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Merge pull request #40 from meilisearch/asc-desc-faceted-fields

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Ascending and descending custom ranking
This commit is contained in:
Clément Renault 2020-12-04 12:08:22 +01:00 committed by GitHub
commit 9628da2d17
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GPG Key ID: 4AEE18F83AFDEB23
27 changed files with 1475 additions and 710 deletions
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61
Cargo.lock generated
View File

@ -6,6 +6,15 @@ version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ccc9a9dd069569f212bc4330af9f17c4afb5e8ce185e83dbb14f1349dda18b10"
[[package]]
name = "aho-corasick"
version = "0.7.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
dependencies = [
"memchr",
]
[[package]]
name = "anyhow"
version = "1.0.31"
@ -345,6 +354,16 @@ dependencies = [
"miniz_oxide",
]
[[package]]
name = "form_urlencoded"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ece68d15c92e84fa4f19d3780f1294e5ca82a78a6d515f1efaabcc144688be00"
dependencies = [
"matches",
"percent-encoding",
]
[[package]]
name = "fs_extra"
version = "1.1.0"
@ -429,9 +448,9 @@ dependencies = [
[[package]]
name = "heed"
version = "0.10.4"
version = "0.10.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cddc0d0d20adfc803b3e57c2d84447e134cad636202e68e275c65e3cbe63c616"
checksum = "2eaba3b0edee6a9cd551f24caca2027922b03259f7203a15f0b86af4c1348fcc"
dependencies = [
"byteorder",
"heed-traits",
@ -453,9 +472,9 @@ checksum = "b328f6260a7e51bdb0ca6b68e6ea27ee3d11fba5dee930896ee7ff6ad5fc072c"
[[package]]
name = "heed-types"
version = "0.7.1"
version = "0.7.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72fc61caee13e85ea330eabf0c6c7098c511ff173bcb57a760b1eda3bba9f6eb"
checksum = "e628efb08beaee58355f80dc4adba79d644940ea9eef60175ea17dc218aab405"
dependencies = [
"bincode",
"heed-traits",
@ -571,9 +590,9 @@ dependencies = [
[[package]]
name = "libc"
version = "0.2.79"
version = "0.2.80"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
[[package]]
name = "linked-hash-map"
@ -654,6 +673,7 @@ dependencies = [
"criterion",
"crossbeam-channel",
"csv",
"either",
"flate2",
"fst",
"fxhash",
@ -675,6 +695,7 @@ dependencies = [
"pest 2.1.3 (git+https://github.com/pest-parser/pest.git?rev=51fd1d49f1041f7839975664ef71fe15c7dcaf67)",
"pest_derive",
"rayon",
"regex",
"ringtail",
"roaring",
"serde",
@ -760,9 +781,9 @@ checksum = "ce30a214135d83e7250f2e8fad781f7cb987e3a3f1b4529712d891594bda311c"
[[package]]
name = "once_cell"
version = "1.4.0"
version = "1.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
[[package]]
name = "oorandom"
@ -1003,11 +1024,14 @@ dependencies = [
[[package]]
name = "regex"
version = "1.4.1"
version = "1.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8963b85b8ce3074fecffde43b4b0dded83ce2f367dc8d363afc56679f3ee820b"
checksum = "38cf2c13ed4745de91a5eb834e11c00bcc3709e773173b2ce4c56c9fbde04b9c"
dependencies = [
"aho-corasick",
"memchr",
"regex-syntax",
"thread_local",
]
[[package]]
@ -1021,9 +1045,9 @@ dependencies = [
[[package]]
name = "regex-syntax"
version = "0.6.20"
version = "0.6.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8cab7a364d15cde1e505267766a2d3c4e22a843e1a601f0fa7564c0f82ced11c"
checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
[[package]]
name = "remove_dir_all"
@ -1096,9 +1120,9 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
[[package]]
name = "serde"
version = "1.0.110"
version = "1.0.117"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "99e7b308464d16b56eba9964e4972a3eee817760ab60d88c3f86e1fecb08204c"
checksum = "b88fa983de7720629c9387e9f517353ed404164b1e482c970a90c1a4aaf7dc1a"
dependencies = [
"serde_derive",
]
@ -1115,9 +1139,9 @@ dependencies = [
[[package]]
name = "serde_derive"
version = "1.0.110"
version = "1.0.117"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "818fbf6bfa9a42d3bfcaca148547aa00c7b915bec71d1757aa2d44ca68771984"
checksum = "cbd1ae72adb44aab48f325a02444a5fc079349a8d804c1fc922aed3f7454c74e"
dependencies = [
"proc-macro2",
"quote",
@ -1406,10 +1430,11 @@ checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
[[package]]
name = "url"
version = "2.1.1"
version = "2.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
checksum = "5909f2b0817350449ed73e8bcd81c8c3c8d9a7a5d8acba4b27db277f1868976e"
dependencies = [
"form_urlencoded",
"idna",
"matches",
"percent-encoding",

4
Cargo.toml
View File

@ -10,11 +10,12 @@ bstr = "0.2.13"
byteorder = "1.3.4"
crossbeam-channel = "0.5.0"
csv = "1.1.3"
either = "1.6.1"
flate2 = "1.0.17"
fst = "0.4.4"
fxhash = "0.2.1"
grenad = { git = "https://github.com/Kerollmops/grenad.git", rev = "3eb7ad9" }
heed = { version = "0.10.4", default-features = false, features = ["lmdb", "sync-read-txn"] }
heed = { version = "0.10.5", default-features = false, features = ["lmdb", "sync-read-txn"] }
human_format = "1.0.3"
jemallocator = "0.3.2"
levenshtein_automata = { version = "0.2.0", features = ["fst_automaton"] }
@ -26,6 +27,7 @@ obkv = "0.1.0"
once_cell = "1.4.0"
ordered-float = "2.0.0"
rayon = "1.3.1"
regex = "1.4.2"
ringtail = "0.3.0"
roaring = "0.6.1"
serde = { version = "1.0", features = ["derive"] }

56
http-ui/Cargo.lock generated
View File

@ -6,6 +6,15 @@ version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
[[package]]
name = "aho-corasick"
version = "0.7.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
dependencies = [
"memchr",
]
[[package]]
name = "anyhow"
version = "1.0.34"
@ -404,6 +413,16 @@ version = "1.0.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
[[package]]
name = "form_urlencoded"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ece68d15c92e84fa4f19d3780f1294e5ca82a78a6d515f1efaabcc144688be00"
dependencies = [
"matches",
"percent-encoding",
]
[[package]]
name = "fs_extra"
version = "1.2.0"
@ -654,9 +673,9 @@ dependencies = [
[[package]]
name = "heed"
version = "0.10.4"
version = "0.10.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cddc0d0d20adfc803b3e57c2d84447e134cad636202e68e275c65e3cbe63c616"
checksum = "2eaba3b0edee6a9cd551f24caca2027922b03259f7203a15f0b86af4c1348fcc"
dependencies = [
"byteorder",
"heed-traits",
@ -678,9 +697,9 @@ checksum = "b328f6260a7e51bdb0ca6b68e6ea27ee3d11fba5dee930896ee7ff6ad5fc072c"
[[package]]
name = "heed-types"
version = "0.7.1"
version = "0.7.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72fc61caee13e85ea330eabf0c6c7098c511ff173bcb57a760b1eda3bba9f6eb"
checksum = "e628efb08beaee58355f80dc4adba79d644940ea9eef60175ea17dc218aab405"
dependencies = [
"bincode",
"heed-traits",
@ -980,6 +999,7 @@ dependencies = [
"byteorder",
"crossbeam-channel",
"csv",
"either",
"flate2",
"fst",
"fxhash",
@ -1000,6 +1020,7 @@ dependencies = [
"pest 2.1.3 (git+https://github.com/pest-parser/pest.git?rev=51fd1d49f1041f7839975664ef71fe15c7dcaf67)",
"pest_derive",
"rayon",
"regex",
"ringtail",
"roaring",
"serde",
@ -1199,9 +1220,9 @@ checksum = "ddd8a5a0aa2f3adafe349259a5b3e21a19c388b792414c1161d60a69c1fa48e8"
[[package]]
name = "once_cell"
version = "1.4.1"
version = "1.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "260e51e7efe62b592207e9e13a68e43692a7a279171d6ba57abd208bf23645ad"
checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
[[package]]
name = "opaque-debug"
@ -1602,6 +1623,18 @@ version = "0.1.57"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
[[package]]
name = "regex"
version = "1.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "38cf2c13ed4745de91a5eb834e11c00bcc3709e773173b2ce4c56c9fbde04b9c"
dependencies = [
"aho-corasick",
"memchr",
"regex-syntax",
"thread_local",
]
[[package]]
name = "regex-automata"
version = "0.1.9"
@ -1611,6 +1644,12 @@ dependencies = [
"byteorder",
]
[[package]]
name = "regex-syntax"
version = "0.6.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
[[package]]
name = "remove_dir_all"
version = "0.5.3"
@ -2137,10 +2176,11 @@ checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
[[package]]
name = "url"
version = "2.1.1"
version = "2.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
checksum = "5909f2b0817350449ed73e8bcd81c8c3c8d9a7a5d8acba4b27db277f1868976e"
dependencies = [
"form_urlencoded",
"idna",
"matches",
"percent-encoding",

2
http-ui/Cargo.toml
View File

@ -8,7 +8,7 @@ edition = "2018"
[dependencies]
anyhow = "1.0.28"
grenad = { git = "https://github.com/Kerollmops/grenad.git", rev = "3eb7ad9" }
heed = "0.10.4"
heed = "0.10.5"
memmap = "0.7.0"
milli = { path = ".." }
once_cell = "1.4.1"

15
http-ui/src/main.rs
View File

@ -243,6 +243,13 @@ struct Settings {
#[serde(default)]
faceted_attributes: Option<HashMap<String, String>>,
#[serde(
default,
deserialize_with = "deserialize_some",
skip_serializing_if = "Option::is_none",
)]
criteria: Option<Option<Vec<String>>>,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
@ -399,6 +406,14 @@ async fn main() -> anyhow::Result<()> {
builder.set_faceted_fields(facet_types);
}
// We transpose the settings JSON struct into a real setting update.
if let Some(criteria) = settings.criteria {
match criteria {
Some(criteria) => builder.set_criteria(criteria),
None => builder.reset_criteria(),
}
}
let result = builder.execute(|indexing_step| {
let (current, total) = match indexing_step {
TransformFromUserIntoGenericFormat { documents_seen } => (documents_seen, None),

43
src/criterion.rs
View File

@ -1,3 +1,10 @@
use crate::{FieldsIdsMap, FieldId};
use anyhow::{Context, bail};
use regex::Regex;
use serde::{Serialize, Deserialize};
#[derive(Debug, Serialize, Deserialize, Copy, Clone, PartialEq, Eq)]
pub enum Criterion {
/// Sorted by increasing number of typos.
Typo,
@ -14,9 +21,41 @@ pub enum Criterion {
/// Sorted by the similarity of the matched words with the query words.
Exactness,
/// Sorted by the increasing value of the field specified.
CustomAsc(String),
Asc(FieldId),
/// Sorted by the decreasing value of the field specified.
CustomDesc(String),
Desc(FieldId),
}
impl Criterion {
pub fn from_str(fields_ids_map: &mut FieldsIdsMap, txt: &str) -> anyhow::Result<Criterion> {
match txt {
"typo" => Ok(Criterion::Typo),
"words" => Ok(Criterion::Words),
"proximity" => Ok(Criterion::Proximity),
"attribute" => Ok(Criterion::Attribute),
"wordsposition" => Ok(Criterion::WordsPosition),
"exactness" => Ok(Criterion::Exactness),
text => {
let re = Regex::new(r#"(asc|desc)\(([\w_-]+)\)"#)?;
let caps = re.captures(text).with_context(|| format!("unknown criterion name: {}", text))?;
let order = caps.get(1).unwrap().as_str();
let field_name = caps.get(2).unwrap().as_str();
let field_id = fields_ids_map.insert(field_name).context("field id limit reached")?;
match order {
"asc" => Ok(Criterion::Asc(field_id)),
"desc" => Ok(Criterion::Desc(field_id)),
otherwise => bail!("unknown criterion name: {}", otherwise),
}
},
}
}
pub fn field_id(&self) -> Option<FieldId> {
match *self {
Criterion::Asc(fid) | Criterion::Desc(fid) => Some(fid),
_ => None,
}
}
}
pub fn default_criteria() -> Vec<Criterion> {

