MeiliSearch/meilidb-core/src/raw_document.rs

142 lines
4.6 KiB
Rust
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use std::sync::Arc;
use std::fmt;
use sdset::SetBuf;
use slice_group_by::GroupBy;
use crate::{TmpMatch, DocumentId, Highlight};
#[derive(Clone)]
pub struct RawDocument {
pub id: DocumentId,
pub matches: SharedMatches,
pub highlights: Vec<Highlight>,
}
impl RawDocument {
fn new(id: DocumentId, matches: SharedMatches, highlights: Vec<Highlight>) -> RawDocument {
RawDocument { id, matches, highlights }
}
pub fn query_index(&self) -> &[u32] {
let r = self.matches.range;
// it is safe because construction/modifications
// can only be done in this module
unsafe { &self.matches.matches.query_index.get_unchecked(r.start..r.end) }
}
pub fn distance(&self) -> &[u8] {
let r = self.matches.range;
// it is safe because construction/modifications
// can only be done in this module
unsafe { &self.matches.matches.distance.get_unchecked(r.start..r.end) }
}
pub fn attribute(&self) -> &[u16] {
let r = self.matches.range;
// it is safe because construction/modifications
// can only be done in this module
unsafe { &self.matches.matches.attribute.get_unchecked(r.start..r.end) }
}
pub fn word_index(&self) -> &[u16] {
let r = self.matches.range;
// it is safe because construction/modifications
// can only be done in this module
unsafe { &self.matches.matches.word_index.get_unchecked(r.start..r.end) }
}
pub fn is_exact(&self) -> &[bool] {
let r = self.matches.range;
// it is safe because construction/modifications
// can only be done in this module
unsafe { &self.matches.matches.is_exact.get_unchecked(r.start..r.end) }
}
}
impl fmt::Debug for RawDocument {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str("RawDocument {\r\n")?;
f.write_fmt(format_args!("{:>15}: {:?},\r\n", "id", self.id))?;
f.write_fmt(format_args!("{:>15}: {:^5?},\r\n", "query_index", self.query_index()))?;
f.write_fmt(format_args!("{:>15}: {:^5?},\r\n", "distance", self.distance()))?;
f.write_fmt(format_args!("{:>15}: {:^5?},\r\n", "attribute", self.attribute()))?;
f.write_fmt(format_args!("{:>15}: {:^5?},\r\n", "word_index", self.word_index()))?;
f.write_fmt(format_args!("{:>15}: {:^5?},\r\n", "is_exact", self.is_exact()))?;
f.write_str("}")?;
Ok(())
}
}
pub fn raw_documents_from(
matches: SetBuf<(DocumentId, TmpMatch)>,
highlights: SetBuf<(DocumentId, Highlight)>,
) -> Vec<RawDocument>
{
let mut docs_ranges: Vec<(_, Range, _)> = Vec::new();
let mut matches2 = Matches::with_capacity(matches.len());
let matches = matches.linear_group_by(|(a, _), (b, _)| a == b);
let highlights = highlights.linear_group_by(|(a, _), (b, _)| a == b);
for (mgroup, hgroup) in matches.zip(highlights) {
debug_assert_eq!(mgroup[0].0, hgroup[0].0);
let document_id = mgroup[0].0;
let start = docs_ranges.last().map(|(_, r, _)| r.end).unwrap_or(0);
let end = start + mgroup.len();
let highlights = hgroup.iter().map(|(_, h)| *h).collect();
docs_ranges.push((document_id, Range { start, end }, highlights));
matches2.extend_from_slice(mgroup);
}
let matches = Arc::new(matches2);
docs_ranges.into_iter().map(|(id, range, highlights)| {
let matches = SharedMatches { range, matches: matches.clone() };
RawDocument::new(id, matches, highlights)
}).collect()
}
#[derive(Debug, Copy, Clone)]
struct Range {
start: usize,
end: usize,
}
#[derive(Clone)]
pub struct SharedMatches {
range: Range,
matches: Arc<Matches>,
}
#[derive(Clone)]
struct Matches {
query_index: Vec<u32>,
distance: Vec<u8>,
attribute: Vec<u16>,
word_index: Vec<u16>,
is_exact: Vec<bool>,
}
impl Matches {
fn with_capacity(cap: usize) -> Matches {
Matches {
query_index: Vec::with_capacity(cap),
distance: Vec::with_capacity(cap),
attribute: Vec::with_capacity(cap),
word_index: Vec::with_capacity(cap),
is_exact: Vec::with_capacity(cap),
}
}
fn extend_from_slice(&mut self, matches: &[(DocumentId, TmpMatch)]) {
for (_, match_) in matches {
self.query_index.push(match_.query_index);
self.distance.push(match_.distance);
self.attribute.push(match_.attribute);
self.word_index.push(match_.word_index);
self.is_exact.push(match_.is_exact);
}
}
}