Provide StoreReader::enumerate to simplify creation of secondary indexes

For secondary indexes, it is often necessary to read all documents, compute
some function on them and associated the result with a document ID.

Currently, this requires something like

```rust
let reader = segment.get_store_reader(1)?;

for doc_id in segment.doc_ids_alive() {
    let doc = reader.get(doc_id)?;

    // Use doc and doc_id here ...
}
```

which can be simplified to

```rust
let reader = segment.get_store_reader(1)?;

for res in reader.enumerate() {
    let (doc_id, doc) = res?;

    // Use doc and doc_id here ...
}
```

using the method proposed here.

(I added a new method instead of modifying `StoreReader::iter` to make the
change backwards compatible, i.e. possible to include in a point release.)

Cargo.toml

@@ -15,7 +15,8 @@ rust-version = "1.63"
 exclude = ["benches/*.json", "benches/*.txt"]
 
 [dependencies]
-oneshot = "0.1.7"
+# Switch back to the non-forked oneshot crate once https://github.com/faern/oneshot/pull/35 is merged
+oneshot = { git = "https://github.com/fulmicoton/oneshot.git", rev = "c10a3ba" }
 base64 = "0.22.0"
 byteorder = "1.4.3"
 crc32fast = "1.3.2"
@@ -63,7 +64,7 @@ query-grammar = { version = "0.22.0", path = "./query-grammar", package = "tanti
 tantivy-bitpacker = { version = "0.6", path = "./bitpacker" }
 common = { version = "0.7", path = "./common/", package = "tantivy-common" }
 tokenizer-api = { version = "0.3", path = "./tokenizer-api", package = "tantivy-tokenizer-api" }
-sketches-ddsketch = { version = "0.3.0", features = ["use_serde"] }
+sketches-ddsketch = { version = "0.2.1", features = ["use_serde"] }
 futures-util = { version = "0.3.28", optional = true }
 fnv = "1.0.7"
 

benches/agg_bench.rs

@@ -47,7 +47,6 @@ fn bench_agg(mut group: InputGroup<Index>) {
     register!(group, average_f64);
     register!(group, average_f64_u64);
     register!(group, stats_f64);
-    register!(group, extendedstats_f64);
     register!(group, percentiles_f64);
     register!(group, terms_few);
     register!(group, terms_many);
@@ -106,12 +105,7 @@ fn stats_f64(index: &Index) {
     });
     exec_term_with_agg(index, agg_req)
 }
-fn extendedstats_f64(index: &Index) {
-    let agg_req = json!({
-        "extendedstats_f64": { "extended_stats": { "field": "score_f64", } }
-    });
-    exec_term_with_agg(index, agg_req)
-}
+
 fn percentiles_f64(index: &Index) {
     let agg_req = json!({
       "mypercentiles": {
@@ -355,7 +349,7 @@ fn get_test_index_bench(cardinality: Cardinality) -> tantivy::Result<Index> {
     let lg_norm = rand_distr::LogNormal::new(2.996f64, 0.979f64).unwrap();
 
     let many_terms_data = (0..150_000)
-        .map(|num| format!("author{num}"))
+        .map(|num| format!("author{}", num))
         .collect::<Vec<_>>();
     {
         let mut rng = StdRng::from_seed([1u8; 32]);

benches/index-bench.rs

@@ -141,12 +141,12 @@ pub fn hdfs_index_benchmark(c: &mut Criterion) {
                 let parse_json = false;
                 // for parse_json in [false, true] {
                 let suffix = if parse_json {
-                    format!("{suffix}-with-json-parsing")
+                    format!("{}-with-json-parsing", suffix)
                 } else {
                     suffix.to_string()
                 };
 
-                let bench_name = format!("{prefix}{suffix}");
+                let bench_name = format!("{}{}", prefix, suffix);
                 group.bench_function(bench_name, |b| {
                     benchmark(b, HDFS_LOGS, schema.clone(), commit, parse_json, is_dynamic)
                 });

columnar/Cargo.toml

@@ -23,12 +23,6 @@ downcast-rs = "1.2.0"
 proptest = "1"
 more-asserts = "0.3.1"
 rand = "0.8"
-binggan = "0.8.1"
-
-[[bench]]
-name = "bench_merge"
-harness = false
-
 
 [features]
 unstable = []

columnar/benches/bench_merge.rs

@@ -1,101 +0,0 @@
-#![feature(test)]
-extern crate test;
-
-use core::fmt;
-use std::fmt::{Display, Formatter};
-
-use binggan::{black_box, BenchRunner};
-use tantivy_columnar::*;
-
-enum Card {
-    Multi,
-    Sparse,
-    Dense,
-}
-impl Display for Card {
-    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
-        match self {
-            Card::Multi => write!(f, "multi"),
-            Card::Sparse => write!(f, "sparse"),
-            Card::Dense => write!(f, "dense"),
-        }
-    }
-}
-
-const NUM_DOCS: u32 = 100_000;
-
-fn generate_columnar(card: Card, num_docs: u32) -> ColumnarReader {
-    use tantivy_columnar::ColumnarWriter;
-
-    let mut columnar_writer = ColumnarWriter::default();
-
-    match card {
-        Card::Multi => {
-            columnar_writer.record_numerical(0, "price", 10u64);
-            columnar_writer.record_numerical(0, "price", 10u64);
-        }
-        _ => {}
-    }
-
-    for i in 0..num_docs {
-        match card {
-            Card::Multi | Card::Sparse => {
-                if i % 8 == 0 {
-                    columnar_writer.record_numerical(i, "price", i as u64);
-                }
-            }
-            Card::Dense => {
-                if i % 6 == 0 {
-                    columnar_writer.record_numerical(i, "price", i as u64);
-                }
-            }
-        }
-    }
-
-    let mut wrt: Vec<u8> = Vec::new();
-    columnar_writer.serialize(num_docs, None, &mut wrt).unwrap();
-
-    ColumnarReader::open(wrt).unwrap()
-}
-fn main() {
-    let mut inputs = Vec::new();
-
-    let mut add_combo = |card1: Card, card2: Card| {
-        inputs.push((
-            format!("merge_{card1}_and_{card2}"),
-            vec![
-                generate_columnar(card1, NUM_DOCS),
-                generate_columnar(card2, NUM_DOCS),
-            ],
-        ));
-    };
-
-    add_combo(Card::Multi, Card::Multi);
-    add_combo(Card::Dense, Card::Dense);
-    add_combo(Card::Sparse, Card::Sparse);
-    add_combo(Card::Sparse, Card::Dense);
-    add_combo(Card::Multi, Card::Dense);
-    add_combo(Card::Multi, Card::Sparse);
-
-    let runner: BenchRunner = BenchRunner::new();
-    let mut group = runner.new_group();
-    for (input_name, columnar_readers) in inputs.iter() {
-        group.register_with_input(
-            input_name,
-            columnar_readers,
-            move |columnar_readers: &Vec<ColumnarReader>| {
-                let mut out = vec![];
-                let columnar_readers = columnar_readers.iter().collect::<Vec<_>>();
-                let merge_row_order = StackMergeOrder::stack(&columnar_readers[..]);
-
-                let _ = black_box(merge_columnar(
-                    &columnar_readers,
-                    &[],
-                    merge_row_order.into(),
-                    &mut out,
-                ));
-            },
-        );
-    }
-    group.run();
-}

columnar/src/column_index/optional_index/mod.rs

@@ -196,7 +196,6 @@ impl Set<RowId> for OptionalIndex {
         } = row_addr_from_row_id(doc_id);
         let block_meta = self.block_metas[block_id as usize];
         let block = self.block(block_meta);
-
         let block_offset_row_id = match block {
             Block::Dense(dense_block) => dense_block.rank(in_block_row_id),
             Block::Sparse(sparse_block) => sparse_block.rank(in_block_row_id),

examples/date_time_field.rs

@@ -4,7 +4,7 @@
 
 use tantivy::collector::TopDocs;
 use tantivy::query::QueryParser;
-use tantivy::schema::{DateOptions, Document, Schema, Value, INDEXED, STORED, STRING};
+use tantivy::schema::{DateOptions, Document, Schema, INDEXED, STORED, STRING};
 use tantivy::{Index, IndexWriter, TantivyDocument};
 
 fn main() -> tantivy::Result<()> {
@@ -64,7 +64,6 @@ fn main() -> tantivy::Result<()> {
             assert!(retrieved_doc
                 .get_first(occurred_at)
                 .unwrap()
-                .as_value()
                 .as_datetime()
                 .is_some(),);
             assert_eq!(

examples/index_from_multiple_threads.rs

@@ -61,7 +61,7 @@ fn main() -> tantivy::Result<()> {
                         debris of the winter’s flooding; and sycamores with mottled, white, recumbent \
                         limbs and branches that arch over the pool"
                     ))?;
-            println!("add doc {i} from thread 1 - opstamp {opstamp}");
+            println!("add doc {} from thread 1 - opstamp {}", i, opstamp);
             thread::sleep(Duration::from_millis(20));
         }
         Result::<(), TantivyError>::Ok(())
@@ -82,7 +82,7 @@ fn main() -> tantivy::Result<()> {
                     body => "Some great book description..."
                 ))?
             };
-            println!("add doc {i} from thread 2 - opstamp {opstamp}");
+            println!("add doc {} from thread 2 - opstamp {}", i, opstamp);
             thread::sleep(Duration::from_millis(10));
         }
         Result::<(), TantivyError>::Ok(())

query-grammar/src/query_grammar.rs

@@ -1,4 +1,3 @@
-use std::borrow::Cow;
 use std::iter::once;
 
 use nom::branch::alt;
@@ -20,7 +19,7 @@ use crate::Occur;
 // Note: '-' char is only forbidden at the beginning of a field name, would be clearer to add it to
 // special characters.
 const SPECIAL_CHARS: &[char] = &[
-    '+', '^', '`', ':', '{', '}', '"', '\'', '[', ']', '(', ')', '!', '\\', '*', ' ',
+    '+', '^', '`', ':', '{', '}', '"', '[', ']', '(', ')', '!', '\\', '*', ' ',
 ];
 