17
src/fields_ids_map.rs
View File

@ -1,11 +1,12 @@
use std::collections::BTreeMap;
use serde::{Serialize, Deserialize};
use crate::FieldId;
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FieldsIdsMap {
names_ids: BTreeMap<String, u8>,
ids_names: BTreeMap<u8, String>,
next_id: Option<u8>,
names_ids: BTreeMap<String, FieldId>,
ids_names: BTreeMap<FieldId, String>,
next_id: Option<FieldId>,
}
impl FieldsIdsMap {
@ -29,7 +30,7 @@ impl FieldsIdsMap {
/// Returns the field id related to a field name, it will create a new field id if the
/// name is not already known. Returns `None` if the maximum field id as been reached.
pub fn insert(&mut self, name: &str) -> Option<u8> {
pub fn insert(&mut self, name: &str) -> Option<FieldId> {
match self.names_ids.get(name) {
Some(id) => Some(*id),
None => {
@ -43,17 +44,17 @@ impl FieldsIdsMap {
}
/// Get the id of a field based on its name.
pub fn id(&self, name: &str) -> Option<u8> {
pub fn id(&self, name: &str) -> Option<FieldId> {
self.names_ids.get(name).copied()
}
/// Get the name of a field based on its id.
pub fn name(&self, id: u8) -> Option<&str> {
pub fn name(&self, id: FieldId) -> Option<&str> {
self.ids_names.get(&id).map(String::as_str)
}
/// Remove a field name and id based on its name.
pub fn remove(&mut self, name: &str) -> Option<u8> {
pub fn remove(&mut self, name: &str) -> Option<FieldId> {
match self.names_ids.remove(name) {
Some(id) => self.ids_names.remove_entry(&id).map(|(id, _)| id),
None => None,
@ -61,7 +62,7 @@ impl FieldsIdsMap {
}
/// Iterate over the ids and names in the ids order.
pub fn iter(&self) -> impl Iterator<Item=(u8, &str)> {
pub fn iter(&self) -> impl Iterator<Item=(FieldId, &str)> {
self.ids_names.iter().map(|(id, name)| (*id, name.as_str()))
}
}

5
src/heed_codec/facet/facet_level_value_f64_codec.rs
View File

@ -2,12 +2,13 @@ use std::borrow::Cow;
use std::convert::TryInto;
use crate::facet::value_encoding::f64_into_bytes;
use crate::FieldId;
// TODO do not de/serialize right bound when level = 0
pub struct FacetLevelValueF64Codec;
impl<'a> heed::BytesDecode<'a> for FacetLevelValueF64Codec {
type DItem = (u8, u8, f64, f64);
type DItem = (FieldId, u8, f64, f64);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id, bytes) = bytes.split_first()?;
@ -27,7 +28,7 @@ impl<'a> heed::BytesDecode<'a> for FacetLevelValueF64Codec {
}
impl heed::BytesEncode<'_> for FacetLevelValueF64Codec {
type EItem = (u8, u8, f64, f64);
type EItem = (FieldId, u8, f64, f64);
fn bytes_encode((field_id, level, left, right): &Self::EItem) -> Option<Cow<[u8]>> {
let mut buffer = [0u8; 32];

5
src/heed_codec/facet/facet_level_value_i64_codec.rs
View File

@ -2,11 +2,12 @@ use std::borrow::Cow;
use std::convert::TryInto;
use crate::facet::value_encoding::{i64_from_bytes, i64_into_bytes};
use crate::FieldId;
pub struct FacetLevelValueI64Codec;
impl<'a> heed::BytesDecode<'a> for FacetLevelValueI64Codec {
type DItem = (u8, u8, i64, i64);
type DItem = (FieldId, u8, i64, i64);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id, bytes) = bytes.split_first()?;
@ -24,7 +25,7 @@ impl<'a> heed::BytesDecode<'a> for FacetLevelValueI64Codec {
}
impl heed::BytesEncode<'_> for FacetLevelValueI64Codec {
type EItem = (u8, u8, i64, i64);
type EItem = (FieldId, u8, i64, i64);
fn bytes_encode((field_id, level, left, right): &Self::EItem) -> Option<Cow<[u8]>> {
let left = i64_into_bytes(*left);

6
src/heed_codec/facet/facet_value_string_codec.rs
View File

@ -1,10 +1,12 @@
use std::borrow::Cow;
use std::str;
use crate::FieldId;
pub struct FacetValueStringCodec;
impl<'a> heed::BytesDecode<'a> for FacetValueStringCodec {
type DItem = (u8, &'a str);
type DItem = (FieldId, &'a str);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id, bytes) = bytes.split_first()?;
@ -14,7 +16,7 @@ impl<'a> heed::BytesDecode<'a> for FacetValueStringCodec {
}
impl<'a> heed::BytesEncode<'a> for FacetValueStringCodec {
type EItem = (u8, &'a str);
type EItem = (FieldId, &'a str);
fn bytes_encode((field_id, value): &Self::EItem) -> Option<Cow<[u8]>> {
let mut bytes = Vec::with_capacity(value.len() + 1);

36
src/heed_codec/facet/field_doc_id_facet_f64_codec.rs Normal file
View File

@ -0,0 +1,36 @@
use std::borrow::Cow;
use std::convert::TryInto;
use crate::{FieldId, DocumentId};
use crate::facet::value_encoding::f64_into_bytes;
pub struct FieldDocIdFacetF64Codec;
impl<'a> heed::BytesDecode<'a> for FieldDocIdFacetF64Codec {
type DItem = (FieldId, DocumentId, f64);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id, bytes) = bytes.split_first()?;
let (document_id_bytes, bytes) = bytes.split_at(4);
let document_id = document_id_bytes.try_into().map(u32::from_be_bytes).ok()?;
let value = bytes[8..16].try_into().map(f64::from_be_bytes).ok()?;
Some((*field_id, document_id, value))
}
}
impl<'a> heed::BytesEncode<'a> for FieldDocIdFacetF64Codec {
type EItem = (FieldId, DocumentId, f64);
fn bytes_encode((field_id, document_id, value): &Self::EItem) -> Option<Cow<[u8]>> {
let mut bytes = Vec::with_capacity(1 + 4 + 8 + 8);
bytes.push(*field_id);
bytes.extend_from_slice(&document_id.to_be_bytes());
let value_bytes = f64_into_bytes(*value)?;
bytes.extend_from_slice(&value_bytes);
bytes.extend_from_slice(&value.to_be_bytes());
Some(Cow::Owned(bytes))
}
}

34
src/heed_codec/facet/field_doc_id_facet_i64_codec.rs Normal file
View File

@ -0,0 +1,34 @@
use std::borrow::Cow;
use std::convert::TryInto;
use crate::facet::value_encoding::{i64_into_bytes, i64_from_bytes};
use crate::{FieldId, DocumentId};
pub struct FieldDocIdFacetI64Codec;
impl<'a> heed::BytesDecode<'a> for FieldDocIdFacetI64Codec {
type DItem = (FieldId, DocumentId, i64);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id, bytes) = bytes.split_first()?;
let (document_id_bytes, bytes) = bytes.split_at(4);
let document_id = document_id_bytes.try_into().map(u32::from_be_bytes).ok()?;
let value = bytes[..8].try_into().map(i64_from_bytes).ok()?;
Some((*field_id, document_id, value))
}
}
impl<'a> heed::BytesEncode<'a> for FieldDocIdFacetI64Codec {
type EItem = (FieldId, DocumentId, i64);
fn bytes_encode((field_id, document_id, value): &Self::EItem) -> Option<Cow<[u8]>> {
let mut bytes = Vec::with_capacity(1 + 4 + 8);
bytes.push(*field_id);
bytes.extend_from_slice(&document_id.to_be_bytes());
bytes.extend_from_slice(&i64_into_bytes(*value));
Some(Cow::Owned(bytes))
}
}

31
src/heed_codec/facet/field_doc_id_facet_string_codec.rs Normal file
View File

@ -0,0 +1,31 @@
use std::borrow::Cow;
use std::convert::TryInto;
use std::str;
use crate::{FieldId, DocumentId};
pub struct FieldDocIdFacetStringCodec;
impl<'a> heed::BytesDecode<'a> for FieldDocIdFacetStringCodec {
type DItem = (FieldId, DocumentId, &'a str);
fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
let (field_id, bytes) = bytes.split_first()?;
let (document_id_bytes, bytes) = bytes.split_at(4);
let document_id = document_id_bytes.try_into().map(u32::from_be_bytes).ok()?;
let value = str::from_utf8(bytes).ok()?;
Some((*field_id, document_id, value))
}
}
impl<'a> heed::BytesEncode<'a> for FieldDocIdFacetStringCodec {
type EItem = (FieldId, DocumentId, &'a str);
fn bytes_encode((field_id, document_id, value): &Self::EItem) -> Option<Cow<[u8]>> {
let mut bytes = Vec::with_capacity(1 + 4 + value.len());
bytes.push(*field_id);
bytes.extend_from_slice(&document_id.to_be_bytes());
bytes.extend_from_slice(value.as_bytes());
Some(Cow::Owned(bytes))
}
}

6
src/heed_codec/facet/mod.rs
View File

@ -1,7 +1,13 @@
mod facet_level_value_f64_codec;
mod facet_level_value_i64_codec;
mod facet_value_string_codec;
mod field_doc_id_facet_f64_codec;
mod field_doc_id_facet_i64_codec;
mod field_doc_id_facet_string_codec;
pub use self::facet_level_value_f64_codec::FacetLevelValueF64Codec;
pub use self::facet_level_value_i64_codec::FacetLevelValueI64Codec;
pub use self::facet_value_string_codec::FacetValueStringCodec;
pub use self::field_doc_id_facet_f64_codec::FieldDocIdFacetF64Codec;
pub use self::field_doc_id_facet_i64_codec::FieldDocIdFacetI64Codec;
pub use self::field_doc_id_facet_string_codec::FieldDocIdFacetStringCodec;

