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simplify criterion context

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many 2021-02-17 18:16:21 +01:00 committed by Kerollmops
parent fea9ffc46a
commit 9ccaea2afc
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GPG Key ID: 92ADA4E935E71FA4
2 changed files with 106 additions and 89 deletions
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189
milli/src/search/criteria/mod.rs
View File

@ -46,9 +46,12 @@ impl Default for Candidates {
}
}
pub trait Context {
fn query_docids(&self, query: &Query) -> anyhow::Result<RoaringBitmap>;
fn query_pair_proximity_docids(&self, left: &Query, right: &Query, proximity: u8) ->anyhow::Result<RoaringBitmap>;
fn word_docids(&self, word: &str) -> heed::Result<Option<RoaringBitmap>>;
fn word_prefix_docids(&self, word: &str) -> heed::Result<Option<RoaringBitmap>>;
fn word_pair_proximity_docids(&self, left: &str, right: &str, proximity: u8) -> heed::Result<Option<RoaringBitmap>>;
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;
}
pub struct HeedContext<'t> {
rtxn: &'t heed::RoTxn<'t>,
@ -58,83 +61,31 @@ pub struct HeedContext<'t> {
}
impl<'a> Context for HeedContext<'a> {
fn query_docids(&self, query: &Query) -> anyhow::Result<RoaringBitmap> {
match &query.kind {
QueryKind::Exact { word, .. } => {
if query.prefix && self.in_prefix_cache(&word) {
Ok(self.index.word_prefix_docids.get(self.rtxn, &word)?.unwrap_or_default())
} else if query.prefix {
let words = word_typos(&word, true, 0, &self.words_fst)?;
let mut docids = RoaringBitmap::new();
for (word, _typo) in words {
let current_docids = self.index.word_docids.get(self.rtxn, &word)?.unwrap_or_default();
docids.union_with(&current_docids);
}
Ok(docids)
} else {
Ok(self.index.word_docids.get(self.rtxn, &word)?.unwrap_or_default())
}
},
QueryKind::Tolerant { typo, word } => {
let words = word_typos(&word, query.prefix, *typo, &self.words_fst)?;
let mut docids = RoaringBitmap::new();
for (word, _typo) in words {
let current_docids = self.index.word_docids.get(self.rtxn, &word)?.unwrap_or_default();
docids.union_with(&current_docids);
}
Ok(docids)
},
}
fn word_docids(&self, word: &str) -> heed::Result<Option<RoaringBitmap>> {
self.index.word_docids.get(self.rtxn, &word)
}
fn query_pair_proximity_docids(&self, left: &Query, right: &Query, proximity: u8) -> anyhow::Result<RoaringBitmap> {
let prefix = right.prefix;
fn word_prefix_docids(&self, word: &str) -> heed::Result<Option<RoaringBitmap>> {
self.index.word_prefix_docids.get(self.rtxn, &word)
}
match (&left.kind, &right.kind) {
(QueryKind::Exact { word: left, .. }, QueryKind::Exact { word: right, .. }) => {
if prefix && self.in_prefix_cache(&right) {
let key = (left.as_str(), right.as_str(), proximity);
Ok(self.index.word_prefix_pair_proximity_docids.get(self.rtxn, &key)?.unwrap_or_default())
} else if prefix {
let r_words = word_typos(&right, true, 0, &self.words_fst)?;
self.all_word_pair_proximity_docids(&[(left, 0)], &r_words, proximity)
} else {
let key = (left.as_str(), right.as_str(), proximity);
Ok(self.index.word_pair_proximity_docids.get(self.rtxn, &key)?.unwrap_or_default())
}
},
(QueryKind::Tolerant { typo, word: left }, QueryKind::Exact { word: right, .. }) => {
let l_words = word_typos(&left, false, *typo, &self.words_fst)?;
if prefix && self.in_prefix_cache(&right) {
let mut docids = RoaringBitmap::new();
for (left, _) in l_words {
let key = (left.as_ref(), right.as_ref(), proximity);
let current_docids = self.index.word_prefix_pair_proximity_docids.get(self.rtxn, &key)?.unwrap_or_default();
docids.union_with(&current_docids);
}
Ok(docids)
} else if prefix {
let r_words = word_typos(&right, true, 0, &self.words_fst)?;
self.all_word_pair_proximity_docids(&l_words, &r_words, proximity)
} else {
self.all_word_pair_proximity_docids(&l_words, &[(right, 0)], proximity)
}
},
(QueryKind::Exact { word: left, .. }, QueryKind::Tolerant { typo, word: right }) => {
let r_words = word_typos(&right, prefix, *typo, &self.words_fst)?;
self.all_word_pair_proximity_docids(&[(left, 0)], &r_words, proximity)
},
(QueryKind::Tolerant { typo: l_typo, word: left }, QueryKind::Tolerant { typo: r_typo, word: right }) => {
let l_words = word_typos(&left, false, *l_typo, &self.words_fst)?;
let r_words = word_typos(&right, prefix, *r_typo, &self.words_fst)?;
self.all_word_pair_proximity_docids(&l_words, &r_words, proximity)
},
}
fn word_pair_proximity_docids(&self, left: &str, right: &str, proximity: u8) -> heed::Result<Option<RoaringBitmap>> {