 /// consume a field name followed by colon. Return the field name with escape sequence
@@ -42,92 +41,36 @@ fn field_name(inp: &str) -> IResult<&str, String> {
     )(inp)
 }
 
-const ESCAPE_IN_WORD: &[char] = &['^', '`', ':', '{', '}', '"', '\'', '[', ']', '(', ')', '\\'];
-
-fn interpret_escape(source: &str) -> String {
-    let mut res = String::with_capacity(source.len());
-    let mut in_escape = false;
-    let require_escape = |c: char| c.is_whitespace() || ESCAPE_IN_WORD.contains(&c) || c == '-';
-
-    for c in source.chars() {
-        if in_escape {
-            if !require_escape(c) {
-                // we re-add the escape sequence
-                res.push('\\');
-            }
-            res.push(c);
-            in_escape = false;
-        } else if c == '\\' {
-            in_escape = true;
-        } else {
-            res.push(c);
-        }
-    }
-    res
-}
-
 /// Consume a word outside of any context.
 // TODO should support escape sequences
-fn word(inp: &str) -> IResult<&str, Cow<str>> {
+fn word(inp: &str) -> IResult<&str, &str> {
     map_res(
         recognize(tuple((
-            alt((
-                preceded(char('\\'), anychar),
-                satisfy(|c| !c.is_whitespace() && !ESCAPE_IN_WORD.contains(&c) && c != '-'),
-            )),
-            many0(alt((
-                preceded(char('\\'), anychar),
-                satisfy(|c: char| !c.is_whitespace() && !ESCAPE_IN_WORD.contains(&c)),
-            ))),
+            satisfy(|c| {
+                !c.is_whitespace()
+                    && !['-', '^', '`', ':', '{', '}', '"', '[', ']', '(', ')'].contains(&c)
+            }),
+            many0(satisfy(|c: char| {
+                !c.is_whitespace() && ![':', '^', '{', '}', '"', '[', ']', '(', ')'].contains(&c)
+            })),
         ))),
         |s| match s {
             "OR" | "AND" | "NOT" | "IN" => Err(Error::new(inp, ErrorKind::Tag)),
-            s if s.contains('\\') => Ok(Cow::Owned(interpret_escape(s))),
-            s => Ok(Cow::Borrowed(s)),
+            _ => Ok(s),
         },
     )(inp)
 }
 
-fn word_infallible(
-    delimiter: &str,
-    emit_error: bool,
-) -> impl Fn(&str) -> JResult<&str, Option<Cow<str>>> + '_ {
-    // emit error is set when receiving an unescaped `:` should emit an error
-
-    move |inp| {
-        map(
-            opt_i_err(
-                preceded(
-                    multispace0,
-                    recognize(many1(alt((
-                        preceded(char::<&str, _>('\\'), anychar),
-                        satisfy(|c| !c.is_whitespace() && !delimiter.contains(c)),
-                    )))),
-                ),
-                "expected word",
+fn word_infallible(delimiter: &str) -> impl Fn(&str) -> JResult<&str, Option<&str>> + '_ {
+    |inp| {
+        opt_i_err(
+            preceded(
+                multispace0,
+                recognize(many1(satisfy(|c| {
+                    !c.is_whitespace() && !delimiter.contains(c)
+                }))),
             ),
-            |(opt_s, mut errors)| match opt_s {
-                Some(s) => {
-                    if emit_error
-                        && (s
-                            .as_bytes()
-                            .windows(2)
-                            .any(|window| window[0] != b'\\' && window[1] == b':')
-                            || s.starts_with(':'))
-                    {
-                        errors.push(LenientErrorInternal {
-                            pos: inp.len(),
-                            message: "parsed possible invalid field as term".to_string(),
-                        });
-                    }
-                    if s.contains('\\') {
-                        (Some(Cow::Owned(interpret_escape(s))), errors)
-                    } else {
-                        (Some(Cow::Borrowed(s)), errors)
-                    }
-                }
-                None => (None, errors),
-            },
+            "expected word",
         )(inp)
     }
 }
@@ -216,7 +159,7 @@ fn simple_term_infallible(
                 (value((), char('\'')), simple_quotes),
             ),
             // numbers are parsed with words in this case, as we allow string starting with a -
-            map(word_infallible(delimiter, true), |(text, errors)| {
+            map(word_infallible(delimiter), |(text, errors)| {
                 (text.map(|text| (Delimiter::None, text.to_string())), errors)
             }),
         )(inp)
@@ -379,6 +322,15 @@ fn literal_no_group_infallible(inp: &str) -> JResult<&str, Option<UserInputAst>>
         |((field_name, _, leaf), mut errors)| {
             (
                 leaf.map(|leaf| {
+                    if matches!(&leaf, UserInputLeaf::Literal(literal)
+                            if literal.phrase.contains(':') && literal.delimiter == Delimiter::None)
+                        && field_name.is_none()
+                    {
+                        errors.push(LenientErrorInternal {
+                            pos: inp.len(),
+                            message: "parsed possible invalid field as term".to_string(),
+                        });
+                    }
                     if matches!(&leaf, UserInputLeaf::Literal(literal)
                             if literal.phrase == "NOT" && literal.delimiter == Delimiter::None)
                         && field_name.is_none()
@@ -497,20 +449,20 @@ fn range_infallible(inp: &str) -> JResult<&str, UserInputLeaf> {
         tuple_infallible((
             opt_i(anychar),
             space0_infallible,
-            word_infallible("]}", false),
+            word_infallible("]}"),
             space1_infallible,
             opt_i_err(
                 terminated(tag("TO"), alt((value((), multispace1), value((), eof)))),
                 "missing keyword TO",
             ),
-            word_infallible("]}", false),
+            word_infallible("]}"),
             opt_i_err(one_of("]}"), "missing range delimiter"),
         )),
         |(
             (lower_bound_kind, _multispace0, lower, _multispace1, to, upper, upper_bound_kind),
             errs,
         )| {
-            let lower_bound = match (lower_bound_kind, lower.as_deref()) {
+            let lower_bound = match (lower_bound_kind, lower) {
                 (_, Some("*")) => UserInputBound::Unbounded,
                 (_, None) => UserInputBound::Unbounded,
                 // if it is some, TO was actually the bound (i.e. [TO TO something])
@@ -519,7 +471,7 @@ fn range_infallible(inp: &str) -> JResult<&str, UserInputLeaf> {
                 (Some('{'), Some(bound)) => UserInputBound::Exclusive(bound.to_string()),
                 _ => unreachable!("precondition failed, range did not start with [ or {{"),
             };
-            let upper_bound = match (upper_bound_kind, upper.as_deref()) {
+            let upper_bound = match (upper_bound_kind, upper) {
                 (_, Some("*")) => UserInputBound::Unbounded,
                 (_, None) => UserInputBound::Unbounded,
                 (Some(']'), Some(bound)) => UserInputBound::Inclusive(bound.to_string()),
@@ -536,7 +488,7 @@ fn range_infallible(inp: &str) -> JResult<&str, UserInputLeaf> {
             (
                 (
                     value((), tag(">=")),
-                    map(word_infallible("", false), |(bound, err)| {
+                    map(word_infallible(""), |(bound, err)| {
                         (
                             (
                                 bound
@@ -550,7 +502,7 @@ fn range_infallible(inp: &str) -> JResult<&str, UserInputLeaf> {
                 ),
                 (
                     value((), tag("<=")),
-                    map(word_infallible("", false), |(bound, err)| {
+                    map(word_infallible(""), |(bound, err)| {
                         (
                             (
                                 UserInputBound::Unbounded,
@@ -564,7 +516,7 @@ fn range_infallible(inp: &str) -> JResult<&str, UserInputLeaf> {
                 ),
                 (
                     value((), tag(">")),
-                    map(word_infallible("", false), |(bound, err)| {
+                    map(word_infallible(""), |(bound, err)| {
                         (
                             (
                                 bound
@@ -578,7 +530,7 @@ fn range_infallible(inp: &str) -> JResult<&str, UserInputLeaf> {
                 ),
                 (
                     value((), tag("<")),
-                    map(word_infallible("", false), |(bound, err)| {
+                    map(word_infallible(""), |(bound, err)| {
                         (
                             (
                                 UserInputBound::Unbounded,
@@ -1205,12 +1157,6 @@ mod test {
         test_parse_query_to_ast_helper("weight: <= 70", "\"weight\":{\"*\" TO \"70\"]");
 
         test_parse_query_to_ast_helper("weight: <= 70.5", "\"weight\":{\"*\" TO \"70.5\"]");
-
-        test_parse_query_to_ast_helper(">a", "{\"a\" TO \"*\"}");
-        test_parse_query_to_ast_helper(">=a", "[\"a\" TO \"*\"}");
-        test_parse_query_to_ast_helper("<a", "{\"*\" TO \"a\"}");
-        test_parse_query_to_ast_helper("<=a", "{\"*\" TO \"a\"]");
-        test_parse_query_to_ast_helper("<=bsd", "{\"*\" TO \"bsd\"]");
     }
 
