introduce a new settings update system

Cargo.lock

@@ -979,7 +979,6 @@ dependencies = [
  "structopt 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 

datasets/movies/schema.toml

@@ -1,21 +0,0 @@
-# This schema has been generated ...
-# The order in which the attributes are declared is important,
-# it specify the attribute xxx...
-identifier = "id"
-
-[attributes.id]
-displayed = true
-
-[attributes.title]
-displayed = true
-indexed = true
-
-[attributes.overview]
-displayed = true
-indexed = true
-
-[attributes.release_date]
-displayed = true
-
-[attributes.poster]
-displayed = true

datasets/movies/settings.json

@@ -0,0 +1,12 @@
+{
+    "attribute_identifier": "id",
+    "attributes_searchable": ["title", "overview"],
+    "attributes_displayed": [
+        "id",
+        "title",
+        "overview",
+        "release_date",
+        "poster"
+    ],
+    "attributes_ranked": ["release_date"]
+}

meilisearch-core/Cargo.toml

@@ -43,7 +43,6 @@ rustyline = { version = "5.0.0", default-features = false }
 structopt = "0.3.2"
 tempfile = "3.1.0"
 termcolor = "1.0.4"
-toml = "0.5.3"
 
 [[bench]]
 name = "search_benchmark"

meilisearch-core/examples/from_file.rs

@@ -32,9 +32,9 @@ struct IndexCommand {
     #[structopt(parse(from_os_str))]
     csv_data_path: PathBuf,
 
-    /// The path to the schema.
+    /// The path to the settings.
     #[structopt(long, parse(from_os_str))]
-    schema: PathBuf,
+    settings: PathBuf,
 
     #[structopt(long)]
     update_group_size: Option<usize>,
@@ -119,25 +119,14 @@ fn index_command(command: IndexCommand, database: Database) -> Result<(), Box<dy
 
     let db = &database;
 
-    let schema = {
+    let settings = {
-        let string = fs::read_to_string(&command.schema)?;
+        let string = fs::read_to_string(&command.settings)?;
-        toml::from_str(&string).unwrap()
+        serde_json::from_str(&string).unwrap()
     };
 
-    let reader = db.main_read_txn().unwrap();
     let mut update_writer = db.update_write_txn().unwrap();
-    match index.main.schema(&reader)? {
+    index.settings_update(&mut update_writer, settings)?;
-        Some(current_schema) => {
-            if current_schema != schema {
-                return Err(meilisearch_core::Error::SchemaDiffer.into());
-            }
-            update_writer.abort();
-        }
-        None => {
-            index.schema_update(&mut update_writer, schema)?;
     update_writer.commit().unwrap();
-        }
-    }
 
     let mut rdr = if command.csv_data_path.as_os_str() == "-" {
         csv::Reader::from_reader(Box::new(io::stdin()) as Box<dyn Read>)

meilisearch-core/src/database.rs

@@ -353,10 +353,12 @@ impl Database {
 
 #[cfg(test)]
 mod tests {
+
     use super::*;
 
     use crate::criterion::{self, CriteriaBuilder};
     use crate::update::{ProcessedUpdateResult, UpdateStatus};
+    use crate::settings::Settings;
     use crate::{Document, DocumentId};
     use serde::de::IgnoredAny;
     use std::sync::mpsc;
@@ -376,23 +378,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description"],
-                displayed = true
+                    "attributes_displayed": ["name", "description"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut update_writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut update_writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut update_writer, settings).unwrap();
         update_writer.commit().unwrap();
 
         let mut additions = index.documents_addition();
@@ -439,23 +438,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description"],
-                displayed = true
+                    "attributes_displayed": ["name", "description"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut update_writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut update_writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut update_writer, settings).unwrap();
         update_writer.commit().unwrap();
 
         let mut additions = index.documents_addition();
@@ -501,19 +497,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name"],
-                displayed = true
+                    "attributes_displayed": ["name"]
-                indexed = true
+                }
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut update_writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut update_writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut update_writer, settings).unwrap();
         update_writer.commit().unwrap();
 
         let mut additions = index.documents_addition();
@@ -552,23 +549,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description"],
-                displayed = true
+                    "attributes_displayed": ["name", "description"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut update_writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut update_writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut update_writer, settings).unwrap();
         update_writer.commit().unwrap();
 
         let mut additions = index.documents_addition();
@@ -592,31 +586,21 @@ mod tests {
         let _update_id = additions.finalize(&mut update_writer).unwrap();
         update_writer.commit().unwrap();
 
-        let schema = {
+
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description", "age", "sex"],
-                displayed = true
+                    "attributes_displayed": ["name", "description", "age", "sex"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
-
-                [attributes."age"]
-                displayed = true
-                indexed = true
-
-                [attributes."sex"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut writer = db.update_write_txn().unwrap();
-        let update_id = index.schema_update(&mut writer, schema).unwrap();
+        let update_id = index.settings_update(&mut writer, settings).unwrap();
         writer.commit().unwrap();
 
         // block until the transaction is processed
@@ -670,44 +654,28 @@ mod tests {
         reader.abort();
 
         // try to introduce attributes in the middle of the schema
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description", "city", "age", "sex"],
-                displayed = true
+                    "attributes_displayed": ["name", "description", "city", "age", "sex"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
-
-                [attributes."city"]
-                displayed = true
-                indexed = true
-
-                [attributes."age"]
-                displayed = true
-                indexed = true
-
-                [attributes."sex"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut writer = db.update_write_txn().unwrap();
-        let update_id = index.schema_update(&mut writer, schema).unwrap();
+        let update_id = index.settings_update(&mut writer, settings).unwrap();
         writer.commit().unwrap();
 
         // block until the transaction is processed
         let _ = receiver.iter().find(|id| *id == update_id);
-
         // check if it has been accepted
         let update_reader = db.update_read_txn().unwrap();
         let result = index.update_status(&update_reader, update_id).unwrap();
-        assert_matches!(result, Some(UpdateStatus::Failed { content }) if content.error.is_some());
+        assert_matches!(result, Some(UpdateStatus::Processed { content }) if content.error.is_none());
     }
 
     #[test]
@@ -725,23 +693,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description"],
-                displayed = true
+                    "attributes_displayed": ["name", "description"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut writer, settings).unwrap();
         writer.commit().unwrap();
 
         let mut additions = index.documents_addition();
@@ -805,26 +770,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."id"]
+                    "attributes_searchable": ["name", "description"],
-                displayed = true
+                    "attributes_displayed": ["name", "description", "id"]
-
+                }
-                [attributes."name"]
-                displayed = true
-                indexed = true
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut writer, settings).unwrap();
         writer.commit().unwrap();
 
         let mut additions = index.documents_addition();
@@ -947,24 +906,20 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "description"],
-                displayed = true
+                    "attributes_displayed": ["name", "description"]
-                indexed = true
+                }
-
-                [attributes."description"]
-                displayed = true
-                indexed = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
-        // add a schema to the index
         let mut writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut writer, settings).unwrap();
         writer.commit().unwrap();
 