52
src/index.rs
View File

@ -9,13 +9,14 @@ use roaring::RoaringBitmap;
use crate::facet::FacetType;
use crate::fields_ids_map::FieldsIdsMap;
use crate::Search;
use crate::{BEU32, DocumentId, ExternalDocumentsIds};
use crate::{default_criteria, Criterion, Search};
use crate::{BEU32, DocumentId, FieldId, ExternalDocumentsIds};
use crate::{
RoaringBitmapCodec, BEU32StrCodec, StrStrU8Codec, ObkvCodec,
BoRoaringBitmapCodec, CboRoaringBitmapCodec,
};
pub const CRITERIA_KEY: &str = "criteria";
pub const DISPLAYED_FIELDS_KEY: &str = "displayed-fields";
pub const DOCUMENTS_IDS_KEY: &str = "documents-ids";
pub const FACETED_DOCUMENTS_IDS_PREFIX: &str = "faceted-documents-ids";
@ -41,13 +42,15 @@ pub struct Index {
pub word_pair_proximity_docids: Database<StrStrU8Codec, CboRoaringBitmapCodec>,
/// Maps the facet field id and the globally ordered value with the docids that corresponds to it.
pub facet_field_id_value_docids: Database<ByteSlice, CboRoaringBitmapCodec>,
/// Maps the document id, the facet field id and the globally ordered value.
pub field_id_docid_facet_values: Database<ByteSlice, Unit>,
/// Maps the document id to the document as an obkv store.
pub documents: Database<OwnedType<BEU32>, ObkvCodec>,
}
impl Index {
pub fn new<P: AsRef<Path>>(mut options: heed::EnvOpenOptions, path: P) -> anyhow::Result<Index> {
options.max_dbs(6);
options.max_dbs(7);
let env = options.open(path)?;
let main = env.create_poly_database(Some("main"))?;
@ -55,6 +58,7 @@ impl Index {
let docid_word_positions = env.create_database(Some("docid-word-positions"))?;
let word_pair_proximity_docids = env.create_database(Some("word-pair-proximity-docids"))?;
let facet_field_id_value_docids = env.create_database(Some("facet-field-id-value-docids"))?;
let field_id_docid_facet_values = env.create_database(Some("field-id-docid-facet-values"))?;
let documents = env.create_database(Some("documents"))?;
Ok(Index {
@ -64,6 +68,7 @@ impl Index {
docid_word_positions,
word_pair_proximity_docids,
facet_field_id_value_docids,
field_id_docid_facet_values,
documents,
})
}
@ -107,8 +112,8 @@ impl Index {
/* primary key */
/// Writes the documents primary key, this is the field name that is used to store the id.
pub fn put_primary_key(&self, wtxn: &mut RwTxn, primary_key: u8) -> heed::Result<()> {
self.main.put::<_, Str, OwnedType<u8>>(wtxn, PRIMARY_KEY_KEY, &primary_key)
pub fn put_primary_key(&self, wtxn: &mut RwTxn, primary_key: FieldId) -> heed::Result<()> {
self.main.put::<_, Str, OwnedType<FieldId>>(wtxn, PRIMARY_KEY_KEY, &primary_key)
}
/// Deletes the primary key of the documents, this can be done to reset indexes settings.
@ -117,8 +122,8 @@ impl Index {
}
/// Returns the documents primary key, `None` if it hasn't been defined.
pub fn primary_key(&self, rtxn: &RoTxn) -> heed::Result<Option<u8>> {
self.main.get::<_, Str, OwnedType<u8>>(rtxn, PRIMARY_KEY_KEY)
pub fn primary_key(&self, rtxn: &RoTxn) -> heed::Result<Option<FieldId>> {
self.main.get::<_, Str, OwnedType<FieldId>>(rtxn, PRIMARY_KEY_KEY)
}
/* external documents ids */
@ -172,7 +177,7 @@ impl Index {
/// Writes the fields ids that must be displayed in the defined order.
/// There must be not be any duplicate field id.
pub fn put_displayed_fields(&self, wtxn: &mut RwTxn, fields: &[u8]) -> heed::Result<()> {
pub fn put_displayed_fields(&self, wtxn: &mut RwTxn, fields: &[FieldId]) -> heed::Result<()> {
self.main.put::<_, Str, ByteSlice>(wtxn, DISPLAYED_FIELDS_KEY, fields)
}
@ -184,14 +189,14 @@ impl Index {
/// Returns the displayed fields ids in the order they must be returned. If it returns
/// `None` it means that all the attributes are displayed in the order of the `FieldsIdsMap`.
pub fn displayed_fields<'t>(&self, rtxn: &'t RoTxn) -> heed::Result<Option<&'t [u8]>> {
pub fn displayed_fields<'t>(&self, rtxn: &'t RoTxn) -> heed::Result<Option<&'t [FieldId]>> {
self.main.get::<_, Str, ByteSlice>(rtxn, DISPLAYED_FIELDS_KEY)
}
/* searchable fields */
/// Writes the searchable fields, when this list is specified, only these are indexed.
pub fn put_searchable_fields(&self, wtxn: &mut RwTxn, fields: &[u8]) -> heed::Result<()> {
pub fn put_searchable_fields(&self, wtxn: &mut RwTxn, fields: &[FieldId]) -> heed::Result<()> {
assert!(fields.windows(2).all(|win| win[0] < win[1])); // is sorted
self.main.put::<_, Str, ByteSlice>(wtxn, SEARCHABLE_FIELDS_KEY, fields)
}
@ -203,7 +208,7 @@ impl Index {
/// Returns the searchable fields ids, those are the fields that are indexed,
/// if the searchable fields aren't there it means that **all** the fields are indexed.
pub fn searchable_fields<'t>(&self, rtxn: &'t RoTxn) -> heed::Result<Option<&'t [u8]>> {
pub fn searchable_fields<'t>(&self, rtxn: &'t RoTxn) -> heed::Result<Option<&'t [FieldId]>> {
self.main.get::<_, Str, ByteSlice>(rtxn, SEARCHABLE_FIELDS_KEY)
}
@ -211,7 +216,7 @@ impl Index {
/// Writes the facet fields ids associated with their facet type or `None` if
/// the facet type is currently unknown.
pub fn put_faceted_fields(&self, wtxn: &mut RwTxn, fields_types: &HashMap<u8, FacetType>) -> heed::Result<()> {
pub fn put_faceted_fields(&self, wtxn: &mut RwTxn, fields_types: &HashMap<FieldId, FacetType>) -> heed::Result<()> {
self.main.put::<_, Str, SerdeJson<_>>(wtxn, FACETED_FIELDS_KEY, fields_types)
}
@ -221,14 +226,14 @@ impl Index {
}
/// Returns the facet fields ids associated with their facet type.
pub fn faceted_fields(&self, wtxn: &RoTxn) -> heed::Result<HashMap<u8, FacetType>> {
pub fn faceted_fields(&self, wtxn: &RoTxn) -> heed::Result<HashMap<FieldId, FacetType>> {
Ok(self.main.get::<_, Str, SerdeJson<_>>(wtxn, FACETED_FIELDS_KEY)?.unwrap_or_default())
}
/* faceted documents ids */
/// Writes the documents ids that are faceted under this field id.
pub fn put_faceted_documents_ids(&self, wtxn: &mut RwTxn, field_id: u8, docids: &RoaringBitmap) -> heed::Result<()> {
pub fn put_faceted_documents_ids(&self, wtxn: &mut RwTxn, field_id: FieldId, docids: &RoaringBitmap) -> heed::Result<()> {
let mut buffer = [0u8; FACETED_DOCUMENTS_IDS_PREFIX.len() + 1];
buffer[..FACETED_DOCUMENTS_IDS_PREFIX.len()].clone_from_slice(FACETED_DOCUMENTS_IDS_PREFIX.as_bytes());
*buffer.last_mut().unwrap() = field_id;
@ -236,7 +241,7 @@ impl Index {
}
/// Retrieve all the documents ids that faceted under this field id.
pub fn faceted_documents_ids(&self, rtxn: &RoTxn, field_id: u8) -> heed::Result<RoaringBitmap> {
pub fn faceted_documents_ids(&self, rtxn: &RoTxn, field_id: FieldId) -> heed::Result<RoaringBitmap> {
let mut buffer = [0u8; FACETED_DOCUMENTS_IDS_PREFIX.len() + 1];
buffer[..FACETED_DOCUMENTS_IDS_PREFIX.len()].clone_from_slice(FACETED_DOCUMENTS_IDS_PREFIX.as_bytes());
*buffer.last_mut().unwrap() = field_id;
@ -246,6 +251,23 @@ impl Index {
}
}
/* criteria */
pub fn put_criteria(&self, wtxn: &mut RwTxn, criteria: &[Criterion]) -> heed::Result<()> {
self.main.put::<_, Str, SerdeJson<&[Criterion]>>(wtxn, CRITERIA_KEY, &criteria)
}
pub fn delete_criteria(&self, wtxn: &mut RwTxn) -> heed::Result<bool> {
self.main.delete::<_, Str>(wtxn, CRITERIA_KEY)
}
pub fn criteria(&self, rtxn: &RoTxn) -> heed::Result<Vec<Criterion>> {
match self.main.get::<_, Str, SerdeJson<Vec<Criterion>>>(rtxn, CRITERIA_KEY)? {
Some(criteria) => Ok(criteria),
None => Ok(default_criteria()),
}
}
/* words fst */
/// Writes the FST which is the words dictionnary of the engine.

5
src/lib.rs
View File

@ -40,15 +40,16 @@ pub type SmallVec16<T> = smallvec::SmallVec<[T; 16]>;
pub type SmallVec8<T> = smallvec::SmallVec<[T; 8]>;
pub type BEU32 = heed::zerocopy::U32<heed::byteorder::BE>;
pub type BEU64 = heed::zerocopy::U64<heed::byteorder::BE>;
pub type DocumentId = u32;
pub type Attribute = u32;
pub type DocumentId = u32;
pub type FieldId = u8;
pub type Position = u32;
type MergeFn = for<'a> fn(&[u8], &[Cow<'a, [u8]>]) -> anyhow::Result<Vec<u8>>;
/// Transform a raw obkv store into a JSON Object.
pub fn obkv_to_json(
displayed_fields: &[u8],
displayed_fields: &[FieldId],
fields_ids_map: &FieldsIdsMap,
obkv: obkv::KvReader,
) -> anyhow::Result<Map<String, Value>>