     #[test]
@@ -1644,21 +1590,5 @@ mod test {
             r#"myfield:'hello\"happy\'tax'"#,
             r#""myfield":'hello"happy'tax'"#,
         );
-        // we don't process escape sequence for chars which don't require it
-        test_parse_query_to_ast_helper(r#"abc\*"#, r#"abc\*"#);
-    }
-
-    #[test]
-    fn test_queries_with_colons() {
-        test_parse_query_to_ast_helper(r#""abc:def""#, r#""abc:def""#);
-        test_parse_query_to_ast_helper(r#"'abc:def'"#, r#"'abc:def'"#);
-        test_parse_query_to_ast_helper(r#"abc\:def"#, r#"abc:def"#);
-        test_parse_query_to_ast_helper(r#""abc\:def""#, r#""abc:def""#);
-        test_parse_query_to_ast_helper(r#"'abc\:def'"#, r#"'abc:def'"#);
-    }
-
-    #[test]
-    fn test_invalid_field() {
-        test_is_parse_err(r#"!bc:def"#, "!bc:def");
     }
 }

src/aggregation/agg_req.rs

@@ -34,7 +34,7 @@ use super::bucket::{
     DateHistogramAggregationReq, HistogramAggregation, RangeAggregation, TermsAggregation,
 };
 use super::metric::{
-    AverageAggregation, CountAggregation, ExtendedStatsAggregation, MaxAggregation, MinAggregation,
+    AverageAggregation, CountAggregation, MaxAggregation, MinAggregation,
     PercentilesAggregationReq, StatsAggregation, SumAggregation, TopHitsAggregation,
 };
 
@@ -146,11 +146,6 @@ pub enum AggregationVariants {
     /// extracted values.
     #[serde(rename = "stats")]
     Stats(StatsAggregation),
-    /// Computes a collection of estended statistics (`min`, `max`, `sum`, `count`, `avg`,
-    /// `sum_of_squares`, `variance`, `variance_sampling`, `std_deviation`,
-    /// `std_deviation_sampling`) over the  extracted values.
-    #[serde(rename = "extended_stats")]
-    ExtendedStats(ExtendedStatsAggregation),
     /// Computes the sum of the extracted values.
     #[serde(rename = "sum")]
     Sum(SumAggregation),
@@ -175,7 +170,6 @@ impl AggregationVariants {
             AggregationVariants::Max(max) => vec![max.field_name()],
             AggregationVariants::Min(min) => vec![min.field_name()],
             AggregationVariants::Stats(stats) => vec![stats.field_name()],
-            AggregationVariants::ExtendedStats(extended_stats) => vec![extended_stats.field_name()],
             AggregationVariants::Sum(sum) => vec![sum.field_name()],
             AggregationVariants::Percentiles(per) => vec![per.field_name()],
             AggregationVariants::TopHits(top_hits) => top_hits.field_names(),
@@ -203,12 +197,6 @@ impl AggregationVariants {
             _ => None,
         }
     }
-    pub(crate) fn as_top_hits(&self) -> Option<&TopHitsAggregation> {
-        match &self {
-            AggregationVariants::TopHits(top_hits) => Some(top_hits),
-            _ => None,
-        }
-    }
 
     pub(crate) fn as_percentile(&self) -> Option<&PercentilesAggregationReq> {
         match &self {

src/aggregation/agg_req_with_accessor.rs

@@ -11,8 +11,8 @@ use super::bucket::{
     DateHistogramAggregationReq, HistogramAggregation, RangeAggregation, TermsAggregation,
 };
 use super::metric::{
-    AverageAggregation, CountAggregation, ExtendedStatsAggregation, MaxAggregation, MinAggregation,
-    StatsAggregation, SumAggregation,
+    AverageAggregation, CountAggregation, MaxAggregation, MinAggregation, StatsAggregation,
+    SumAggregation,
 };
 use super::segment_agg_result::AggregationLimits;
 use super::VecWithNames;
@@ -276,10 +276,6 @@ impl AggregationWithAccessor {
                 field: ref field_name,
                 ..
             })
-            | ExtendedStats(ExtendedStatsAggregation {
-                field: ref field_name,
-                ..
-            })
             | Sum(SumAggregation {
                 field: ref field_name,
                 ..
@@ -339,8 +335,8 @@ fn get_missing_val(
         }
         _ => {
             return Err(crate::TantivyError::InvalidArgument(format!(
-                "Missing value {missing:?} for field {field_name} is not supported for column \
-                 type {column_type:?}"
+                "Missing value {:?} for field {} is not supported for column type {:?}",
+                missing, field_name, column_type
             )));
         }
     };
@@ -407,7 +403,7 @@ fn get_dynamic_columns(
         .iter()
         .map(|h| h.open())
         .collect::<io::Result<_>>()?;
-    assert!(!ff_fields.is_empty(), "field {field_name} not found");
+    assert!(!ff_fields.is_empty(), "field {} not found", field_name);
     Ok(cols)
 }
 

src/aggregation/agg_result.rs

@@ -8,9 +8,7 @@ use rustc_hash::FxHashMap;
 use serde::{Deserialize, Serialize};
 
 use super::bucket::GetDocCount;
-use super::metric::{
-    ExtendedStats, PercentilesMetricResult, SingleMetricResult, Stats, TopHitsMetricResult,
-};
+use super::metric::{PercentilesMetricResult, SingleMetricResult, Stats, TopHitsMetricResult};
 use super::{AggregationError, Key};
 use crate::TantivyError;
 
@@ -90,8 +88,6 @@ pub enum MetricResult {
     Min(SingleMetricResult),
     /// Stats metric result.
     Stats(Stats),
-    /// ExtendedStats metric result.
-    ExtendedStats(Box<ExtendedStats>),
     /// Sum metric result.
     Sum(SingleMetricResult),
     /// Percentiles metric result.
@@ -108,7 +104,6 @@ impl MetricResult {
             MetricResult::Max(max) => Ok(max.value),
             MetricResult::Min(min) => Ok(min.value),
             MetricResult::Stats(stats) => stats.get_value(agg_property),
-            MetricResult::ExtendedStats(extended_stats) => extended_stats.get_value(agg_property),
             MetricResult::Sum(sum) => Ok(sum.value),
             MetricResult::Percentiles(_) => Err(TantivyError::AggregationError(
                 AggregationError::InvalidRequest("percentiles can't be used to order".to_string()),

src/aggregation/bucket/term_agg.rs

@@ -357,7 +357,8 @@ impl SegmentTermCollector {
     ) -> crate::Result<Self> {
         if field_type == ColumnType::Bytes {
             return Err(TantivyError::InvalidArgument(format!(
-                "terms aggregation is not supported for column type {field_type:?}"
+                "terms aggregation is not supported for column type {:?}",
+                field_type
             )));
         }
         let term_buckets = TermBuckets::default();

src/aggregation/intermediate_agg_result.rs

@@ -19,8 +19,8 @@ use super::bucket::{
     GetDocCount, Order, OrderTarget, RangeAggregation, TermsAggregation,
 };
 use super::metric::{
-    IntermediateAverage, IntermediateCount, IntermediateExtendedStats, IntermediateMax,
-    IntermediateMin, IntermediateStats, IntermediateSum, PercentilesCollector, TopHitsTopNComputer,
+    IntermediateAverage, IntermediateCount, IntermediateMax, IntermediateMin, IntermediateStats,
+    IntermediateSum, PercentilesCollector, TopHitsTopNComputer,
 };
 use super::segment_agg_result::AggregationLimits;
 use super::{format_date, AggregationError, Key, SerializedKey};
@@ -215,9 +215,6 @@ pub(crate) fn empty_from_req(req: &Aggregation) -> IntermediateAggregationResult
         Stats(_) => IntermediateAggregationResult::Metric(IntermediateMetricResult::Stats(
             IntermediateStats::default(),
         )),
-        ExtendedStats(_) => IntermediateAggregationResult::Metric(
-            IntermediateMetricResult::ExtendedStats(IntermediateExtendedStats::default()),
-        ),
         Sum(_) => IntermediateAggregationResult::Metric(IntermediateMetricResult::Sum(
             IntermediateSum::default(),
         )),
@@ -225,7 +222,7 @@ pub(crate) fn empty_from_req(req: &Aggregation) -> IntermediateAggregationResult
             IntermediateMetricResult::Percentiles(PercentilesCollector::default()),
         ),
         TopHits(ref req) => IntermediateAggregationResult::Metric(
-            IntermediateMetricResult::TopHits(TopHitsTopNComputer::new(req)),
+            IntermediateMetricResult::TopHits(TopHitsTopNComputer::new(req.clone())),
         ),
     }
 }
@@ -285,8 +282,6 @@ pub enum IntermediateMetricResult {
     Min(IntermediateMin),
     /// Intermediate stats result.
     Stats(IntermediateStats),
-    /// Intermediate stats result.
-    ExtendedStats(IntermediateExtendedStats),
     /// Intermediate sum result.
     Sum(IntermediateSum),
     /// Intermediate top_hits result
@@ -311,9 +306,6 @@ impl IntermediateMetricResult {
             IntermediateMetricResult::Stats(intermediate_stats) => {
                 MetricResult::Stats(intermediate_stats.finalize())
             }
-            IntermediateMetricResult::ExtendedStats(intermediate_stats) => {
-                MetricResult::ExtendedStats(intermediate_stats.finalize())
-            }
             IntermediateMetricResult::Sum(intermediate_sum) => {
                 MetricResult::Sum(intermediate_sum.finalize().into())
             }
@@ -354,12 +346,6 @@ impl IntermediateMetricResult {
             ) => {
                 stats_left.merge_fruits(stats_right);
             }
-            (
-                IntermediateMetricResult::ExtendedStats(extended_stats_left),
-                IntermediateMetricResult::ExtendedStats(extended_stats_right),
-            ) => {
-                extended_stats_left.merge_fruits(extended_stats_right);
-            }
             (IntermediateMetricResult::Sum(sum_left), IntermediateMetricResult::Sum(sum_right)) => {
                 sum_left.merge_fruits(sum_right);
             }