         // add documents to the index
@@ -1015,23 +970,21 @@ mod tests {
 
         database.set_update_callback(Box::new(update_fn));
 
-        let schema = {
+        let settings = {
             let data = r#"
-                identifier = "id"
+                {
-
+                    "attribute_identifier": "id",
-                [attributes."name"]
+                    "attributes_searchable": ["name", "release_date"],
-                displayed = true
+                    "attributes_displayed": ["name", "release_date"],
-                indexed = true
+                    "attributes_ranked": ["release_date"]
-
+                }
-                [attributes."release_date"]
-                displayed = true
-                ranked = true
             "#;
-            toml::from_str(data).unwrap()
+            let settings: Settings = serde_json::from_str(data).unwrap();
+            settings.into()
         };
 
         let mut writer = db.update_write_txn().unwrap();
-        let _update_id = index.schema_update(&mut writer, schema).unwrap();
+        let _update_id = index.settings_update(&mut writer, settings).unwrap();
         writer.commit().unwrap();
 
         let mut additions = index.documents_addition();

meilisearch-core/src/lib.rs

@@ -16,6 +16,7 @@ mod ranked_map;
 mod raw_document;
 mod reordered_attrs;
 mod update;
+mod settings;
 pub mod criterion;
 pub mod raw_indexer;
 pub mod serde;

meilisearch-core/src/settings.rs

@@ -0,0 +1,85 @@
+use std::collections::{BTreeMap, BTreeSet};
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Default, Clone, Serialize, Deserialize)]
+pub struct Settings {
+    pub ranking_rules: Option<Vec<String>>,
+    pub ranking_distinct: Option<String>,
+    pub attribute_identifier: Option<String>,
+    pub attributes_searchable: Option<Vec<String>>,
+    pub attributes_displayed: Option<Vec<String>>,
+    pub attributes_ranked: Option<Vec<String>>,
+    pub stop_words: Option<BTreeSet<String>>,
+    pub synonyms: Option<BTreeMap<String, Vec<String>>>,
+}
+
+impl Into<SettingsUpdate> for Settings {
+    fn into(self) -> SettingsUpdate {
+        let settings = self.clone();
+        SettingsUpdate {
+            ranking_rules: settings.ranking_rules.into(),
+            ranking_distinct: settings.ranking_distinct.into(),
+            attribute_identifier: settings.attribute_identifier.into(),
+            attributes_searchable: settings.attributes_searchable.into(),
+            attributes_displayed: settings.attributes_displayed.into(),
+            attributes_ranked: settings.attributes_ranked.into(),
+            stop_words: settings.stop_words.into(),
+            synonyms: settings.synonyms.into(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum UpdateState<T> {
+    Update(T),
+    Add(T),
+    Delete(T),
+    Clear,
+    Nothing,
+}
+
+impl <T> From<Option<T>> for UpdateState<T> {
+    fn from(opt: Option<T>) -> UpdateState<T> {
+        match opt {
+            Some(t) => UpdateState::Update(t),
+            None => UpdateState::Nothing,
+        }
+    }
+}
+
+impl<T> UpdateState<T> {
+    pub fn is_changed(&self) -> bool {
+        match self {
+            UpdateState::Nothing => false,
+            _ => true,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SettingsUpdate {
+    pub ranking_rules: UpdateState<Vec<String>>,
+    pub ranking_distinct: UpdateState<String>,
+    pub attribute_identifier: UpdateState<String>,
+    pub attributes_searchable: UpdateState<Vec<String>>,
+    pub attributes_displayed: UpdateState<Vec<String>>,
+    pub attributes_ranked: UpdateState<Vec<String>>,
+    pub stop_words: UpdateState<BTreeSet<String>>,
+    pub synonyms: UpdateState<BTreeMap<String, Vec<String>>>,
+}
+
+impl Default for SettingsUpdate {
+    fn default() -> Self {
+        Self {
+            ranking_rules: UpdateState::Nothing,
+            ranking_distinct: UpdateState::Nothing,
+            attribute_identifier: UpdateState::Nothing,
+            attributes_searchable: UpdateState::Nothing,
+            attributes_displayed: UpdateState::Nothing,
+            attributes_ranked: UpdateState::Nothing,
+            stop_words: UpdateState::Nothing,
+            synonyms: UpdateState::Nothing,
+        }
+    }
+}

meilisearch-core/src/store/main.rs

@@ -4,18 +4,20 @@ use chrono::{DateTime, Utc};
 use heed::types::{ByteSlice, OwnedType, SerdeBincode, Str};
 use heed::Result as ZResult;
 use meilisearch_schema::Schema;
-use std::collections::HashMap;
+use std::collections::{HashMap, BTreeMap, BTreeSet};
 use std::sync::Arc;
 
 const CREATED_AT_KEY: &str = "created-at";
+const RANKING_RULES_KEY: &str = "ranking-rules-key";
+const RANKING_DISTINCT_KEY: &str = "ranking-distinct-key";
+const STOP_WORDS_KEY: &str = "stop-words-key";
+const SYNONYMS_KEY: &str = "synonyms-key";
 const CUSTOMS_KEY: &str = "customs-key";
 const FIELDS_FREQUENCY_KEY: &str = "fields-frequency";
 const NAME_KEY: &str = "name";
 const NUMBER_OF_DOCUMENTS_KEY: &str = "number-of-documents";
 const RANKED_MAP_KEY: &str = "ranked-map";
 const SCHEMA_KEY: &str = "schema";
-const STOP_WORDS_KEY: &str = "stop-words";
-const SYNONYMS_KEY: &str = "synonyms";
 const UPDATED_AT_KEY: &str = "updated-at";
 const WORDS_KEY: &str = "words";
 