643
src/search/facet/facet_condition.rs Normal file
View File

@ -0,0 +1,643 @@
use std::collections::HashMap;
use std::fmt::Debug;
use std::ops::Bound::{self, Included, Excluded};
use std::str::FromStr;
use heed::types::{ByteSlice, DecodeIgnore};
use log::debug;
use num_traits::Bounded;
use pest::error::{Error as PestError, ErrorVariant};
use pest::iterators::{Pair, Pairs};
use pest::Parser;
use roaring::RoaringBitmap;
use crate::facet::FacetType;
use crate::heed_codec::facet::FacetValueStringCodec;
use crate::heed_codec::facet::{FacetLevelValueI64Codec, FacetLevelValueF64Codec};
use crate::{Index, FieldId, FieldsIdsMap, CboRoaringBitmapCodec};
use super::FacetRange;
use super::parser::Rule;
use super::parser::{PREC_CLIMBER, FilterParser};
use self::FacetCondition::*;
use self::FacetNumberOperator::*;
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum FacetNumberOperator<T> {
GreaterThan(T),
GreaterThanOrEqual(T),
Equal(T),
NotEqual(T),
LowerThan(T),
LowerThanOrEqual(T),
Between(T, T),
}
impl<T> FacetNumberOperator<T> {
/// This method can return two operations in case it must express
/// an OR operation for the between case (i.e. `TO`).
fn negate(self) -> (Self, Option<Self>) {
match self {
GreaterThan(x) => (LowerThanOrEqual(x), None),
GreaterThanOrEqual(x) => (LowerThan(x), None),
Equal(x) => (NotEqual(x), None),
NotEqual(x) => (Equal(x), None),
LowerThan(x) => (GreaterThanOrEqual(x), None),
LowerThanOrEqual(x) => (GreaterThan(x), None),
Between(x, y) => (LowerThan(x), Some(GreaterThan(y))),
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub enum FacetStringOperator {
Equal(String),
NotEqual(String),
}
impl FacetStringOperator {
fn equal(s: &str) -> Self {
FacetStringOperator::Equal(s.to_lowercase())
}
fn not_equal(s: &str) -> Self {
FacetStringOperator::equal(s).negate()
}
fn negate(self) -> Self {
match self {
FacetStringOperator::Equal(x) => FacetStringOperator::NotEqual(x),
FacetStringOperator::NotEqual(x) => FacetStringOperator::Equal(x),
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub enum FacetCondition {
OperatorI64(FieldId, FacetNumberOperator<i64>),
OperatorF64(FieldId, FacetNumberOperator<f64>),
OperatorString(FieldId, FacetStringOperator),
Or(Box<Self>, Box<Self>),
And(Box<Self>, Box<Self>),
}
fn get_field_id_facet_type<'a>(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
items: &mut Pairs<'a, Rule>,
) -> Result<(FieldId, FacetType), PestError<Rule>>
{
// lexing ensures that we at least have a key
let key = items.next().unwrap();
let field_id = fields_ids_map
.id(key.as_str())
.ok_or_else(|| {
PestError::new_from_span(
ErrorVariant::CustomError {
message: format!(
"attribute `{}` not found, available attributes are: {}",
key.as_str(),
fields_ids_map.iter().map(|(_, n)| n).collect::<Vec<_>>().join(", ")
),
},
key.as_span(),
)
})?;
let facet_type = faceted_fields
.get(&field_id)
.copied()
.ok_or_else(|| {
PestError::new_from_span(
ErrorVariant::CustomError {
message: format!(
"attribute `{}` is not faceted, available faceted attributes are: {}",
key.as_str(),
faceted_fields.keys().flat_map(|id| fields_ids_map.name(*id)).collect::<Vec<_>>().join(", ")
),
},
key.as_span(),
)
})?;
Ok((field_id, facet_type))
}
fn pest_parse<T>(pair: Pair<Rule>) -> Result<T, pest::error::Error<Rule>>
where T: FromStr,
T::Err: ToString,
{
match pair.as_str().parse() {
Ok(value) => Ok(value),
Err(e) => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError { message: e.to_string() },
pair.as_span(),
))
}
}
}
impl FacetCondition {
pub fn from_str(
rtxn: &heed::RoTxn,
index: &Index,
expression: &str,
) -> anyhow::Result<FacetCondition>
{
let fields_ids_map = index.fields_ids_map(rtxn)?;
let faceted_fields = index.faceted_fields(rtxn)?;
let lexed = FilterParser::parse(Rule::prgm, expression)?;
FacetCondition::from_pairs(&fields_ids_map, &faceted_fields, lexed)
}
fn from_pairs(
fim: &FieldsIdsMap,
ff: &HashMap<FieldId, FacetType>,
expression: Pairs<Rule>,
) -> anyhow::Result<Self>
{
PREC_CLIMBER.climb(
expression,
|pair: Pair<Rule>| match pair.as_rule() {
Rule::greater => Ok(Self::greater_than(fim, ff, pair)?),
Rule::geq => Ok(Self::greater_than_or_equal(fim, ff, pair)?),
Rule::eq => Ok(Self::equal(fim, ff, pair)?),
Rule::neq => Ok(Self::equal(fim, ff, pair)?.negate()),
Rule::leq => Ok(Self::lower_than_or_equal(fim, ff, pair)?),
Rule::less => Ok(Self::lower_than(fim, ff, pair)?),
Rule::between => Ok(Self::between(fim, ff, pair)?),
Rule::not => Ok(Self::from_pairs(fim, ff, pair.into_inner())?.negate()),
Rule::prgm => Self::from_pairs(fim, ff, pair.into_inner()),
Rule::term => Self::from_pairs(fim, ff, pair.into_inner()),
_ => unreachable!(),
},
|lhs: anyhow::Result<Self>, op: Pair<Rule>, rhs: anyhow::Result<Self>| {
match op.as_rule() {
Rule::or => Ok(Or(Box::new(lhs?), Box::new(rhs?))),
Rule::and => Ok(And(Box::new(lhs?), Box::new(rhs?))),
_ => unreachable!(),
}
},
)
}
fn negate(self) -> FacetCondition {
match self {
OperatorI64(fid, op) => match op.negate() {
(op, None) => OperatorI64(fid, op),
(a, Some(b)) => Or(Box::new(OperatorI64(fid, a)), Box::new(OperatorI64(fid, b))),
},
OperatorF64(fid, op) => match op.negate() {
(op, None) => OperatorF64(fid, op),
(a, Some(b)) => Or(Box::new(OperatorF64(fid, a)), Box::new(OperatorF64(fid, b))),
},
OperatorString(fid, op) => OperatorString(fid, op.negate()),
Or(a, b) => And(Box::new(a.negate()), Box::new(b.negate())),
And(a, b) => Or(Box::new(a.negate()), Box::new(b.negate())),
}
}
fn between(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let lvalue = items.next().unwrap();
let rvalue = items.next().unwrap();
match ftype {
FacetType::Integer => {
let lvalue = pest_parse(lvalue)?;
let rvalue = pest_parse(rvalue)?;
Ok(OperatorI64(fid, Between(lvalue, rvalue)))
},
FacetType::Float => {
let lvalue = pest_parse(lvalue)?;
let rvalue = pest_parse(rvalue)?;
Ok(OperatorF64(fid, Between(lvalue, rvalue)))
},
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn equal(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, Equal(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, Equal(pest_parse(value)?))),
FacetType::String => Ok(OperatorString(fid, FacetStringOperator::equal(value.as_str()))),
}
}
fn greater_than(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, GreaterThan(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, GreaterThan(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn greater_than_or_equal(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, GreaterThanOrEqual(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, GreaterThanOrEqual(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn lower_than(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, LowerThan(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, LowerThan(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn lower_than_or_equal(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<FieldId, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, LowerThanOrEqual(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, LowerThanOrEqual(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
}
impl FacetCondition {
/// Aggregates the documents ids that are part of the specified range automatically
/// going deeper through the levels.
fn explore_facet_levels<'t, T: 't, KC>(
rtxn: &'t heed::RoTxn,
db: heed::Database<ByteSlice, CboRoaringBitmapCodec>,
field_id: FieldId,
level: u8,
left: Bound<T>,
right: Bound<T>,
output: &mut RoaringBitmap,
) -> anyhow::Result<()>
where
T: Copy + PartialEq + PartialOrd + Bounded + Debug,
KC: heed::BytesDecode<'t, DItem = (u8, u8, T, T)>,
KC: for<'x> heed::BytesEncode<'x, EItem = (u8, u8, T, T)>,
{
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 => {
return Self::explore_facet_levels::<T, KC>(rtxn, db, field_id, 0, left, right, output);
},
// lower TO upper when lower > upper must return no result
(Included(l), Included(r)) if l > r => return Ok(()),
(Included(l), Excluded(r)) if l >= r => return Ok(()),
(Excluded(l), Excluded(r)) if l >= r => return Ok(()),
(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 = FacetRange::new(rtxn, db.remap_key_type::<KC>(), 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.union_with(&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_levels::<T, KC>(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_levels::<T, KC>(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_levels::<T, KC>(rtxn, db, field_id, deeper_level, left, right, output)?;
},
}
Ok(())
}
fn evaluate_number_operator<'t, T: 't, KC>(
rtxn: &'t heed::RoTxn,
index: &Index,
db: heed::Database<ByteSlice, CboRoaringBitmapCodec>,
field_id: FieldId,
operator: FacetNumberOperator<T>,
) -> anyhow::Result<RoaringBitmap>
where
T: Copy + PartialEq + PartialOrd + Bounded + Debug,
KC: heed::BytesDecode<'t, DItem = (u8, u8, T, T)>,
KC: for<'x> heed::BytesEncode<'x, EItem = (u8, u8, T, T)>,
{
// Make sure we always bound the ranges with the field id and the level,
// as the facets values are all in the same database and prefixed by the
// field id and the level.
let (left, right) = match operator {
GreaterThan(val) => (Excluded(val), Included(T::max_value())),
GreaterThanOrEqual(val) => (Included(val), Included(T::max_value())),
Equal(val) => (Included(val), Included(val)),
NotEqual(val) => {
let all_documents_ids = index.faceted_documents_ids(rtxn, field_id)?;
let docids = Self::evaluate_number_operator::<T, KC>(rtxn, index, db, field_id, Equal(val))?;
return Ok(all_documents_ids - docids);
},
LowerThan(val) => (Included(T::min_value()), Excluded(val)),
LowerThanOrEqual(val) => (Included(T::min_value()), Included(val)),
Between(left, right) => (Included(left), Included(right)),
};
// Ask for the biggest value that can exist for this specific field, if it exists
// that's fine if it don't, the value just before will be returned instead.
let biggest_level = db
.remap_types::<KC, DecodeIgnore>()
.get_lower_than_or_equal_to(rtxn, &(field_id, u8::MAX, T::max_value(), T::max_value()))?
.and_then(|((id, level, _, _), _)| if id == field_id { Some(level) } else { None });
match biggest_level {
Some(level) => {
let mut output = RoaringBitmap::new();
Self::explore_facet_levels::<T, KC>(rtxn, db, field_id, level, left, right, &mut output)?;
Ok(output)
},
None => Ok(RoaringBitmap::new()),
}
}
fn evaluate_string_operator(
rtxn: &heed::RoTxn,
index: &Index,
db: heed::Database<FacetValueStringCodec, CboRoaringBitmapCodec>,
field_id: FieldId,
operator: &FacetStringOperator,
) -> anyhow::Result<RoaringBitmap>
{
match operator {
FacetStringOperator::Equal(string) => {
match db.get(rtxn, &(field_id, string))? {
Some(docids) => Ok(docids),
None => Ok(RoaringBitmap::new())
}
},
FacetStringOperator::NotEqual(string) => {
let all_documents_ids = index.faceted_documents_ids(rtxn, field_id)?;
let op = FacetStringOperator::Equal(string.clone());
let docids = Self::evaluate_string_operator(rtxn, index, db, field_id, &op)?;
Ok(all_documents_ids - docids)
},
}
}
pub fn evaluate(
&self,
rtxn: &heed::RoTxn,
index: &Index,
) -> anyhow::Result<RoaringBitmap>
{
let db = index.facet_field_id_value_docids;
match self {
OperatorI64(fid, op) => {
Self::evaluate_number_operator::<i64, FacetLevelValueI64Codec>(rtxn, index, db, *fid, *op)
},
OperatorF64(fid, op) => {
Self::evaluate_number_operator::<f64, FacetLevelValueF64Codec>(rtxn, index, db, *fid, *op)
},
OperatorString(fid, op) => {
let db = db.remap_key_type::<FacetValueStringCodec>();
Self::evaluate_string_operator(rtxn, index, db, *fid, op)
},
Or(lhs, rhs) => {
let lhs = lhs.evaluate(rtxn, index)?;
let rhs = rhs.evaluate(rtxn, index)?;
Ok(lhs | rhs)
},
And(lhs, rhs) => {
let lhs = lhs.evaluate(rtxn, index)?;
let rhs = rhs.evaluate(rtxn, index)?;
Ok(lhs & rhs)
},
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::update::Settings;
use heed::EnvOpenOptions;
use maplit::hashmap;
#[test]
fn string() {
let path = tempfile::tempdir().unwrap();
let mut options = EnvOpenOptions::new();
options.map_size(10 * 1024 * 1024); // 10 MB
let index = Index::new(options, &path).unwrap();
// Set the faceted fields to be the channel.
let mut wtxn = index.write_txn().unwrap();
let mut builder = Settings::new(&mut wtxn, &index);
builder.set_faceted_fields(hashmap!{ "channel".into() => "string".into() });
builder.execute(|_| ()).unwrap();
wtxn.commit().unwrap();
// Test that the facet condition is correctly generated.
let rtxn = index.read_txn().unwrap();
let condition = FacetCondition::from_str(&rtxn, &index, "channel = ponce").unwrap();
let expected = OperatorString(1, FacetStringOperator::equal("Ponce"));
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(&rtxn, &index, "channel != ponce").unwrap();
let expected = OperatorString(1, FacetStringOperator::not_equal("ponce"));
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(&rtxn, &index, "NOT channel = ponce").unwrap();
let expected = OperatorString(1, FacetStringOperator::not_equal("ponce"));
assert_eq!(condition, expected);
}
#[test]
fn i64() {
let path = tempfile::tempdir().unwrap();
let mut options = EnvOpenOptions::new();
options.map_size(10 * 1024 * 1024); // 10 MB
let index = Index::new(options, &path).unwrap();
// Set the faceted fields to be the channel.
let mut wtxn = index.write_txn().unwrap();
let mut builder = Settings::new(&mut wtxn, &index);
builder.set_faceted_fields(hashmap!{ "timestamp".into() => "integer".into() });
builder.execute(|_| ()).unwrap();
wtxn.commit().unwrap();
// Test that the facet condition is correctly generated.
let rtxn = index.read_txn().unwrap();
let condition = FacetCondition::from_str(&rtxn, &index, "timestamp 22 TO 44").unwrap();
let expected = OperatorI64(1, Between(22, 44));
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(&rtxn, &index, "NOT timestamp 22 TO 44").unwrap();
let expected = Or(
Box::new(OperatorI64(1, LowerThan(22))),
Box::new(OperatorI64(1, GreaterThan(44))),
);
assert_eq!(condition, expected);
}
#[test]
fn parentheses() {
let path = tempfile::tempdir().unwrap();
let mut options = EnvOpenOptions::new();
options.map_size(10 * 1024 * 1024); // 10 MB
let index = Index::new(options, &path).unwrap();
// Set the faceted fields to be the channel.
let mut wtxn = index.write_txn().unwrap();
let mut builder = Settings::new(&mut wtxn, &index);
builder.set_searchable_fields(vec!["channel".into(), "timestamp".into()]); // to keep the fields order
builder.set_faceted_fields(hashmap!{
"channel".into() => "string".into(),
"timestamp".into() => "integer".into(),
});
builder.execute(|_| ()).unwrap();
wtxn.commit().unwrap();
// Test that the facet condition is correctly generated.
let rtxn = index.read_txn().unwrap();
let condition = FacetCondition::from_str(
&rtxn, &index,
"channel = gotaga OR (timestamp 22 TO 44 AND channel != ponce)",
).unwrap();
let expected = Or(
Box::new(OperatorString(0, FacetStringOperator::equal("gotaga"))),
Box::new(And(
Box::new(OperatorI64(1, Between(22, 44))),
Box::new(OperatorString(0, FacetStringOperator::not_equal("ponce"))),
))
);
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(
&rtxn, &index,
"channel = gotaga OR NOT (timestamp 22 TO 44 AND channel != ponce)",
).unwrap();
let expected = Or(
Box::new(OperatorString(0, FacetStringOperator::equal("gotaga"))),
Box::new(Or(
Box::new(Or(
Box::new(OperatorI64(1, LowerThan(22))),
Box::new(OperatorI64(1, GreaterThan(44))),
)),
Box::new(OperatorString(0, FacetStringOperator::equal("ponce"))),
)),
);
assert_eq!(condition, expected);
}
}