src/aggregation/metric/mod.rs

@@ -18,7 +18,6 @@
 
 mod average;
 mod count;
-mod extended_stats;
 mod max;
 mod min;
 mod percentiles;
@@ -30,7 +29,6 @@ use std::collections::HashMap;
 
 pub use average::*;
 pub use count::*;
-pub use extended_stats::*;
 pub use max::*;
 pub use min::*;
 pub use percentiles::*;

src/aggregation/metric/stats.rs

@@ -1,5 +1,3 @@
-use std::fmt::Debug;
-
 use serde::{Deserialize, Serialize};
 
 use super::*;
@@ -87,15 +85,13 @@ impl Stats {
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct IntermediateStats {
     /// The number of extracted values.
-    pub(crate) count: u64,
+    count: u64,
     /// The sum of the extracted values.
-    pub(crate) sum: f64,
-    /// delta for sum needed for [Kahan algorithm for summation](https://en.wikipedia.org/wiki/Kahan_summation_algorithm)
-    pub(crate) delta: f64,
+    sum: f64,
     /// The min value.
-    pub(crate) min: f64,
+    min: f64,
     /// The max value.
-    pub(crate) max: f64,
+    max: f64,
 }
 
 impl Default for IntermediateStats {
@@ -103,7 +99,6 @@ impl Default for IntermediateStats {
         Self {
             count: 0,
             sum: 0.0,
-            delta: 0.0,
             min: f64::MAX,
             max: f64::MIN,
         }
@@ -114,13 +109,7 @@ impl IntermediateStats {
     /// Merges the other stats intermediate result into self.
     pub fn merge_fruits(&mut self, other: IntermediateStats) {
         self.count += other.count;
-
-        // kahan algorithm for sum
-        let y = other.sum - (self.delta + other.delta);
-        let t = self.sum + y;
-        self.delta = (t - self.sum) - y;
-        self.sum = t;
-
+        self.sum += other.sum;
         self.min = self.min.min(other.min);
         self.max = self.max.max(other.max);
     }
@@ -152,15 +141,9 @@ impl IntermediateStats {
     }
 
     #[inline]
-    pub(in crate::aggregation::metric) fn collect(&mut self, value: f64) {
+    fn collect(&mut self, value: f64) {
         self.count += 1;
-
-        // kahan algorithm for sum
-        let y = value - self.delta;
-        let t = self.sum + y;
-        self.delta = (t - self.sum) - y;
-        self.sum = t;
-
+        self.sum += value;
         self.min = self.min.min(value);
         self.max = self.max.max(value);
     }
@@ -305,6 +288,7 @@ impl SegmentAggregationCollector for SegmentStatsCollector {
 
 #[cfg(test)]
 mod tests {
+
     use serde_json::Value;
 
     use crate::aggregation::agg_req::{Aggregation, Aggregations};

src/aggregation/metric/top_hits.rs

@@ -1,7 +1,7 @@
 use std::collections::HashMap;
 use std::net::Ipv6Addr;
 
-use columnar::{Column, ColumnType, ColumnarReader, DynamicColumn};
+use columnar::{ColumnarReader, DynamicColumn};
 use common::json_path_writer::JSON_PATH_SEGMENT_SEP_STR;
 use common::DateTime;
 use regex::Regex;
@@ -131,8 +131,8 @@ impl<'de> Deserialize<'de> for KeyOrder {
         ))?;
         if key_order.next().is_some() {
             return Err(serde::de::Error::custom(format!(
-                "Expected exactly one key-value pair in sort parameter of top_hits, found \
-                 {key_order:?}"
+                "Expected exactly one key-value pair in sort parameter of top_hits, found {:?}",
+                key_order
             )));
         }
         Ok(Self { field, order })
@@ -144,22 +144,27 @@ fn globbed_string_to_regex(glob: &str) -> Result<Regex, crate::TantivyError> {
     // Replace `*` glob with `.*` regex
     let sanitized = format!("^{}$", regex::escape(glob).replace(r"\*", ".*"));
     Regex::new(&sanitized.replace('*', ".*")).map_err(|e| {
-        crate::TantivyError::SchemaError(format!("Invalid regex '{glob}' in docvalue_fields: {e}"))
+        crate::TantivyError::SchemaError(format!(
+            "Invalid regex '{}' in docvalue_fields: {}",
+            glob, e
+        ))
     })
 }
 
 fn use_doc_value_fields_err(parameter: &str) -> crate::Result<()> {
     Err(crate::TantivyError::AggregationError(
         AggregationError::InvalidRequest(format!(
-            "The `{parameter}` parameter is not supported, only `docvalue_fields` is supported in \
-             `top_hits` aggregation"
+            "The `{}` parameter is not supported, only `docvalue_fields` is supported in \
+             `top_hits` aggregation",
+            parameter
         )),
     ))
 }
 fn unsupported_err(parameter: &str) -> crate::Result<()> {
     Err(crate::TantivyError::AggregationError(
         AggregationError::InvalidRequest(format!(
-            "The `{parameter}` parameter is not supported in the `top_hits` aggregation"
+            "The `{}` parameter is not supported in the `top_hits` aggregation",
+            parameter
         )),
     ))
 }
@@ -212,7 +217,8 @@ impl TopHitsAggregation {
                     .collect::<Vec<_>>();
                 assert!(
                     !fields.is_empty(),
-                    "No fields matched the glob '{field}' in docvalue_fields"
+                    "No fields matched the glob '{}' in docvalue_fields",
+                    field
                 );
                 Ok(fields)
             })
@@ -248,7 +254,7 @@ impl TopHitsAggregation {
             .map(|field| {
                 let accessors = accessors
                     .get(field)
-                    .unwrap_or_else(|| panic!("field '{field}' not found in accessors"));
+                    .unwrap_or_else(|| panic!("field '{}' not found in accessors", field));
 
                 let values: Vec<FastFieldValue> = accessors
                     .iter()
@@ -443,10 +449,10 @@ impl std::cmp::PartialEq for TopHitsTopNComputer {
 
 impl TopHitsTopNComputer {
     /// Create a new TopHitsCollector
-    pub fn new(req: &TopHitsAggregation) -> Self {
+    pub fn new(req: TopHitsAggregation) -> Self {
         Self {
             top_n: TopNComputer::new(req.size + req.from.unwrap_or(0)),
-            req: req.clone(),
+            req,
         }
     }
 
@@ -491,6 +497,7 @@ impl TopHitsTopNComputer {
 pub(crate) struct TopHitsSegmentCollector {
     segment_ordinal: SegmentOrdinal,
     accessor_idx: usize,
+    req: TopHitsAggregation,
     top_n: TopNComputer<Vec<DocValueAndOrder>, DocAddress, false>,
 }
 
@@ -501,6 +508,7 @@ impl TopHitsSegmentCollector {
         segment_ordinal: SegmentOrdinal,
     ) -> Self {
         Self {
+            req: req.clone(),
             top_n: TopNComputer::new(req.size + req.from.unwrap_or(0)),
             segment_ordinal,
             accessor_idx,
@@ -509,13 +517,14 @@ impl TopHitsSegmentCollector {
     fn into_top_hits_collector(
         self,
         value_accessors: &HashMap<String, Vec<DynamicColumn>>,
-        req: &TopHitsAggregation,
     ) -> TopHitsTopNComputer {
-        let mut top_hits_computer = TopHitsTopNComputer::new(req);
+        let mut top_hits_computer = TopHitsTopNComputer::new(self.req.clone());
         let top_results = self.top_n.into_vec();
 
         for res in top_results {
-            let doc_value_fields = req.get_document_field_data(value_accessors, res.doc.doc_id);
+            let doc_value_fields = self
+                .req
+                .get_document_field_data(value_accessors, res.doc.doc_id);
             top_hits_computer.collect(
                 DocSortValuesAndFields {
                     sorts: res.feature,
@@ -527,15 +536,34 @@ impl TopHitsSegmentCollector {
 
