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revert removal of word_documents_count method

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This commit is contained in:
Akshay Kulkarni 2022-10-13 13:14:27 +05:30
parent 32f825d442
commit 8195fc6141
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GPG Key ID: CAB2F21265743909
1 changed files with 11 additions and 7 deletions
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18
milli/src/search/query_tree.rs
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@ -147,6 +147,12 @@ impl fmt::Debug for Query {
trait Context {
fn word_docids(&self, word: &str) -> heed::Result<Option<RoaringBitmap>>;
fn synonyms<S: AsRef<str>>(&self, words: &[S]) -> heed::Result<Option<Vec<Vec<String>>>>;
fn word_documents_count(&self, word: &str) -> heed::Result<Option<u64>> {
match self.word_docids(word)? {
Some(rb) => Ok(Some(rb.len())),
None => Ok(None),
}
}
/// Returns the minimum word len for 1 and 2 typos.
fn min_word_len_for_typo(&self) -> heed::Result<(u8, u8)>;
fn exact_words(&self) -> Option<&fst::Set<Cow<[u8]>>>;
@ -276,7 +282,7 @@ impl<'a> QueryTreeBuilder<'a> {
fn split_best_frequency<'a>(
ctx: &impl Context,
word: &'a str,
) -> heed::Result<Option<(u64, &'a str, &'a str)>> {
) -> heed::Result<Option<(&'a str, &'a str)>> {
let chars = word.char_indices().skip(1);
let mut best = None;
@ -290,7 +296,7 @@ fn split_best_frequency<'a>(
}
}
Ok(best)
Ok(best.map(|(_, left, right)| (left, right)))
}
#[derive(Clone)]
@ -359,7 +365,7 @@ fn create_query_tree(
// 4. wrap all in an OR operation
PrimitiveQueryPart::Word(word, prefix) => {
let mut children = synonyms(ctx, &[&word])?.unwrap_or_default();
if let Some((_, left, right)) = split_best_frequency(ctx, &word)? {
if let Some((left, right)) = split_best_frequency(ctx, &word)? {
children.push(Operation::Phrase(vec![left.to_string(), right.to_string()]));
}
let (word_len_one_typo, word_len_two_typo) = ctx.min_word_len_for_typo()?;
@ -505,9 +511,7 @@ fn create_query_tree(
.filter(|(_, part)| !part.is_phrase())
.max_by_key(|(_, part)| match part {
PrimitiveQueryPart::Word(s, _) => {
let (pair_freq, _, _) =
split_best_frequency(ctx, s).unwrap_or_default().unwrap_or_default();
pair_freq
ctx.word_documents_count(s).unwrap_or_default().unwrap_or(u64::max_value());
}
_ => unreachable!(),
})
@ -554,7 +558,7 @@ fn create_matching_words(
}
}
if let Some((_, left, right)) = split_best_frequency(ctx, &word)? {
if let Some((left, right)) = split_best_frequency(ctx, &word)? {
let left = MatchingWord::new(left.to_string(), 0, false);
let right = MatchingWord::new(right.to_string(), 0, false);
matching_words.push((vec![left, right], vec![id]));