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Prepare refactor of facets database

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Prepare refactor of facets database
This commit is contained in:
Loïc Lecrenier 2022-08-29 16:01:54 +02:00 committed by Loïc Lecrenier
parent 004c09a8e2
commit c3f49f766d
27 changed files with 1662 additions and 1624 deletions
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1
infos/src/main.rs Normal file
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@ -0,0 +1 @@

89
milli/src/heed_codec/facet/facet_level_value_f64_codec.rs
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@ -1,89 +0,0 @@
use std::borrow::Cow;
use std::convert::TryInto;
use crate::facet::value_encoding::f64_into_bytes;
use crate::{try_split_array_at, FieldId};
// TODO do not de/serialize right bound when level = 0
pub struct FacetLevelValueF64Codec;
impl<'a> heed::BytesDecode<'a> for FacetLevelValueF64Codec {
type DItem = (FieldId, u8, f64, f64);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id_bytes, bytes) = try_split_array_at(bytes)?;
let field_id = u16::from_be_bytes(field_id_bytes);
let (level, bytes) = bytes.split_first()?;
let (left, right) = if *level != 0 {
let left = bytes[16..24].try_into().ok().map(f64::from_be_bytes)?;
let right = bytes[24..].try_into().ok().map(f64::from_be_bytes)?;
(left, right)
} else {
let left = bytes[8..].try_into().ok().map(f64::from_be_bytes)?;
(left, left)
};
Some((field_id, *level, left, right))
}
}
impl heed::BytesEncode<'_> for FacetLevelValueF64Codec {
type EItem = (FieldId, u8, f64, f64);
fn bytes_encode((field_id, level, left, right): &Self::EItem) -> Option<Cow<[u8]>> {
let mut buffer = [0u8; 32];
let len = if *level != 0 {
// Write the globally ordered floats.
let bytes = f64_into_bytes(*left)?;
buffer[..8].copy_from_slice(&bytes[..]);
let bytes = f64_into_bytes(*right)?;
buffer[8..16].copy_from_slice(&bytes[..]);
// Then the f64 values just to be able to read them back.
let bytes = left.to_be_bytes();
buffer[16..24].copy_from_slice(&bytes[..]);
let bytes = right.to_be_bytes();
buffer[24..].copy_from_slice(&bytes[..]);
32 // length
} else {
// Write the globally ordered floats.
let bytes = f64_into_bytes(*left)?;
buffer[..8].copy_from_slice(&bytes[..]);
// Then the f64 values just to be able to read them back.
let bytes = left.to_be_bytes();
buffer[8..16].copy_from_slice(&bytes[..]);
16 // length
};
let mut bytes = Vec::with_capacity(len + 3);
bytes.extend_from_slice(&field_id.to_be_bytes());
bytes.push(*level);
bytes.extend_from_slice(&buffer[..len]);
Some(Cow::Owned(bytes))
}
}
#[cfg(test)]
mod tests {
use heed::{BytesDecode, BytesEncode};
use super::*;
#[test]
fn globally_ordered_f64() {
let bytes = FacetLevelValueF64Codec::bytes_encode(&(3, 0, 32.0, 0.0)).unwrap();
let (name, level, left, right) = FacetLevelValueF64Codec::bytes_decode(&bytes).unwrap();
assert_eq!((name, level, left, right), (3, 0, 32.0, 32.0));
let bytes = FacetLevelValueF64Codec::bytes_encode(&(3, 1, -32.0, 32.0)).unwrap();
let (name, level, left, right) = FacetLevelValueF64Codec::bytes_decode(&bytes).unwrap();
assert_eq!((name, level, left, right), (3, 1, -32.0, 32.0));
}
}

53
milli/src/heed_codec/facet/facet_level_value_u32_codec.rs
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@ -1,53 +0,0 @@
use std::borrow::Cow;
use std::convert::TryInto;
use std::num::NonZeroU8;
use crate::{try_split_array_at, FieldId};
/// A codec that stores the field id, level 1 and higher and the groups ids.
///
/// It can only be used to encode the facet string of the level 1 or higher.
pub struct FacetLevelValueU32Codec;
impl<'a> heed::BytesDecode<'a> for FacetLevelValueU32Codec {
type DItem = (FieldId, NonZeroU8, u32, u32);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id_bytes, bytes) = try_split_array_at(bytes)?;
let field_id = u16::from_be_bytes(field_id_bytes);
let (level, bytes) = bytes.split_first()?;
let level = NonZeroU8::new(*level)?;
let left = bytes[8..12].try_into().ok().map(u32::from_be_bytes)?;
let right = bytes[12..].try_into().ok().map(u32::from_be_bytes)?;
Some((field_id, level, left, right))
}
}
impl heed::BytesEncode<'_> for FacetLevelValueU32Codec {
type EItem = (FieldId, NonZeroU8, u32, u32);
fn bytes_encode((field_id, level, left, right): &Self::EItem) -> Option<Cow<[u8]>> {
let mut buffer = [0u8; 16];
// Write the big-endian integers.
let bytes = left.to_be_bytes();
buffer[..4].copy_from_slice(&bytes[..]);
let bytes = right.to_be_bytes();
buffer[4..8].copy_from_slice(&bytes[..]);
// Then the u32 values just to be able to read them back.
let bytes = left.to_be_bytes();
buffer[8..12].copy_from_slice(&bytes[..]);
let bytes = right.to_be_bytes();
buffer[12..].copy_from_slice(&bytes[..]);
let mut bytes = Vec::with_capacity(buffer.len() + 2 + 1);
bytes.extend_from_slice(&field_id.to_be_bytes());
bytes.push(level.get());
bytes.extend_from_slice(&buffer);
Some(Cow::Owned(bytes))
}
}

50
milli/src/heed_codec/facet/facet_string_level_zero_codec.rs
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@ -1,50 +0,0 @@
use std::borrow::Cow;
use std::str;
use crate::{try_split_array_at, FieldId};
/// A codec that stores the field id, level 0, and facet string.
///
/// It can only be used to encode the facet string of the level 0,
/// as it hardcodes the level.
///
/// We encode the level 0 to not break the lexicographical ordering of the LMDB keys,
/// and make sure that the levels are not mixed-up. The level 0 is special, the key
/// are strings, other levels represent groups and keys are simply two integers.
pub struct FacetStringLevelZeroCodec;
impl FacetStringLevelZeroCodec {
pub fn serialize_into(field_id: FieldId, value: &str, out: &mut Vec<u8>) {
out.reserve(value.len() + 2);
out.extend_from_slice(&field_id.to_be_bytes());
out.push(0); // the level zero (for LMDB ordering only)
out.extend_from_slice(value.as_bytes());
}
}
impl<'a> heed::BytesDecode<'a> for FacetStringLevelZeroCodec {
type DItem = (FieldId, &'a str);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id_bytes, bytes) = try_split_array_at(bytes)?;
let field_id = u16::from_be_bytes(field_id_bytes);
let (level, bytes) = bytes.split_first()?;
if *level != 0 {
return None;
}
let value = str::from_utf8(bytes).ok()?;
Some((field_id, value))
}
}
impl<'a> heed::BytesEncode<'a> for FacetStringLevelZeroCodec {
type EItem = (FieldId, &'a str);
fn bytes_encode((field_id, value): &Self::EItem) -> Option<Cow<[u8]>> {
let mut bytes = Vec::new();
FacetStringLevelZeroCodec::serialize_into(*field_id, value, &mut bytes);
Some(Cow::Owned(bytes))
}
}

90
milli/src/heed_codec/facet/facet_string_level_zero_value_codec.rs
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@ -1,90 +0,0 @@
use std::borrow::Cow;
use std::convert::TryInto;
use std::{marker, str};
use crate::error::SerializationError;
use crate::heed_codec::RoaringBitmapCodec;
use crate::{try_split_array_at, try_split_at, Result};
pub type FacetStringLevelZeroValueCodec = StringValueCodec<RoaringBitmapCodec>;
/// A codec that encodes a string in front of a value.
///
/// The usecase is for the facet string levels algorithm where we must know the
/// original string of a normalized facet value, the original values are stored
/// in the value to not break the lexicographical ordering of the LMDB keys.
pub struct StringValueCodec<C>(marker::PhantomData<C>);
impl<'a, C> heed::BytesDecode<'a> for StringValueCodec<C>
where
C: heed::BytesDecode<'a>,
{
type DItem = (&'a str, C::DItem);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (string, bytes) = decode_prefix_string(bytes)?;
C::bytes_decode(bytes).map(|item| (string, item))
}
}
impl<'a, C> heed::BytesEncode<'a> for StringValueCodec<C>
where
C: heed::BytesEncode<'a>,
{
type EItem = (&'a str, C::EItem);
fn bytes_encode((string, value): &'a Self::EItem) -> Option<Cow<[u8]>> {
let value_bytes = C::bytes_encode(&value)?;
let mut bytes = Vec::with_capacity(2 + string.len() + value_bytes.len());
encode_prefix_string(string, &mut bytes).ok()?;
bytes.extend_from_slice(&value_bytes[..]);
Some(Cow::Owned(bytes))
}
}
pub fn decode_prefix_string(value: &[u8]) -> Option<(&str, &[u8])> {
let (original_length_bytes, bytes) = try_split_array_at(value)?;
let original_length = u16::from_be_bytes(original_length_bytes) as usize;
let (string, bytes) = try_split_at(bytes, original_length)?;
let string = str::from_utf8(string).ok()?;
Some((string, bytes))
}
pub fn encode_prefix_string(string: &str, buffer: &mut Vec<u8>) -> Result<()> {
let string_len: u16 =
string.len().try_into().map_err(|_| SerializationError::InvalidNumberSerialization)?;
buffer.extend_from_slice(&string_len.to_be_bytes());
buffer.extend_from_slice(string.as_bytes());
Ok(())
}
#[cfg(test)]
mod tests {
use heed::types::Unit;
use heed::{BytesDecode, BytesEncode};
use roaring::RoaringBitmap;
use super::*;
#[test]
fn deserialize_roaring_bitmaps() {
let string = "abc";
let docids: RoaringBitmap = (0..100).chain(3500..4398).collect();
let key = (string, docids.clone());
let bytes = StringValueCodec::<RoaringBitmapCodec>::bytes_encode(&key).unwrap();
let (out_string, out_docids) =
StringValueCodec::<RoaringBitmapCodec>::bytes_decode(&bytes).unwrap();
assert_eq!((out_string, out_docids), (string, docids));
}
#[test]
fn deserialize_unit() {
let string = "def";
let key = (string, ());
let bytes = StringValueCodec::<Unit>::bytes_encode(&key).unwrap();
let (out_string, out_unit) = StringValueCodec::<Unit>::bytes_decode(&bytes).unwrap();
assert_eq!((out_string, out_unit), (string, ()));
}
}

22
milli/src/heed_codec/facet/mod.rs
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@ -1,19 +1,21 @@
mod facet_level_value_f64_codec;
mod facet_level_value_u32_codec;
mod facet_string_level_zero_codec;
mod facet_string_level_zero_value_codec;
// mod facet_level_value_f64_codec;
// mod facet_level_value_u32_codec;
// mod facet_string_level_zero_codec;
// mod facet_string_level_zero_value_codec;
mod facet_string_zero_bounds_value_codec;
mod field_doc_id_facet_f64_codec;
mod field_doc_id_facet_string_codec;
pub mod new;
use heed::types::OwnedType;
pub use self::facet_level_value_f64_codec::FacetLevelValueF64Codec;
pub use self::facet_level_value_u32_codec::FacetLevelValueU32Codec;
pub use self::facet_string_level_zero_codec::FacetStringLevelZeroCodec;
pub use self::facet_string_level_zero_value_codec::{
decode_prefix_string, encode_prefix_string, FacetStringLevelZeroValueCodec,
};
// pub use self::facet_level_value_f64_codec::FacetLevelValueF64Codec;
// pub use self::facet_level_value_u32_codec::FacetLevelValueU32Codec;
// pub use self::facet_string_level_zero_codec::FacetStringLevelZeroCodec;
// pub use self::facet_string_level_zero_value_codec::{
// decode_prefix_string, encode_prefix_string, FacetStringLevelZeroValueCodec,
// };
pub use self::facet_string_zero_bounds_value_codec::FacetStringZeroBoundsValueCodec;
pub use self::field_doc_id_facet_f64_codec::FieldDocIdFacetF64Codec;
pub use self::field_doc_id_facet_string_codec::FieldDocIdFacetStringCodec;