         top_hits_computer
     }
+}
 
-    /// TODO add a specialized variant for a single sort field
-    fn collect_with(
+impl SegmentAggregationCollector for TopHitsSegmentCollector {
+    fn add_intermediate_aggregation_result(
+        self: Box<Self>,
+        agg_with_accessor: &crate::aggregation::agg_req_with_accessor::AggregationsWithAccessor,
+        results: &mut crate::aggregation::intermediate_agg_result::IntermediateAggregationResults,
+    ) -> crate::Result<()> {
+        let name = agg_with_accessor.aggs.keys[self.accessor_idx].to_string();
+
+        let value_accessors = &agg_with_accessor.aggs.values[self.accessor_idx].value_accessors;
+
+        let intermediate_result =
+            IntermediateMetricResult::TopHits(self.into_top_hits_collector(value_accessors));
+        results.push(
+            name,
+            IntermediateAggregationResult::Metric(intermediate_result),
+        )
+    }
+
+    fn collect(
         &mut self,
         doc_id: crate::DocId,
-        req: &TopHitsAggregation,
-        accessors: &[(Column<u64>, ColumnType)],
+        agg_with_accessor: &mut crate::aggregation::agg_req_with_accessor::AggregationsWithAccessor,
     ) -> crate::Result<()> {
-        let sorts: Vec<DocValueAndOrder> = req
+        let accessors = &agg_with_accessor.aggs.values[self.accessor_idx].accessors;
+        let sorts: Vec<DocValueAndOrder> = self
+            .req
             .sort
             .iter()
             .enumerate()
@@ -560,62 +588,15 @@ impl TopHitsSegmentCollector {
         );
         Ok(())
     }
-}
-
-impl SegmentAggregationCollector for TopHitsSegmentCollector {
-    fn add_intermediate_aggregation_result(
-        self: Box<Self>,
-        agg_with_accessor: &crate::aggregation::agg_req_with_accessor::AggregationsWithAccessor,
-        results: &mut crate::aggregation::intermediate_agg_result::IntermediateAggregationResults,
-    ) -> crate::Result<()> {
-        let name = agg_with_accessor.aggs.keys[self.accessor_idx].to_string();
-
-        let value_accessors = &agg_with_accessor.aggs.values[self.accessor_idx].value_accessors;
-        let tophits_req = &agg_with_accessor.aggs.values[self.accessor_idx]
-            .agg
-            .agg
-            .as_top_hits()
-            .expect("aggregation request must be of type top hits");
-
-        let intermediate_result = IntermediateMetricResult::TopHits(
-            self.into_top_hits_collector(value_accessors, tophits_req),
-        );
-        results.push(
-            name,
-            IntermediateAggregationResult::Metric(intermediate_result),
-        )
-    }
-
-    /// TODO: Consider a caching layer to reduce the call overhead
-    fn collect(
-        &mut self,
-        doc_id: crate::DocId,
-        agg_with_accessor: &mut crate::aggregation::agg_req_with_accessor::AggregationsWithAccessor,
-    ) -> crate::Result<()> {
-        let tophits_req = &agg_with_accessor.aggs.values[self.accessor_idx]
-            .agg
-            .agg
-            .as_top_hits()
-            .expect("aggregation request must be of type top hits");
-        let accessors = &agg_with_accessor.aggs.values[self.accessor_idx].accessors;
-        self.collect_with(doc_id, tophits_req, accessors)?;
-        Ok(())
-    }
 
     fn collect_block(
         &mut self,
         docs: &[crate::DocId],
         agg_with_accessor: &mut crate::aggregation::agg_req_with_accessor::AggregationsWithAccessor,
     ) -> crate::Result<()> {
-        let tophits_req = &agg_with_accessor.aggs.values[self.accessor_idx]
-            .agg
-            .agg
-            .as_top_hits()
-            .expect("aggregation request must be of type top hits");
-        let accessors = &agg_with_accessor.aggs.values[self.accessor_idx].accessors;
         // TODO: Consider getting fields with the column block accessor.
         for doc in docs {
-            self.collect_with(*doc, tophits_req, accessors)?;
+            self.collect(*doc, agg_with_accessor)?;
         }
         Ok(())
     }

src/aggregation/mod.rs

@@ -158,14 +158,15 @@ use serde::de::{self, Visitor};
 use serde::{Deserialize, Deserializer, Serialize};
 
 fn parse_str_into_f64<E: de::Error>(value: &str) -> Result<f64, E> {
-    let parsed = value
-        .parse::<f64>()
-        .map_err(|_err| de::Error::custom(format!("Failed to parse f64 from string: {value:?}")))?;
+    let parsed = value.parse::<f64>().map_err(|_err| {
+        de::Error::custom(format!("Failed to parse f64 from string: {:?}", value))
+    })?;
 
     // Check if the parsed value is NaN or infinity
     if parsed.is_nan() || parsed.is_infinite() {
         Err(de::Error::custom(format!(
-            "Value is not a valid f64 (NaN or Infinity): {value:?}"
+            "Value is not a valid f64 (NaN or Infinity): {:?}",
+            value
         )))
     } else {
         Ok(parsed)

src/aggregation/segment_agg_result.rs

@@ -11,12 +11,12 @@ use super::agg_req_with_accessor::{AggregationWithAccessor, AggregationsWithAcce
 use super::bucket::{SegmentHistogramCollector, SegmentRangeCollector, SegmentTermCollector};
 use super::intermediate_agg_result::IntermediateAggregationResults;
 use super::metric::{
-    AverageAggregation, CountAggregation, ExtendedStatsAggregation, MaxAggregation, MinAggregation,
+    AverageAggregation, CountAggregation, MaxAggregation, MinAggregation,
     SegmentPercentilesCollector, SegmentStatsCollector, SegmentStatsType, StatsAggregation,
     SumAggregation,
 };
 use crate::aggregation::bucket::TermMissingAgg;
-use crate::aggregation::metric::{SegmentExtendedStatsCollector, TopHitsSegmentCollector};
+use crate::aggregation::metric::TopHitsSegmentCollector;
 
 pub(crate) trait SegmentAggregationCollector: CollectorClone + Debug {
     fn add_intermediate_aggregation_result(
@@ -148,9 +148,6 @@ pub(crate) fn build_single_agg_segment_collector(
             accessor_idx,
             *missing,
         ))),
-        ExtendedStats(ExtendedStatsAggregation { missing, sigma, .. }) => Ok(Box::new(
-            SegmentExtendedStatsCollector::from_req(req.field_type, *sigma, accessor_idx, *missing),
-        )),
         Sum(SumAggregation { missing, .. }) => Ok(Box::new(SegmentStatsCollector::from_req(
             req.field_type,
             SegmentStatsType::Sum,

src/collector/facet_collector.rs

@@ -598,7 +598,7 @@ mod tests {
                 let mid = n % 4;
                 n /= 4;
                 let leaf = n % 5;
-                Facet::from(&format!("/top{top}/mid{mid}/leaf{leaf}"))
+                Facet::from(&format!("/top{}/mid{}/leaf{}", top, mid, leaf))
             })
             .collect();
         for i in 0..num_facets * 10 {
@@ -737,7 +737,7 @@ mod tests {
             vec![("a", 10), ("b", 100), ("c", 7), ("d", 12), ("e", 21)]
                 .into_iter()
                 .flat_map(|(c, count)| {
-                    let facet = Facet::from(&format!("/facet/{c}"));
+                    let facet = Facet::from(&format!("/facet/{}", c));
                     let doc = doc!(facet_field => facet);
                     iter::repeat(doc).take(count)
                 })
@@ -785,7 +785,7 @@ mod tests {
         let docs: Vec<TantivyDocument> = vec![("b", 2), ("a", 2), ("c", 4)]
             .into_iter()
             .flat_map(|(c, count)| {
-                let facet = Facet::from(&format!("/facet/{c}"));
+                let facet = Facet::from(&format!("/facet/{}", c));
                 let doc = doc!(facet_field => facet);
                 iter::repeat(doc).take(count)
             })

src/collector/top_score_collector.rs

@@ -871,10 +871,7 @@ mod tests {
     use crate::schema::{Field, Schema, FAST, STORED, TEXT};
     use crate::time::format_description::well_known::Rfc3339;
     use crate::time::OffsetDateTime;
-    use crate::{
-        assert_nearly_equals, DateTime, DocAddress, DocId, Index, IndexWriter, Order, Score,
-        SegmentReader,
-    };
+    use crate::{DateTime, DocAddress, DocId, Index, IndexWriter, Order, Score, SegmentReader};
 
     fn make_index() -> crate::Result<Index> {
         let mut schema_builder = Schema::builder();

src/core/executor.rs

@@ -195,7 +195,7 @@ mod tests {
         let (tx, rx) = crossbeam_channel::bounded::<()>(0);
         let rx = Arc::new(rx);
         let executor = Executor::multi_thread(3, "search-test").unwrap();
-        for _ in 0..1000 {
+        for i in 0..1000 {
             let counter_clone: Arc<AtomicU64> = counter.clone();
             let other_counter_clone: Arc<AtomicU64> = other_counter.clone();
 
@@ -203,18 +203,18 @@ mod tests {
             let rx_clone2 = rx.clone();
             let fut = executor.spawn_blocking(move || {
                 counter_clone.fetch_add(1, Ordering::SeqCst);
-                let _ = rx_clone.recv();
+                let () = rx_clone.recv().unwrap();
             });
             futures.push(fut);
             let other_fut = executor.spawn_blocking(move || {
                 other_counter_clone.fetch_add(1, Ordering::SeqCst);
-                let _ = rx_clone2.recv();
+                let () = rx_clone2.recv().unwrap();
             });
             other_futures.push(other_fut);
         }
 
         // We execute 100 futures.
-        for _ in 0..100 {
+        for i in 0..100 {
             tx.send(()).unwrap();
         }
 
@@ -226,7 +226,7 @@ mod tests {
         drop(other_futures);
 
