2 & &facet_candidates,
|
||||
};
|
||||
|
||||
assert_eq!(criteria.next().unwrap(), Some(expected_2));
|
||||
assert_eq!(criteria.next(&mut wdcache).unwrap(), Some(expected_2));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -5,6 +5,7 @@ use log::debug;
|
||||
use roaring::RoaringBitmap;
|
||||
|
||||
use crate::search::query_tree::Operation;
|
||||
use crate::search::WordDerivationsCache;
|
||||
use super::{resolve_query_tree, Candidates, Criterion, CriterionResult, Context};
|
||||
|
||||
pub struct Words<'t> {
|
||||
@ -46,7 +47,8 @@ impl<'t> Words<'t> {
|
||||
}
|
||||
|
||||
impl<'t> Criterion for Words<'t> {
|
||||
fn next(&mut self) -> anyhow::Result<Option<CriterionResult>> {
|
||||
#[logging_timer::time("Words::{}")]
|
||||
fn next(&mut self, wdcache: &mut WordDerivationsCache) -> anyhow::Result<Option<CriterionResult>> {
|
||||
use Candidates::{Allowed, Forbidden};
|
||||
loop {
|
||||
debug!("Words at iteration {} ({:?})", self.query_trees.len(), self.candidates);
|
||||
@ -61,7 +63,7 @@ impl<'t> Criterion for Words<'t> {
|
||||
}));
|
||||
},
|
||||
(Some(qt), Allowed(candidates)) => {
|
||||
let mut found_candidates = resolve_query_tree(self.ctx, &qt, &mut self.candidates_cache)?;
|
||||
let mut found_candidates = resolve_query_tree(self.ctx, &qt, &mut self.candidates_cache, wdcache)?;
|
||||
found_candidates.intersect_with(&candidates);
|
||||
candidates.difference_with(&found_candidates);
|
||||
|
||||
@ -77,7 +79,7 @@ impl<'t> Criterion for Words<'t> {
|
||||
}));
|
||||
},
|
||||
(Some(qt), Forbidden(candidates)) => {
|
||||
let mut found_candidates = resolve_query_tree(self.ctx, &qt, &mut self.candidates_cache)?;
|
||||
let mut found_candidates = resolve_query_tree(self.ctx, &qt, &mut self.candidates_cache, wdcache)?;
|
||||
found_candidates.difference_with(&candidates);
|
||||
candidates.union_with(&found_candidates);
|
||||
|
||||
@ -103,7 +105,7 @@ impl<'t> Criterion for Words<'t> {
|
||||
(None, Forbidden(_)) => {
|
||||
match self.parent.as_mut() {
|
||||
Some(parent) => {
|
||||
match parent.next()? {
|
||||
match parent.next(wdcache)? {
|
||||
Some(CriterionResult { query_tree, candidates, bucket_candidates }) => {
|
||||
self.query_trees = query_tree.map(explode_query_tree).unwrap_or_default();
|
||||
self.candidates = Candidates::Allowed(candidates);
|
||||
|
||||
@ -1,5 +1,7 @@
|
||||
use std::borrow::Cow;
|
||||
use std::collections::hash_map::{HashMap, Entry};
|
||||
use std::fmt;
|
||||
use std::str::Utf8Error;
|
||||
use std::time::Instant;
|
||||
|
||||
use fst::{IntoStreamer, Streamer, Set};
|
||||
@ -97,8 +99,9 @@ impl<'a> Search<'a> {
|
||||
let mut offset = self.offset;
|
||||
let mut limit = self.limit;
|
||||
let mut documents_ids = Vec::new();
|
||||
let mut words_derivations_cache = WordDerivationsCache::new();
|
||||
let mut initial_candidates = RoaringBitmap::new();
|
||||
while let Some(CriterionResult { candidates, bucket_candidates, .. }) = criteria.next()? {
|
||||
while let Some(CriterionResult { candidates, bucket_candidates, .. }) = criteria.next(&mut words_derivations_cache)? {
|
||||
|
||||
debug!("Number of candidates found {}", candidates.len());
|
||||
|
||||
@ -145,24 +148,32 @@ pub struct SearchResult {
|
||||
pub documents_ids: Vec<DocumentId>,
|
||||
}
|
||||
|
||||
pub fn word_derivations(
|
||||
pub type WordDerivationsCache = HashMap<(String, bool, u8), Vec<(String, u8)>>;
|
||||
|
||||
pub fn word_derivations<'c>(
|
||||
word: &str,
|
||||
is_prefix: bool,
|
||||
max_typo: u8,
|
||||
fst: &fst::Set<Cow<[u8]>>,
|
||||
) -> anyhow::Result<Vec<(String, u8)>>
|
||||
cache: &'c mut WordDerivationsCache,
|
||||
) -> Result<&'c [(String, u8)], Utf8Error>
|
||||
{
|
||||
let mut derived_words = Vec::new();
|
||||
let dfa = build_dfa(word, max_typo, is_prefix);
|
||||
let mut stream = fst.search_with_state(&dfa).into_stream();
|
||||
match cache.entry((word.to_string(), is_prefix, max_typo)) {
|
||||
Entry::Occupied(entry) => Ok(entry.into_mut()),
|
||||
Entry::Vacant(entry) => {
|
||||
let mut derived_words = Vec::new();
|
||||
let dfa = build_dfa(word, max_typo, is_prefix);
|
||||
let mut stream = fst.search_with_state(&dfa).into_stream();
|
||||
|
||||
while let Some((word, state)) = stream.next() {
|
||||
let word = std::str::from_utf8(word)?;
|
||||
let distance = dfa.distance(state);
|
||||
derived_words.push((word.to_string(), distance.to_u8()));
|
||||
while let Some((word, state)) = stream.next() {
|
||||
let word = std::str::from_utf8(word)?;
|
||||
let distance = dfa.distance(state);
|
||||
derived_words.push((word.to_string(), distance.to_u8()));
|
||||
}
|
||||
|
||||
Ok(entry.insert(derived_words))
|
||||
},
|
||||
}
|
||||
|
||||
Ok(derived_words)
|
||||
}
|
||||
|
||||
pub fn build_dfa(word: &str, typos: u8, is_prefix: bool) -> DFA {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user