148
milli/src/heed_codec/facet/new/mod.rs Normal file
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@ -0,0 +1,148 @@
use heed::{BytesDecode, BytesEncode};
use roaring::RoaringBitmap;
use std::{borrow::Cow, convert::TryFrom, marker::PhantomData};
pub mod ordered_f64_codec;
pub mod str_ref;
// TODO: these codecs were quickly written and not fast/resilient enough
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
pub struct FacetKey<T> {
pub field_id: u16,
pub level: u8,
pub left_bound: T,
}
impl<'a> FacetKey<&'a [u8]> {
pub fn into_owned(self) -> FacetKey<Vec<u8>> {
FacetKey {
field_id: self.field_id,
level: self.level,
left_bound: self.left_bound.to_vec(),
}
}
}
impl<'a> FacetKey<Vec<u8>> {
pub fn as_ref(&self) -> FacetKey<&[u8]> {
FacetKey {
field_id: self.field_id,
level: self.level,
left_bound: self.left_bound.as_slice(),
}
}
}
pub struct FacetGroupValue {
pub size: u8,
pub bitmap: RoaringBitmap,
}
pub struct FacetKeyCodec<T> {
_phantom: PhantomData<T>,
}
impl<'a, T> heed::BytesEncode<'a> for FacetKeyCodec<T>
where
T: BytesEncode<'a>,
T::EItem: Sized,
{
type EItem = FacetKey<T::EItem>;
fn bytes_encode(value: &'a Self::EItem) -> Option<Cow<'a, [u8]>> {
let mut v = vec![];
v.extend_from_slice(&value.field_id.to_be_bytes());
v.extend_from_slice(&[value.level]);
let bound = T::bytes_encode(&value.left_bound).unwrap();
v.extend_from_slice(&bound);
Some(Cow::Owned(v))
}
}
impl<'a, T> heed::BytesDecode<'a> for FacetKeyCodec<T>
where
T: BytesDecode<'a>,
{
type DItem = FacetKey<T::DItem>;
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let fid = u16::from_be_bytes(<[u8; 2]>::try_from(&bytes[0..=1]).unwrap());
let level = bytes[2];
let bound = T::bytes_decode(&bytes[3..]).unwrap();
Some(FacetKey { field_id: fid, level, left_bound: bound })
}
}
pub struct FacetGroupValueCodec;
impl<'a> heed::BytesEncode<'a> for FacetGroupValueCodec {
type EItem = FacetGroupValue;
fn bytes_encode(value: &'a Self::EItem) -> Option<Cow<'a, [u8]>> {
let mut v = vec![];
v.push(value.size);
value.bitmap.serialize_into(&mut v).unwrap();
Some(Cow::Owned(v))
}
}
impl<'a> heed::BytesDecode<'a> for FacetGroupValueCodec {
type DItem = FacetGroupValue;
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let size = bytes[0];
let bitmap = RoaringBitmap::deserialize_from(&bytes[1..]).unwrap();
Some(FacetGroupValue { size, bitmap })
}
}
// TODO: get rid of this codec as it is named confusingly + should really be part of heed
// or even replace the current ByteSlice codec
pub struct MyByteSlice;
impl<'a> BytesEncode<'a> for MyByteSlice {
type EItem = &'a [u8];
fn bytes_encode(item: &'a Self::EItem) -> Option<Cow<'a, [u8]>> {
Some(Cow::Borrowed(item))
}
}
impl<'a> BytesDecode<'a> for MyByteSlice {
type DItem = &'a [u8];
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
Some(bytes)
}
}
// I won't need these ones anymore
// pub struct U16Codec;
// impl<'a> BytesEncode<'a> for U16Codec {
// type EItem = u16;
// fn bytes_encode(item: &'a Self::EItem) -> Option<Cow<'a, [u8]>> {
// Some(Cow::Owned(item.to_be_bytes().to_vec()))
// }
// }
// impl<'a> BytesDecode<'a> for U16Codec {
// type DItem = u16;
// fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
// Some(u16::from_be_bytes(bytes[0..=1].try_into().unwrap()))
// }
// }
// pub struct StrCodec;
// impl<'a> BytesEncode<'a> for StrCodec {
// type EItem = &'a str;
// fn bytes_encode(item: &'a &'a str) -> Option<Cow<'a, [u8]>> {
// Some(Cow::Borrowed(item.as_bytes()))
// }
// }
// impl<'a> BytesDecode<'a> for StrCodec {
// type DItem = &'a str;
// fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
// let s = std::str::from_utf8(bytes).unwrap();
// Some(s)
// }
// }

36
milli/src/heed_codec/facet/new/ordered_f64_codec.rs Normal file
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@ -0,0 +1,36 @@
use std::{borrow::Cow, convert::TryInto};
use heed::BytesDecode;
use crate::facet::value_encoding::f64_into_bytes;
pub struct OrderedF64Codec;
impl<'a> BytesDecode<'a> for OrderedF64Codec {
type DItem = f64;
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
if bytes.len() < 16 {
return None;
}
let f = bytes[8..].try_into().ok().map(f64::from_be_bytes)?;
Some(f)
}
}
impl heed::BytesEncode<'_> for OrderedF64Codec {
type EItem = f64;
fn bytes_encode(f: &Self::EItem) -> Option<Cow<[u8]>> {
let mut buffer = [0u8; 16];
// write the globally ordered float
let bytes = f64_into_bytes(*f)?;
buffer[..8].copy_from_slice(&bytes[..]);
// Then the f64 value just to be able to read it back
let bytes = f.to_be_bytes();
buffer[8..16].copy_from_slice(&bytes[..]);
Some(Cow::Owned(buffer.to_vec()))
}
}

20
milli/src/heed_codec/facet/new/str_ref.rs Normal file
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@ -0,0 +1,20 @@
use std::borrow::Cow;
use heed::{BytesDecode, BytesEncode};
pub struct StrRefCodec;
impl<'a> BytesEncode<'a> for StrRefCodec {
type EItem = &'a str;
fn bytes_encode(item: &'a &'a str) -> Option<Cow<'a, [u8]>> {
Some(Cow::Borrowed(item.as_bytes()))
}
}
impl<'a> BytesDecode<'a> for StrRefCodec {
type DItem = &'a str;
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let s = std::str::from_utf8(bytes).unwrap();
Some(s)
}
}

17
milli/src/index.rs
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@ -13,9 +13,14 @@ use time::OffsetDateTime;
use crate::error::{InternalError, UserError};
use crate::fields_ids_map::FieldsIdsMap;
use crate::heed_codec::facet::new::ordered_f64_codec::OrderedF64Codec;
use crate::heed_codec::facet::new::str_ref::StrRefCodec;
use crate::heed_codec::facet::new::{FacetGroupValueCodec, FacetKeyCodec};
use crate::heed_codec::facet::{
FacetLevelValueF64Codec, FacetStringLevelZeroCodec, FacetStringLevelZeroValueCodec,
FieldDocIdFacetF64Codec, FieldDocIdFacetStringCodec, FieldIdCodec,
// FacetLevelValueF64Codec, FacetStringLevelZeroCodec, FacetStringLevelZeroValueCodec,
FieldDocIdFacetF64Codec,
FieldDocIdFacetStringCodec,
FieldIdCodec,
};
use crate::{
default_criteria, BEU32StrCodec, BoRoaringBitmapCodec, CboRoaringBitmapCodec, Criterion,
@ -123,10 +128,10 @@ pub struct Index {
/// Maps the facet field id and the docids for which this field exists
pub facet_id_exists_docids: Database<FieldIdCodec, CboRoaringBitmapCodec>,
/// Maps the facet field id, level and the number with the docids that corresponds to it.
pub facet_id_f64_docids: Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
/// Maps the facet field id and the string with the original string and docids that corresponds to it.
pub facet_id_string_docids: Database<FacetStringLevelZeroCodec, FacetStringLevelZeroValueCodec>,
/// Maps the facet field id and ranges of numbers with the docids that corresponds to them.
pub facet_id_f64_docids: Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
/// Maps the facet field id and ranges of strings with the docids that corresponds to them.
pub facet_id_string_docids: Database<FacetKeyCodec<StrRefCodec>, FacetGroupValueCodec>,
/// Maps the document id, the facet field id and the numbers.
pub field_id_docid_facet_f64s: Database<FieldDocIdFacetF64Codec, Unit>,

33
milli/src/search/criteria/asc_desc.rs
View File

@ -7,7 +7,7 @@ use roaring::RoaringBitmap;
use super::{Criterion, CriterionParameters, CriterionResult};
use crate::search::criteria::{resolve_query_tree, CriteriaBuilder};
use crate::search::facet::{FacetNumberIter, FacetStringIter};
// use crate::search::facet::FacetStringIter;
use crate::search::query_tree::Operation;
use crate::{FieldId, Index, Result};
@ -186,23 +186,24 @@ fn facet_ordered<'t>(
iterative_facet_string_ordered_iter(index, rtxn, field_id, is_ascending, candidates)?;
Ok(Box::new(number_iter.chain(string_iter).map(Ok)) as Box<dyn Iterator<Item = _>>)
} else {
let facet_number_fn = if is_ascending {
FacetNumberIter::new_reducing
} else {
FacetNumberIter::new_reverse_reducing
};
let number_iter = facet_number_fn(rtxn, index, field_id, candidates.clone())?
.map(|res| res.map(|(_, docids)| docids));
todo!()
// let facet_number_fn = if is_ascending {
// FacetNumberIter::new_reducing
// } else {
// FacetNumberIter::new_reverse_reducing
// };
// let number_iter = facet_number_fn(rtxn, index, field_id, candidates.clone())?
// .map(|res| res.map(|(_, docids)| docids));
let facet_string_fn = if is_ascending {
FacetStringIter::new_reducing
} else {
FacetStringIter::new_reverse_reducing
};
let string_iter = facet_string_fn(rtxn, index, field_id, candidates)?
.map(|res| res.map(|(_, _, docids)| docids));
// let facet_string_fn = if is_ascending {
// FacetStringIter::new_reducing
// } else {
// FacetStringIter::new_reverse_reducing
// };
// let string_iter = facet_string_fn(rtxn, index, field_id, candidates)?
// .map(|res| res.map(|(_, _, docids)| docids));
Ok(Box::new(number_iter.chain(string_iter)))
// Ok(Box::new(number_iter.chain(string_iter)))
}
}

10
milli/src/search/distinct/facet_distinct.rs
View File

@ -6,6 +6,7 @@ use roaring::RoaringBitmap;
use super::{Distinct, DocIter};
use crate::error::InternalError;
use crate::heed_codec::facet::new::FacetKey;
use crate::heed_codec::facet::*;
use crate::index::db_name;
use crate::{DocumentId, FieldId, Index, Result};
@ -47,13 +48,16 @@ impl<'a> FacetDistinctIter<'a> {
fn facet_string_docids(&self, key: &str) -> heed::Result<Option<RoaringBitmap>> {
self.index
.facet_id_string_docids
.get(self.txn, &(self.distinct, key))
.map(|result| result.map(|(_original, docids)| docids))
.get(self.txn, &FacetKey { field_id: self.distinct, level: 0, left_bound: key })
.map(|opt| opt.map(|v| v.bitmap))
}
fn facet_number_docids(&self, key: f64) -> heed::Result<Option<RoaringBitmap>> {
// get facet docids on level 0
self.index.facet_id_f64_docids.get(self.txn, &(self.distinct, 0, key, key))
self.index
.facet_id_f64_docids
.get(self.txn, &FacetKey { field_id: self.distinct, level: 0, left_bound: key })
.map(|opt| opt.map(|v| v.bitmap))
}
fn distinct_string(&mut self, id: DocumentId) -> Result<()> {

