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Code Issues Releases Wiki Activity

Reintroduce facet deletion functionality

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This commit is contained in:
Loïc Lecrenier 2022-08-31 08:10:45 +02:00 committed by Loïc Lecrenier
parent 6cc91824c1
commit 22d80eeaf9
1 changed files with 62 additions and 77 deletions
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139
milli/src/update/delete_documents.rs
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@ -3,19 +3,21 @@ use std::collections::btree_map::Entry;
use fst::IntoStreamer;
use heed::types::{ByteSlice, Str};
use heed::{BytesDecode, BytesEncode, Database};
use obkv::Key;
use roaring::RoaringBitmap;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use time::OffsetDateTime;
use super::ClearDocuments;
use super::{ClearDocuments, Facets};
use crate::error::{InternalError, SerializationError, UserError};
// use crate::heed_codec::facet::FacetStringZeroBoundsValueCodec;
use crate::heed_codec::facet::new::{FacetGroupValueCodec, FacetKeyCodec, MyByteSlice};
use crate::heed_codec::CboRoaringBitmapCodec;
use crate::index::{db_name, main_key};
use crate::{
DocumentId, ExternalDocumentsIds, FieldId, FieldIdMapMissingEntry, Index, Result,
RoaringBitmapCodec, SmallString32, BEU32,
fields_ids_map, DocumentId, ExternalDocumentsIds, FieldId, FieldIdMapMissingEntry,
FieldsIdsMap, Index, Result, RoaringBitmapCodec, SmallString32, BEU32,
};
pub struct DeleteDocuments<'t, 'u, 'i> {
@ -62,6 +64,7 @@ impl<'t, 'u, 'i> DeleteDocuments<'t, 'u, 'i> {
pub fn execute(mut self) -> Result<DocumentDeletionResult> {
self.index.set_updated_at(self.wtxn, &OffsetDateTime::now_utc())?;
// We retrieve the current documents ids that are in the database.
let mut documents_ids = self.index.documents_ids(self.wtxn)?;
let mut soft_deleted_docids = self.index.soft_deleted_documents_ids(self.wtxn)?;
@ -439,25 +442,27 @@ impl<'t, 'u, 'i> DeleteDocuments<'t, 'u, 'i> {
self.index.put_geo_faceted_documents_ids(self.wtxn, &geo_faceted_doc_ids)?;
}
remove_docids_from_facet_id_docids(
self.wtxn,
self.index,
facet_id_f64_docids.remap_key_type::<FacetKeyCodec<MyByteSlice>>(),
&self.to_delete_docids,
fields_ids_map.clone(),
)?;
remove_docids_from_facet_id_docids(
self.wtxn,
self.index,
facet_id_string_docids.remap_key_type::<FacetKeyCodec<MyByteSlice>>(),
&self.to_delete_docids,
fields_ids_map.clone(),
)?;
// We delete the documents ids that are under the facet field id values.
// TODO: remove_docids_from_facet_field_id_docids(
// self.wtxn,
// facet_id_f64_docids,
// &self.to_delete_docids,
// )?;
// We delete the documents ids that are under the facet field id values.
remove_docids_from_facet_field_id_docids(
remove_docids_from_facet_id_exists_docids(
self.wtxn,
facet_id_exists_docids,
&self.to_delete_docids,
)?;
remove_docids_from_facet_field_id_string_docids(
self.wtxn,
facet_id_string_docids,
&self.to_delete_docids,
)?;
// Remove the documents ids from the faceted documents ids.
for field_id in self.index.faceted_fields_ids(self.wtxn)? {
// Remove docids from the number faceted documents ids
@ -580,67 +585,7 @@ where
Ok(())
}
fn remove_docids_from_facet_field_id_string_docids<'a, C, D>(
wtxn: &'a mut heed::RwTxn,
db: &heed::Database<C, D>,
to_remove: &RoaringBitmap,
) -> crate::Result<()> {
// let db_name = Some(crate::index::db_name::FACET_ID_STRING_DOCIDS);
// let mut iter = db.remap_types::<ByteSlice, ByteSlice>().iter_mut(wtxn)?;
// while let Some(result) = iter.next() {
// let (key, val) = result?;
// match FacetLevelValueU32Codec::bytes_decode(key) {
// Some(_) => {
// // If we are able to parse this key it means it is a facet string group
// // level key. We must then parse the value using the appropriate codec.
// let (group, mut docids) =
// FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_decode(val)
// .ok_or_else(|| SerializationError::Decoding { db_name })?;
// let previous_len = docids.len();
// docids -= to_remove;
// if docids.is_empty() {
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.del_current()? };
// } else if docids.len() != previous_len {
// let key = key.to_owned();
// let val = &(group, docids);
// let value_bytes =
// FacetStringZeroBoundsValueCodec::<CboRoaringBitmapCodec>::bytes_encode(val)
// .ok_or_else(|| SerializationError::Encoding { db_name })?;
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.put_current(&key, &value_bytes)? };
// }
// }
// None => {
// // The key corresponds to a level zero facet string.
// let (original_value, mut docids) =
// FacetStringLevelZeroValueCodec::bytes_decode(val)
// .ok_or_else(|| SerializationError::Decoding { db_name })?;
// let previous_len = docids.len();
// docids -= to_remove;
// if docids.is_empty() {
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.del_current()? };
// } else if docids.len() != previous_len {
// let key = key.to_owned();
// let val = &(original_value, docids);
// let value_bytes = FacetStringLevelZeroValueCodec::bytes_encode(val)
// .ok_or_else(|| SerializationError::Encoding { db_name })?;
// // safety: we don't keep references from inside the LMDB database.
// unsafe { iter.put_current(&key, &value_bytes)? };
// }
// }
// }
// }
Ok(())
}
fn remove_docids_from_facet_field_id_docids<'a, C>(
fn remove_docids_from_facet_id_exists_docids<'a, C>(
wtxn: &'a mut heed::RwTxn,
db: &heed::Database<C, CboRoaringBitmapCodec>,
to_remove: &RoaringBitmap,
@ -665,6 +610,46 @@ where
Ok(())
}
fn remove_docids_from_facet_id_docids<'a>(
wtxn: &'a mut heed::RwTxn,
index: &Index,
db: heed::Database<FacetKeyCodec<MyByteSlice>, FacetGroupValueCodec>,
to_remove: &RoaringBitmap,
fields_ids_map: FieldsIdsMap,
) -> Result<()> {
let mut modified = false;
for field_id in fields_ids_map.ids() {
let mut level0_prefix = vec![];
level0_prefix.extend_from_slice(&field_id.to_be_bytes());
level0_prefix.push(0);
let mut iter = db
.as_polymorph()
.prefix_iter_mut::<_, ByteSlice, FacetGroupValueCodec>(wtxn, &level0_prefix)?;
while let Some(result) = iter.next() {
let (bytes, mut value) = result?;
let previous_len = value.bitmap.len();
value.bitmap -= to_remove;
if value.bitmap.is_empty() {
// safety: we don't keep references from inside the LMDB database.
unsafe { iter.del_current()? };
modified = true;
} else if value.bitmap.len() != previous_len {
let bytes = bytes.to_owned();
// safety: we don't keep references from inside the LMDB database.
unsafe { iter.put_current(&bytes, &value)? };
modified = true;
}
}
}
if !modified {
return Ok(());
}
let builder = Facets::new(index, db);
builder.execute(wtxn)?;
Ok(())
}
#[cfg(test)]
mod tests {