@@ -184,6 +186,54 @@ impl Main {
         }
     }
 
+    pub fn ranking_rules<'txn>(&self, reader: &'txn heed::RoTxn<MainT>) -> ZResult<Option<Vec<String>>> {
+        self.main.get::<_, Str, SerdeBincode<Vec<String>>>(reader, RANKING_RULES_KEY)
+    }
+
+    pub fn put_ranking_rules(self, writer: &mut heed::RwTxn<MainT>, value: Vec<String>) -> ZResult<()> {
+        self.main.put::<_, Str, SerdeBincode<Vec<String>>>(writer, RANKING_RULES_KEY, &value)
+    }
+
+    pub fn delete_ranking_rules(self, writer: &mut heed::RwTxn<MainT>) -> ZResult<bool> {
+        self.main.delete::<_, Str>(writer, RANKING_RULES_KEY)
+    }
+
+    pub fn ranking_distinct<'txn>(&self, reader: &'txn heed::RoTxn<MainT>) -> ZResult<Option<String>> {
+        self.main.get::<_, Str, SerdeBincode<String>>(reader, RANKING_DISTINCT_KEY)
+    }
+
+    pub fn put_ranking_distinct(self, writer: &mut heed::RwTxn<MainT>, value: String) -> ZResult<()> {
+        self.main.put::<_, Str, SerdeBincode<String>>(writer, RANKING_DISTINCT_KEY, &value)
+    }
+
+    pub fn delete_ranking_distinct(self, writer: &mut heed::RwTxn<MainT>) -> ZResult<bool> {
+        self.main.delete::<_, Str>(writer, RANKING_DISTINCT_KEY)
+    }
+
+    pub fn stop_words<'txn>(&self, reader: &'txn heed::RoTxn<MainT>) -> ZResult<Option<BTreeSet<String>>> {
+        self.main.get::<_, Str, SerdeBincode<BTreeSet<String>>>(reader, STOP_WORDS_KEY)
+    }
+
+    pub fn put_stop_words(self, writer: &mut heed::RwTxn<MainT>, value: BTreeSet<String>) -> ZResult<()> {
+        self.main.put::<_, Str, SerdeBincode<BTreeSet<String>>>(writer, STOP_WORDS_KEY, &value)
+    }
+
+    pub fn delete_stop_words(self, writer: &mut heed::RwTxn<MainT>) -> ZResult<bool> {
+        self.main.delete::<_, Str>(writer, STOP_WORDS_KEY)
+    }
+
+    pub fn synonyms<'txn>(&self, reader: &'txn heed::RoTxn<MainT>) -> ZResult<Option<BTreeMap<String, Vec<String>>>> {
+        self.main.get::<_, Str, SerdeBincode<BTreeMap<String, Vec<String>>>>(reader, SYNONYMS_KEY)
+    }
+
+    pub fn put_synonyms(self, writer: &mut heed::RwTxn<MainT>, value: BTreeMap<String, Vec<String>>) -> ZResult<()> {
+        self.main.put::<_, Str, SerdeBincode<BTreeMap<String, Vec<String>>>>(writer, SYNONYMS_KEY, &value)
+    }
+
+    pub fn delete_synonyms(self, writer: &mut heed::RwTxn<MainT>) -> ZResult<bool> {
+        self.main.delete::<_, Str>(writer, SYNONYMS_KEY)
+    }
+
     pub fn put_customs(self, writer: &mut heed::RwTxn<MainT>, customs: &[u8]) -> ZResult<()> {
         self.main
             .put::<_, Str, ByteSlice>(writer, CUSTOMS_KEY, customs)

meilisearch-core/src/store/mod.rs

@@ -35,8 +35,8 @@ use serde::de::{self, Deserialize};
 use zerocopy::{AsBytes, FromBytes};
 
 use crate::criterion::Criteria;
-use crate::database::{UpdateEvent, UpdateEventsEmitter};
 use crate::database::{MainT, UpdateT};
+use crate::database::{UpdateEvent, UpdateEventsEmitter};
 use crate::serde::Deserializer;
 use crate::{query_builder::QueryBuilder, update, DocIndex, DocumentId, Error, MResult};
 
@@ -240,16 +240,17 @@ impl Index {
         }
     }
 
-    pub fn schema_update(&self, writer: &mut heed::RwTxn<UpdateT>, schema: Schema) -> MResult<u64> {
-        let _ = self.updates_notifier.send(UpdateEvent::NewUpdate);
-        update::push_schema_update(writer, self, schema)
-    }
 
     pub fn customs_update(&self, writer: &mut heed::RwTxn<UpdateT>, customs: Vec<u8>) -> ZResult<u64> {
         let _ = self.updates_notifier.send(UpdateEvent::NewUpdate);
         update::push_customs_update(writer, self.updates, self.updates_results, customs)
     }
 
+    pub fn settings_update(&self, writer: &mut heed::RwTxn<UpdateT>, update: SettingsUpdate) -> ZResult<u64> {
+        let _ = self.updates_notifier.send(UpdateEvent::NewUpdate);
+        update::push_settings_update(writer, self.updates, self.updates_results, update)
+    }
+
     pub fn documents_addition<D>(&self) -> update::DocumentsAddition<D> {
         update::DocumentsAddition::new(
             self.updates,
@@ -279,22 +280,6 @@ impl Index {
         update::push_clear_all(writer, self.updates, self.updates_results)
     }
 
-    pub fn synonyms_update(&self) -> update::SynonymsUpdate {
-        update::SynonymsUpdate::new(
-            self.updates,
-            self.updates_results,
-            self.updates_notifier.clone(),
-        )
-    }
-
-    pub fn stop_words_update(&self) -> update::StopWordsUpdate {
-        update::StopWordsUpdate::new(
-            self.updates,
-            self.updates_results,
-            self.updates_notifier.clone(),
-        )
-    }
-
     pub fn current_update_id(&self, reader: &heed::RoTxn<UpdateT>) -> MResult<Option<u64>> {
         match self.updates.last_update(reader)? {
             Some((id, _)) => Ok(Some(id)),

meilisearch-core/src/update/mod.rs

@@ -2,9 +2,8 @@ mod clear_all;
 mod customs_update;
 mod documents_addition;
 mod documents_deletion;
-mod schema_update;
+mod settings_update;
-mod stop_words_update;
+
-mod synonyms_update;
 
 pub use self::clear_all::{apply_clear_all, push_clear_all};
 pub use self::customs_update::{apply_customs_update, push_customs_update};
@@ -12,12 +11,10 @@ pub use self::documents_addition::{
     apply_documents_addition, apply_documents_partial_addition, DocumentsAddition,
 };
 pub use self::documents_deletion::{apply_documents_deletion, DocumentsDeletion};
-pub use self::schema_update::{apply_schema_update, push_schema_update};
+pub use self::settings_update::{apply_settings_update, push_settings_update};
-pub use self::stop_words_update::{apply_stop_words_update, StopWordsUpdate};
-pub use self::synonyms_update::{apply_synonyms_update, SynonymsUpdate};
 
 use std::cmp;
-use std::collections::{BTreeMap, BTreeSet, HashMap};
+use std::collections::HashMap;
 use std::time::Instant;
 
 use chrono::{DateTime, Utc};
@@ -29,7 +26,7 @@ use sdset::Set;
 
 use crate::{store, DocumentId, MResult};
 use crate::database::{MainT, UpdateT};
-use meilisearch_schema::Schema;
+use crate::settings::SettingsUpdate;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Update {
@@ -45,13 +42,6 @@ impl Update {
         }
     }
 
-    fn schema(data: Schema) -> Update {
-        Update {
-            data: UpdateData::Schema(data),
-            enqueued_at: Utc::now(),
-        }
-    }
-
     fn customs(data: Vec<u8>) -> Update {
         Update {
             data: UpdateData::Customs(data),
@@ -80,16 +70,9 @@ impl Update {
         }
     }
 