830
src/search/facet/mod.rs
View File

@ -1,661 +1,255 @@
use std::collections::HashMap;
use std::fmt::Debug;
use std::ops::Bound::{self, Unbounded, Included, Excluded};
use std::str::FromStr;
use std::ops::Bound::{self, Included, Excluded, Unbounded};
use heed::types::{ByteSlice, DecodeIgnore};
use either::Either::{self, Left, Right};
use heed::types::{DecodeIgnore, ByteSlice};
use heed::{BytesEncode, BytesDecode};
use heed::{Database, RoRange, RoRevRange, LazyDecode};
use log::debug;
use num_traits::Bounded;
use parser::{PREC_CLIMBER, FilterParser};
use pest::error::{Error as PestError, ErrorVariant};
use pest::iterators::{Pair, Pairs};
use pest::Parser;
use roaring::RoaringBitmap;
use crate::facet::FacetType;
use crate::heed_codec::facet::FacetValueStringCodec;
use crate::heed_codec::facet::{FacetLevelValueI64Codec, FacetLevelValueF64Codec};
use crate::{Index, FieldsIdsMap, CboRoaringBitmapCodec};
use crate::heed_codec::CboRoaringBitmapCodec;
use crate::{Index, FieldId};
use self::FacetCondition::*;
use self::FacetNumberOperator::*;
use self::parser::Rule;
pub use self::facet_condition::{FacetCondition, FacetNumberOperator, FacetStringOperator};
mod facet_condition;
mod parser;
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum FacetNumberOperator<T> {
GreaterThan(T),
GreaterThanOrEqual(T),
Equal(T),
NotEqual(T),
LowerThan(T),
LowerThanOrEqual(T),
Between(T, T),
struct FacetRange<'t, T: 't, KC> {
iter: RoRange<'t, KC, LazyDecode<CboRoaringBitmapCodec>>,
end: Bound<T>,
}
impl<T> FacetNumberOperator<T> {
/// This method can return two operations in case it must express
/// an OR operation for the between case (i.e. `TO`).
fn negate(self) -> (Self, Option<Self>) {
match self {
GreaterThan(x) => (LowerThanOrEqual(x), None),
GreaterThanOrEqual(x) => (LowerThan(x), None),
Equal(x) => (NotEqual(x), None),
NotEqual(x) => (Equal(x), None),
LowerThan(x) => (GreaterThanOrEqual(x), None),
LowerThanOrEqual(x) => (GreaterThan(x), None),
Between(x, y) => (LowerThan(x), Some(GreaterThan(y))),
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub enum FacetStringOperator {
Equal(String),
NotEqual(String),
}
impl FacetStringOperator {
fn equal(s: &str) -> Self {
FacetStringOperator::Equal(s.to_lowercase())
}
fn not_equal(s: &str) -> Self {
FacetStringOperator::equal(s).negate()
}
fn negate(self) -> Self {
match self {
FacetStringOperator::Equal(x) => FacetStringOperator::NotEqual(x),
FacetStringOperator::NotEqual(x) => FacetStringOperator::Equal(x),
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub enum FacetCondition {
OperatorI64(u8, FacetNumberOperator<i64>),
OperatorF64(u8, FacetNumberOperator<f64>),
OperatorString(u8, FacetStringOperator),
Or(Box<Self>, Box<Self>),
And(Box<Self>, Box<Self>),
}
fn get_field_id_facet_type<'a>(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
items: &mut Pairs<'a, Rule>,
) -> Result<(u8, FacetType), PestError<Rule>>
impl<'t, T: 't, KC> FacetRange<'t, T, KC>
where
KC: for<'a> BytesEncode<'a, EItem = (FieldId, u8, T, T)>,
T: PartialOrd + Copy + Bounded,
{
// lexing ensures that we at least have a key
let key = items.next().unwrap();
let field_id = fields_ids_map
.id(key.as_str())
.ok_or_else(|| {
PestError::new_from_span(
ErrorVariant::CustomError {
message: format!(
"attribute `{}` not found, available attributes are: {}",
key.as_str(),
fields_ids_map.iter().map(|(_, n)| n).collect::<Vec<_>>().join(", ")
),
},
key.as_span(),
)
})?;
let facet_type = faceted_fields
.get(&field_id)
.copied()
.ok_or_else(|| {
PestError::new_from_span(
ErrorVariant::CustomError {
message: format!(
"attribute `{}` is not faceted, available faceted attributes are: {}",
key.as_str(),
faceted_fields.keys().flat_map(|id| fields_ids_map.name(*id)).collect::<Vec<_>>().join(", ")
),
},
key.as_span(),
)
})?;
Ok((field_id, facet_type))
}
fn pest_parse<T>(pair: Pair<Rule>) -> Result<T, pest::error::Error<Rule>>
where T: FromStr,
T::Err: ToString,
{
match pair.as_str().parse() {
Ok(value) => Ok(value),
Err(e) => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError { message: e.to_string() },
pair.as_span(),
))
}
}
}
impl FacetCondition {
pub fn from_str(
rtxn: &heed::RoTxn,
index: &Index,
expression: &str,
) -> anyhow::Result<FacetCondition>
{
let fields_ids_map = index.fields_ids_map(rtxn)?;
let faceted_fields = index.faceted_fields(rtxn)?;
let lexed = FilterParser::parse(Rule::prgm, expression)?;
FacetCondition::from_pairs(&fields_ids_map, &faceted_fields, lexed)
}
fn from_pairs(
fim: &FieldsIdsMap,
ff: &HashMap<u8, FacetType>,
expression: Pairs<Rule>,
) -> anyhow::Result<Self>
{
PREC_CLIMBER.climb(
expression,
|pair: Pair<Rule>| match pair.as_rule() {
Rule::greater => Ok(Self::greater_than(fim, ff, pair)?),
Rule::geq => Ok(Self::greater_than_or_equal(fim, ff, pair)?),
Rule::eq => Ok(Self::equal(fim, ff, pair)?),
Rule::neq => Ok(Self::equal(fim, ff, pair)?.negate()),
Rule::leq => Ok(Self::lower_than_or_equal(fim, ff, pair)?),
Rule::less => Ok(Self::lower_than(fim, ff, pair)?),
Rule::between => Ok(Self::between(fim, ff, pair)?),
Rule::not => Ok(Self::from_pairs(fim, ff, pair.into_inner())?.negate()),
Rule::prgm => Self::from_pairs(fim, ff, pair.into_inner()),
Rule::term => Self::from_pairs(fim, ff, pair.into_inner()),
_ => unreachable!(),
},
|lhs: anyhow::Result<Self>, op: Pair<Rule>, rhs: anyhow::Result<Self>| {
match op.as_rule() {
Rule::or => Ok(Or(Box::new(lhs?), Box::new(rhs?))),
Rule::and => Ok(And(Box::new(lhs?), Box::new(rhs?))),
_ => unreachable!(),
}
},
)
}
fn negate(self) -> FacetCondition {
match self {
OperatorI64(fid, op) => match op.negate() {
(op, None) => OperatorI64(fid, op),
(a, Some(b)) => Or(Box::new(OperatorI64(fid, a)), Box::new(OperatorI64(fid, b))),
},
OperatorF64(fid, op) => match op.negate() {
(op, None) => OperatorF64(fid, op),
(a, Some(b)) => Or(Box::new(OperatorF64(fid, a)), Box::new(OperatorF64(fid, b))),
},
OperatorString(fid, op) => OperatorString(fid, op.negate()),
Or(a, b) => And(Box::new(a.negate()), Box::new(b.negate())),
And(a, b) => Or(Box::new(a.negate()), Box::new(b.negate())),
}
}
fn between(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let lvalue = items.next().unwrap();
let rvalue = items.next().unwrap();
match ftype {
FacetType::Integer => {
let lvalue = pest_parse(lvalue)?;
let rvalue = pest_parse(rvalue)?;
Ok(OperatorI64(fid, Between(lvalue, rvalue)))
},
FacetType::Float => {
let lvalue = pest_parse(lvalue)?;
let rvalue = pest_parse(rvalue)?;
Ok(OperatorF64(fid, Between(lvalue, rvalue)))
},
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn equal(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, Equal(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, Equal(pest_parse(value)?))),
FacetType::String => Ok(OperatorString(fid, FacetStringOperator::equal(value.as_str()))),
}
}
fn greater_than(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, GreaterThan(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, GreaterThan(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn greater_than_or_equal(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, GreaterThanOrEqual(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, GreaterThanOrEqual(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn lower_than(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, LowerThan(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, LowerThan(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
fn lower_than_or_equal(
fields_ids_map: &FieldsIdsMap,
faceted_fields: &HashMap<u8, FacetType>,
item: Pair<Rule>,
) -> anyhow::Result<FacetCondition>
{
let item_span = item.as_span();
let mut items = item.into_inner();
let (fid, ftype) = get_field_id_facet_type(fields_ids_map, faceted_fields, &mut items)?;
let value = items.next().unwrap();
match ftype {
FacetType::Integer => Ok(OperatorI64(fid, LowerThanOrEqual(pest_parse(value)?))),
FacetType::Float => Ok(OperatorF64(fid, LowerThanOrEqual(pest_parse(value)?))),
FacetType::String => {
Err(PestError::<Rule>::new_from_span(
ErrorVariant::CustomError {
message: "invalid operator on a faceted string".to_string(),
},
item_span,
).into())
},
}
}
}
impl FacetCondition {
/// Aggregates the documents ids that are part of the specified range automatically
/// going deeper through the levels.
fn explore_facet_levels<'t, T: 't, KC>(
fn new(
rtxn: &'t heed::RoTxn,
db: heed::Database<ByteSlice, CboRoaringBitmapCodec>,
field_id: u8,
db: Database<KC, CboRoaringBitmapCodec>,
field_id: FieldId,
level: u8,
left: Bound<T>,
right: Bound<T>,
output: &mut RoaringBitmap,
) -> anyhow::Result<()>
where
T: Copy + PartialEq + PartialOrd + Bounded + Debug,
KC: heed::BytesDecode<'t, DItem = (u8, u8, T, T)>,
KC: for<'x> heed::BytesEncode<'x, EItem = (u8, u8, T, T)>,
) -> heed::Result<FacetRange<'t, T, KC>>
{
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 => {
return Self::explore_facet_levels::<T, KC>(rtxn, db, field_id, 0, left, right, output);
},
// lower TO upper when lower > upper must return no result
(Included(l), Included(r)) if l > r => return Ok(()),
(Included(l), Excluded(r)) if l >= r => return Ok(()),
(Excluded(l), Excluded(r)) if l >= r => return Ok(()),
(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 left_bound = match left {
Included(left) => Included((field_id, level, left, T::min_value())),
Excluded(left) => Excluded((field_id, level, left, T::min_value())),
Unbounded => Unbounded,
Unbounded => Included((field_id, level, T::min_value(), T::min_value())),
};
let right_bound = Included((field_id, level, T::max_value(), T::max_value()));
// We also make sure that we don't decode the data before we are sure we must return it.
let iter = db
.remap_key_type::<KC>()
.lazily_decode_data()
.range(rtxn, &(left_bound, right_bound))?
.take_while(|r| r.as_ref().map_or(true, |((.., r), _)| {
match right {
Included(right) => *r <= right,
Excluded(right) => *r < right,
let iter = db.lazily_decode_data().range(rtxn, &(left_bound, right_bound))?;
Ok(FacetRange { iter, end: right })
}
}
impl<'t, T, KC> Iterator for FacetRange<'t, T, KC>
where
KC: for<'a> BytesEncode<'a, EItem = (FieldId, u8, T, T)>,
KC: BytesDecode<'t, DItem = (FieldId, u8, T, T)>,
T: PartialOrd + Copy,
{
type Item = heed::Result<((FieldId, u8, T, T), RoaringBitmap)>;
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,
}
}))
.map(|r| r.and_then(|(key, lazy)| lazy.decode().map(|data| (key, data))));
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.union_with(&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_levels::<T, KC>(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_levels::<T, KC>(rtxn, db, field_id, deeper_level, sub_left, right, output)?;
};
if must_be_returned {
match docids.decode() {
Ok(docids) => Some(Ok(((fid, level, left, right), docids))),
Err(e) => Some(Err(e)),
}
} else {
None
}
},