120
milli/src/search/facet/facet_distribution.rs
View File

@ -7,10 +7,8 @@ use roaring::RoaringBitmap;
use crate::error::UserError;
use crate::facet::FacetType;
use crate::heed_codec::facet::{
FacetStringLevelZeroCodec, FieldDocIdFacetF64Codec, FieldDocIdFacetStringCodec,
};
use crate::search::facet::{FacetNumberIter, FacetNumberRange, FacetStringIter};
use crate::heed_codec::facet::{FieldDocIdFacetF64Codec, FieldDocIdFacetStringCodec};
// use crate::search::facet::FacetStringIter;
use crate::{FieldId, Index, Result};
/// The default number of values by facets that will
@ -133,21 +131,22 @@ impl<'a> FacetDistribution<'a> {
candidates: &RoaringBitmap,
distribution: &mut BTreeMap<String, u64>,
) -> heed::Result<()> {
let iter =
FacetNumberIter::new_non_reducing(self.rtxn, self.index, field_id, candidates.clone())?;
todo!()
// let iter =
// FacetNumberIter::new_non_reducing(self.rtxn, self.index, field_id, candidates.clone())?;
for result in iter {
let (value, mut docids) = result?;
docids &= candidates;
if !docids.is_empty() {
distribution.insert(value.to_string(), docids.len());
}
if distribution.len() == self.max_values_per_facet {
break;
}
}
// for result in iter {
// let (value, mut docids) = result?;
// docids &= candidates;
// if !docids.is_empty() {
// distribution.insert(value.to_string(), docids.len());
// }
// if distribution.len() == self.max_values_per_facet {
// break;
// }
// }
Ok(())
// Ok(())
}
fn facet_strings_distribution_from_facet_levels(
@ -156,21 +155,22 @@ impl<'a> FacetDistribution<'a> {
candidates: &RoaringBitmap,
distribution: &mut BTreeMap<String, u64>,
) -> heed::Result<()> {
let iter =
FacetStringIter::new_non_reducing(self.rtxn, self.index, field_id, candidates.clone())?;
todo!()
// let iter =
// FacetStringIter::new_non_reducing(self.rtxn, self.index, field_id, candidates.clone())?;
for result in iter {
let (_normalized, original, mut docids) = result?;
docids &= candidates;
if !docids.is_empty() {
distribution.insert(original.to_string(), docids.len());
}
if distribution.len() == self.max_values_per_facet {
break;
}
}
// for result in iter {
// let (_normalized, original, mut docids) = result?;
// docids &= candidates;
// if !docids.is_empty() {
// distribution.insert(original.to_string(), docids.len());
// }
// if distribution.len() == self.max_values_per_facet {
// break;
// }
// }
Ok(())
// Ok(())
}
/// Placeholder search, a.k.a. no candidates were specified. We iterate throught the
@ -179,41 +179,43 @@ impl<'a> FacetDistribution<'a> {
&self,
field_id: FieldId,
) -> heed::Result<BTreeMap<String, u64>> {
let mut distribution = BTreeMap::new();
todo!()
// let mut distribution = BTreeMap::new();
let db = self.index.facet_id_f64_docids;
let range = FacetNumberRange::new(self.rtxn, db, field_id, 0, Unbounded, Unbounded)?;
// let db = self.index.facet_id_f64_docids;
// let range = FacetNumberRange::new(self.rtxn, db, field_id, 0, Unbounded, Unbounded)?;
for result in range {
let ((_, _, value, _), docids) = result?;
distribution.insert(value.to_string(), docids.len());
if distribution.len() == self.max_values_per_facet {
break;
}
}
// for result in range {
// let ((_, _, value, _), docids) = result?;
// distribution.insert(value.to_string(), docids.len());
// if distribution.len() == self.max_values_per_facet {
// break;
// }
// }
let iter = self
.index
.facet_id_string_docids
.remap_key_type::<ByteSlice>()
.prefix_iter(self.rtxn, &field_id.to_be_bytes())?
.remap_key_type::<FacetStringLevelZeroCodec>();
// let iter = self
// .index
// .facet_id_string_docids
// .remap_key_type::<ByteSlice>()
// .prefix_iter(self.rtxn, &field_id.to_be_bytes())?
// .remap_key_type::<FacetStringLevelZeroCodec>();
let mut normalized_distribution = BTreeMap::new();
for result in iter {
let ((_, normalized_value), (original_value, docids)) = result?;
normalized_distribution.insert(normalized_value, (original_value, docids.len()));
if normalized_distribution.len() == self.max_values_per_facet {
break;
}
}
// let mut normalized_distribution = BTreeMap::new();
// for result in iter {
// let ((_, normalized_value), group_value) = result?;
// normalized_distribution
// .insert(normalized_value, (normalized_value, group_value.bitmap.len()));
// if normalized_distribution.len() == self.max_values_per_facet {
// break;
// }
// }
let iter = normalized_distribution
.into_iter()
.map(|(_normalized, (original, count))| (original.to_string(), count));
distribution.extend(iter);
// let iter = normalized_distribution
// .into_iter()
// .map(|(_normalized, (original, count))| (original.to_string(), count));
// distribution.extend(iter);
Ok(distribution)
// Ok(distribution)
}
fn facet_values(&self, field_id: FieldId) -> heed::Result<BTreeMap<String, u64>> {