-    fn synonyms_update(data: BTreeMap<String, Vec<String>>) -> Update {
+    fn settings(data: SettingsUpdate) -> Update {
         Update {
-            data: UpdateData::SynonymsUpdate(data),
+            data: UpdateData::Settings(data),
-            enqueued_at: Utc::now(),
-        }
-    }
-
-    fn stop_words_update(data: BTreeSet<String>) -> Update {
-        Update {
-            data: UpdateData::StopWordsUpdate(data),
             enqueued_at: Utc::now(),
         }
     }
@@ -98,20 +81,17 @@ impl Update {
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum UpdateData {
     ClearAll,
-    Schema(Schema),
     Customs(Vec<u8>),
     DocumentsAddition(Vec<HashMap<String, serde_json::Value>>),
     DocumentsPartial(Vec<HashMap<String, serde_json::Value>>),
     DocumentsDeletion(Vec<DocumentId>),
-    SynonymsUpdate(BTreeMap<String, Vec<String>>),
+    Settings(SettingsUpdate)
-    StopWordsUpdate(BTreeSet<String>),
 }
 
 impl UpdateData {
     pub fn update_type(&self) -> UpdateType {
         match self {
             UpdateData::ClearAll => UpdateType::ClearAll,
-            UpdateData::Schema(_) => UpdateType::Schema,
             UpdateData::Customs(_) => UpdateType::Customs,
             UpdateData::DocumentsAddition(addition) => UpdateType::DocumentsAddition {
                 number: addition.len(),
@@ -122,12 +102,7 @@ impl UpdateData {
             UpdateData::DocumentsDeletion(deletion) => UpdateType::DocumentsDeletion {
                 number: deletion.len(),
             },
-            UpdateData::SynonymsUpdate(addition) => UpdateType::SynonymsUpdate {
+            UpdateData::Settings(update) => UpdateType::Settings(update.clone()),
-                number: addition.len(),
-            },
-            UpdateData::StopWordsUpdate(update) => UpdateType::StopWordsUpdate {
-                number: update.len(),
-            },
         }
     }
 }
@@ -136,13 +111,11 @@ impl UpdateData {
 #[serde(tag = "name")]
 pub enum UpdateType {
     ClearAll,
-    Schema,
     Customs,
     DocumentsAddition { number: usize },
     DocumentsPartial { number: usize },
     DocumentsDeletion { number: usize },
-    SynonymsUpdate { number: usize },
+    Settings(SettingsUpdate),
-    StopWordsUpdate { number: usize },
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -247,14 +220,6 @@ pub fn update_task<'a, 'b>(
 
             (update_type, result, start.elapsed())
         }
-        UpdateData::Schema(schema) => {
-            let start = Instant::now();
-
-            let update_type = UpdateType::Schema;
-            let result = apply_schema_update(writer, &schema, index);
-
-            (update_type, result, start.elapsed())
-        }
         UpdateData::Customs(customs) => {
             let start = Instant::now();
 
@@ -296,25 +261,16 @@ pub fn update_task<'a, 'b>(
 
             (update_type, result, start.elapsed())
         }
-        UpdateData::SynonymsUpdate(synonyms) => {
+        UpdateData::Settings(settings) => {
             let start = Instant::now();
 
-            let update_type = UpdateType::SynonymsUpdate {
+            let update_type = UpdateType::Settings(settings.clone());
-                number: synonyms.len(),
-            };
 
-            let result = apply_synonyms_update(writer, index.main, index.synonyms, synonyms);
+            let result = apply_settings_update(
-
+                writer,
-            (update_type, result, start.elapsed())
+                index,
-        }
+                settings,
-        UpdateData::StopWordsUpdate(stop_words) => {
+            );
-            let start = Instant::now();
-
-            let update_type = UpdateType::StopWordsUpdate {
-                number: stop_words.len(),
-            };
-
-            let result = apply_stop_words_deletion(writer, index, stop_words);
 
             (update_type, result, start.elapsed())
         }

meilisearch-core/src/update/schema_update.rs

@@ -1,64 +1 @@
-use meilisearch_schema::{Diff, Schema};
 
-use crate::database::{MainT, UpdateT};
-use crate::update::documents_addition::reindex_all_documents;
-use crate::update::{next_update_id, Update};
-use crate::{error::UnsupportedOperation, store, MResult};
-
-pub fn apply_schema_update(
-    writer: &mut heed::RwTxn<MainT>,
-    new_schema: &Schema,
-    index: &store::Index,
-) -> MResult<()> {
-    use UnsupportedOperation::{
-        CanOnlyIntroduceNewSchemaAttributesAtEnd, CannotRemoveSchemaAttribute,
-        CannotReorderSchemaAttribute, CannotUpdateSchemaIdentifier,
-    };
-
-    let mut need_full_reindexing = false;
-
-    if let Some(old_schema) = index.main.schema(writer)? {
-        for diff in meilisearch_schema::diff(&old_schema, new_schema) {
-            match diff {
-                Diff::IdentChange { .. } => return Err(CannotUpdateSchemaIdentifier.into()),
-                Diff::AttrMove { .. } => return Err(CannotReorderSchemaAttribute.into()),
-                Diff::AttrPropsChange { old, new, .. } => {
-                    if new.indexed != old.indexed {
-                        need_full_reindexing = true;
-                    }
-                    if new.ranked != old.ranked {
-                        need_full_reindexing = true;
-                    }
-                }
-                Diff::NewAttr { pos, .. } => {
-                    // new attribute not at the end of the schema
-                    if pos < old_schema.number_of_attributes() {
-                        return Err(CanOnlyIntroduceNewSchemaAttributesAtEnd.into());
-                    }
-                }
-                Diff::RemovedAttr { .. } => return Err(CannotRemoveSchemaAttribute.into()),
-            }
-        }
-    }
-
-    index.main.put_schema(writer, new_schema)?;
-
-    if need_full_reindexing {
-        reindex_all_documents(writer, index)?
-    }
-
-    Ok(())
-}
-
-pub fn push_schema_update(
-    writer: &mut heed::RwTxn<UpdateT>,
-    index: &store::Index,
-    schema: Schema,
-) -> MResult<u64> {
-    let last_update_id = next_update_id(writer, index.updates, index.updates_results)?;
-
-    let update = Update::schema(schema);
-    index.updates.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}