         // We execute 100 futures.
-        for _ in 0..100 {
+        for i in 0..100 {
             tx.send(()).unwrap();
         }
 

src/core/json_utils.rs

@@ -338,14 +338,14 @@ mod tests {
         let mut term = Term::from_field_json_path(field, "attributes.color", false);
         term.append_type_and_str("red");
         assert_eq!(
-            format!("{term:?}"),
+            format!("{:?}", term),
             "Term(field=1, type=Json, path=attributes.color, type=Str, \"red\")"
         );
 
         let mut term = Term::from_field_json_path(field, "attributes.dimensions.width", false);
         term.append_type_and_fast_value(400i64);
         assert_eq!(
-            format!("{term:?}"),
+            format!("{:?}", term),
             "Term(field=1, type=Json, path=attributes.dimensions.width, type=I64, 400)"
         );
     }

src/directory/mmap_directory.rs

@@ -566,7 +566,7 @@ mod tests {
         let mmap_directory = MmapDirectory::create_from_tempdir().unwrap();
         let num_paths = 10;
         let paths: Vec<PathBuf> = (0..num_paths)
-            .map(|i| PathBuf::from(&*format!("file_{i}")))
+            .map(|i| PathBuf::from(&*format!("file_{}", i)))
             .collect();
         {
             for path in &paths {

src/fastfield/facet_reader.rs

@@ -62,7 +62,7 @@ impl FacetReader {
 
 #[cfg(test)]
 mod tests {
-    use crate::schema::{Facet, FacetOptions, SchemaBuilder, Value, STORED};
+    use crate::schema::{Facet, FacetOptions, SchemaBuilder, STORED};
     use crate::{DocAddress, Index, IndexWriter, TantivyDocument};
 
     #[test]
@@ -88,9 +88,7 @@ mod tests {
         let doc = searcher
             .doc::<TantivyDocument>(DocAddress::new(0u32, 0u32))
             .unwrap();
-        let value = doc
-            .get_first(facet_field)
-            .and_then(|v| v.as_value().as_facet());
+        let value = doc.get_first(facet_field).and_then(|v| v.as_facet());
         assert_eq!(value, None);
     }
 

src/index/index.rs

@@ -252,8 +252,9 @@ impl IndexBuilder {
                 let field_type = entry.field_type().value_type();
                 if !supported_field_types.contains(&field_type) {
                     return Err(TantivyError::InvalidArgument(format!(
-                        "Unsupported field type in sort_by_field: {field_type:?}. Supported field \
-                         types: {supported_field_types:?} ",
+                        "Unsupported field type in sort_by_field: {:?}. Supported field types: \
+                         {:?} ",
+                        field_type, supported_field_types,
                     )));
                 }
             }

src/index/segment_reader.rs

@@ -318,14 +318,14 @@ impl SegmentReader {
                         if create_canonical {
                             // Without expand dots enabled dots need to be escaped.
                             let escaped_json_path = json_path.replace('.', "\\.");
-                            let full_path = format!("{field_name}.{escaped_json_path}");
+                            let full_path = format!("{}.{}", field_name, escaped_json_path);
                             let full_path_unescaped = format!("{}.{}", field_name, &json_path);
                             map_to_canonical.insert(full_path_unescaped, full_path.to_string());
                             full_path
                         } else {
                             // With expand dots enabled, we can use '.' instead of '\u{1}'.
                             json_path_sep_to_dot(&mut json_path);
-                            format!("{field_name}.{json_path}")
+                            format!("{}.{}", field_name, json_path)
                         }
                     };
                     indexed_fields.extend(

src/indexer/index_writer.rs

@@ -816,7 +816,7 @@ mod tests {
     use crate::query::{BooleanQuery, Occur, Query, QueryParser, TermQuery};
     use crate::schema::{
         self, Facet, FacetOptions, IndexRecordOption, IpAddrOptions, NumericOptions, Schema,
-        TextFieldIndexing, TextOptions, Value, FAST, INDEXED, STORED, STRING, TEXT,
+        TextFieldIndexing, TextOptions, FAST, INDEXED, STORED, STRING, TEXT,
     };
     use crate::store::DOCSTORE_CACHE_CAPACITY;
     use crate::{
@@ -1979,13 +1979,7 @@ mod tests {
                 .unwrap();
             // test store iterator
             for doc in store_reader.iter::<TantivyDocument>(segment_reader.alive_bitset()) {
-                let id = doc
-                    .unwrap()
-                    .get_first(id_field)
-                    .unwrap()
-                    .as_value()
-                    .as_u64()
-                    .unwrap();
+                let id = doc.unwrap().get_first(id_field).unwrap().as_u64().unwrap();
                 assert!(expected_ids_and_num_occurrences.contains_key(&id));
             }
             // test store random access

src/indexer/merger.rs

@@ -696,7 +696,7 @@ impl IndexMerger {
             for old_doc_addr in doc_id_mapping.iter_old_doc_addrs() {
                 let doc_bytes_it = &mut document_iterators[old_doc_addr.segment_ord as usize];
                 if let Some(doc_bytes_res) = doc_bytes_it.next() {
-                    let doc_bytes = doc_bytes_res?;
+                    let (_, doc_bytes) = doc_bytes_res?;
                     store_writer.store_bytes(&doc_bytes)?;
                 } else {
                     return Err(DataCorruption::comment_only(format!(
@@ -728,7 +728,7 @@ impl IndexMerger {
                     || store_reader.decompressor() != store_writer.compressor().into()
                 {
                     for doc_bytes_res in store_reader.iter_raw(reader.alive_bitset()) {
-                        let doc_bytes = doc_bytes_res?;
+                        let (_, doc_bytes) = doc_bytes_res?;
                         store_writer.store_bytes(&doc_bytes)?;
                     }
                 } else {
@@ -787,8 +787,6 @@ impl IndexMerger {
 mod tests {
 
     use columnar::Column;
-    use proptest::prop_oneof;
-    use proptest::strategy::Strategy;
     use schema::FAST;
 
     use crate::collector::tests::{
@@ -796,11 +794,10 @@ mod tests {
     };
     use crate::collector::{Count, FacetCollector};
     use crate::index::{Index, SegmentId};
-    use crate::indexer::NoMergePolicy;
     use crate::query::{AllQuery, BooleanQuery, EnableScoring, Scorer, TermQuery};
     use crate::schema::{
         Facet, FacetOptions, IndexRecordOption, NumericOptions, TantivyDocument, Term,
-        TextFieldIndexing, Value, INDEXED, TEXT,
+        TextFieldIndexing, INDEXED, TEXT,
     };
     use crate::time::OffsetDateTime;
     use crate::{
@@ -912,24 +909,15 @@ mod tests {
             }
             {
                 let doc = searcher.doc::<TantivyDocument>(DocAddress::new(0, 0))?;
-                assert_eq!(
-                    doc.get_first(text_field).unwrap().as_value().as_str(),
-                    Some("af b")
-                );
+                assert_eq!(doc.get_first(text_field).unwrap().as_str(), Some("af b"));
             }
             {
                 let doc = searcher.doc::<TantivyDocument>(DocAddress::new(0, 1))?;
-                assert_eq!(
-                    doc.get_first(text_field).unwrap().as_value().as_str(),
-                    Some("a b c")
-                );
+                assert_eq!(doc.get_first(text_field).unwrap().as_str(), Some("a b c"));
             }
             {
                 let doc = searcher.doc::<TantivyDocument>(DocAddress::new(0, 2))?;
-                assert_eq!(
-                    doc.get_first(text_field).unwrap().as_value().as_str(),
-                    Some("a b c d")
-                );
+                assert_eq!(doc.get_first(text_field).unwrap().as_str(), Some("a b c d"));
             }
             {
                 let doc = searcher.doc::<TantivyDocument>(DocAddress::new(0, 3))?;
@@ -1534,112 +1522,6 @@ mod tests {
         Ok(())
     }
 
