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Introduce the word_documents_count method on the Context trait

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Kerollmops 2021-02-18 15:06:58 +01:00
parent 79a143b32f
commit 4f19749252
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1 changed files with 12 additions and 2 deletions
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14
milli/src/search/query_tree.rs
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@ -145,6 +145,12 @@ 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),
}
}
}
/// The query tree builder is the interface to build a query tree.
@ -158,6 +164,10 @@ impl<'a> Context for QueryTreeBuilder<'a> {
self.index.word_docids.get(self.rtxn, word)
}
fn word_documents_count(&self, word: &str) -> heed::Result<Option<u64>> {
self.index.word_documents_count(self.rtxn, word)
}
fn synonyms<S: AsRef<str>>(&self, _words: &[S]) -> heed::Result<Option<Vec<Vec<String>>>> {
Ok(None)
}
@ -201,8 +211,8 @@ fn split_best_frequency<'a>(ctx: &impl Context, word: &'a str) -> heed::Result<O
for (i, _) in chars {
let (left, right) = word.split_at(i);
let left_freq = ctx.word_docids(left)?.map(|docids| docids.len()).unwrap_or(0);
let right_freq = ctx.word_docids(right)?.map(|docids| docids.len()).unwrap_or(0);
let left_freq = ctx.word_documents_count(left)?.unwrap_or(0);
let right_freq = ctx.word_documents_count(right)?.unwrap_or(0);
let min_freq = cmp::min(left_freq, right_freq);
if min_freq != 0 && best.map_or(true, |(old, _, _)| min_freq > old) {