meilisearch-core/src/update/settings_update.rs

@@ -0,0 +1,483 @@
+use std::collections::{HashMap, BTreeMap, BTreeSet};
+
+use heed::Result as ZResult;
+use fst::{set::OpBuilder, SetBuilder};
+use sdset::SetBuf;
+
+use meilisearch_schema::{Schema, SchemaAttr, diff_transposition, generate_schema};
+
+use crate::database::{MainT, UpdateT};
+use crate::settings::{UpdateState, SettingsUpdate};
+use crate::update::documents_addition::reindex_all_documents;
+use crate::update::{next_update_id, Update};
+use crate::{store, MResult};
+
+pub fn push_settings_update(
+    writer: &mut heed::RwTxn<UpdateT>,
+    updates_store: store::Updates,
+    updates_results_store: store::UpdatesResults,
+    settings: SettingsUpdate,
+) -> ZResult<u64> {
+    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
+
+    let update = Update::settings(settings);
+    updates_store.put_update(writer, last_update_id, &update)?;
+
+    Ok(last_update_id)
+}
+
+pub fn apply_settings_update(
+    writer: &mut heed::RwTxn<MainT>,
+    index: &store::Index,
+    settings: SettingsUpdate,
+) -> MResult<()> {
+
+
+    let mut must_reindex = false;
+
+    let old_schema = index.main.schema(writer)?;
+
+    match settings.ranking_rules {
+        UpdateState::Update(v) => {
+            index.main.put_ranking_rules(writer, v)?;
+        },
+        UpdateState::Clear => {
+            index.main.delete_ranking_rules(writer)?;
+        },
+        _ => (),
+    }
+    match settings.ranking_distinct {
+        UpdateState::Update(v) => {
+            index.main.put_ranking_distinct(writer, v)?;
+        },
+        UpdateState::Clear => {
+            index.main.delete_ranking_distinct(writer)?;
+        },
+        _ => (),
+    }
+    let identifier = match settings.attribute_identifier.clone() {
+        UpdateState::Update(v) => v,
+        _ => {
+            old_schema.clone().unwrap().identifier_name().to_owned()
+        },
+    };
+    let attributes_searchable: Vec<String> = match settings.attributes_searchable.clone() {
+        UpdateState::Update(v) => v,
+        UpdateState::Clear => Vec::new(),
+        UpdateState::Nothing => {
+            match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_indexed())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            }
+        },
+        UpdateState::Add(attrs) => {
+            let mut old_attrs = match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_indexed())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            };
+            for attr in attrs {
+                if !old_attrs.contains(&attr) {
+                    old_attrs.push(attr);
+                }
+            }
+            old_attrs
+        },
+        UpdateState::Delete(attrs) => {
+            let mut old_attrs = match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_indexed())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            };
+            for attr in attrs {
+                old_attrs.retain(|x| *x == attr)
+            }
+            old_attrs
+        }
+    };
+    let attributes_displayed: Vec<String> = match settings.attributes_displayed.clone() {
+        UpdateState::Update(v) => v,
+        UpdateState::Clear => Vec::new(),
+        UpdateState::Nothing => {
+            match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_displayed())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            }
+        },
+        UpdateState::Add(attrs) => {
+            let mut old_attrs = match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_displayed())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            };
+            for attr in attrs {
+                if !old_attrs.contains(&attr) {
+                    old_attrs.push(attr);
+                }
+            }
+            old_attrs
+        },
+        UpdateState::Delete(attrs) => {
+            let mut old_attrs = match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_displayed())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            };
+            for attr in attrs {
+                old_attrs.retain(|x| *x == attr)
+            }
+            old_attrs
+        }
+    };
+    let attributes_ranked: Vec<String> = match settings.attributes_ranked.clone() {
+        UpdateState::Update(v) => v,
+        UpdateState::Clear => Vec::new(),
+        UpdateState::Nothing => {
+            match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_ranked())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            }
+        },
+        UpdateState::Add(attrs) => {
+            let mut old_attrs = match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_ranked())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            };
+            for attr in attrs {
+                if !old_attrs.contains(&attr) {
+                    old_attrs.push(attr);
+                }
+            }
+            old_attrs
+        },
+        UpdateState::Delete(attrs) => {
+            let mut old_attrs = match old_schema.clone() {
+                Some(schema) => {
+                    schema.into_iter()
+                        .filter(|(_, props)| props.is_ranked())
+                        .map(|(name, _)| name)
+                        .collect()
+                },
+                None => Vec::new(),
+            };
+            for attr in attrs {
+                old_attrs.retain(|x| *x == attr)
+            }
+            old_attrs
+        }
+    };
+
+    let new_schema = generate_schema(identifier, attributes_searchable, attributes_displayed, attributes_ranked);
+
+    index.main.put_schema(writer, &new_schema)?;
+
+    match settings.stop_words {
+        UpdateState::Update(stop_words) => {
+            if apply_stop_words_update(writer, index, stop_words)? {
+                must_reindex = true;
+            }
+        },
+        UpdateState::Clear => {
+            if apply_stop_words_update(writer, index, BTreeSet::new())? {
+                must_reindex = true;
+            }
+        },
+        _ => (),
+    }
+
+    match settings.synonyms {
+        UpdateState::Update(synonyms) => apply_synonyms_update(writer, index, synonyms)?,
+        UpdateState::Clear => apply_synonyms_update(writer, index, BTreeMap::new())?,
+        _ => (),
+    }
+
+    let main_store = index.main;
+    let documents_fields_store = index.documents_fields;
+    let documents_fields_counts_store = index.documents_fields_counts;
+    let postings_lists_store = index.postings_lists;
+    let docs_words_store = index.docs_words;
+
+    if settings.attribute_identifier.is_changed() ||
+        settings.attributes_ranked.is_changed() ||
+        settings.attributes_searchable.is_changed() ||
+        settings.attributes_displayed.is_changed()
+    {
+        if let Some(old_schema) = old_schema {
+            rewrite_all_documents(writer, index, &old_schema, &new_schema)?;
+            must_reindex = true;
+        }
+    }
+    if must_reindex {
+        reindex_all_documents(
+            writer,