539
milli/src/search/facet/facet_number.rs
View File

@ -1,248 +1,335 @@
use std::ops::Bound::{self, Excluded, Included, Unbounded};
// use std::ops::Bound::{self, Excluded, Included, Unbounded};
use either::Either::{self, Left, Right};
use heed::types::{ByteSlice, DecodeIgnore};
use heed::{Database, LazyDecode, RoRange, RoRevRange};
use roaring::RoaringBitmap;
// use either::Either::{self, Left, Right};
// use heed::types::{ByteSlice, DecodeIgnore};
// use heed::{BytesDecode, BytesEncode, Database, Lazy, LazyDecode, RoRange, RoRevRange};
// use obkv::Key;
// use roaring::RoaringBitmap;
use crate::heed_codec::facet::FacetLevelValueF64Codec;
use crate::heed_codec::CboRoaringBitmapCodec;
use crate::{FieldId, Index};
// use crate::heed_codec::facet::new::ordered_f64_codec::OrderedF64Codec;
// use crate::heed_codec::facet::new::{FacetGroupValueCodec, FacetKey, FacetKeyCodec};
// use crate::heed_codec::CboRoaringBitmapCodec;
// use crate::{FieldId, Index};
pub struct FacetNumberRange<'t> {
iter: RoRange<'t, FacetLevelValueF64Codec, LazyDecode<CboRoaringBitmapCodec>>,
end: Bound<f64>,
}
// pub struct FacetNumberRange<'t, 'e> {
// rtxn: &'t heed::RoTxn<'e>,
// db: Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
// iter: RoRange<'t, FacetKeyCodec<OrderedF64Codec>, LazyDecode<FacetGroupValueCodec>>,
// max_bound: f64,
// previous: Option<(FacetKey<f64>, Lazy<'t, FacetGroupValueCodec>)>,
// field_id: FieldId,
// end: Bound<f64>,
// }
impl<'t> FacetNumberRange<'t> {
pub fn new(
rtxn: &'t heed::RoTxn,
db: Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
field_id: FieldId,
level: u8,
left: Bound<f64>,
right: Bound<f64>,
) -> heed::Result<FacetNumberRange<'t>> {
let left_bound = match left {
Included(left) => Included((field_id, level, left, f64::MIN)),
Excluded(left) => Excluded((field_id, level, left, f64::MIN)),
Unbounded => Included((field_id, level, f64::MIN, f64::MIN)),
};
let right_bound = Included((field_id, level, f64::MAX, f64::MAX));
let iter = db.lazily_decode_data().range(rtxn, &(left_bound, right_bound))?;
Ok(FacetNumberRange { iter, end: right })
}
}
// impl<'t, 'e> FacetNumberRange<'t, 'e> {
// pub fn new(
// rtxn: &'t heed::RoTxn<'e>,
// db: Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
// field_id: FieldId,
// level: u8,
// left: Bound<f64>,
// right: Bound<f64>,
// ) -> heed::Result<FacetNumberRange<'t, 'e>> {
// let left_bound = match left {
// Included(left_bound) => Included(FacetKey { field_id, level, left_bound }),
// Excluded(left_bound) => Excluded(FacetKey { field_id, level, left_bound }),
// Unbounded => Included(FacetKey { field_id, level, left_bound: f64::MIN }),
// };
impl<'t> Iterator for FacetNumberRange<'t> {
type Item = heed::Result<((FieldId, u8, f64, f64), RoaringBitmap)>;
// let mut iter = db.lazily_decode_data().range(rtxn, &(left_bound, Unbounded))?;
// let mut previous = iter.next().transpose()?;
fn next(&mut self) -> Option<Self::Item> {
match self.iter.next() {
Some(Ok(((fid, level, left, right), docids))) => {
let must_be_returned = match self.end {
Included(end) => right <= end,
Excluded(end) => right < end,
Unbounded => true,
};
if must_be_returned {
match docids.decode() {
Ok(docids) => Some(Ok(((fid, level, left, right), docids))),
Err(e) => Some(Err(e)),
}
} else {
None
}
}
Some(Err(e)) => Some(Err(e)),
None => None,
}
}
}
// // Compute the maximum end bound by looking at the key of the last element in level 0
// let mut prefix_level_0 = vec![];
// prefix_level_0.extend_from_slice(&field_id.to_be_bytes());
// prefix_level_0.push(level);
pub struct FacetNumberRevRange<'t> {
iter: RoRevRange<'t, FacetLevelValueF64Codec, LazyDecode<CboRoaringBitmapCodec>>,
end: Bound<f64>,
}
// let mut rev_iter =
// db.as_polymorph().rev_prefix_iter::<_, ByteSlice, ByteSlice>(rtxn, &prefix_level_0)?;
impl<'t> FacetNumberRevRange<'t> {
pub fn new(
rtxn: &'t heed::RoTxn,
db: Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
field_id: FieldId,
level: u8,
left: Bound<f64>,
right: Bound<f64>,
) -> heed::Result<FacetNumberRevRange<'t>> {
let left_bound = match left {
Included(left) => Included((field_id, level, left, f64::MIN)),
Excluded(left) => Excluded((field_id, level, left, f64::MIN)),
Unbounded => Included((field_id, level, f64::MIN, f64::MIN)),
};
let right_bound = Included((field_id, level, f64::MAX, f64::MAX));
let iter = db.lazily_decode_data().rev_range(rtxn, &(left_bound, right_bound))?;
Ok(FacetNumberRevRange { iter, end: right })
}
}
// let rev_iter_first = rev_iter.next().transpose()?;
// let max_bound = if let Some((max_bound_key, _)) = rev_iter_first {
// let max_bound_key =
// FacetKeyCodec::<OrderedF64Codec>::bytes_decode(max_bound_key).unwrap();
// max_bound_key.left_bound
// } else {
// // I can't imagine when that would happen, but let's handle it correctly anyway
// // by making the iterator empty
// previous = None;
// 0.0 // doesn't matter since previous = None so the iterator will always early exit
// // and return None itself
// };
impl<'t> Iterator for FacetNumberRevRange<'t> {
type Item = heed::Result<((FieldId, u8, f64, f64), RoaringBitmap)>;
// Ok(FacetNumberRange { rtxn, db, iter, field_id, previous, max_bound, end: right })
// }
// }
fn next(&mut self) -> Option<Self::Item> {
loop {
match self.iter.next() {
Some(Ok(((fid, level, left, right), docids))) => {
let must_be_returned = match self.end {
Included(end) => right <= end,
Excluded(end) => right < end,
Unbounded => true,
};
if must_be_returned {
match docids.decode() {
Ok(docids) => return Some(Ok(((fid, level, left, right), docids))),
Err(e) => return Some(Err(e)),
}
}
continue;
}
Some(Err(e)) => return Some(Err(e)),
None => return None,
}
}
}
}
// impl<'t, 'e> Iterator for FacetNumberRange<'t, 'e> {
// type Item = heed::Result<(FacetKey<f64>, RoaringBitmap)>;
pub struct FacetNumberIter<'t> {
rtxn: &'t heed::RoTxn<'t>,
db: Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
field_id: FieldId,
level_iters: Vec<(RoaringBitmap, Either<FacetNumberRange<'t>, FacetNumberRevRange<'t>>)>,
must_reduce: bool,
}
// fn next(&mut self) -> Option<Self::Item> {
// // The idea here is to return the **previous** element only if the left
// // bound of the current key fits within the range given to the iter
// // if it doesn't, then there is still a chance that it must be returned,
// // but we need to check the actual right bound of the group by looking for
// // the key preceding the first key of the next group in level 0
impl<'t> FacetNumberIter<'t> {
/// Create a `FacetNumberIter` that will iterate on the different facet entries
/// (facet value + documents ids) and that will reduce the given documents ids
/// while iterating on the different facet levels.
pub fn new_reducing(
rtxn: &'t heed::RoTxn,
index: &'t Index,
field_id: FieldId,
documents_ids: RoaringBitmap,
) -> heed::Result<FacetNumberIter<'t>> {
let db = index.facet_id_f64_docids.remap_key_type::<FacetLevelValueF64Codec>();
let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
let highest_iter =
FacetNumberRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
let level_iters = vec![(documents_ids, Left(highest_iter))];
Ok(FacetNumberIter { rtxn, db, field_id, level_iters, must_reduce: true })
}
// let (prev_key, prev_value) = self.previous?;
/// Create a `FacetNumberIter` that will iterate on the different facet entries in reverse
/// (facet value + documents ids) and that will reduce the given documents ids
/// while iterating on the different facet levels.
pub fn new_reverse_reducing(
rtxn: &'t heed::RoTxn,
index: &'t Index,
field_id: FieldId,
documents_ids: RoaringBitmap,
) -> heed::Result<FacetNumberIter<'t>> {
let db = index.facet_id_f64_docids;
let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
let highest_iter =
FacetNumberRevRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
let level_iters = vec![(documents_ids, Right(highest_iter))];
Ok(FacetNumberIter { rtxn, db, field_id, level_iters, must_reduce: true })
}
// let (next_left_bound, next_previous) = if let Some(next) = self.iter.next() {
// let (key, group_value) = match next {
// Ok(n) => n,
// Err(e) => return Some(Err(e)),
// };
// (key.left_bound, Some((key, group_value)))
// } else {
// // we're at the end of the level iter, so we need to fetch the max bound instead
// (self.max_bound, None)
// };
// let must_be_returned = match self.end {
// Included(end) => next_left_bound <= end,
// Excluded(end) => next_left_bound < end,
// Unbounded => true,
// };
// if must_be_returned {
// match prev_value.decode() {
// Ok(group_value) => {
// self.previous = next_previous;
// Some(Ok((prev_key, group_value.bitmap)))
// }
// Err(e) => Some(Err(e)),
// }
// } else {
// // it still possible that we want to return the value (one last time)
// // but to do so, we need to fetch the right bound of the current group
// // this is done by getting the first element at level 0 of the next group
// // then iterating in reverse from it
// // once we have the right bound, we can compare it, and then return or not
// // then we still set self.previous to None so that no other element can return
// // from it?
// let mut level_0_key_prefix = vec![];
// level_0_key_prefix.extend_from_slice(&self.field_id.to_be_bytes());
// level_0_key_prefix.push(0);
// let key =
// FacetKey::<f64> { field_id: self.field_id, level: 0, left_bound: next_left_bound };
// let key_bytes = FacetKeyCodec::<OrderedF64Codec>::bytes_encode(&key).unwrap();
// level_0_key_prefix.extend_from_slice(&key_bytes);
/// Create a `FacetNumberIter` that will iterate on the different facet entries
/// (facet value + documents ids) and that will not reduce the given documents ids
/// while iterating on the different facet levels, possibly returning multiple times
/// a document id associated with multiple facet values.
pub fn new_non_reducing(
rtxn: &'t heed::RoTxn,
index: &'t Index,
field_id: FieldId,
documents_ids: RoaringBitmap,
) -> heed::Result<FacetNumberIter<'t>> {
let db = index.facet_id_f64_docids.remap_key_type::<FacetLevelValueF64Codec>();
let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
let highest_iter =
FacetNumberRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
let level_iters = vec![(documents_ids, Left(highest_iter))];
Ok(FacetNumberIter { rtxn, db, field_id, level_iters, must_reduce: false })
}
// let mut rev_iter_next_group_level_0 = self
// .db
// .as_polymorph()
// .rev_prefix_iter::<_, ByteSlice, ByteSlice>(&self.rtxn, &level_0_key_prefix)
// .unwrap();
// let (key_for_right_bound, _) = rev_iter_next_group_level_0.next().unwrap().unwrap();
// let key_for_right_bound =
// FacetKeyCodec::<OrderedF64Codec>::bytes_decode(key_for_right_bound).unwrap();
// let right_bound = key_for_right_bound.left_bound;
// let must_be_returned = match self.end {
// Included(end) => right_bound <= end,
// Excluded(end) => right_bound < end,
// Unbounded => unreachable!(),
// };
// self.previous = None;
// if must_be_returned {
// match prev_value.decode() {
// Ok(group_value) => Some(Ok((prev_key, group_value.bitmap))),
// Err(e) => Some(Err(e)),
// }
// } else {
// None
// }
// }
// }
// }
fn highest_level<X>(
rtxn: &'t heed::RoTxn,
db: Database<FacetLevelValueF64Codec, X>,
fid: FieldId,
) -> heed::Result<Option<u8>> {
let level = db
.remap_types::<ByteSlice, DecodeIgnore>()
.prefix_iter(rtxn, &fid.to_be_bytes())?
.remap_key_type::<FacetLevelValueF64Codec>()
.last()
.transpose()?
.map(|((_, level, _, _), _)| level);
Ok(level)
}
}
// pub struct FacetNumberRevRange<'t> {
// iter: RoRevRange<'t, FacetKeyCodec<OrderedF64Codec>, LazyDecode<FacetGroupValueCodec>>,
// end: Bound<f64>,
// }
impl<'t> Iterator for FacetNumberIter<'t> {
type Item = heed::Result<(f64, RoaringBitmap)>;
// impl<'t> FacetNumberRevRange<'t> {
// pub fn new(
// rtxn: &'t heed::RoTxn,
// db: Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
// field_id: FieldId,
// level: u8,
// left: Bound<f64>,
// right: Bound<f64>,
// ) -> heed::Result<FacetNumberRevRange<'t>> {
// let left_bound = match left {
// Included(left) => Included(FacetKey { field_id, level, left_bound: left }),
// Excluded(left) => Excluded(FacetKey { field_id, level, left_bound: left }),
// Unbounded => Included(FacetKey { field_id, level, left_bound: f64::MIN }),
// };
// let right_bound = Included(FacetKey { field_id, level, left_bound: f64::MAX });
// let iter = db.lazily_decode_data().rev_range(rtxn, &(left_bound, right_bound))?;
// Ok(FacetNumberRevRange { iter, end: right })
// }
// }
fn next(&mut self) -> Option<Self::Item> {
'outer: loop {
let (documents_ids, last) = self.level_iters.last_mut()?;
let is_ascending = last.is_left();
for result in last {
// If the last iterator must find an empty set of documents it means
// that we found all the documents in the sub level iterations already,
// we can pop this level iterator.
if documents_ids.is_empty() {
break;
}
// impl<'t> Iterator for FacetNumberRevRange<'t> {
// type Item = heed::Result<(FacetKey<f64>, RoaringBitmap)>;
match result {
Ok(((_fid, level, left, right), mut docids)) => {
docids &= &*documents_ids;
if !docids.is_empty() {
if self.must_reduce {
*documents_ids -= &docids;
}
// fn next(&mut self) -> Option<Self::Item> {
// loop {
// match self.iter.next() {
// Some(Ok((FacetKey { field_id, level, left_bound }, docids))) => {
// let must_be_returned = match self.end {
// Included(end) => todo!(), //right <= end,
// Excluded(end) => todo!(), //right < end,
// Unbounded => true,
// };
// if must_be_returned {
// match docids.decode() {
// Ok(docids) => {
// return Some(Ok((
// FacetKey { field_id, level, left_bound },
// docids.bitmap,
// )))
// }
// Err(e) => return Some(Err(e)),
// }
// }
// continue;
// }
// Some(Err(e)) => return Some(Err(e)),
// None => return None,
// }
// }
// }
// }
if level == 0 {
return Some(Ok((left, docids)));
}
// pub struct FacetNumberIter<'t, 'e> {
// rtxn: &'t heed::RoTxn<'t>,
// db: Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
// field_id: FieldId,
// level_iters: Vec<(RoaringBitmap, Either<FacetNumberRange<'t, 'e>, FacetNumberRevRange<'t>>)>,
// must_reduce: bool,
// }
let rtxn = self.rtxn;
let db = self.db;
let fid = self.field_id;
let left = Included(left);
let right = Included(right);
// impl<'t, 'e> FacetNumberIter<'t, 'e> {
// /// Create a `FacetNumberIter` that will iterate on the different facet entries
// /// (facet value + documents ids) and that will reduce the given documents ids
// /// while iterating on the different facet levels.
// pub fn new_reducing(
// rtxn: &'t heed::RoTxn<'e>,
// index: &'t Index,
// field_id: FieldId,
// documents_ids: RoaringBitmap,
// ) -> heed::Result<FacetNumberIter<'t, 'e>> {
// let db = index.facet_id_f64_docids;
// let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
// let highest_iter =
// FacetNumberRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
// let level_iters = vec![(documents_ids, Left(highest_iter))];
// Ok(FacetNumberIter { rtxn, db, field_id, level_iters, must_reduce: true })
// }
let result = if is_ascending {
FacetNumberRange::new(rtxn, db, fid, level - 1, left, right)
.map(Left)
} else {
FacetNumberRevRange::new(rtxn, db, fid, level - 1, left, right)
.map(Right)
};
// /// Create a `FacetNumberIter` that will iterate on the different facet entries in reverse
// /// (facet value + documents ids) and that will reduce the given documents ids
// /// while iterating on the different facet levels.
// pub fn new_reverse_reducing(
// rtxn: &'t heed::RoTxn<'e>,
// index: &'t Index,
// field_id: FieldId,
// documents_ids: RoaringBitmap,
// ) -> heed::Result<FacetNumberIter<'t, 'e>> {
// let db = index.facet_id_f64_docids;
// let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
// let highest_iter =
// FacetNumberRevRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
// let level_iters = vec![(documents_ids, Right(highest_iter))];
// Ok(FacetNumberIter { rtxn, db, field_id, level_iters, must_reduce: true })
// }
match result {
Ok(iter) => {
self.level_iters.push((docids, iter));
continue 'outer;
}
Err(e) => return Some(Err(e)),
}
}
}
Err(e) => return Some(Err(e)),
}
}
self.level_iters.pop();
}
}
}
// /// Create a `FacetNumberIter` that will iterate on the different facet entries
// /// (facet value + documents ids) and that will not reduce the given documents ids
// /// while iterating on the different facet levels, possibly returning multiple times
// /// a document id associated with multiple facet values.
// pub fn new_non_reducing(
// rtxn: &'t heed::RoTxn<'e>,
// index: &'t Index,
// field_id: FieldId,
// documents_ids: RoaringBitmap,
// ) -> heed::Result<FacetNumberIter<'t, 'e>> {
// let db = index.facet_id_f64_docids;
// let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
// let highest_iter =
// FacetNumberRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
// let level_iters = vec![(documents_ids, Left(highest_iter))];
// Ok(FacetNumberIter { rtxn, db, field_id, level_iters, must_reduce: false })
// }
// fn highest_level<X>(
// rtxn: &'t heed::RoTxn,
// db: Database<FacetKeyCodec<OrderedF64Codec>, X>,
// fid: FieldId,
// ) -> heed::Result<Option<u8>> {
// let level = db
// .remap_types::<ByteSlice, DecodeIgnore>()
// .prefix_iter(rtxn, &fid.to_be_bytes())?
// .remap_key_type::<FacetKeyCodec<OrderedF64Codec>>()
// .last()
// .transpose()?
// .map(|(key, _)| key.level);
// Ok(level)
// }
// }
// impl<'t, 'e> Iterator for FacetNumberIter<'t, 'e> {
// type Item = heed::Result<(f64, RoaringBitmap)>;
// fn next(&mut self) -> Option<Self::Item> {
// 'outer: loop {
// let (documents_ids, last) = self.level_iters.last_mut()?;
// let is_ascending = last.is_left();
// for result in last {
// // If the last iterator must find an empty set of documents it means
// // that we found all the documents in the sub level iterations already,
// // we can pop this level iterator.
// if documents_ids.is_empty() {
// break;
// }
// match result {
// Ok((key, mut docids)) => {
// docids &= &*documents_ids;
// if !docids.is_empty() {
// if self.must_reduce {
// *documents_ids -= &docids;
// }
// if level == 0 {
// return Some(Ok((left, docids)));
// }
// let rtxn = self.rtxn;
// let db = self.db;
// let fid = self.field_id;
// let left = Included(left);
// let right = Included(right);
// let result = if is_ascending {
// FacetNumberRange::new(rtxn, db, fid, level - 1, left, right)
// .map(Left)
// } else {
// FacetNumberRevRange::new(rtxn, db, fid, level - 1, left, right)
// .map(Right)
// };
// match result {
// Ok(iter) => {
// self.level_iters.push((docids, iter));
// continue 'outer;
// }
// Err(e) => return Some(Err(e)),
// }
// }
// }
// Err(e) => return Some(Err(e)),
// }
// }
// self.level_iters.pop();
// }
// }
// }