-    #[derive(Debug, Clone, Copy, Eq, PartialEq)]
-    enum IndexingOp {
-        ZeroVal,
-        OneVal { val: u64 },
-        TwoVal { val: u64 },
-        Commit,
-    }
-
-    fn balanced_operation_strategy() -> impl Strategy<Value = IndexingOp> {
-        prop_oneof![
-            (0u64..1u64).prop_map(|_| IndexingOp::ZeroVal),
-            (0u64..1u64).prop_map(|val| IndexingOp::OneVal { val }),
-            (0u64..1u64).prop_map(|val| IndexingOp::TwoVal { val }),
-            (0u64..1u64).prop_map(|_| IndexingOp::Commit),
-        ]
-    }
-
-    use proptest::prelude::*;
-    proptest! {
-        #[test]
-        fn test_merge_columnar_int_proptest(ops in proptest::collection::vec(balanced_operation_strategy(), 1..20)) {
-            assert!(test_merge_int_fields(&ops[..]).is_ok());
-        }
-    }
-    fn test_merge_int_fields(ops: &[IndexingOp]) -> crate::Result<()> {
-        if ops.iter().all(|op| *op == IndexingOp::Commit) {
-            return Ok(());
-        }
-        let expected_doc_and_vals: Vec<(u32, Vec<u64>)> = ops
-            .iter()
-            .filter(|op| *op != &IndexingOp::Commit)
-            .map(|op| match op {
-                IndexingOp::ZeroVal => vec![],
-                IndexingOp::OneVal { val } => vec![*val],
-                IndexingOp::TwoVal { val } => vec![*val, *val],
-                IndexingOp::Commit => unreachable!(),
-            })
-            .enumerate()
-            .map(|(id, val)| (id as u32, val))
-            .collect();
-
-        let mut schema_builder = schema::Schema::builder();
-        let int_options = NumericOptions::default().set_fast().set_indexed();
-        let int_field = schema_builder.add_u64_field("intvals", int_options);
-        let index = Index::create_in_ram(schema_builder.build());
-        {
-            let mut index_writer = index.writer_for_tests()?;
-            index_writer.set_merge_policy(Box::new(NoMergePolicy));
-            let index_doc = |index_writer: &mut IndexWriter, int_vals: &[u64]| {
-                let mut doc = TantivyDocument::default();
-                for &val in int_vals {
-                    doc.add_u64(int_field, val);
-                }
-                index_writer.add_document(doc).unwrap();
-            };
-
-            for op in ops {
-                match op {
-                    IndexingOp::ZeroVal => index_doc(&mut index_writer, &[]),
-                    IndexingOp::OneVal { val } => index_doc(&mut index_writer, &[*val]),
-                    IndexingOp::TwoVal { val } => index_doc(&mut index_writer, &[*val, *val]),
-                    IndexingOp::Commit => {
-                        index_writer.commit().expect("commit failed");
-                    }
-                }
-            }
-            index_writer.commit().expect("commit failed");
-        }
-        {
-            let mut segment_ids = index.searchable_segment_ids()?;
-            segment_ids.sort();
-            let mut index_writer: IndexWriter = index.writer_for_tests()?;
-            index_writer.merge(&segment_ids).wait()?;
-            index_writer.wait_merging_threads()?;
-        }
-        let reader = index.reader()?;
-        reader.reload()?;
-
-        let mut vals: Vec<u64> = Vec::new();
-        let mut test_vals = move |col: &Column<u64>, doc: DocId, expected: &[u64]| {
-            vals.clear();
-            vals.extend(col.values_for_doc(doc));
-            assert_eq!(&vals[..], expected);
-        };
-
-        let mut test_col = move |col: &Column<u64>, column_expected: &[(u32, Vec<u64>)]| {
-            for (doc_id, vals) in column_expected.iter() {
-                test_vals(col, *doc_id, vals);
-            }
-        };
-
-        {
-            let searcher = reader.searcher();
-            let segment = searcher.segment_reader(0u32);
-            let col = segment
-                .fast_fields()
-                .column_opt::<u64>("intvals")
-                .unwrap()
-                .unwrap();
-
-            test_col(&col, &expected_doc_and_vals);
-        }
-
-        Ok(())
-    }
-
     #[test]
     fn test_merge_multivalued_int_fields_simple() -> crate::Result<()> {
         let mut schema_builder = schema::Schema::builder();

src/indexer/merger_sorted_index_test.rs

@@ -7,7 +7,7 @@ mod tests {
     use crate::query::QueryParser;
     use crate::schema::{
         self, BytesOptions, Facet, FacetOptions, IndexRecordOption, NumericOptions,
-        TextFieldIndexing, TextOptions, Value,
+        TextFieldIndexing, TextOptions,
     };
     use crate::{
         DocAddress, DocSet, IndexSettings, IndexSortByField, IndexWriter, Order, TantivyDocument,
@@ -280,16 +280,13 @@ mod tests {
                 .doc::<TantivyDocument>(DocAddress::new(0, blubber_pos))
                 .unwrap();
             assert_eq!(
-                doc.get_first(my_text_field).unwrap().as_value().as_str(),
+                doc.get_first(my_text_field).unwrap().as_str(),
                 Some("blubber")
             );
             let doc = searcher
                 .doc::<TantivyDocument>(DocAddress::new(0, 0))
                 .unwrap();
-            assert_eq!(
-                doc.get_first(int_field).unwrap().as_value().as_u64(),
-                Some(1000)
-            );
+            assert_eq!(doc.get_first(int_field).unwrap().as_u64(), Some(1000));
         }
     }
 

src/indexer/mod.rs

@@ -216,7 +216,7 @@ mod tests_mmap {
         let test_query = |query_str: &str| {
             let query = parse_query.parse_query(query_str).unwrap();
             let num_docs = searcher.search(&query, &Count).unwrap();
-            assert_eq!(num_docs, 1, "{query_str}");
+            assert_eq!(num_docs, 1, "{}", query_str);
         };
         test_query(format!("json.{field_name_out}:test1").as_str());
         test_query(format!("json.a{field_name_out}:test2").as_str());
@@ -590,10 +590,10 @@ mod tests_mmap {
         let query_parser = QueryParser::for_index(&index, vec![]);
         // Test if field name can be queried
         for (indexed_field, val) in fields_and_vals.iter() {
-            let query_str = &format!("{indexed_field}:{val}");
+            let query_str = &format!("{}:{}", indexed_field, val);
             let query = query_parser.parse_query(query_str).unwrap();
             let count_docs = searcher.search(&*query, &TopDocs::with_limit(2)).unwrap();
-            assert!(!count_docs.is_empty(), "{indexed_field}:{val}");
+            assert!(!count_docs.is_empty(), "{}:{}", indexed_field, val);
         }
         // Test if field name can be used for aggregation
         for (field_name, val) in fields_and_vals.iter() {

src/indexer/segment_writer.rs

@@ -500,8 +500,8 @@ mod tests {
     use crate::postings::{Postings, TermInfo};
     use crate::query::{PhraseQuery, QueryParser};
     use crate::schema::{
-        Document, IndexRecordOption, OwnedValue, Schema, TextFieldIndexing, TextOptions, Value,
-        STORED, STRING, TEXT,
+        Document, IndexRecordOption, OwnedValue, Schema, TextFieldIndexing, TextOptions, STORED,
+        STRING, TEXT,
     };
     use crate::store::{Compressor, StoreReader, StoreWriter};
     use crate::time::format_description::well_known::Rfc3339;
@@ -555,12 +555,9 @@ mod tests {
         let doc = reader.get::<TantivyDocument>(0).unwrap();
 
         assert_eq!(doc.field_values().count(), 2);
+        assert_eq!(doc.get_all(text_field).next().unwrap().as_str(), Some("A"));
         assert_eq!(
-            doc.get_all(text_field).next().unwrap().as_value().as_str(),
-            Some("A")
-        );
-        assert_eq!(
-            doc.get_all(text_field).nth(1).unwrap().as_value().as_str(),
+            doc.get_all(text_field).nth(1).unwrap().as_str(),
             Some("title")
         );
     }

src/lib.rs

@@ -397,20 +397,16 @@ pub mod tests {
     #[macro_export]
     macro_rules! assert_nearly_equals {
         ($left:expr, $right:expr) => {{
-            assert_nearly_equals!($left, $right, 0.0005);
-        }};
-        ($left:expr, $right:expr, $epsilon:expr) => {{
-            match (&$left, &$right, &$epsilon) {
-                (left_val, right_val, epsilon_val) => {
+            match (&$left, &$right) {
+                (left_val, right_val) => {
                     let diff = (left_val - right_val).abs();
-
-                    if diff > *epsilon_val {
+                    let add = left_val.abs() + right_val.abs();
+                    if diff > 0.0005 * add {
                         panic!(
-                            r#"assertion failed: `abs(left-right)>epsilon`
-    left: `{:?}`,
-    right: `{:?}`,
-    epsilon: `{:?}`"#,
-                            &*left_val, &*right_val, &*epsilon_val
+                            r#"assertion failed: `(left ~= right)`
+  left: `{:?}`,
+ right: `{:?}`"#,
+                            &*left_val, &*right_val
                         )
                     }
                 }

src/query/fuzzy_query.rs

@@ -138,7 +138,8 @@ impl FuzzyTermQuery {
                 if json_path_type != Type::Str {
                     return Err(InvalidArgument(format!(
                         "The fuzzy term query requires a string path type for a json term. Found \
-                         {json_path_type:?}"
+                         {:?}",
+                        json_path_type
                     )));
                 }
             }

src/query/phrase_prefix_query/phrase_prefix_scorer.rs

@@ -2,7 +2,7 @@ use crate::docset::{DocSet, TERMINATED};
 use crate::fieldnorm::FieldNormReader;
 use crate::postings::Postings;
 use crate::query::bm25::Bm25Weight;
-use crate::query::phrase_query::{intersection_count, intersection_exists, PhraseScorer};
+use crate::query::phrase_query::{intersection_count, PhraseScorer};
 use crate::query::Scorer;
 use crate::{DocId, Score};
 
@@ -92,17 +92,14 @@ impl<TPostings: Postings> Scorer for PhraseKind<TPostings> {
     }
 }
 
-pub struct PhrasePrefixScorer<TPostings: Postings, const SCORING_ENABLED: bool> {
+pub struct PhrasePrefixScorer<TPostings: Postings> {
     phrase_scorer: PhraseKind<TPostings>,
     suffixes: Vec<TPostings>,
     suffix_offset: u32,
     phrase_count: u32,
-    suffix_position_buffer: Vec<u32>,
 }
 