+            main_store,
+            documents_fields_store,
+            documents_fields_counts_store,
+            postings_lists_store,
+            docs_words_store,
+        )?;
+    }
+    Ok(())
+}
+
+pub fn apply_stop_words_update(
+    writer: &mut heed::RwTxn<MainT>,
+    index: &store::Index,
+    stop_words: BTreeSet<String>,
+) -> MResult<bool> {
+
+    let main_store = index.main;
+    let mut must_reindex = false;
+
+    let old_stop_words: BTreeSet<String> = main_store
+        .stop_words_fst(writer)?
+        .unwrap_or_default()
+        .stream()
+        .into_strs().unwrap().into_iter().collect();
+
+    let deletion: BTreeSet<String> = old_stop_words.clone().difference(&stop_words).cloned().collect();
+    let addition: BTreeSet<String> = stop_words.clone().difference(&old_stop_words).cloned().collect();
+
+    if !addition.is_empty() {
+        apply_stop_words_addition(
+            writer,
+            index,
+            addition
+        )?;
+    }
+
+    if !deletion.is_empty() {
+        must_reindex = apply_stop_words_deletion(
+            writer,
+            index,
+            deletion
+        )?;
+    }
+
+    main_store.put_stop_words(writer, stop_words)?;
+
+    Ok(must_reindex)
+}
+
+fn apply_stop_words_addition(
+    writer: &mut heed::RwTxn<MainT>,
+    index: &store::Index,
+    addition: BTreeSet<String>,
+) -> MResult<()> {
+
+    let main_store = index.main;
+    let postings_lists_store = index.postings_lists;
+
+    let mut stop_words_builder = SetBuilder::memory();
+
+    for word in addition {
+        stop_words_builder.insert(&word).unwrap();
+        // we remove every posting list associated to a new stop word
+        postings_lists_store.del_postings_list(writer, word.as_bytes())?;
+    }
+
+    // create the new delta stop words fst
+    let delta_stop_words = stop_words_builder
+        .into_inner()
+        .and_then(fst::Set::from_bytes)
+        .unwrap();
+
+    // we also need to remove all the stop words from the main fst
+    if let Some(word_fst) = main_store.words_fst(writer)? {
+        let op = OpBuilder::new()
+            .add(&word_fst)
+            .add(&delta_stop_words)
+            .difference();
+
+        let mut word_fst_builder = SetBuilder::memory();
+        word_fst_builder.extend_stream(op).unwrap();
+        let word_fst = word_fst_builder
+            .into_inner()
+            .and_then(fst::Set::from_bytes)
+            .unwrap();
+
+        main_store.put_words_fst(writer, &word_fst)?;
+    }
+
+    // now we add all of these stop words from the main store
+    let stop_words_fst = main_store.stop_words_fst(writer)?.unwrap_or_default();
+
+    let op = OpBuilder::new()
+        .add(&stop_words_fst)
+        .add(&delta_stop_words)
+        .r#union();
+
+    let mut stop_words_builder = SetBuilder::memory();
+    stop_words_builder.extend_stream(op).unwrap();
+    let stop_words_fst = stop_words_builder
+        .into_inner()
+        .and_then(fst::Set::from_bytes)
+        .unwrap();
+
+    main_store.put_stop_words_fst(writer, &stop_words_fst)?;
+
+    Ok(())
+}
+
+fn apply_stop_words_deletion(
+    writer: &mut heed::RwTxn<MainT>,
+    index: &store::Index,
+    deletion: BTreeSet<String>,
+) -> MResult<bool> {
+
+    let main_store = index.main;
+
+    let mut stop_words_builder = SetBuilder::memory();
+
+    for word in deletion {
+        stop_words_builder.insert(&word).unwrap();
+    }
+
+    // create the new delta stop words fst
+    let delta_stop_words = stop_words_builder
+        .into_inner()
+        .and_then(fst::Set::from_bytes)
+        .unwrap();
+
+    // now we delete all of these stop words from the main store
+    let stop_words_fst = main_store.stop_words_fst(writer)?.unwrap_or_default();
+
+    let op = OpBuilder::new()
+        .add(&stop_words_fst)
+        .add(&delta_stop_words)
+        .difference();
+
+    let mut stop_words_builder = SetBuilder::memory();
+    stop_words_builder.extend_stream(op).unwrap();
+    let stop_words_fst = stop_words_builder
+        .into_inner()
+        .and_then(fst::Set::from_bytes)
+        .unwrap();
+
+    main_store.put_stop_words_fst(writer, &stop_words_fst)?;
+
+    // now that we have setup the stop words
+    // lets reindex everything...
+    if let Ok(number) = main_store.number_of_documents(writer) {
+        if number > 0 {
+            return Ok(true)
+        }
+    }
+
+    Ok(false)
+}
+
+pub fn apply_synonyms_update(
+    writer: &mut heed::RwTxn<MainT>,
+    index: &store::Index,
+    synonyms: BTreeMap<String, Vec<String>>,
+) -> MResult<()> {
+
+    let main_store = index.main;
+    let synonyms_store = index.synonyms;
+
+    let mut synonyms_builder = SetBuilder::memory();
+    synonyms_store.clear(writer)?;
+    for (word, alternatives) in synonyms.clone() {
+        synonyms_builder.insert(&word).unwrap();
+
+        let alternatives = {
+            let alternatives = SetBuf::from_dirty(alternatives);
+            let mut alternatives_builder = SetBuilder::memory();
+            alternatives_builder.extend_iter(alternatives).unwrap();
+            let bytes = alternatives_builder.into_inner().unwrap();
+            fst::Set::from_bytes(bytes).unwrap()
+        };
+
+        synonyms_store.put_synonyms(writer, word.as_bytes(), &alternatives)?;
+    }
+
+    let synonyms_set = synonyms_builder
+        .into_inner()
+        .and_then(fst::Set::from_bytes)
+        .unwrap();
+
+    main_store.put_synonyms_fst(writer, &synonyms_set)?;
+    main_store.put_synonyms(writer, synonyms)?;
+
+    Ok(())
+}
+
+pub fn rewrite_all_documents(
+    writer: &mut heed::RwTxn<MainT>,
+    index: &store::Index,
+    old_schema: &Schema,
+    new_schema: &Schema,
+) -> MResult<()> {
+
+    let mut documents_ids_to_reindex = Vec::new();
+
+    // Retrieve all documents present on the database
+    for result in index.documents_fields_counts.documents_ids(writer)? {
+        let document_id = result?;
+        documents_ids_to_reindex.push(document_id);
+    }
+
+    let transpotition = diff_transposition(old_schema, new_schema);
+
+    // Rewrite all documents one by one
+    for id in documents_ids_to_reindex {
+        let mut document: HashMap<SchemaAttr, Vec<u8>> = HashMap::new();
+
+        // Retrieve the old document
+        for item in index.documents_fields.document_fields(writer, id)? {
+            if let Ok(item) = item {
+                if let Some(pos) = transpotition[(item.0).0 as usize] {
+                    // Save the current document with the new SchemaAttr
+                    document.insert(SchemaAttr::new(pos), item.1.to_vec());
+                }
+            }
+        }
+        // Remove the current document
+        index.documents_fields.del_all_document_fields(writer, id)?;
+
+        // Rewrite the new document
+        // TODO: use cursor to not do memory jump at each call
+        for (key, value) in document {
+            index.documents_fields.put_document_field(writer, id, key, &value)?;
+        }
+    }
+
+    Ok(())
+}