1217
milli/src/search/facet/facet_string.rs
View File

File diff suppressed because it is too large Load Diff

268
milli/src/search/facet/filter.rs
View File

@ -1,16 +1,20 @@
use std::collections::HashSet;
use std::fmt::{Debug, Display};
use std::ops::Bound::{self, Excluded, Included};
use std::ops::RangeBounds;
use either::Either;
pub use filter_parser::{Condition, Error as FPError, FilterCondition, Span, Token};
use heed::types::DecodeIgnore;
use heed::LazyDecode;
use log::debug;
use roaring::RoaringBitmap;
use super::FacetNumberRange;
// use super::FacetNumberRange;
use crate::error::{Error, UserError};
use crate::heed_codec::facet::FacetLevelValueF64Codec;
use crate::heed_codec::facet::new::ordered_f64_codec::OrderedF64Codec;
use crate::heed_codec::facet::new::{FacetGroupValueCodec, FacetKey, FacetKeyCodec};
// use crate::heed_codec::facet::FacetLevelValueF64Codec;
use crate::{
distance_between_two_points, lat_lng_to_xyz, CboRoaringBitmapCodec, FieldId, Index, Result,
};
@ -144,18 +148,29 @@ impl<'a> Filter<'a> {
}
}
fn explore_facet_number_levels(
rtxn: &heed::RoTxn,
db: heed::Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
field_id: FieldId,
) {
}
impl<'a> Filter<'a> {
/// Aggregates the documents ids that are part of the specified range automatically
/// going deeper through the levels.
fn explore_facet_number_levels(
rtxn: &heed::RoTxn,
db: heed::Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
db: heed::Database<FacetKeyCodec<OrderedF64Codec>, CboRoaringBitmapCodec>,
field_id: FieldId,
level: u8,
left: Bound<f64>,
right: Bound<f64>,
output: &mut RoaringBitmap,
) -> Result<()> {
// level must be > 0, I'll create a separate function for level 0
// if level == 0 {
// call that function
//}
match (left, right) {
// If the request is an exact value we must go directly to the deepest level.
(Included(l), Included(r)) if l == r && level > 0 => {
@ -170,87 +185,121 @@ impl<'a> Filter<'a> {
(Excluded(l), Included(r)) if l >= r => return Ok(()),
(_, _) => (),
}
let mut left_found = None;
let mut right_found = None;
// We must create a custom iterator to be able to iterate over the
// requested range as the range iterator cannot express some conditions.
let iter = FacetNumberRange::new(rtxn, db, field_id, level, left, right)?;
debug!("Iterating between {:?} and {:?} (level {})", left, right, level);
for (i, result) in iter.enumerate() {
let ((_fid, level, l, r), docids) = result?;
debug!("{:?} to {:?} (level {}) found {} documents", l, r, level, docids.len());
*output |= docids;
// We save the leftest and rightest bounds we actually found at this level.
if i == 0 {
left_found = Some(l);
}
right_found = Some(r);
}
// Can we go deeper?
let deeper_level = match level.checked_sub(1) {
Some(level) => level,
None => return Ok(()),
let range_start_key = FacetKey {
field_id,
level,
left_bound: match left {
Included(l) => l,
Excluded(l) => l,
Bound::Unbounded => f64::MIN,
},
};
let mut range_iter = db
.remap_data_type::<LazyDecode<FacetGroupValueCodec>>()
.range(rtxn, &(range_start_key..))?;
// We must refine the left and right bounds of this range by retrieving the
// missing part in a deeper level.
match left_found.zip(right_found) {
Some((left_found, right_found)) => {
// If the bound is satisfied we avoid calling this function again.
if !matches!(left, Included(l) if l == left_found) {
let sub_right = Excluded(left_found);
debug!(
"calling left with {:?} to {:?} (level {})",
left, sub_right, deeper_level
);
Self::explore_facet_number_levels(
rtxn,
db,
field_id,
deeper_level,
left,
sub_right,
output,
)?;
}
if !matches!(right, Included(r) if r == right_found) {
let sub_left = Excluded(right_found);
debug!(
"calling right with {:?} to {:?} (level {})",
sub_left, right, deeper_level
);
Self::explore_facet_number_levels(
rtxn,
db,
field_id,
deeper_level,
sub_left,
right,
output,
)?;
}
}
None => {
// If we found nothing at this level it means that we must find
// the same bounds but at a deeper, more precise level.
Self::explore_facet_number_levels(
rtxn,
db,
field_id,
deeper_level,
left,
right,
output,
)?;
}
let (mut previous_facet_key, mut previous_value) = range_iter.next().unwrap()?;
while let Some(el) = range_iter.next() {
let (facet_key, value) = el?;
let range = (Included(previous_facet_key.left_bound), Excluded(facet_key.left_bound));
// if the current range intersects with the query range, then go deeper
// what does it mean for two ranges to intersect?
let gte_left = match left {
Included(l) => previous_facet_key.left_bound >= l,
Excluded(l) => previous_facet_key.left_bound > l, // TODO: not true?
Bound::Unbounded => true,
};
let lte_right = match right {
Included(r) => facet_key.left_bound <= r,
Excluded(r) => facet_key.left_bound < r,
Bound::Unbounded => true,
};
}
// at this point, previous_facet_key and previous_value are the last groups in the level
// we must also check whether we should visit this group
Ok(())
todo!();
// let mut left_found = None;
// let mut right_found = None;
// // We must create a custom iterator to be able to iterate over the
// // requested range as the range iterator cannot express some conditions.
// let iter = FacetNumberRange::new(rtxn, db, field_id, level, left, right)?;
// debug!("Iterating between {:?} and {:?} (level {})", left, right, level);
// for (i, result) in iter.enumerate() {
// let ((_fid, level, l, r), docids) = result?;
// debug!("{:?} to {:?} (level {}) found {} documents", l, r, level, docids.len());
// *output |= docids;
// // We save the leftest and rightest bounds we actually found at this level.
// if i == 0 {
// left_found = Some(l);
// }
// right_found = Some(r);
// }
// // Can we go deeper?
// let deeper_level = match level.checked_sub(1) {
// Some(level) => level,
// None => return Ok(()),
// };
// // We must refine the left and right bounds of this range by retrieving the
// // missing part in a deeper level.
// match left_found.zip(right_found) {
// Some((left_found, right_found)) => {
// // If the bound is satisfied we avoid calling this function again.
// if !matches!(left, Included(l) if l == left_found) {
// let sub_right = Excluded(left_found);
// debug!(
// "calling left with {:?} to {:?} (level {})",
// left, sub_right, deeper_level
// );
// Self::explore_facet_number_levels(
// rtxn,
// db,
// field_id,
// deeper_level,
// left,
// sub_right,
// output,
// )?;
// }
// if !matches!(right, Included(r) if r == right_found) {
// let sub_left = Excluded(right_found);
// debug!(
// "calling right with {:?} to {:?} (level {})",
// sub_left, right, deeper_level
// );
// Self::explore_facet_number_levels(
// rtxn,
// db,
// field_id,
// deeper_level,
// sub_left,
// right,
// output,
// )?;
// }
// }
// None => {
// // If we found nothing at this level it means that we must find
// // the same bounds but at a deeper, more precise level.
// Self::explore_facet_number_levels(
// rtxn,
// db,
// field_id,
// deeper_level,
// left,
// right,
// output,
// )?;
// }
// }
// Ok(())
}
fn evaluate_operator(
@ -277,23 +326,27 @@ impl<'a> Filter<'a> {
return Ok(exist);
}
Condition::Equal(val) => {
let (_original_value, string_docids) = strings_db
.get(rtxn, &(field_id, &val.value().to_lowercase()))?
let string_docids = strings_db
.get(
rtxn,
&FacetKey { field_id, level: 0, left_bound: &val.value().to_lowercase() },
)?
.map(|v| v.bitmap)
.unwrap_or_default();
let number = val.parse::<f64>().ok();
let number_docids = match number {
Some(n) => {
let n = Included(n);
let mut output = RoaringBitmap::new();
Self::explore_facet_number_levels(
rtxn,
numbers_db,
field_id,
0,
n,
n,
&mut output,
)?;
// Self::explore_facet_number_levels(
// rtxn,
// numbers_db,
// field_id,
// 0,
// n,
// n,
// &mut output,
// )?;
output
}
None => RoaringBitmap::new(),
@ -312,21 +365,32 @@ impl<'a> Filter<'a> {
// that's fine if it don't, the value just before will be returned instead.
let biggest_level = numbers_db
.remap_data_type::<DecodeIgnore>()
.get_lower_than_or_equal_to(rtxn, &(field_id, u8::MAX, f64::MAX, f64::MAX))?
.and_then(|((id, level, _, _), _)| if id == field_id { Some(level) } else { None });
.get_lower_than_or_equal_to(
rtxn,
&FacetKey { field_id, level: u8::MAX, left_bound: f64::MAX },
)?
.and_then(
|(FacetKey { field_id: id, level, .. }, _)| {
if id == field_id {
Some(level)
} else {
None
}
},
);
match biggest_level {
Some(level) => {
let mut output = RoaringBitmap::new();
Self::explore_facet_number_levels(
rtxn,
numbers_db,
field_id,
level,
left,
right,
&mut output,
)?;
// Self::explore_facet_number_levels(
// rtxn,
// numbers_db,
// field_id,
// level,
// left,
// right,
// &mut output,
// )?;
Ok(output)
}
None => Ok(RoaringBitmap::new()),

4
milli/src/search/facet/mod.rs
View File

@ -1,6 +1,6 @@
pub use self::facet_distribution::{FacetDistribution, DEFAULT_VALUES_PER_FACET};
pub use self::facet_number::{FacetNumberIter, FacetNumberRange, FacetNumberRevRange};
pub use self::facet_string::FacetStringIter;
// pub use self::facet_number::{FacetNumberIter, FacetNumberRange, FacetNumberRevRange};
// pub use self::facet_string::FacetStringIter;
pub use self::filter::Filter;
mod facet_distribution;

2
milli/src/search/mod.rs
View File

@ -15,7 +15,7 @@ use log::debug;
use once_cell::sync::Lazy;
use roaring::bitmap::RoaringBitmap;
pub use self::facet::{FacetDistribution, FacetNumberIter, Filter, DEFAULT_VALUES_PER_FACET};
pub use self::facet::{FacetDistribution, /* FacetNumberIter,*/ Filter, DEFAULT_VALUES_PER_FACET,};
use self::fst_utils::{Complement, Intersection, StartsWith, Union};
pub use self::matches::{
FormatOptions, MatchBounds, Matcher, MatcherBuilder, MatchingWord, MatchingWords,