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_levels::<T, KC>(rtxn, db, field_id, deeper_level, left, right, output)?;
},
Some(Err(e)) => Some(Err(e)),
None => None,
}
Ok(())
}
}
fn evaluate_number_operator<'t, T: 't, KC>(
struct FacetRevRange<'t, T: 't, KC> {
iter: RoRevRange<'t, KC, LazyDecode<CboRoaringBitmapCodec>>,
end: Bound<T>,
}
impl<'t, T: 't, KC> FacetRevRange<'t, T, KC>
where
KC: for<'a> BytesEncode<'a, EItem = (FieldId, u8, T, T)>,
T: PartialOrd + Copy + Bounded,
{
fn new(
rtxn: &'t heed::RoTxn,
index: &Index,
db: heed::Database<ByteSlice, CboRoaringBitmapCodec>,
field_id: u8,
operator: FacetNumberOperator<T>,
) -> anyhow::Result<RoaringBitmap>
where
T: Copy + PartialEq + PartialOrd + Bounded + Debug,
KC: heed::BytesDecode<'t, DItem = (u8, u8, T, T)>,
KC: for<'x> heed::BytesEncode<'x, EItem = (u8, u8, T, T)>,
db: Database<KC, CboRoaringBitmapCodec>,
field_id: FieldId,
level: u8,
left: Bound<T>,
right: Bound<T>,
) -> heed::Result<FacetRevRange<'t, T, KC>>
{
// Make sure we always bound the ranges with the field id and the level,
// as the facets values are all in the same database and prefixed by the
// field id and the level.
let (left, right) = match operator {
GreaterThan(val) => (Excluded(val), Included(T::max_value())),
GreaterThanOrEqual(val) => (Included(val), Included(T::max_value())),
Equal(val) => (Included(val), Included(val)),
NotEqual(val) => {
let all_documents_ids = index.faceted_documents_ids(rtxn, field_id)?;
let docids = Self::evaluate_number_operator::<T, KC>(rtxn, index, db, field_id, Equal(val))?;
return Ok(all_documents_ids - docids);
},
LowerThan(val) => (Included(T::min_value()), Excluded(val)),
LowerThanOrEqual(val) => (Included(T::min_value()), Included(val)),
Between(left, right) => (Included(left), Included(right)),
let left_bound = match left {
Included(left) => Included((field_id, level, left, T::min_value())),
Excluded(left) => Excluded((field_id, level, left, T::min_value())),
Unbounded => Included((field_id, level, T::min_value(), T::min_value())),
};
let right_bound = Included((field_id, level, T::max_value(), T::max_value()));
let iter = db.lazily_decode_data().rev_range(rtxn, &(left_bound, right_bound))?;
Ok(FacetRevRange { iter, end: right })
}
}
// Ask for the biggest value that can exist for this specific field, if it exists
// that's fine if it don't, the value just before will be returned instead.
let biggest_level = db
.remap_types::<KC, DecodeIgnore>()
.get_lower_than_or_equal_to(rtxn, &(field_id, u8::MAX, T::max_value(), T::max_value()))?
.and_then(|((id, level, _, _), _)| if id == field_id { Some(level) } else { None });
impl<'t, T, KC> Iterator for FacetRevRange<'t, T, KC>
where
KC: for<'a> BytesEncode<'a, EItem = (FieldId, u8, T, T)>,
KC: BytesDecode<'t, DItem = (FieldId, u8, T, T)>,
T: PartialOrd + Copy,
{
type Item = heed::Result<((FieldId, u8, T, T), RoaringBitmap)>;
match biggest_level {
Some(level) => {
let mut output = RoaringBitmap::new();
Self::explore_facet_levels::<T, KC>(rtxn, db, field_id, level, left, right, &mut output)?;
Ok(output)
},
None => Ok(RoaringBitmap::new()),
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,
}
}
}
}
fn evaluate_string_operator(
rtxn: &heed::RoTxn,
index: &Index,
db: heed::Database<FacetValueStringCodec, CboRoaringBitmapCodec>,
field_id: u8,
operator: &FacetStringOperator,
) -> anyhow::Result<RoaringBitmap>
pub struct FacetIter<'t, T: 't, KC> {
rtxn: &'t heed::RoTxn<'t>,
db: Database<KC, CboRoaringBitmapCodec>,
field_id: FieldId,
level_iters: Vec<(RoaringBitmap, Either<FacetRange<'t, T, KC>, FacetRevRange<'t, T, KC>>)>,
}
impl<'t, T, KC> FacetIter<'t, T, KC>
where
KC: heed::BytesDecode<'t, DItem = (FieldId, u8, T, T)>,
KC: for<'a> BytesEncode<'a, EItem = (FieldId, u8, T, T)>,
T: PartialOrd + Copy + Bounded,
{
pub fn new(
rtxn: &'t heed::RoTxn,
index: &'t Index,
field_id: FieldId,
documents_ids: RoaringBitmap,
) -> heed::Result<FacetIter<'t, T, KC>>
{
match operator {
FacetStringOperator::Equal(string) => {
match db.get(rtxn, &(field_id, string))? {
Some(docids) => Ok(docids),
None => Ok(RoaringBitmap::new())
let db = index.facet_field_id_value_docids.remap_key_type::<KC>();
let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
let highest_iter = FacetRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
Ok(FacetIter { rtxn, db, field_id, level_iters: vec![(documents_ids, Left(highest_iter))] })
}
pub fn new_reverse(
rtxn: &'t heed::RoTxn,
index: &'t Index,
field_id: FieldId,
documents_ids: RoaringBitmap,
) -> heed::Result<FacetIter<'t, T, KC>>
{
let db = index.facet_field_id_value_docids.remap_key_type::<KC>();
let highest_level = Self::highest_level(rtxn, db, field_id)?.unwrap_or(0);
let highest_iter = FacetRevRange::new(rtxn, db, field_id, highest_level, Unbounded, Unbounded)?;
Ok(FacetIter { rtxn, db, field_id, level_iters: vec![(documents_ids, Right(highest_iter))] })
}
fn highest_level<X>(rtxn: &'t heed::RoTxn, db: Database<KC, X>, fid: FieldId) -> heed::Result<Option<u8>> {
let level = db.remap_types::<ByteSlice, DecodeIgnore>()
.prefix_iter(rtxn, &[fid][..])?
.remap_key_type::<KC>()
.last().transpose()?
.map(|((_, level, _, _), _)| level);
Ok(level)
}
}
impl<'t, T: 't, KC> Iterator for FacetIter<'t, T, KC>
where
KC: heed::BytesDecode<'t, DItem = (FieldId, u8, T, T)>,
KC: for<'x> heed::BytesEncode<'x, EItem = (FieldId, u8, T, T)>,
T: PartialOrd + Copy + Bounded + Debug,
{
type Item = heed::Result<(T, 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;
}
},
FacetStringOperator::NotEqual(string) => {
let all_documents_ids = index.faceted_documents_ids(rtxn, field_id)?;
let op = FacetStringOperator::Equal(string.clone());
let docids = Self::evaluate_string_operator(rtxn, index, db, field_id, &op)?;
Ok(all_documents_ids - docids)
},
}
}
pub fn evaluate(
&self,
rtxn: &heed::RoTxn,
index: &Index,
) -> anyhow::Result<RoaringBitmap>
{
let db = index.facet_field_id_value_docids;
match self {
OperatorI64(fid, op) => {
Self::evaluate_number_operator::<i64, FacetLevelValueI64Codec>(rtxn, index, db, *fid, *op)
},
OperatorF64(fid, op) => {
Self::evaluate_number_operator::<f64, FacetLevelValueF64Codec>(rtxn, index, db, *fid, *op)
},
OperatorString(fid, op) => {
let db = db.remap_key_type::<FacetValueStringCodec>();
Self::evaluate_string_operator(rtxn, index, db, *fid, op)
},
Or(lhs, rhs) => {
let lhs = lhs.evaluate(rtxn, index)?;
let rhs = rhs.evaluate(rtxn, index)?;
Ok(lhs | rhs)
},
And(lhs, rhs) => {
let lhs = lhs.evaluate(rtxn, index)?;
let rhs = rhs.evaluate(rtxn, index)?;
Ok(lhs & rhs)
},
match result {
Ok(((_fid, level, left, right), mut docids)) => {
docids.intersect_with(&documents_ids);
if !docids.is_empty() {
documents_ids.difference_with(&docids);
if level == 0 {
debug!("found {:?} at {:?}", docids, left);
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);
debug!("calling with {:?} to {:?} (level {}) to find {:?}",
left, right, level - 1, docids,
);
let result = if is_ascending {
FacetRange::new(rtxn, db, fid, level - 1, left, right).map(Left)
} else {
FacetRevRange::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();
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::update::Settings;
use heed::EnvOpenOptions;
use maplit::hashmap;
#[test]
fn string() {
let path = tempfile::tempdir().unwrap();
let mut options = EnvOpenOptions::new();
options.map_size(10 * 1024 * 1024); // 10 MB
let index = Index::new(options, &path).unwrap();
// Set the faceted fields to be the channel.
let mut wtxn = index.write_txn().unwrap();
let mut builder = Settings::new(&mut wtxn, &index);
builder.set_faceted_fields(hashmap!{ "channel".into() => "string".into() });
builder.execute(|_| ()).unwrap();
wtxn.commit().unwrap();
// Test that the facet condition is correctly generated.
let rtxn = index.read_txn().unwrap();
let condition = FacetCondition::from_str(&rtxn, &index, "channel = ponce").unwrap();
let expected = OperatorString(1, FacetStringOperator::equal("Ponce"));
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(&rtxn, &index, "channel != ponce").unwrap();
let expected = OperatorString(1, FacetStringOperator::not_equal("ponce"));
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(&rtxn, &index, "NOT channel = ponce").unwrap();
let expected = OperatorString(1, FacetStringOperator::not_equal("ponce"));
assert_eq!(condition, expected);
}
#[test]
fn i64() {
let path = tempfile::tempdir().unwrap();
let mut options = EnvOpenOptions::new();
options.map_size(10 * 1024 * 1024); // 10 MB
let index = Index::new(options, &path).unwrap();
// Set the faceted fields to be the channel.
let mut wtxn = index.write_txn().unwrap();
let mut builder = Settings::new(&mut wtxn, &index);
builder.set_faceted_fields(hashmap!{ "timestamp".into() => "integer".into() });
builder.execute(|_| ()).unwrap();
wtxn.commit().unwrap();
// Test that the facet condition is correctly generated.
let rtxn = index.read_txn().unwrap();
let condition = FacetCondition::from_str(&rtxn, &index, "timestamp 22 TO 44").unwrap();
let expected = OperatorI64(1, Between(22, 44));
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(&rtxn, &index, "NOT timestamp 22 TO 44").unwrap();
let expected = Or(
Box::new(OperatorI64(1, LowerThan(22))),
Box::new(OperatorI64(1, GreaterThan(44))),
);
assert_eq!(condition, expected);
}
#[test]
fn parentheses() {
let path = tempfile::tempdir().unwrap();
let mut options = EnvOpenOptions::new();
options.map_size(10 * 1024 * 1024); // 10 MB
let index = Index::new(options, &path).unwrap();
// Set the faceted fields to be the channel.
let mut wtxn = index.write_txn().unwrap();
let mut builder = Settings::new(&mut wtxn, &index);
builder.set_searchable_fields(vec!["channel".into(), "timestamp".into()]); // to keep the fields order
builder.set_faceted_fields(hashmap!{
"channel".into() => "string".into(),
"timestamp".into() => "integer".into(),
});
builder.execute(|_| ()).unwrap();
wtxn.commit().unwrap();
// Test that the facet condition is correctly generated.
let rtxn = index.read_txn().unwrap();
let condition = FacetCondition::from_str(
&rtxn, &index,
"channel = gotaga OR (timestamp 22 TO 44 AND channel != ponce)",
).unwrap();
let expected = Or(
Box::new(OperatorString(0, FacetStringOperator::equal("gotaga"))),
Box::new(And(
Box::new(OperatorI64(1, Between(22, 44))),
Box::new(OperatorString(0, FacetStringOperator::not_equal("ponce"))),
))
);
assert_eq!(condition, expected);
let condition = FacetCondition::from_str(
&rtxn, &index,
"channel = gotaga OR NOT (timestamp 22 TO 44 AND channel != ponce)",
).unwrap();
let expected = Or(
Box::new(OperatorString(0, FacetStringOperator::equal("gotaga"))),
Box::new(Or(
Box::new(Or(
Box::new(OperatorI64(1, LowerThan(22))),
Box::new(OperatorI64(1, GreaterThan(44))),
)),
Box::new(OperatorString(0, FacetStringOperator::equal("ponce"))),
)),
);
assert_eq!(condition, expected);
}
}