meilisearch-core/src/update/stop_words_update.rs

@@ -1,218 +0,0 @@
-use std::collections::BTreeSet;
-
-use fst::{set::OpBuilder, SetBuilder};
-
-use crate::automaton::normalize_str;
-use crate::database::{MainT, UpdateT};
-use crate::database::{UpdateEvent, UpdateEventsEmitter};
-use crate::update::documents_addition::reindex_all_documents;
-use crate::update::{next_update_id, Update};
-use crate::{store, MResult};
-
-pub struct StopWordsUpdate {
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    updates_notifier: UpdateEventsEmitter,
-    stop_words: BTreeSet<String>,
-}
-
-impl StopWordsUpdate {
-    pub fn new(
-        updates_store: store::Updates,
-        updates_results_store: store::UpdatesResults,
-        updates_notifier: UpdateEventsEmitter,
-    ) -> StopWordsUpdate {
-        StopWordsUpdate {
-            updates_store,
-            updates_results_store,
-            updates_notifier,
-            stop_words: BTreeSet::new(),
-        }
-    }
-
-    pub fn add_stop_word<S: AsRef<str>>(&mut self, stop_word: S) {
-        let stop_word = normalize_str(stop_word.as_ref());
-        self.stop_words.insert(stop_word);
-    }
-
-    pub fn finalize(self, writer: &mut heed::RwTxn<UpdateT>) -> MResult<u64> {
-        let _ = self.updates_notifier.send(UpdateEvent::NewUpdate);
-        let update_id = push_stop_words_update(
-            writer,
-            self.updates_store,
-            self.updates_results_store,
-            self.stop_words,
-        )?;
-        Ok(update_id)
-    }
-}
-
-pub fn push_stop_words_update(
-    writer: &mut heed::RwTxn<UpdateT>,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    update: BTreeSet<String>,
-) -> MResult<u64> {
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::stop_words_update(update);
-    updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}
-
-pub fn apply_stop_words_update(
-    writer: &mut heed::RwTxn<MainT>,
-    main_store: store::Main,
-    documents_fields_store: store::DocumentsFields,
-    documents_fields_counts_store: store::DocumentsFieldsCounts,
-    postings_lists_store: store::PostingsLists,
-    docs_words_store: store::DocsWords,
-    stop_words: BTreeSet<String>,
-) -> MResult<()> {
-
-    let old_stop_words: BTreeSet<String> = main_store
-        .stop_words_fst(writer)?
-        .unwrap_or_default()
-        .stream()
-        .into_strs().unwrap().into_iter().collect();
-
-    let deletion: BTreeSet<String> = old_stop_words.clone().difference(&stop_words).cloned().collect();
-    let addition: BTreeSet<String> = stop_words.clone().difference(&old_stop_words).cloned().collect();
-
-    if !addition.is_empty() {
-        apply_stop_words_addition(
-            writer,
-            main_store,
-            postings_lists_store,
-            addition
-        )?;
-    }
-
-    if !deletion.is_empty() {
-        apply_stop_words_deletion(
-            writer,
-            main_store,
-            documents_fields_store,
-            documents_fields_counts_store,
-            postings_lists_store,
-            docs_words_store,
-            deletion
-        )?;
-    }
-
-    Ok(())
-}
-
-fn apply_stop_words_addition(
-    writer: &mut heed::RwTxn<MainT>,
-    main_store: store::Main,
-    postings_lists_store: store::PostingsLists,
-    addition: BTreeSet<String>,
-) -> MResult<()> {
-    let mut stop_words_builder = SetBuilder::memory();
-
-    for word in addition {
-        stop_words_builder.insert(&word).unwrap();
-        // we remove every posting list associated to a new stop word
-        postings_lists_store.del_postings_list(writer, word.as_bytes())?;
-    }
-
-    // create the new delta stop words fst
-    let delta_stop_words = stop_words_builder
-        .into_inner()
-        .and_then(fst::Set::from_bytes)
-        .unwrap();
-
-    // we also need to remove all the stop words from the main fst
-    if let Some(word_fst) = main_store.words_fst(writer)? {
-        let op = OpBuilder::new()
-            .add(&word_fst)
-            .add(&delta_stop_words)
-            .difference();
-
-        let mut word_fst_builder = SetBuilder::memory();
-        word_fst_builder.extend_stream(op).unwrap();
-        let word_fst = word_fst_builder
-            .into_inner()
-            .and_then(fst::Set::from_bytes)
-            .unwrap();
-
-        main_store.put_words_fst(writer, &word_fst)?;
-    }
-
-    // now we add all of these stop words from the main store
-    let stop_words_fst = main_store.stop_words_fst(writer)?.unwrap_or_default();
-
-    let op = OpBuilder::new()
-        .add(&stop_words_fst)
-        .add(&delta_stop_words)
-        .r#union();
-
-    let mut stop_words_builder = SetBuilder::memory();
-    stop_words_builder.extend_stream(op).unwrap();
-    let stop_words_fst = stop_words_builder
-        .into_inner()
-        .and_then(fst::Set::from_bytes)
-        .unwrap();
-
-    main_store.put_stop_words_fst(writer, &stop_words_fst)?;
-
-    Ok(())
-}
-
-fn apply_stop_words_deletion(
-    writer: &mut heed::RwTxn<MainT>,
-    main_store: store::Main,
-    documents_fields_store: store::DocumentsFields,
-    documents_fields_counts_store: store::DocumentsFieldsCounts,
-    postings_lists_store: store::PostingsLists,
-    docs_words_store: store::DocsWords,
-    deletion: BTreeSet<String>,
-) -> MResult<()> {
-    let mut stop_words_builder = SetBuilder::memory();
-
-    for word in deletion {
-        stop_words_builder.insert(&word).unwrap();
-    }
-
-    // create the new delta stop words fst
-    let delta_stop_words = stop_words_builder
-        .into_inner()
-        .and_then(fst::Set::from_bytes)
-        .unwrap();
-
-    // now we delete all of these stop words from the main store
-    let stop_words_fst = main_store.stop_words_fst(writer)?.unwrap_or_default();
-
-    let op = OpBuilder::new()
-        .add(&stop_words_fst)
-        .add(&delta_stop_words)
-        .difference();
-
-    let mut stop_words_builder = SetBuilder::memory();
-    stop_words_builder.extend_stream(op).unwrap();
-    let stop_words_fst = stop_words_builder
-        .into_inner()
-        .and_then(fst::Set::from_bytes)
-        .unwrap();
-
-    main_store.put_stop_words_fst(writer, &stop_words_fst)?;
-
-    // now that we have setup the stop words
-    // lets reindex everything...
-    if let Ok(number) = main_store.number_of_documents(writer) {
-        if number > 0 {
-            reindex_all_documents(
-                writer,
-                main_store,
-                documents_fields_store,
-                documents_fields_counts_store,
-                postings_lists_store,
-                docs_words_store,
-            )?;
-        }
-    }
-
-    Ok(())
-}

meilisearch-core/src/update/synonyms_update.rs

@@ -1,103 +0,0 @@
-use std::collections::BTreeMap;
-
-use fst::SetBuilder;
-use sdset::SetBuf;
-
-use crate::database::{MainT, UpdateT};
-use crate::automaton::normalize_str;
-use crate::database::{UpdateEvent, UpdateEventsEmitter};
-use crate::update::{next_update_id, Update};
-use crate::{store, MResult};
-
-pub struct SynonymsUpdate {
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    updates_notifier: UpdateEventsEmitter,
-    synonyms: BTreeMap<String, Vec<String>>,
-}
-
-impl SynonymsUpdate {
-    pub fn new(
-        updates_store: store::Updates,
-        updates_results_store: store::UpdatesResults,
-        updates_notifier: UpdateEventsEmitter,
-    ) -> SynonymsUpdate {
-        SynonymsUpdate {
-            updates_store,
-            updates_results_store,
-            updates_notifier,
-            synonyms: BTreeMap::new(),
-        }
-    }
-
-    pub fn add_synonym<S, T, I>(&mut self, synonym: S, alternatives: I)
-    where
-        S: AsRef<str>,
-        T: AsRef<str>,
-        I: IntoIterator<Item = T>,
-    {
-        let synonym = normalize_str(synonym.as_ref());
-        let alternatives = alternatives.into_iter().map(|s| s.as_ref().to_lowercase());
-        self.synonyms
-            .entry(synonym)
-            .or_insert_with(Vec::new)
-            .extend(alternatives);
-    }
-
-    pub fn finalize(self, writer: &mut heed::RwTxn<UpdateT>) -> MResult<u64> {
-        let _ = self.updates_notifier.send(UpdateEvent::NewUpdate);
-        let update_id = push_synonyms_update(
-            writer,
-            self.updates_store,
-            self.updates_results_store,
-            self.synonyms,
-        )?;
-        Ok(update_id)
-    }
-}
-
-pub fn push_synonyms_update(
-    writer: &mut heed::RwTxn<UpdateT>,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    addition: BTreeMap<String, Vec<String>>,
-) -> MResult<u64> {
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::synonyms_update(addition);
-    updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}
-
-pub fn apply_synonyms_update(
-    writer: &mut heed::RwTxn<MainT>,
-    main_store: store::Main,
-    synonyms_store: store::Synonyms,
-    addition: BTreeMap<String, Vec<String>>,
-) -> MResult<()> {
-    let mut synonyms_builder = SetBuilder::memory();
-    synonyms_store.clear(writer)?;
-    for (word, alternatives) in addition {
-        synonyms_builder.insert(&word).unwrap();
-
-        let alternatives = {
-            let alternatives = SetBuf::from_dirty(alternatives);
-            let mut alternatives_builder = SetBuilder::memory();
-            alternatives_builder.extend_iter(alternatives).unwrap();
-            let bytes = alternatives_builder.into_inner().unwrap();
-            fst::Set::from_bytes(bytes).unwrap()
-        };
-
-        synonyms_store.put_synonyms(writer, word.as_bytes(), &alternatives)?;
-    }
-
-    let synonyms = synonyms_builder
-        .into_inner()
-        .and_then(fst::Set::from_bytes)
-        .unwrap();
-
-    main_store.put_synonyms_fst(writer, &synonyms)?;
-
-    Ok(())
-}

