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Remove the duplicated code inside the facet_values_from_documents method

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Clément Renault 2021-01-27 18:31:09 +01:00 committed by Kerollmops
parent b6e91291fb
commit f5f4438b43
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1 changed files with 36 additions and 44 deletions
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80
src/search/facet/facet_distribution.rs
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@ -3,13 +3,14 @@ use std::ops::Bound::Unbounded;
use std::{cmp, fmt};
use anyhow::Context;
use heed::BytesDecode;
use roaring::RoaringBitmap;
use crate::facet::{FacetType, FacetValue};
use crate::heed_codec::facet::{FacetValueStringCodec, FacetLevelValueF64Codec, FacetLevelValueI64Codec};
use crate::heed_codec::facet::{FieldDocIdFacetStringCodec, FieldDocIdFacetF64Codec, FieldDocIdFacetI64Codec};
use crate::search::facet::{FacetIter, FacetRange};
use crate::{Index, FieldId};
use crate::{Index, FieldId, DocumentId};
/// The default number of values by facets that will
/// be fetched from the key-value store.
@ -66,55 +67,46 @@ impl<'a> FacetDistribution<'a> {
candidates: &RoaringBitmap,
) -> heed::Result<BTreeMap<FacetValue, u64>>
{
let mut key_buffer = vec![field_id];
fn fetch_facet_values<'t, KC, K: 't>(
index: &Index,
rtxn: &'t heed::RoTxn,
field_id: FieldId,
candidates: &RoaringBitmap,
) -> heed::Result<BTreeMap<FacetValue, u64>>
where
KC: BytesDecode<'t, DItem = (FieldId, DocumentId, K)>,
K: Into<FacetValue>,
{
let mut facet_values = BTreeMap::new();
let mut key_buffer = vec![field_id];
for docid in candidates.into_iter().take(CANDIDATES_THRESHOLD as usize) {
key_buffer.truncate(1);
key_buffer.extend_from_slice(&docid.to_be_bytes());
let iter = index.field_id_docid_facet_values
.prefix_iter(rtxn, &key_buffer)?
.remap_key_type::<KC>();
for result in iter {
let ((_, _, value), ()) = result?;
*facet_values.entry(value.into()).or_insert(0) += 1;
}
}
Ok(facet_values)
}
let index = self.index;
let rtxn = self.rtxn;
match facet_type {
FacetType::String => {
let mut facet_values = BTreeMap::new();
for docid in candidates.into_iter().take(CANDIDATES_THRESHOLD as usize) {
key_buffer.truncate(1);
key_buffer.extend_from_slice(&docid.to_be_bytes());
let iter = self.index.field_id_docid_facet_values
.prefix_iter(self.rtxn, &key_buffer)?
.remap_key_type::<FieldDocIdFacetStringCodec>();
for result in iter {
let ((_, _, value), ()) = result?;
*facet_values.entry(FacetValue::from(value)).or_insert(0) += 1;
}
}
Ok(facet_values)
fetch_facet_values::<FieldDocIdFacetStringCodec, _>(index, rtxn, field_id, candidates)
},
FacetType::Float => {
let mut facet_values = BTreeMap::new();
for docid in candidates {
key_buffer.truncate(1);
key_buffer.extend_from_slice(&docid.to_be_bytes());
let iter = self.index.field_id_docid_facet_values
.prefix_iter(self.rtxn, &key_buffer)?
.remap_key_type::<FieldDocIdFacetF64Codec>();
for result in iter {
let ((_, _, value), ()) = result?;
*facet_values.entry(FacetValue::from(value)).or_insert(0) += 1;
}
}
Ok(facet_values)
fetch_facet_values::<FieldDocIdFacetF64Codec, _>(index, rtxn, field_id, candidates)
},
FacetType::Integer => {
let mut facet_values = BTreeMap::new();
for docid in candidates {
key_buffer.truncate(1);
key_buffer.extend_from_slice(&docid.to_be_bytes());
let iter = self.index.field_id_docid_facet_values
.prefix_iter(self.rtxn, &key_buffer)?
.remap_key_type::<FieldDocIdFacetI64Codec>();
for result in iter {
let ((_, _, value), ()) = result?;
*facet_values.entry(FacetValue::from(value)).or_insert(0) += 1;
}
}
Ok(facet_values)
fetch_facet_values::<FieldDocIdFacetI64Codec, _>(index, rtxn, field_id, candidates)
},
}
}