143
src/search/mod.rs
View File

@ -1,19 +1,26 @@
use std::borrow::Cow;
use std::collections::{HashMap, HashSet};
use std::fmt;
use std::time::Instant;
use anyhow::{bail, Context};
use fst::{IntoStreamer, Streamer};
use levenshtein_automata::DFA;
use levenshtein_automata::LevenshteinAutomatonBuilder as LevBuilder;
use log::debug;
use once_cell::sync::Lazy;
use ordered_float::OrderedFloat;
use roaring::bitmap::RoaringBitmap;
use crate::facet::FacetType;
use crate::heed_codec::facet::{FacetLevelValueF64Codec, FacetLevelValueI64Codec};
use crate::heed_codec::facet::{FieldDocIdFacetF64Codec, FieldDocIdFacetI64Codec};
use crate::mdfs::Mdfs;
use crate::query_tokens::{QueryTokens, QueryToken};
use crate::{Index, DocumentId};
use crate::{Index, FieldId, DocumentId, Criterion};
pub use self::facet::FacetCondition;
pub use self::facet::{FacetCondition, FacetNumberOperator, FacetStringOperator};
pub use self::facet::{FacetIter};
// Building these factories is not free.
static LEVDIST0: Lazy<LevBuilder> = Lazy::new(|| LevBuilder::new(0, true));
@ -144,6 +151,84 @@ impl<'a> Search<'a> {
candidates
}
fn facet_ordered(
&self,
field_id: FieldId,
facet_type: FacetType,
ascending: bool,
documents_ids: RoaringBitmap,
limit: usize,
) -> anyhow::Result<Vec<DocumentId>>
{
let mut limit_tmp = limit;
let mut output = Vec::new();
match facet_type {
FacetType::Float => {
if documents_ids.len() <= 1000 {
let db = self.index.field_id_docid_facet_values.remap_key_type::<FieldDocIdFacetF64Codec>();
let mut docids_values = Vec::with_capacity(documents_ids.len() as usize);
for docid in documents_ids {
let left = (field_id, docid, f64::MIN);
let right = (field_id, docid, f64::MAX);
let mut iter = db.range(self.rtxn, &(left..=right))?;
let entry = if ascending { iter.next() } else { iter.last() };
if let Some(((_, _, value), ())) = entry.transpose()? {
docids_values.push((docid, OrderedFloat(value)));
}
}
docids_values.sort_unstable_by_key(|(_, value)| *value);
let iter = docids_values.into_iter().map(|(id, _)| id).take(limit);
if ascending { Ok(iter.collect()) } else { Ok(iter.rev().collect()) }
} else {
let facet_fn = if ascending {
FacetIter::<f64, FacetLevelValueF64Codec>::new
} else {
FacetIter::<f64, FacetLevelValueF64Codec>::new_reverse
};
for result in facet_fn(self.rtxn, self.index, field_id, documents_ids)? {
let (_val, docids) = result?;
limit_tmp = limit_tmp.saturating_sub(docids.len() as usize);
output.push(docids);
if limit_tmp == 0 { break }
}
Ok(output.into_iter().flatten().take(limit).collect())
}
},
FacetType::Integer => {
if documents_ids.len() <= 1000 {
let db = self.index.field_id_docid_facet_values.remap_key_type::<FieldDocIdFacetI64Codec>();
let mut docids_values = Vec::with_capacity(documents_ids.len() as usize);
for docid in documents_ids {
let left = (field_id, docid, i64::MIN);
let right = (field_id, docid, i64::MAX);
let mut iter = db.range(self.rtxn, &(left..=right))?;
let entry = if ascending { iter.next() } else { iter.last() };
if let Some(((_, _, value), ())) = entry.transpose()? {
docids_values.push((docid, value));
}
}
docids_values.sort_unstable_by_key(|(_, value)| *value);
let iter = docids_values.into_iter().map(|(id, _)| id).take(limit);
if ascending { Ok(iter.collect()) } else { Ok(iter.rev().collect()) }
} else {
let facet_fn = if ascending {
FacetIter::<i64, FacetLevelValueI64Codec>::new
} else {
FacetIter::<i64, FacetLevelValueI64Codec>::new_reverse
};
for result in facet_fn(self.rtxn, self.index, field_id, documents_ids)? {
let (_val, docids) = result?;
limit_tmp = limit_tmp.saturating_sub(docids.len() as usize);
output.push(docids);
if limit_tmp == 0 { break }
}
Ok(output.into_iter().flatten().take(limit).collect())
}
},
FacetType::String => bail!("criteria facet type must be a number"),
}
}
pub fn execute(&self) -> anyhow::Result<SearchResult> {
let limit = self.limit;
let fst = self.index.words_fst(self.rtxn)?;
@ -155,13 +240,34 @@ impl<'a> Search<'a> {
};
// We create the original candidates with the facet conditions results.
let before = Instant::now();
let facet_candidates = match &self.facet_condition {
Some(condition) => Some(condition.evaluate(self.rtxn, self.index)?),
None => None,
};
debug!("facet candidates: {:?}", facet_candidates);
debug!("facet candidates: {:?} took {:.02?}", facet_candidates, before.elapsed());
let order_by_facet = {
let criteria = self.index.criteria(self.rtxn)?;
let result = criteria.into_iter().flat_map(|criterion| {
match criterion {
Criterion::Asc(fid) => Some((fid, true)),
Criterion::Desc(fid) => Some((fid, false)),
_ => None
}
}).next();
match result {
Some((fid, is_ascending)) => {
let faceted_fields = self.index.faceted_fields(self.rtxn)?;
let ftype = *faceted_fields.get(&fid).context("unknown field id")?;
Some((fid, ftype, is_ascending))
},
None => None,
}
};
let before = Instant::now();
let (candidates, derived_words) = match (facet_candidates, derived_words) {
(Some(mut facet_candidates), Some(derived_words)) => {
let words_candidates = Self::compute_candidates(&derived_words);
@ -174,17 +280,28 @@ impl<'a> Search<'a> {
(Some(facet_candidates), None) => {
// If the query is not set or results in no DFAs but
// there is some facet conditions we return a placeholder.
let documents_ids = facet_candidates.iter().take(limit).collect();
let documents_ids = match order_by_facet {
Some((fid, ftype, is_ascending)) => {
self.facet_ordered(fid, ftype, is_ascending, facet_candidates, limit)?
},
None => facet_candidates.iter().take(limit).collect(),
};
return Ok(SearchResult { documents_ids, ..Default::default() })
},
(None, None) => {
// If the query is not set or results in no DFAs we return a placeholder.
let documents_ids = self.index.documents_ids(self.rtxn)?.iter().take(limit).collect();
let documents_ids = self.index.documents_ids(self.rtxn)?;
let documents_ids = match order_by_facet {
Some((fid, ftype, is_ascending)) => {
self.facet_ordered(fid, ftype, is_ascending, documents_ids, limit)?
},
None => documents_ids.iter().take(limit).collect(),
};
return Ok(SearchResult { documents_ids, ..Default::default() })
},
};
debug!("candidates: {:?}", candidates);
debug!("candidates: {:?} took {:.02?}", candidates, before.elapsed());
// The mana depth first search is a revised DFS that explore
// solutions in the order of their proximities.
@ -203,7 +320,19 @@ impl<'a> Search<'a> {
}
let found_words = derived_words.into_iter().flat_map(|(w, _)| w).map(|(w, _)| w).collect();
let documents_ids = documents.into_iter().flatten().take(limit).collect();
let documents_ids = match order_by_facet {
Some((fid, ftype, order)) => {
let mut ordered_documents = Vec::new();
for documents_ids in documents {
let docids = self.facet_ordered(fid, ftype, order, documents_ids, limit)?;
ordered_documents.push(docids);
if ordered_documents.iter().map(Vec::len).sum::<usize>() >= limit { break }
}
ordered_documents.into_iter().flatten().take(limit).collect()
},
None => documents.into_iter().flatten().take(limit).collect(),
};
Ok(SearchResult { found_words, documents_ids })
}
}

1
src/subcommand/infos.rs
View File

@ -297,6 +297,7 @@ fn biggest_value_sizes(index: &Index, rtxn: &heed::RoTxn, limit: usize) -> anyho
docid_word_positions,
word_pair_proximity_docids,
facet_field_id_value_docids,
field_id_docid_facet_values: _,
documents,
} = index;

2
src/update/clear_documents.rs
View File

@ -19,6 +19,7 @@ impl<'t, 'u, 'i> ClearDocuments<'t, 'u, 'i> {
docid_word_positions,
word_pair_proximity_docids,
facet_field_id_value_docids,
field_id_docid_facet_values,
documents,
} = self.index;
@ -41,6 +42,7 @@ impl<'t, 'u, 'i> ClearDocuments<'t, 'u, 'i> {
docid_word_positions.clear(self.wtxn)?;
word_pair_proximity_docids.clear(self.wtxn)?;
facet_field_id_value_docids.clear(self.wtxn)?;
field_id_docid_facet_values.clear(self.wtxn)?;
documents.clear(self.wtxn)?;
Ok(number_of_documents)

39
src/update/delete_documents.rs
View File

@ -2,7 +2,9 @@ use fst::IntoStreamer;
use heed::types::ByteSlice;
use roaring::RoaringBitmap;
use crate::facet::FacetType;
use crate::{Index, BEU32, SmallString32, ExternalDocumentsIds};
use crate::heed_codec::facet::{FieldDocIdFacetStringCodec, FieldDocIdFacetF64Codec, FieldDocIdFacetI64Codec};
use super::ClearDocuments;
pub struct DeleteDocuments<'t, 'u, 'i> {
@ -75,6 +77,7 @@ impl<'t, 'u, 'i> DeleteDocuments<'t, 'u, 'i> {
docid_word_positions,
word_pair_proximity_docids,
facet_field_id_value_docids,
field_id_docid_facet_values,
documents,
} = self.index;
@ -186,10 +189,42 @@ impl<'t, 'u, 'i> DeleteDocuments<'t, 'u, 'i> {
// Remove the documents ids from the faceted documents ids.
let faceted_fields = self.index.faceted_fields(self.wtxn)?;
for (field_id, _) in faceted_fields {
for (field_id, facet_type) in faceted_fields {
let mut docids = self.index.faceted_documents_ids(self.wtxn, field_id)?;
docids.difference_with(&self.documents_ids);
self.index.put_faceted_documents_ids(self.wtxn, field_id, &docids)?;
// We delete the entries that are part of the documents ids.
let iter = field_id_docid_facet_values.prefix_iter_mut(self.wtxn, &[field_id])?;
match facet_type {
FacetType::String => {
let mut iter = iter.remap_key_type::<FieldDocIdFacetStringCodec>();
while let Some(result) = iter.next() {
let ((_fid, docid, _value), ()) = result?;
if self.documents_ids.contains(docid) {
iter.del_current()?;
}
}
},
FacetType::Float => {
let mut iter = iter.remap_key_type::<FieldDocIdFacetF64Codec>();
while let Some(result) = iter.next() {
let ((_fid, docid, _value), ()) = result?;
if self.documents_ids.contains(docid) {
iter.del_current()?;
}
}
},
FacetType::Integer => {
let mut iter = iter.remap_key_type::<FieldDocIdFacetI64Codec>();
while let Some(result) = iter.next() {
let ((_fid, docid, _value), ()) = result?;
if self.documents_ids.contains(docid) {
iter.del_current()?;
}
}
},
}
}
// We delete the documents ids that are under the facet field id values.
@ -205,6 +240,8 @@ impl<'t, 'u, 'i> DeleteDocuments<'t, 'u, 'i> {
}
}
drop(iter);
Ok(self.documents_ids.len() as usize)
}
}

8
src/update/index_documents/merge_function.rs
View File

@ -1,6 +1,6 @@
use std::borrow::Cow;
use anyhow::{bail, ensure};
use anyhow::{bail, ensure, Context};
use bstr::ByteSlice as _;
use fst::IntoStreamer;
use roaring::RoaringBitmap;
@ -42,6 +42,12 @@ pub fn docid_word_positions_merge(key: &[u8], _values: &[Cow<[u8]>]) -> anyhow::
bail!("merging docid word positions is an error ({:?})", key.as_bstr())
}
pub fn field_id_docid_facet_values_merge(_key: &[u8], values: &[Cow<[u8]>]) -> anyhow::Result<Vec<u8>> {
let first = values.first().context("no value to merge")?;
ensure!(values.iter().all(|v| v == first), "invalid field id docid facet value merging");
Ok(first.to_vec())
}
pub fn words_pairs_proximities_docids_merge(_key: &[u8], values: &[Cow<[u8]>]) -> anyhow::Result<Vec<u8>> {
cbo_roaring_bitmap_merge(values)
}

23
src/update/index_documents/mod.rs
View File

@ -21,6 +21,7 @@ use self::store::{Store, Readers};
use self::merge_function::{
main_merge, word_docids_merge, words_pairs_proximities_docids_merge,
docid_word_positions_merge, documents_merge, facet_field_value_docids_merge,
field_id_docid_facet_values_merge,
};
pub use self::transform::{Transform, TransformOutput};
@ -395,6 +396,7 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
let mut docid_word_positions_readers = Vec::with_capacity(readers.len());
let mut words_pairs_proximities_docids_readers = Vec::with_capacity(readers.len());
let mut facet_field_value_docids_readers = Vec::with_capacity(readers.len());
let mut field_id_docid_facet_values_readers = Vec::with_capacity(readers.len());
let mut documents_readers = Vec::with_capacity(readers.len());
readers.into_iter().for_each(|readers| {
let Readers {
@ -403,6 +405,7 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
docid_word_positions,
words_pairs_proximities_docids,
facet_field_value_docids,
field_id_docid_facet_values,
documents
} = readers;
main_readers.push(main);
@ -410,6 +413,7 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
docid_word_positions_readers.push(docid_word_positions);
words_pairs_proximities_docids_readers.push(words_pairs_proximities_docids);
facet_field_value_docids_readers.push(facet_field_value_docids);
field_id_docid_facet_values_readers.push(field_id_docid_facet_values);
documents_readers.push(documents);
});
@ -453,6 +457,7 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
docid_word_positions_readers,
documents_readers,
words_pairs_proximities_docids_readers,
field_id_docid_facet_values_readers,
)) as anyhow::Result<_>
})?;
@ -461,6 +466,7 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
docid_word_positions_readers,
documents_readers,
words_pairs_proximities_docids_readers,
field_id_docid_facet_values_readers,
) = readers;
let mut documents_ids = self.index.documents_ids(self.wtxn)?;
@ -488,7 +494,7 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
self.index.put_documents_ids(self.wtxn, &documents_ids)?;
let mut database_count = 0;
let total_databases = 6;
let total_databases = 7;
progress_callback(UpdateIndexingStep::MergeDataIntoFinalDatabase {
databases_seen: 0,
@ -525,6 +531,21 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
total_databases,
});
debug!("Writing the field id docid facet values into LMDB on disk...");
merge_into_lmdb_database(
self.wtxn,
*self.index.field_id_docid_facet_values.as_polymorph(),
field_id_docid_facet_values_readers,
field_id_docid_facet_values_merge,
write_method,
)?;
database_count += 1;
progress_callback(UpdateIndexingStep::MergeDataIntoFinalDatabase {
databases_seen: database_count,
total_databases,
});
debug!("Writing the words pairs proximities docids into LMDB on disk...");
merge_into_lmdb_database(
self.wtxn,