meilisearch-http/src/routes/setting.rs

@@ -1,9 +1,8 @@
-use std::collections::HashMap;
-
 use http::StatusCode;
 use serde::{Deserialize, Serialize, Deserializer};
 use tide::response::IntoResponse;
 use tide::{Context, Response};
+// use indexmap::IndexMap;
 
 use crate::error::{ResponseError, SResult};
 use crate::helpers::tide::ContextExt;
@@ -14,7 +13,7 @@ use crate::Data;
 #[derive(Default, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase", deny_unknown_fields)]
 pub struct Setting {
-    pub ranking_order: Option<RankingOrder>,
+    // pub ranking_order: Option<RankingOrder>,
     pub distinct_field: Option<DistinctField>,
     pub ranking_rules: Option<RankingRules>,
 }
@@ -26,9 +25,9 @@ pub enum RankingOrdering {
     Dsc,
 }
 
-pub type RankingOrder = Vec<String>;
+// pub type RankingOrder = Vec<String>;
 pub type DistinctField = String;
-pub type RankingRules = HashMap<String, RankingOrdering>;
+pub type RankingRules = Vec<String>;
 
 pub async fn get(ctx: Context<Data>) -> SResult<Response> {
     ctx.is_allowed(SettingsRead)?;
@@ -48,8 +47,8 @@ pub async fn get(ctx: Context<Data>) -> SResult<Response> {
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase", deny_unknown_fields)]
 pub struct SettingBody {
-    #[serde(default, deserialize_with = "deserialize_some")]
+    // #[serde(default, deserialize_with = "deserialize_some")]
-    pub ranking_order: Option<Option<RankingOrder>>,
+    // pub ranking_order: Option<Option<RankingOrder>>,
     #[serde(default, deserialize_with = "deserialize_some")]
     pub distinct_field: Option<Option<DistinctField>>,
     #[serde(default, deserialize_with = "deserialize_some")]
@@ -80,9 +79,9 @@ pub async fn update(mut ctx: Context<Data>) -> SResult<Response> {
         None => Setting::default(),
     };
 
-    if let Some(ranking_order) = settings.ranking_order {
+    // if let Some(ranking_order) = settings.ranking_order {
-        current_settings.ranking_order = ranking_order;
+    //     current_settings.ranking_order = ranking_order;
-    }
+    // }
 
     if let Some(distinct_field) = settings.distinct_field {
         current_settings.distinct_field = distinct_field;

meilisearch-http/src/routes/synonym.rs

@@ -81,6 +81,11 @@ pub async fn delete(ctx: Context<Data>) -> SResult<Response> {
     let db = &ctx.state().db;
     let mut writer = db.update_write_txn().map_err(ResponseError::internal)?;
 
+    let settings = SettingsUpdate {
+        synonyms: UpdateState::Clear,
+        .. SettingsUpdate::default()
+    };
+
     let synonyms_update = index.synonyms_update();
 
     let update_id = synonyms_update

meilisearch-schema/src/lib.rs

@@ -22,7 +22,7 @@ pub const RANKED: SchemaProps = SchemaProps {
     ranked: true,
 };
 
-#[derive(Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Default, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SchemaProps {
     #[serde(default)]
     pub displayed: bool,
@@ -97,6 +97,7 @@ pub struct SchemaBuilder {
 }
 
 impl SchemaBuilder {
+
     pub fn with_identifier<S: Into<String>>(name: S) -> SchemaBuilder {
         SchemaBuilder {
             identifier: name.into(),
@@ -191,6 +192,10 @@ impl Schema {
         name
     }
 
+    pub fn into_iter<'a>(&'a self) -> impl Iterator<Item = (String, SchemaProps)> + 'a {
+        self.inner.props.clone().into_iter()
+    }
+
     pub fn iter<'a>(&'a self) -> impl Iterator<Item = (&str, SchemaAttr, SchemaProps)> + 'a {
         self.inner.props.iter().map(move |(name, prop)| {
             let attr = self.inner.attrs.get(name).unwrap();
@@ -341,6 +346,62 @@ pub fn diff(old: &Schema, new: &Schema) -> Vec<Diff> {
     differences
 }
 
+
+// The diff_transposition return the transpotion matrix to apply during the documents rewrite process.
+// e.g.
+// old_schema: ["id", "title", "description", "tags", "date"]
+// new_schema: ["title", "tags", "id", "new", "position","description"]
+// diff_transposition: [Some(2), Some(0), Some(5), Some(1), None]
+//
+// - attribute 0 (id) become attribute 2
+// - attribute 1 (title) become attribute 0
+// - attribute 2 (description) become attribute 5
+// - attribute 3 (tags) become attribute 1
+// - attribute 4 (date) is deleted
+pub fn diff_transposition(old: &Schema, new: &Schema) -> Vec<Option<u16>> {
+    let old = old.to_builder();
+    let new = new.to_builder();
+
+    let old_attributes: Vec<&str> = old.attributes.iter().map(|(key, _)| key.as_str()).collect();
+    let new_attributes: Vec<&str> = new.attributes.iter().map(|(key, _)| key.as_str()).collect();
+
+    let mut transpotition = Vec::new();
+
+    for (_pos, attr) in old_attributes.iter().enumerate() {
+        if let Some(npos) = new_attributes[..].iter().position(|x| x == attr) {
+            transpotition.push(Some(npos as u16));
+        } else {
+            transpotition.push(None);
+        }
+    }
+
+    transpotition
+}
+
+pub fn generate_schema(identifier: String, indexed: Vec<String>, displayed: Vec<String>, ranked: Vec<String>) -> Schema {
+    let mut map = IndexMap::new();
+
+    for item in indexed.iter() {
+        map.entry(item).or_insert(SchemaProps::default()).indexed = true;
+    }
+    for item in ranked.iter() {
+        map.entry(item).or_insert(SchemaProps::default()).ranked = true;
+    }
+    for item in displayed.iter() {
+        map.entry(item).or_insert(SchemaProps::default()).displayed = true;
+    }
+    let id = identifier.clone();
+    map.entry(&id).or_insert(SchemaProps::default());
+
+    let mut builder = SchemaBuilder::with_identifier(identifier);
+
+    for (key, value) in map {
+        builder.new_attribute(key, value);
+    }
+
+    builder.build()
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;