81
milli/src/snapshot_tests.rs
View File

@ -6,10 +6,7 @@ use heed::types::ByteSlice;
use heed::BytesDecode;
use roaring::RoaringBitmap;
use crate::heed_codec::facet::{
FacetLevelValueU32Codec, FacetStringLevelZeroCodec, FacetStringLevelZeroValueCodec,
FacetStringZeroBoundsValueCodec,
};
use crate::heed_codec::facet::FacetStringZeroBoundsValueCodec;
use crate::{make_db_snap_from_iter, CboRoaringBitmapCodec, ExternalDocumentsIds, Index};
#[track_caller]
@ -232,46 +229,48 @@ pub fn snap_word_prefix_position_docids(index: &Index) -> String {
snap
}
pub fn snap_facet_id_f64_docids(index: &Index) -> String {
let snap = make_db_snap_from_iter!(index, facet_id_f64_docids, |(
(facet_id, level, left, right),
b,
)| {
&format!("{facet_id:<3} {level:<2} {left:<6} {right:<6} {}", display_bitmap(&b))
});
snap
todo!()
// let snap = make_db_snap_from_iter!(index, facet_id_f64_docids, |(
// (facet_id, level, left, right),
// b,
// )| {
// &format!("{facet_id:<3} {level:<2} {left:<6} {right:<6} {}", display_bitmap(&b))
// });
// snap
}
pub fn snap_facet_id_string_docids(index: &Index) -> String {
let rtxn = index.read_txn().unwrap();
let bytes_db = index.facet_id_string_docids.remap_types::<ByteSlice, ByteSlice>();
let iter = bytes_db.iter(&rtxn).unwrap();
let mut snap = String::new();
todo!()
// let rtxn = index.read_txn().unwrap();
// let bytes_db = index.facet_id_string_docids.remap_types::<ByteSlice, ByteSlice>();
// let iter = bytes_db.iter(&rtxn).unwrap();
// let mut snap = String::new();
for x in iter {
let (key, value) = x.unwrap();
if let Some((field_id, normalized_str)) = FacetStringLevelZeroCodec::bytes_decode(key) {
let (orig_string, docids) =
FacetStringLevelZeroValueCodec::bytes_decode(value).unwrap();
snap.push_str(&format!(
"{field_id:<3} {normalized_str:<8} {orig_string:<8} {}\n",
display_bitmap(&docids)
));
} else if let Some((field_id, level, left, right)) =
FacetLevelValueU32Codec::bytes_decode(key)
{
snap.push_str(&format!("{field_id:<3} {level:<2} {left:<6} {right:<6} "));
let (bounds, docids) =
FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_decode(value)
.unwrap();
if let Some((left, right)) = bounds {
snap.push_str(&format!("{left:<8} {right:<8} "));
}
snap.push_str(&display_bitmap(&docids));
snap.push('\n');
} else {
panic!();
}
}
snap
// for x in iter {
// let (key, value) = x.unwrap();
// if let Some((field_id, normalized_str)) = FacetStringLevelZeroCodec::bytes_decode(key) {
// let (orig_string, docids) =
// FacetStringLevelZeroValueCodec::bytes_decode(value).unwrap();
// snap.push_str(&format!(
// "{field_id:<3} {normalized_str:<8} {orig_string:<8} {}\n",
// display_bitmap(&docids)
// ));
// } else if let Some((field_id, level, left, right)) =
// FacetLevelValueU32Codec::bytes_decode(key)
// {
// snap.push_str(&format!("{field_id:<3} {level:<2} {left:<6} {right:<6} "));
// let (bounds, docids) =
// FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_decode(value)
// .unwrap();
// if let Some((left, right)) = bounds {
// snap.push_str(&format!("{left:<8} {right:<8} "));
// }
// snap.push_str(&display_bitmap(&docids));
// snap.push('\n');
// } else {
// panic!();
// }
// }
// snap
}
pub fn snap_documents_ids(index: &Index) -> String {
let rtxn = index.read_txn().unwrap();

108
milli/src/update/delete_documents.rs
View File

@ -10,9 +10,7 @@ use time::OffsetDateTime;
use super::ClearDocuments;
use crate::error::{InternalError, SerializationError, UserError};
use crate::heed_codec::facet::{
FacetLevelValueU32Codec, FacetStringLevelZeroValueCodec, FacetStringZeroBoundsValueCodec,
};
use crate::heed_codec::facet::FacetStringZeroBoundsValueCodec;
use crate::heed_codec::CboRoaringBitmapCodec;
use crate::index::{db_name, main_key};
use crate::{
@ -442,11 +440,11 @@ impl<'t, 'u, 'i> DeleteDocuments<'t, 'u, 'i> {
}
// We delete the documents ids that are under the facet field id values.
remove_docids_from_facet_field_id_docids(
self.wtxn,
facet_id_f64_docids,
&self.to_delete_docids,
)?;
// TODO: remove_docids_from_facet_field_id_docids(
// self.wtxn,
// facet_id_f64_docids,
// &self.to_delete_docids,
// )?;
// We delete the documents ids that are under the facet field id values.
remove_docids_from_facet_field_id_docids(
self.wtxn,
@ -587,57 +585,57 @@ fn remove_docids_from_facet_field_id_string_docids<'a, C, D>(
db: &heed::Database<C, D>,
to_remove: &RoaringBitmap,
) -> crate::Result<()> {
let db_name = Some(crate::index::db_name::FACET_ID_STRING_DOCIDS);
let mut iter = db.remap_types::<ByteSlice, ByteSlice>().iter_mut(wtxn)?;
while let Some(result) = iter.next() {
let (key, val) = result?;
match FacetLevelValueU32Codec::bytes_decode(key) {
Some(_) => {
// If we are able to parse this key it means it is a facet string group
// level key. We must then parse the value using the appropriate codec.
let (group, mut docids) =
FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_decode(val)
.ok_or_else(|| SerializationError::Decoding { db_name })?;
// let db_name = Some(crate::index::db_name::FACET_ID_STRING_DOCIDS);
// let mut iter = db.remap_types::<ByteSlice, ByteSlice>().iter_mut(wtxn)?;
// while let Some(result) = iter.next() {
// let (key, val) = result?;
// match FacetLevelValueU32Codec::bytes_decode(key) {
// Some(_) => {
// // If we are able to parse this key it means it is a facet string group
// // level key. We must then parse the value using the appropriate codec.
// let (group, mut docids) =
// FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_decode(val)
// .ok_or_else(|| SerializationError::Decoding { db_name })?;
let previous_len = docids.len();
docids -= to_remove;
if docids.is_empty() {
// safety: we don't keep references from inside the LMDB database.
unsafe { iter.del_current()? };
} else if docids.len() != previous_len {
let key = key.to_owned();
let val = &(group, docids);
let value_bytes =
FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_encode(val)
.ok_or_else(|| SerializationError::Encoding { db_name })?;
// let previous_len = docids.len();
// docids -= to_remove;
// if docids.is_empty() {
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.del_current()? };
// } else if docids.len() != previous_len {
// let key = key.to_owned();
// let val = &(group, docids);
// let value_bytes =
// FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_encode(val)
// .ok_or_else(|| SerializationError::Encoding { db_name })?;
// safety: we don't keep references from inside the LMDB database.
unsafe { iter.put_current(&key, &value_bytes)? };
}
}
None => {
// The key corresponds to a level zero facet string.
let (original_value, mut docids) =
FacetStringLevelZeroValueCodec::bytes_decode(val)
.ok_or_else(|| SerializationError::Decoding { db_name })?;
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.put_current(&key, &value_bytes)? };
// }
// }
// None => {
// // The key corresponds to a level zero facet string.
// let (original_value, mut docids) =
// FacetStringLevelZeroValueCodec::bytes_decode(val)
// .ok_or_else(|| SerializationError::Decoding { db_name })?;
let previous_len = docids.len();
docids -= to_remove;
if docids.is_empty() {
// safety: we don't keep references from inside the LMDB database.
unsafe { iter.del_current()? };
} else if docids.len() != previous_len {
let key = key.to_owned();
let val = &(original_value, docids);
let value_bytes = FacetStringLevelZeroValueCodec::bytes_encode(val)
.ok_or_else(|| SerializationError::Encoding { db_name })?;
// let previous_len = docids.len();
// docids -= to_remove;
// if docids.is_empty() {
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.del_current()? };
// } else if docids.len() != previous_len {
// let key = key.to_owned();
// let val = &(original_value, docids);
// let value_bytes = FacetStringLevelZeroValueCodec::bytes_encode(val)
// .ok_or_else(|| SerializationError::Encoding { db_name })?;
// safety: we don't keep references from inside the LMDB database.
unsafe { iter.put_current(&key, &value_bytes)? };
}
}
}
}
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.put_current(&key, &value_bytes)? };
// }
// }
// }
// }
Ok(())
}