66
src/update/index_documents/store.rs
View File

@ -20,14 +20,15 @@ use tempfile::tempfile;
use crate::facet::FacetType;
use crate::heed_codec::{BoRoaringBitmapCodec, CboRoaringBitmapCodec};
use crate::heed_codec::facet::{FacetValueStringCodec, FacetLevelValueF64Codec, FacetLevelValueI64Codec};
use crate::heed_codec::facet::{FieldDocIdFacetStringCodec, FieldDocIdFacetF64Codec, FieldDocIdFacetI64Codec};
use crate::tokenizer::{simple_tokenizer, only_token};
use crate::update::UpdateIndexingStep;
use crate::{json_to_string, SmallVec8, SmallVec32, SmallString32, Position, DocumentId};
use crate::{json_to_string, SmallVec8, SmallVec32, SmallString32, Position, DocumentId, FieldId};
use super::{MergeFn, create_writer, create_sorter, writer_into_reader};
use super::merge_function::{
main_merge, word_docids_merge, words_pairs_proximities_docids_merge,
facet_field_value_docids_merge,
facet_field_value_docids_merge, field_id_docid_facet_values_merge,
};
const LMDB_MAX_KEY_LENGTH: usize = 511;
@ -42,13 +43,14 @@ pub struct Readers {
pub docid_word_positions: Reader<FileFuse>,
pub words_pairs_proximities_docids: Reader<FileFuse>,
pub facet_field_value_docids: Reader<FileFuse>,
pub field_id_docid_facet_values: Reader<FileFuse>,
pub documents: Reader<FileFuse>,
}
pub struct Store {
// Indexing parameters
searchable_fields: HashSet<u8>,
faceted_fields: HashMap<u8, FacetType>,
searchable_fields: HashSet<FieldId>,
faceted_fields: HashMap<FieldId, FacetType>,
// Caches
word_docids: LinkedHashMap<SmallVec32<u8>, RoaringBitmap>,
word_docids_limit: usize,
@ -65,6 +67,7 @@ pub struct Store {
word_docids_sorter: Sorter<MergeFn>,
words_pairs_proximities_docids_sorter: Sorter<MergeFn>,
facet_field_value_docids_sorter: Sorter<MergeFn>,
field_id_docid_facet_values_sorter: Sorter<MergeFn>,
// MTBL writers
docid_word_positions_writer: Writer<File>,
documents_writer: Writer<File>,
@ -72,8 +75,8 @@ pub struct Store {
impl Store {
pub fn new(
searchable_fields: HashSet<u8>,
faceted_fields: HashMap<u8, FacetType>,
searchable_fields: HashSet<FieldId>,
faceted_fields: HashMap<FieldId, FacetType>,
linked_hash_map_size: Option<usize>,
max_nb_chunks: Option<usize>,
max_memory: Option<usize>,
@ -118,6 +121,14 @@ impl Store {
max_nb_chunks,
max_memory,
);
let field_id_docid_facet_values_sorter = create_sorter(
field_id_docid_facet_values_merge,
chunk_compression_type,
chunk_compression_level,
chunk_fusing_shrink_size,
max_nb_chunks,
Some(1024 * 1024 * 1024), // 1MB
);
let documents_writer = tempfile().and_then(|f| {
create_writer(chunk_compression_type, chunk_compression_level, f)
@ -146,6 +157,7 @@ impl Store {
word_docids_sorter,
words_pairs_proximities_docids_sorter,
facet_field_value_docids_sorter,
field_id_docid_facet_values_sorter,
// MTBL writers
docid_word_positions_writer,
documents_writer,
@ -176,11 +188,13 @@ impl Store {
// Save the documents ids under the facet field id and value we have seen it.
fn insert_facet_values_docid(
&mut self,
field_id: u8,
field_id: FieldId,
field_value: FacetValue,
id: DocumentId,
) -> anyhow::Result<()>
{
Self::write_field_id_docid_facet_value(&mut self.field_id_docid_facet_values_sorter, field_id, id, &field_value)?;
let key = (field_id, field_value);
// if get_refresh finds the element it is assured to be at the end of the linked hash map.
match self.facet_field_value_docids.get_refresh(&key) {
@ -192,7 +206,7 @@ impl Store {
// one element, this way next time we insert we doesn't grow the capacity.
if self.facet_field_value_docids.len() == self.facet_field_value_docids_limit {
// Removing the front element is equivalent to removing the LRU element.
Self::write_docid_facet_field_values(
Self::write_facet_field_value_docids(
&mut self.facet_field_value_docids_sorter,
self.facet_field_value_docids.pop_front(),
)?;
@ -243,7 +257,7 @@ impl Store {
&mut self,
document_id: DocumentId,
words_positions: &mut HashMap<String, SmallVec32<Position>>,
facet_values: &mut HashMap<u8, SmallVec8<FacetValue>>,
facet_values: &mut HashMap<FieldId, SmallVec8<FacetValue>>,
record: &[u8],
) -> anyhow::Result<()>
{
@ -326,11 +340,11 @@ impl Store {
Ok(())
}
fn write_docid_facet_field_values<I>(
fn write_facet_field_value_docids<I>(
sorter: &mut Sorter<MergeFn>,
iter: I,
) -> anyhow::Result<()>
where I: IntoIterator<Item=((u8, FacetValue), RoaringBitmap)>
where I: IntoIterator<Item=((FieldId, FacetValue), RoaringBitmap)>
{
use FacetValue::*;
@ -351,6 +365,29 @@ impl Store {
Ok(())
}
fn write_field_id_docid_facet_value(
sorter: &mut Sorter<MergeFn>,
field_id: FieldId,
document_id: DocumentId,
value: &FacetValue,
) -> anyhow::Result<()>
{
use FacetValue::*;
let result = match value {
String(s) => FieldDocIdFacetStringCodec::bytes_encode(&(field_id, document_id, s)).map(Cow::into_owned),
Float(f) => FieldDocIdFacetF64Codec::bytes_encode(&(field_id, document_id, **f)).map(Cow::into_owned),
Integer(i) => FieldDocIdFacetI64Codec::bytes_encode(&(field_id, document_id, *i)).map(Cow::into_owned),
};
let key = result.context("could not serialize facet key")?;
if lmdb_key_valid_size(&key) {
sorter.insert(&key, &[])?;
}
Ok(())
}
fn write_word_docids<I>(sorter: &mut Sorter<MergeFn>, iter: I) -> anyhow::Result<()>
where I: IntoIterator<Item=(SmallVec32<u8>, RoaringBitmap)>
{
@ -463,7 +500,7 @@ impl Store {
&mut self.words_pairs_proximities_docids_sorter,
self.words_pairs_proximities_docids,
)?;
Self::write_docid_facet_field_values(
Self::write_facet_field_value_docids(
&mut self.facet_field_value_docids_sorter,
self.facet_field_value_docids,
)?;
@ -491,10 +528,14 @@ impl Store {
let mut facet_field_value_docids_wtr = tempfile().and_then(|f| create_writer(comp_type, comp_level, f))?;
self.facet_field_value_docids_sorter.write_into(&mut facet_field_value_docids_wtr)?;
let mut field_id_docid_facet_values_wtr = tempfile().and_then(|f| create_writer(comp_type, comp_level, f))?;
self.field_id_docid_facet_values_sorter.write_into(&mut field_id_docid_facet_values_wtr)?;
let main = writer_into_reader(main_wtr, shrink_size)?;
let word_docids = writer_into_reader(word_docids_wtr, shrink_size)?;
let words_pairs_proximities_docids = writer_into_reader(words_pairs_proximities_docids_wtr, shrink_size)?;
let facet_field_value_docids = writer_into_reader(facet_field_value_docids_wtr, shrink_size)?;
let field_id_docid_facet_values = writer_into_reader(field_id_docid_facet_values_wtr, shrink_size)?;
let docid_word_positions = writer_into_reader(self.docid_word_positions_writer, shrink_size)?;
let documents = writer_into_reader(self.documents_writer, shrink_size)?;
@ -504,6 +545,7 @@ impl Store {
docid_word_positions,
words_pairs_proximities_docids,
facet_field_value_docids,
field_id_docid_facet_values,
documents,
})
}

8
src/update/index_documents/transform.rs
View File

@ -10,13 +10,13 @@ use log::info;
use roaring::RoaringBitmap;
use serde_json::{Map, Value};
use crate::{BEU32, MergeFn, Index, FieldsIdsMap, ExternalDocumentsIds};
use crate::{BEU32, MergeFn, Index, FieldId, FieldsIdsMap, ExternalDocumentsIds};
use crate::update::{AvailableDocumentsIds, UpdateIndexingStep};
use super::merge_function::merge_two_obkvs;
use super::{create_writer, create_sorter, IndexDocumentsMethod};
pub struct TransformOutput {
pub primary_key: u8,
pub primary_key: FieldId,
pub fields_ids_map: FieldsIdsMap,
pub external_documents_ids: ExternalDocumentsIds<'static>,
pub new_documents_ids: RoaringBitmap,
@ -365,7 +365,7 @@ impl Transform<'_, '_> {
fn output_from_sorter<F>(
self,
sorter: grenad::Sorter<MergeFn>,
primary_key: u8,
primary_key: FieldId,
fields_ids_map: FieldsIdsMap,
approximate_number_of_documents: usize,
mut external_documents_ids: ExternalDocumentsIds<'_>,
@ -477,7 +477,7 @@ impl Transform<'_, '_> {
// TODO this can be done in parallel by using the rayon `ThreadPool`.
pub fn remap_index_documents(
self,
primary_key: u8,
primary_key: FieldId,
fields_ids_map: FieldsIdsMap,
) -> anyhow::Result<TransformOutput>
{

44
src/update/settings.rs
View File

@ -8,7 +8,7 @@ use rayon::ThreadPool;
use crate::update::index_documents::{Transform, IndexDocumentsMethod};
use crate::update::{ClearDocuments, IndexDocuments, UpdateIndexingStep};
use crate::facet::FacetType;
use crate::{Index, FieldsIdsMap};
use crate::{Index, FieldsIdsMap, Criterion};
pub struct Settings<'a, 't, 'u, 'i> {
wtxn: &'t mut heed::RwTxn<'i, 'u>,
@ -27,6 +27,7 @@ pub struct Settings<'a, 't, 'u, 'i> {
searchable_fields: Option<Option<Vec<String>>>,
displayed_fields: Option<Option<Vec<String>>>,
faceted_fields: Option<HashMap<String, String>>,
criteria: Option<Option<Vec<String>>>,
}
impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
@ -45,6 +46,7 @@ impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
searchable_fields: None,
displayed_fields: None,
faceted_fields: None,
criteria: None,
}
}
@ -68,6 +70,14 @@ impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
self.faceted_fields = Some(names_facet_types);
}
pub fn reset_criteria(&mut self) {
self.criteria = Some(None);
}
pub fn set_criteria(&mut self, criteria: Vec<String>) {
self.criteria = Some(Some(criteria));
}
pub fn execute<F>(self, progress_callback: F) -> anyhow::Result<()>
where
F: Fn(UpdateIndexingStep) + Sync
@ -75,6 +85,7 @@ impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
let mut updated_searchable_fields = None;
let mut updated_faceted_fields = None;
let mut updated_displayed_fields = None;
let mut updated_criteria = None;
// Construct the new FieldsIdsMap based on the searchable fields order.
let fields_ids_map = self.index.fields_ids_map(self.wtxn)?;
@ -113,9 +124,8 @@ impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
None => fields_ids_map.insert("id").context("field id limit reached")?,
};
let current_faceted_fields = self.index.faceted_fields(self.wtxn)?;
if let Some(fields_names_facet_types) = self.faceted_fields {
let current_faceted_fields = self.index.faceted_fields(self.wtxn)?;
let mut faceted_fields = HashMap::new();
for (name, sftype) in fields_names_facet_types {
let ftype = FacetType::from_str(&sftype).with_context(|| format!("parsing facet type {:?}", sftype))?;
@ -147,6 +157,25 @@ impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
}
}
if let Some(criteria) = self.criteria {
match criteria {
Some(criteria_names) => {
let mut new_criteria = Vec::new();
for name in criteria_names {
let criterion = Criterion::from_str(&mut fields_ids_map, &name)?;
if let Some(fid) = criterion.field_id() {
let name = fields_ids_map.name(fid).unwrap();
let faceted_fields = updated_faceted_fields.as_ref().unwrap_or(&current_faceted_fields);
ensure!(faceted_fields.contains_key(&fid), "criterion field {} must be faceted", name);
}
new_criteria.push(criterion);
}
updated_criteria = Some(Some(new_criteria));
},
None => updated_criteria = Some(None),
}
}
// If any setting have modified any of the datastructures it means that we need
// to retrieve the documents and then reindex then with the new settings.
if updated_searchable_fields.is_some() || updated_faceted_fields.is_some() {
@ -202,14 +231,19 @@ impl<'a, 't, 'u, 'i> Settings<'a, 't, 'u, 'i> {
}
if let Some(displayed_fields) = updated_displayed_fields {
// We write the displayed fields into the database here
// to make sure that the right fields are displayed.
match displayed_fields {
Some(fields) => self.index.put_displayed_fields(self.wtxn, &fields)?,
None => self.index.delete_displayed_fields(self.wtxn).map(drop)?,
}
}
if let Some(criteria) = updated_criteria {
match criteria {
Some(criteria) => self.index.put_criteria(self.wtxn, &criteria)?,
None => self.index.delete_criteria(self.wtxn).map(drop)?,
}
}
Ok(())
}
}