let key = (left, right, proximity);
self.index.word_pair_proximity_docids.get(self.rtxn, &key)
}
fn word_prefix_pair_proximity_docids(&self, left: &str, right: &str, proximity: u8) -> heed::Result<Option<RoaringBitmap>> {
let key = (left, right, proximity);
self.index.word_prefix_pair_proximity_docids.get(self.rtxn, &key)
}
fn words_fst<'t>(&self) -> &'t fst::Set<Cow<[u8]>> {
&self.words_fst
}
fn in_prefix_cache(&self, word: &str) -> bool {
self.words_prefixes_fst.contains(word)
}
}
impl<'t> HeedContext<'t> {
@ -149,25 +100,91 @@ impl<'t> HeedContext<'t> {
words_prefixes_fst,
})
}
}
fn in_prefix_cache(&self, word: &str) -> bool {
self.words_prefixes_fst.contains(word)
fn all_word_pair_proximity_docids<T: AsRef<str>, U: AsRef<str>>(
ctx: &dyn Context,
left_words: &[(T, u8)],
right_words: &[(U, u8)],
proximity: u8
) -> anyhow::Result<RoaringBitmap> {
let mut docids = RoaringBitmap::new();
for (left, _l_typo) in left_words {
for (right, _r_typo) in right_words {
let current_docids = ctx.word_pair_proximity_docids(left.as_ref(), right.as_ref(), proximity)?.unwrap_or_default();
docids.union_with(&current_docids);
}
}
Ok(docids)
}
fn all_word_pair_proximity_docids<T: AsRef<str>, U: AsRef<str>>(
&self,
left_words: &[(T, u8)],
right_words: &[(U, u8)],
proximity: u8
) -> anyhow::Result<RoaringBitmap> {
let mut docids = RoaringBitmap::new();
for (left, _l_typo) in left_words {
for (right, _r_typo) in right_words {
let key = (left.as_ref(), right.as_ref(), proximity);
let current_docids = self.index.word_pair_proximity_docids.get(self.rtxn, &key)?.unwrap_or_default();
fn query_docids(ctx: &dyn Context, query: &Query) -> 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_typos(&word, true, 0, ctx.words_fst())?;
let mut docids = RoaringBitmap::new();
for (word, _typo) in words {
let current_docids = ctx.word_docids(&word)?.unwrap_or_default();
docids.union_with(&current_docids);
}
Ok(docids)
} else {
Ok(ctx.word_docids(&word)?.unwrap_or_default())
}
},
QueryKind::Tolerant { typo, word } => {
let words = word_typos(&word, query.prefix, *typo, ctx.words_fst())?;
let mut docids = RoaringBitmap::new();
for (word, _typo) in words {
let current_docids = ctx.word_docids(&word)?.unwrap_or_default();
docids.union_with(&current_docids);
}
}
Ok(docids)
Ok(docids)
},
}
}
fn query_pair_proximity_docids(ctx: &dyn Context, left: &Query, right: &Query, proximity: u8) -> anyhow::Result<RoaringBitmap> {
let prefix = right.prefix;
match (&left.kind, &right.kind) {
(QueryKind::Exact { word: left, .. }, QueryKind::Exact { word: right, .. }) => {
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_typos(&right, true, 0, ctx.words_fst())?;
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_typos(&left, false, *typo, ctx.words_fst())?;
if prefix && ctx.in_prefix_cache(&right) {
let mut docids = RoaringBitmap::new();
for (left, _) in l_words {
let current_docids = ctx.word_prefix_pair_proximity_docids(left.as_ref(), right.as_ref(), proximity)?.unwrap_or_default();
docids.union_with(&current_docids);
}
Ok(docids)
} else if prefix {
let r_words = word_typos(&right, true, 0, ctx.words_fst())?;
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_typos(&right, prefix, *typo, ctx.words_fst())?;
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_typos(&left, false, *l_typo, ctx.words_fst())?;
let r_words = word_typos(&right, prefix, *r_typo, ctx.words_fst())?;
all_word_pair_proximity_docids(ctx, &l_words, &r_words, proximity)
},
}
}

6
milli/src/search/criteria/typo.rs
View File

@ -5,7 +5,7 @@ use roaring::RoaringBitmap;
use crate::search::query_tree::{Operation, Query, QueryKind};
use crate::search::word_typos;
use super::{Candidates, Criterion, CriterionResult, Context};
use super::{Candidates, Criterion, CriterionResult, Context, query_docids, query_pair_proximity_docids};
// FIXME we must stop when the number of typos is equal to
// the maximum number of typos for this query tree.
@ -206,7 +206,7 @@ fn resolve_candidates<'t>(
for slice in ops.windows(2) {
match (&slice[0], &slice[1]) {
(Operation::Query(left), Operation::Query(right)) => {
match ctx.query_pair_proximity_docids(left, right, 1)? {
match query_pair_proximity_docids(ctx, left, right, 1)? {
pair_docids if pair_docids.is_empty() => {
return Ok(RoaringBitmap::new())
},
@ -233,7 +233,7 @@ fn resolve_candidates<'t>(
Ok(candidates)
},
Query(q) => if q.kind.typo() == number_typos {
Ok(ctx.query_docids(q)?)
Ok(query_docids(ctx, q)?)
} else {
Ok(RoaringBitmap::new())
},