231
milli/src/update/facets.rs
View File

@ -136,11 +136,12 @@ use roaring::RoaringBitmap;
use time::OffsetDateTime;
use crate::error::InternalError;
use crate::heed_codec::facet::{
FacetLevelValueF64Codec, FacetLevelValueU32Codec, FacetStringLevelZeroCodec,
FacetStringLevelZeroValueCodec, FacetStringZeroBoundsValueCodec,
use crate::heed_codec::facet::new::ordered_f64_codec::OrderedF64Codec;
use crate::heed_codec::facet::new::str_ref::StrRefCodec;
use crate::heed_codec::facet::new::{
FacetGroupValue, FacetGroupValueCodec, FacetKey, FacetKeyCodec,
};
use crate::heed_codec::CboRoaringBitmapCodec;
// use crate::heed_codec::CboRoaringBitmapCodec;
use crate::update::index_documents::{create_writer, write_into_lmdb_database, writer_into_reader};
use crate::{FieldId, Index, Result};
@ -187,16 +188,18 @@ impl<'t, 'u, 'i> Facets<'t, 'u, 'i> {
debug!("Computing and writing the facet values levels docids into LMDB on disk...");
let mut nested_wtxn = self.index.env.nested_write_txn(self.wtxn).unwrap();
for field_id in faceted_fields {
// Clear the facet string levels.
clear_field_string_levels(
self.wtxn,
self.index.facet_id_string_docids.remap_types::<ByteSlice, DecodeIgnore>(),
field_id,
)?;
// clear_field_string_levels(
// &mut nested_wtxn,
// self.index.facet_id_string_docids.remap_types::<ByteSlice, DecodeIgnore>(),
// field_id,
// )?;
let (facet_string_levels, string_documents_ids) = compute_facet_strings_levels(
self.wtxn,
&mut nested_wtxn,
self.index.facet_id_string_docids,
self.chunk_compression_type,
self.chunk_compression_level,
@ -206,13 +209,13 @@ impl<'t, 'u, 'i> Facets<'t, 'u, 'i> {
)?;
self.index.put_string_faceted_documents_ids(
self.wtxn,
&mut nested_wtxn,
field_id,
&string_documents_ids,
)?;
for facet_strings_level in facet_string_levels {
write_into_lmdb_database(
self.wtxn,
&mut nested_wtxn,
*self.index.facet_id_string_docids.as_polymorph(),
facet_strings_level,
|_, _| {
@ -221,11 +224,11 @@ impl<'t, 'u, 'i> Facets<'t, 'u, 'i> {
)?;
}
// Clear the facet number levels.
clear_field_number_levels(self.wtxn, self.index.facet_id_f64_docids, field_id)?;
// // Clear the facet number levels.
// clear_field_number_levels(&mut nested_wtxn, self.index.facet_id_f64_docids, field_id)?;
let (facet_number_levels, number_documents_ids) = compute_facet_number_levels(
self.wtxn,
&mut nested_wtxn,
self.index.facet_id_f64_docids,
self.chunk_compression_type,
self.chunk_compression_level,
@ -235,14 +238,14 @@ impl<'t, 'u, 'i> Facets<'t, 'u, 'i> {
)?;
self.index.put_number_faceted_documents_ids(
self.wtxn,
&mut nested_wtxn,
field_id,
&number_documents_ids,
)?;
for facet_number_level in facet_number_levels {
write_into_lmdb_database(
self.wtxn,
&mut nested_wtxn,
*self.index.facet_id_f64_docids.as_polymorph(),
facet_number_level,
|_, _| {
@ -263,8 +266,8 @@ impl<'t, 'u, 'i> Facets<'t, 'u, 'i> {
/// that must be inserted into the database.
/// 2. a roaring bitmap of all the document ids present in the database
fn compute_facet_number_levels<'t>(
rtxn: &'t heed::RoTxn,
db: heed::Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
rtxn: &'t mut heed::RwTxn,
db: heed::Database<FacetKeyCodec<OrderedF64Codec>, FacetGroupValueCodec>,
compression_type: CompressionType,
compression_level: Option<u32>,
level_group_size: NonZeroUsize,
@ -277,7 +280,7 @@ fn compute_facet_number_levels<'t>(
.remap_types::<DecodeIgnore, DecodeIgnore>()
.fold(Ok(0usize), |count, result| result.and(count).map(|c| c + 1))?;
let level_0_start = (field_id, 0, f64::MIN, f64::MIN);
let level_0_start = FacetKey { field_id, level: 0, left_bound: f64::MIN };
// Groups sizes are always a power of the original level_group_size and therefore a group
// always maps groups of the previous level and never splits previous levels groups in half.
@ -289,37 +292,31 @@ fn compute_facet_number_levels<'t>(
let mut number_document_ids = RoaringBitmap::new();
if let Some((top_level, _)) = group_size_iter.last() {
let subwriters =
recursive_compute_levels::<FacetLevelValueF64Codec, CboRoaringBitmapCodec, f64>(
let subwriters = recursive_compute_levels::<OrderedF64Codec>(
rtxn,
db,
compression_type,
compression_level,
field_id,
*top_level,
level_0_start,
&(level_0_start..),
first_level_size,
level_group_size,
&mut |bitmaps, _, _| {
&mut |bitmaps, _| {
for bitmap in bitmaps {
number_document_ids |= bitmap;
}
Ok(())
},
&|_i, (_field_id, _level, left, _right)| *left,
&|bitmap| bitmap,
&|writer, level, left, right, docids| {
write_number_entry(writer, field_id, level.get(), left, right, &docids)?;
Ok(())
},
)?;
Ok((subwriters, number_document_ids))
} else {
let mut documents_ids = RoaringBitmap::new();
for result in db.range(rtxn, &(level_0_start..))?.take(first_level_size) {
let (_key, docids) = result?;
documents_ids |= docids;
let (_key, group_value) = result?;
documents_ids |= group_value.bitmap;
}
Ok((vec![], documents_ids))
@ -333,8 +330,8 @@ fn compute_facet_number_levels<'t>(
/// that must be inserted into the database.
/// 2. a roaring bitmap of all the document ids present in the database
fn compute_facet_strings_levels<'t>(
rtxn: &'t heed::RoTxn,
db: heed::Database<FacetStringLevelZeroCodec, FacetStringLevelZeroValueCodec>,
rtxn: &'t mut heed::RwTxn,
db: heed::Database<FacetKeyCodec<StrRefCodec>, FacetGroupValueCodec>,
compression_type: CompressionType,
compression_level: Option<u32>,
level_group_size: NonZeroUsize,
@ -347,7 +344,7 @@ fn compute_facet_strings_levels<'t>(
.remap_types::<DecodeIgnore, DecodeIgnore>()
.fold(Ok(0usize), |count, result| result.and(count).map(|c| c + 1))?;
let level_0_start = (field_id, "");
let level_0_start = FacetKey { field_id, level: 0, left_bound: "" };
// Groups sizes are always a power of the original level_group_size and therefore a group
// always maps groups of the previous level and never splits previous levels groups in half.
@ -359,40 +356,31 @@ fn compute_facet_strings_levels<'t>(
let mut strings_document_ids = RoaringBitmap::new();
if let Some((top_level, _)) = group_size_iter.last() {
let subwriters = recursive_compute_levels::<
FacetStringLevelZeroCodec,
FacetStringLevelZeroValueCodec,
(u32, &str),
>(
let subwriters = recursive_compute_levels::<StrRefCodec>(
rtxn,
db,
compression_type,
compression_level,
field_id,
*top_level,
level_0_start,
&(level_0_start..),
first_level_size,
level_group_size,
&mut |bitmaps, _, _| {
&mut |bitmaps, _| {
for bitmap in bitmaps {
strings_document_ids |= bitmap;
}
Ok(())
},
&|i, (_field_id, value)| (i as u32, *value),
&|value| value.1,
&|writer, level, start_bound, end_bound, docids| {
write_string_entry(writer, field_id, level, start_bound, end_bound, docids)?;
Ok(())
},
)?;
Ok((subwriters, strings_document_ids))
} else {
let mut documents_ids = RoaringBitmap::new();
for result in db.range(rtxn, &(level_0_start..))?.take(first_level_size) {
let (_key, (_original_value, docids)) = result?;
documents_ids |= docids;
let (_key, group_value) = result?;
documents_ids |= group_value.bitmap;
}
Ok((vec![], documents_ids))
@ -436,29 +424,26 @@ from the level below were read/created. Its arguments are:
A vector of grenad::Reader. The reader at index `i` corresponds to the elements of level `i + 1`
that must be inserted into the database.
*/
fn recursive_compute_levels<'t, KeyCodec, ValueCodec, Bound>(
rtxn: &'t heed::RoTxn,
db: heed::Database<KeyCodec, ValueCodec>,
fn recursive_compute_levels<'t, BoundCodec>(
rtxn: &'t mut heed::RwTxn,
db: heed::Database<FacetKeyCodec<BoundCodec>, FacetGroupValueCodec>,
compression_type: CompressionType,
compression_level: Option<u32>,
field_id: FieldId,
level: u8,
level_0_start: <KeyCodec as BytesDecode<'t>>::DItem,
level_0_range: &'t RangeFrom<<KeyCodec as BytesDecode<'t>>::DItem>,
level_0_start: FacetKey<<BoundCodec as BytesEncode<'t>>::EItem>,
level_0_range: &'t RangeFrom<FacetKey<<BoundCodec as BytesEncode<'t>>::EItem>>,
level_0_size: usize,
level_group_size: NonZeroUsize,
computed_group_bitmap: &mut dyn FnMut(&[RoaringBitmap], Bound, Bound) -> Result<()>,
bound_from_db_key: &dyn for<'a> Fn(usize, &'a <KeyCodec as BytesDecode<'t>>::DItem) -> Bound,
bitmap_from_db_value: &dyn Fn(<ValueCodec as BytesDecode<'t>>::DItem) -> RoaringBitmap,
write_entry: &dyn Fn(&mut Writer<File>, NonZeroU8, Bound, Bound, RoaringBitmap) -> Result<()>,
computed_group_bitmap: &mut dyn FnMut(
&[RoaringBitmap],
<BoundCodec as BytesEncode<'t>>::EItem,
) -> Result<()>,
) -> Result<Vec<Reader<File>>>
where
KeyCodec: for<'a> BytesEncode<'a>
+ for<'a> BytesDecode<'a, DItem = <KeyCodec as BytesEncode<'a>>::EItem>,
for<'a> <KeyCodec as BytesEncode<'a>>::EItem: Sized,
ValueCodec: for<'a> BytesEncode<'a>
+ for<'a> BytesDecode<'a, DItem = <ValueCodec as BytesEncode<'a>>::EItem>,
for<'a> <ValueCodec as BytesEncode<'a>>::EItem: Sized,
Bound: Copy,
for<'a> BoundCodec:
BytesEncode<'a> + BytesDecode<'a, DItem = <BoundCodec as BytesEncode<'a>>::EItem>,
for<'a> <BoundCodec as BytesEncode<'a>>::EItem: Copy + Sized,
{
if level == 0 {
// base case for the recursion
@ -468,31 +453,32 @@ where
// 2. fill the `bitmaps` vector to give it to level 1 once `level_group_size` elements were read
let mut bitmaps = vec![];
let mut start_bound = bound_from_db_key(0, &level_0_start);
let mut end_bound = bound_from_db_key(0, &level_0_start);
let mut start_bound = level_0_start.left_bound;
// let mut end_bound = level_0_start.bound;
let mut first_iteration_for_new_group = true;
for (i, db_result_item) in db.range(rtxn, level_0_range)?.take(level_0_size).enumerate() {
let (key, value) = db_result_item?;
let bound = bound_from_db_key(i, &key);
let docids = bitmap_from_db_value(value);
let bound = key.left_bound;
let docids = value.bitmap;
if first_iteration_for_new_group {
start_bound = bound;
first_iteration_for_new_group = false;
}
end_bound = bound;
// end_bound = bound;
bitmaps.push(docids);
if bitmaps.len() == level_group_size.get() {
computed_group_bitmap(&bitmaps, start_bound, end_bound)?;
computed_group_bitmap(&bitmaps, start_bound)?;
first_iteration_for_new_group = true;
bitmaps.clear();
}
}
// don't forget to give the leftover bitmaps as well
if !bitmaps.is_empty() {
computed_group_bitmap(&bitmaps, start_bound, end_bound)?;
computed_group_bitmap(&bitmaps, start_bound)?;
bitmaps.clear();
}
// level 0 is already stored in the DB
@ -516,48 +502,52 @@ where
db,
compression_type,
compression_level,
field_id,
level - 1,
level_0_start,
level_0_range,
level_0_size,
level_group_size,
&mut |sub_bitmaps: &[RoaringBitmap], start_range, end_range| {
&mut |sub_bitmaps: &[RoaringBitmap],
start_range: <BoundCodec as BytesEncode<'t>>::EItem| {
let mut combined_bitmap = RoaringBitmap::default();
for bitmap in sub_bitmaps {
combined_bitmap |= bitmap;
}
range_for_bitmaps.push((start_range, end_range));
range_for_bitmaps.push(start_range);
bitmaps.push(combined_bitmap);
if bitmaps.len() == level_group_size.get() {
let start_bound = range_for_bitmaps.first().unwrap().0;
let end_bound = range_for_bitmaps.last().unwrap().1;
computed_group_bitmap(&bitmaps, start_bound, end_bound)?;
for (bitmap, (start_bound, end_bound)) in
bitmaps.drain(..).zip(range_for_bitmaps.drain(..))
let start_bound = range_for_bitmaps.first().unwrap();
computed_group_bitmap(&bitmaps, *start_bound)?;
for (bitmap, start_bound) in bitmaps.drain(..).zip(range_for_bitmaps.drain(..))
{
write_entry(
write_entry::<BoundCodec>(
&mut cur_writer,
field_id,
NonZeroU8::new(level).unwrap(),
start_bound,
end_bound,
bitmap,
)?;
}
}
Ok(())
},
bound_from_db_key,
bitmap_from_db_value,
write_entry,
)?;
// don't forget to insert the leftover elements into the writer as well
if !bitmaps.is_empty() {
let start_range = range_for_bitmaps.first().unwrap().0;
let end_range = range_for_bitmaps.last().unwrap().1;
computed_group_bitmap(&bitmaps, start_range, end_range)?;
for (bitmap, (left, right)) in bitmaps.drain(..).zip(range_for_bitmaps.drain(..)) {
write_entry(&mut cur_writer, NonZeroU8::new(level).unwrap(), left, right, bitmap)?;
let start_range = range_for_bitmaps.first().unwrap();
let end_range = range_for_bitmaps.last().unwrap();
computed_group_bitmap(&bitmaps, *start_range)?;
for (bitmap, bound) in bitmaps.drain(..).zip(range_for_bitmaps.drain(..)) {
write_entry(
&mut cur_writer,
field_id,
NonZeroU8::new(level).unwrap(),
bound,
bitmap,
)?;
}
}
@ -566,60 +556,25 @@ where
}
}
fn clear_field_number_levels<'t>(
wtxn: &'t mut heed::RwTxn,
db: heed::Database<FacetLevelValueF64Codec, CboRoaringBitmapCodec>,
field_id: FieldId,
) -> heed::Result<()> {
let left = (field_id, 1, f64::MIN, f64::MIN);
let right = (field_id, u8::MAX, f64::MAX, f64::MAX);
let range = left..=right;
db.delete_range(wtxn, &range).map(drop)
}
fn clear_field_string_levels<'t>(
wtxn: &'t mut heed::RwTxn,
db: heed::Database<ByteSlice, DecodeIgnore>,
field_id: FieldId,
) -> heed::Result<()> {
let left = (field_id, NonZeroU8::new(1).unwrap(), u32::MIN, u32::MIN);
let right = (field_id, NonZeroU8::new(u8::MAX).unwrap(), u32::MAX, u32::MAX);
let range = left..=right;
db.remap_key_type::<FacetLevelValueU32Codec>().delete_range(wtxn, &range).map(drop)
}
fn write_number_entry(
writer: &mut Writer<File>,
field_id: FieldId,
level: u8,
left: f64,
right: f64,
ids: &RoaringBitmap,
) -> Result<()> {
let key = (field_id, level, left, right);
let key = FacetLevelValueF64Codec::bytes_encode(&key).ok_or(Error::Encoding)?;
let data = CboRoaringBitmapCodec::bytes_encode(&ids).ok_or(Error::Encoding)?;
writer.insert(&key, &data)?;
Ok(())
}
fn write_string_entry(
fn write_entry<BoundCodec>(
writer: &mut Writer<File>,
field_id: FieldId,
level: NonZeroU8,
(left_id, left_value): (u32, &str),
(right_id, right_value): (u32, &str),
bound: <BoundCodec as BytesEncode<'_>>::EItem,
docids: RoaringBitmap,
) -> Result<()> {
let key = (field_id, level, left_id, right_id);
let key = FacetLevelValueU32Codec::bytes_encode(&key).ok_or(Error::Encoding)?;
let data = match level.get() {
1 => (Some((left_value, right_value)), docids),
_ => (None, docids),
};
let data = FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_encode(&data)
.ok_or(Error::Encoding)?;
writer.insert(&key, &data)?;
Ok(())
) -> Result<()>
where
for<'a> BoundCodec: BytesEncode<'a>,
for<'a> <BoundCodec as BytesEncode<'a>>::EItem: Copy + Sized,
{
todo!()
// let key = FacetKey { field_id, level: level.get(), left_bound: bound };
// let key_bytes = FacetKeyCodec::<BoundCodec>::bytes_encode(&key).ok_or(Error::Encoding)?;
// let value_bytes =
// FacetGroupValueCodec::bytes_encode(&FacetGroupValue { size: 4, bitmap: docids })
// .ok_or(Error::Encoding)?;
// writer.insert(&key_bytes, &value_bytes)?;
// Ok(())
}
#[cfg(test)]

13
milli/src/update/index_documents/extract/extract_facet_number_docids.rs
View File

@ -6,7 +6,7 @@ use heed::{BytesDecode, BytesEncode};
use super::helpers::{
create_sorter, merge_cbo_roaring_bitmaps, sorter_into_reader, GrenadParameters,
};
use crate::heed_codec::facet::{FacetLevelValueF64Codec, FieldDocIdFacetF64Codec};
use crate::heed_codec::facet::FieldDocIdFacetF64Codec;
use crate::Result;
/// Extracts the facet number and the documents ids where this facet number appear.
@ -31,13 +31,14 @@ pub fn extract_facet_number_docids<R: io::Read + io::Seek>(
let mut cursor = docid_fid_facet_number.into_cursor()?;
while let Some((key_bytes, _)) = cursor.move_on_next()? {
let (field_id, document_id, number) =
FieldDocIdFacetF64Codec::bytes_decode(key_bytes).unwrap();
todo!()
// let (field_id, document_id, number) =
// FieldDocIdFacetF64Codec::bytes_decode(key_bytes).unwrap();
let key = (field_id, 0, number, number);
let key_bytes = FacetLevelValueF64Codec::bytes_encode(&key).unwrap();
// let key = (field_id, 0, number, number);
// // let key_bytes = FacetLevelValueF64Codec::bytes_encode(&key).unwrap();
facet_number_docids_sorter.insert(key_bytes, document_id.to_ne_bytes())?;
// facet_number_docids_sorter.insert(key_bytes, document_id.to_ne_bytes())?;
}
sorter_into_reader(facet_number_docids_sorter, indexer)

24
milli/src/update/index_documents/extract/extract_facet_string_docids.rs
View File

@ -4,11 +4,9 @@ use std::{io, str};
use roaring::RoaringBitmap;
use super::helpers::{
create_sorter, keep_first_prefix_value_merge_roaring_bitmaps, sorter_into_reader,
try_split_array_at, GrenadParameters,
};
use crate::heed_codec::facet::{encode_prefix_string, FacetStringLevelZeroCodec};
use super::helpers::{create_sorter, sorter_into_reader, try_split_array_at, GrenadParameters};
use crate::update::index_documents::merge_cbo_roaring_bitmaps;
// use crate::heed_codec::facet::{encode_prefix_string, FacetStringLevelZeroCodec};
use crate::{FieldId, Result};
/// Extracts the facet string and the documents ids where this facet string appear.
@ -24,7 +22,7 @@ pub fn extract_facet_string_docids<R: io::Read + io::Seek>(
let mut facet_string_docids_sorter = create_sorter(
grenad::SortAlgorithm::Stable,
keep_first_prefix_value_merge_roaring_bitmaps,
merge_cbo_roaring_bitmaps, // TODO: check
indexer.chunk_compression_type,
indexer.chunk_compression_level,
indexer.max_nb_chunks,
@ -42,14 +40,16 @@ pub fn extract_facet_string_docids<R: io::Read + io::Seek>(
let original_value = str::from_utf8(original_value_bytes)?;
key_buffer.clear();
FacetStringLevelZeroCodec::serialize_into(
field_id,
str::from_utf8(normalized_value_bytes)?,
&mut key_buffer,
);
// TODO
// FacetStringLevelZeroCodec::serialize_into(
// field_id,
// str::from_utf8(normalized_value_bytes)?,
// &mut key_buffer,
// );
value_buffer.clear();
encode_prefix_string(original_value, &mut value_buffer)?;
// TODO
// encode_prefix_string(original_value, &mut value_buffer)?;
let bitmap = RoaringBitmap::from_iter(Some(document_id));
bitmap.serialize_into(&mut value_buffer)?;

6
milli/src/update/index_documents/extract/mod.rs
View File

@ -25,8 +25,8 @@ use self::extract_word_docids::extract_word_docids;
use self::extract_word_pair_proximity_docids::extract_word_pair_proximity_docids;
use self::extract_word_position_docids::extract_word_position_docids;
use super::helpers::{
as_cloneable_grenad, keep_first_prefix_value_merge_roaring_bitmaps, merge_cbo_roaring_bitmaps,
merge_roaring_bitmaps, CursorClonableMmap, GrenadParameters, MergeFn, MergeableReader,
as_cloneable_grenad, merge_cbo_roaring_bitmaps, merge_roaring_bitmaps, CursorClonableMmap,
GrenadParameters, MergeFn, MergeableReader,
};
use super::{helpers, TypedChunk};
use crate::{FieldId, Result};
@ -142,7 +142,7 @@ pub(crate) fn data_from_obkv_documents(
indexer,
lmdb_writer_sx.clone(),
extract_facet_string_docids,
keep_first_prefix_value_merge_roaring_bitmaps,
merge_roaring_bitmaps, // TODO: check (cbo?)
TypedChunk::FieldIdFacetStringDocids,
"field-id-facet-string-docids",
);

52
milli/src/update/index_documents/helpers/merge_functions.rs
View File

@ -5,7 +5,7 @@ use std::result::Result as StdResult;
use roaring::RoaringBitmap;
use super::read_u32_ne_bytes;
use crate::heed_codec::facet::{decode_prefix_string, encode_prefix_string};
// use crate::heed_codec::facet::{decode_prefix_string, encode_prefix_string};
use crate::heed_codec::CboRoaringBitmapCodec;
use crate::Result;
@ -49,32 +49,32 @@ pub fn merge_roaring_bitmaps<'a>(_key: &[u8], values: &[Cow<'a, [u8]>]) -> Resul
}
}
pub fn keep_first_prefix_value_merge_roaring_bitmaps<'a>(
_key: &[u8],
values: &[Cow<'a, [u8]>],
) -> Result<Cow<'a, [u8]>> {
if values.len() == 1 {
Ok(values[0].clone())
} else {
let original = decode_prefix_string(&values[0]).unwrap().0;
let merged_bitmaps = values
.iter()
.map(AsRef::as_ref)
.map(decode_prefix_string)
.map(Option::unwrap)
.map(|(_, bitmap_bytes)| bitmap_bytes)
.map(RoaringBitmap::deserialize_from)
.map(StdResult::unwrap)
.reduce(|a, b| a | b)
.unwrap();
// pub fn keep_first_prefix_value_merge_roaring_bitmaps<'a>(
// _key: &[u8],
// values: &[Cow<'a, [u8]>],
// ) -> Result<Cow<'a, [u8]>> {
// if values.len() == 1 {
// Ok(values[0].clone())
// } else {
// let original = decode_prefix_string(&values[0]).unwrap().0;
// let merged_bitmaps = values
// .iter()
// .map(AsRef::as_ref)
// .map(decode_prefix_string)
// .map(Option::unwrap)
// .map(|(_, bitmap_bytes)| bitmap_bytes)
// .map(RoaringBitmap::deserialize_from)
// .map(StdResult::unwrap)
// .reduce(|a, b| a | b)
// .unwrap();
let cap = std::mem::size_of::<u16>() + original.len() + merged_bitmaps.serialized_size();
let mut buffer = Vec::with_capacity(cap);
encode_prefix_string(original, &mut buffer)?;
merged_bitmaps.serialize_into(&mut buffer)?;
Ok(Cow::Owned(buffer))
}
}
// let cap = std::mem::size_of::<u16>() + original.len() + merged_bitmaps.serialized_size();
// let mut buffer = Vec::with_capacity(cap);
// encode_prefix_string(original, &mut buffer)?;
// merged_bitmaps.serialize_into(&mut buffer)?;
// Ok(Cow::Owned(buffer))
// }
// }
pub fn keep_first<'a>(_key: &[u8], values: &[Cow<'a, [u8]>]) -> Result<Cow<'a, [u8]>> {
Ok(values[0].clone())

6
milli/src/update/index_documents/helpers/mod.rs
View File

@ -13,9 +13,9 @@ pub use grenad_helpers::{
writer_into_reader, GrenadParameters, MergeableReader,
};
pub use merge_functions::{
concat_u32s_array, keep_first, keep_first_prefix_value_merge_roaring_bitmaps, keep_latest_obkv,
merge_cbo_roaring_bitmaps, merge_obkvs, merge_roaring_bitmaps, merge_two_obkvs,
roaring_bitmap_from_u32s_array, serialize_roaring_bitmap, MergeFn,
concat_u32s_array, keep_first, keep_latest_obkv, merge_cbo_roaring_bitmaps, merge_obkvs,
merge_roaring_bitmaps, merge_two_obkvs, roaring_bitmap_from_u32s_array,
serialize_roaring_bitmap, MergeFn,
};
/// The maximum length a word can be

16
milli/src/update/index_documents/typed_chunk.rs
View File

@ -13,7 +13,6 @@ use super::helpers::{
valid_lmdb_key, CursorClonableMmap,
};
use super::{ClonableMmap, MergeFn};
use crate::heed_codec::facet::{decode_prefix_string, encode_prefix_string};
use crate::update::index_documents::helpers::as_cloneable_grenad;
use crate::{
lat_lng_to_xyz, BoRoaringBitmapCodec, CboRoaringBitmapCodec, DocumentId, GeoPoint, Index,
@ -197,13 +196,14 @@ pub(crate) fn write_typed_chunk_into_index(
index_is_empty,
|value, _buffer| Ok(value),
|new_values, db_values, buffer| {
let (_, new_values) = decode_prefix_string(new_values).unwrap();
let new_values = RoaringBitmap::deserialize_from(new_values)?;
let (db_original, db_values) = decode_prefix_string(db_values).unwrap();
let db_values = RoaringBitmap::deserialize_from(db_values)?;
let values = new_values | db_values;
encode_prefix_string(db_original, buffer)?;
Ok(values.serialize_into(buffer)?)
todo!()
// let (_, new_values) = decode_prefix_string(new_values).unwrap();
// let new_values = RoaringBitmap::deserialize_from(new_values)?;
// let (db_original, db_values) = decode_prefix_string(db_values).unwrap();
// let db_values = RoaringBitmap::deserialize_from(db_values)?;
// let values = new_values | db_values;
// encode_prefix_string(db_original, buffer)?;
// Ok(values.serialize_into(buffer)?)
},
)?;
is_merged_database = true;