-impl<TPostings: Postings, const SCORING_ENABLED: bool>
-    PhrasePrefixScorer<TPostings, SCORING_ENABLED>
-{
+impl<TPostings: Postings> PhrasePrefixScorer<TPostings> {
     // If similarity_weight is None, then scoring is disabled.
     pub fn new(
         mut term_postings: Vec<(usize, TPostings)>,
@@ -110,7 +107,7 @@ impl<TPostings: Postings, const SCORING_ENABLED: bool>
         fieldnorm_reader: FieldNormReader,
         suffixes: Vec<TPostings>,
         suffix_pos: usize,
-    ) -> PhrasePrefixScorer<TPostings, SCORING_ENABLED> {
+    ) -> PhrasePrefixScorer<TPostings> {
         // correct indices so we can merge with our suffix term the PhraseScorer doesn't know about
         let max_offset = term_postings
             .iter()
@@ -143,7 +140,6 @@ impl<TPostings: Postings, const SCORING_ENABLED: bool>
             suffixes,
             suffix_offset: (max_offset - suffix_pos) as u32,
             phrase_count: 0,
-            suffix_position_buffer: Vec::with_capacity(100),
         };
         if phrase_prefix_scorer.doc() != TERMINATED && !phrase_prefix_scorer.matches_prefix() {
             phrase_prefix_scorer.advance();
@@ -157,6 +153,7 @@ impl<TPostings: Postings, const SCORING_ENABLED: bool>
 
     fn matches_prefix(&mut self) -> bool {
         let mut count = 0;
+        let mut positions = Vec::new();
         let current_doc = self.doc();
         let pos_matching = self.phrase_scorer.get_intersection();
         for suffix in &mut self.suffixes {
@@ -165,27 +162,16 @@ impl<TPostings: Postings, const SCORING_ENABLED: bool>
             }
             let doc = suffix.seek(current_doc);
             if doc == current_doc {
-                suffix.positions_with_offset(self.suffix_offset, &mut self.suffix_position_buffer);
-                if SCORING_ENABLED {
-                    count += intersection_count(pos_matching, &self.suffix_position_buffer);
-                } else {
-                    if intersection_exists(pos_matching, &self.suffix_position_buffer) {
-                        return true;
-                    }
-                }
+                suffix.positions_with_offset(self.suffix_offset, &mut positions);
+                count += intersection_count(pos_matching, &positions);
             }
         }
-        if !SCORING_ENABLED {
-            return false;
-        }
         self.phrase_count = count as u32;
         count != 0
     }
 }
 
-impl<TPostings: Postings, const SCORING_ENABLED: bool> DocSet
-    for PhrasePrefixScorer<TPostings, SCORING_ENABLED>
-{
+impl<TPostings: Postings> DocSet for PhrasePrefixScorer<TPostings> {
     fn advance(&mut self) -> DocId {
         loop {
             let doc = self.phrase_scorer.advance();
@@ -212,15 +198,9 @@ impl<TPostings: Postings, const SCORING_ENABLED: bool> DocSet
     }
 }
 
-impl<TPostings: Postings, const SCORING_ENABLED: bool> Scorer
-    for PhrasePrefixScorer<TPostings, SCORING_ENABLED>
-{
+impl<TPostings: Postings> Scorer for PhrasePrefixScorer<TPostings> {
     fn score(&mut self) -> Score {
-        if SCORING_ENABLED {
-            self.phrase_scorer.score()
-        } else {
-            1.0f32
-        }
         // TODO modify score??
+        self.phrase_scorer.score()
     }
 }

src/query/phrase_prefix_query/phrase_prefix_weight.rs

@@ -42,11 +42,11 @@ impl PhrasePrefixWeight {
         Ok(FieldNormReader::constant(reader.max_doc(), 1))
     }
 
-    pub(crate) fn phrase_prefix_scorer<const SCORING_ENABLED: bool>(
+    pub(crate) fn phrase_scorer(
         &self,
         reader: &SegmentReader,
         boost: Score,
-    ) -> crate::Result<Option<PhrasePrefixScorer<SegmentPostings, SCORING_ENABLED>>> {
+    ) -> crate::Result<Option<PhrasePrefixScorer<SegmentPostings>>> {
         let similarity_weight_opt = self
             .similarity_weight_opt
             .as_ref()
@@ -128,20 +128,15 @@ impl PhrasePrefixWeight {
 
 impl Weight for PhrasePrefixWeight {
     fn scorer(&self, reader: &SegmentReader, boost: Score) -> crate::Result<Box<dyn Scorer>> {
-        if self.similarity_weight_opt.is_some() {
-            if let Some(scorer) = self.phrase_prefix_scorer::<true>(reader, boost)? {
-                return Ok(Box::new(scorer));
-            }
+        if let Some(scorer) = self.phrase_scorer(reader, boost)? {
+            Ok(Box::new(scorer))
         } else {
-            if let Some(scorer) = self.phrase_prefix_scorer::<false>(reader, boost)? {
-                return Ok(Box::new(scorer));
-            }
+            Ok(Box::new(EmptyScorer))
         }
-        Ok(Box::new(EmptyScorer))
     }
 
     fn explain(&self, reader: &SegmentReader, doc: DocId) -> crate::Result<Explanation> {
-        let scorer_opt = self.phrase_prefix_scorer::<true>(reader, 1.0)?;
+        let scorer_opt = self.phrase_scorer(reader, 1.0)?;
         if scorer_opt.is_none() {
             return Err(does_not_match(doc));
         }
@@ -205,7 +200,7 @@ mod tests {
             .unwrap()
             .unwrap();
         let mut phrase_scorer = phrase_weight
-            .phrase_prefix_scorer::<true>(searcher.segment_reader(0u32), 1.0)?
+            .phrase_scorer(searcher.segment_reader(0u32), 1.0)?
             .unwrap();
         assert_eq!(phrase_scorer.doc(), 1);
         assert_eq!(phrase_scorer.phrase_count(), 2);
@@ -216,38 +211,6 @@ mod tests {
         Ok(())
     }
 
-    #[test]
-    pub fn test_phrase_no_count() -> crate::Result<()> {
-        let index = create_index(&[
-            "aa bb dd cc",
-            "aa aa bb c dd aa bb cc aa bb dc",
-            " aa bb cd",
-        ])?;
-        let schema = index.schema();
-        let text_field = schema.get_field("text").unwrap();
-        let searcher = index.reader()?.searcher();
-        let phrase_query = PhrasePrefixQuery::new(vec![
-            Term::from_field_text(text_field, "aa"),
-            Term::from_field_text(text_field, "bb"),
-            Term::from_field_text(text_field, "c"),
-        ]);
-        let enable_scoring = EnableScoring::enabled_from_searcher(&searcher);
-        let phrase_weight = phrase_query
-            .phrase_prefix_query_weight(enable_scoring)
-            .unwrap()
-            .unwrap();
-        let mut phrase_scorer = phrase_weight
-            .phrase_prefix_scorer::<false>(searcher.segment_reader(0u32), 1.0)?
-            .unwrap();
-        assert_eq!(phrase_scorer.doc(), 1);
-        assert_eq!(phrase_scorer.phrase_count(), 0);
-        assert_eq!(phrase_scorer.advance(), 2);
-        assert_eq!(phrase_scorer.doc(), 2);
-        assert_eq!(phrase_scorer.phrase_count(), 0);
-        assert_eq!(phrase_scorer.advance(), TERMINATED);
-        Ok(())
-    }
-
     #[test]
     pub fn test_phrase_count_mid() -> crate::Result<()> {
         let index = create_index(&["aa dd cc", "aa aa bb c dd aa bb cc aa dc", " aa bb cd"])?;
@@ -264,7 +227,7 @@ mod tests {
             .unwrap()
             .unwrap();
         let mut phrase_scorer = phrase_weight
-            .phrase_prefix_scorer::<true>(searcher.segment_reader(0u32), 1.0)?
+            .phrase_scorer(searcher.segment_reader(0u32), 1.0)?
             .unwrap();
         assert_eq!(phrase_scorer.doc(), 1);
         assert_eq!(phrase_scorer.phrase_count(), 2);

src/query/phrase_query/mod.rs

@@ -3,8 +3,8 @@ mod phrase_scorer;
 mod phrase_weight;
 
 pub use self::phrase_query::PhraseQuery;
+pub(crate) use self::phrase_scorer::intersection_count;
 pub use self::phrase_scorer::PhraseScorer;
-pub(crate) use self::phrase_scorer::{intersection_count, intersection_exists};
 pub use self::phrase_weight::PhraseWeight;
 
 #[cfg(test)]

src/query/phrase_query/phrase_scorer.rs

@@ -58,7 +58,7 @@ pub struct PhraseScorer<TPostings: Postings> {
 }
 
 /// Returns true if and only if the two sorted arrays contain a common element
-pub(crate) fn intersection_exists(left: &[u32], right: &[u32]) -> bool {
+fn intersection_exists(left: &[u32], right: &[u32]) -> bool {
     let mut left_index = 0;
     let mut right_index = 0;
     while left_index < left.len() && right_index < right.len() {

src/query/regex_query.rs

@@ -185,7 +185,7 @@ mod test {
             Err(crate::TantivyError::InvalidArgument(msg)) => {
                 assert!(msg.contains("error: unclosed group"))
             }
-            res => panic!("unexpected result: {res:?}"),
+            res => panic!("unexpected result: {:?}", res),
         }
     }
 }

src/schema/document/default_document.rs

@@ -157,24 +157,29 @@ impl CompactDoc {
     }
 
     /// field_values accessor
-    pub fn field_values(&self) -> impl Iterator<Item = (Field, CompactDocValue<'_>)> {
+    pub fn field_values(
+        &self,
+    ) -> impl Iterator<Item = (Field, ReferenceValue<'_, CompactDocValue<'_>>)> {
         self.field_values.iter().map(|field_val| {
             let field = Field::from_field_id(field_val.field as u32);
-            let val = self.get_compact_doc_value(field_val.value_addr);
+            let val = self.extract_value(field_val.value_addr).unwrap();
             (field, val)
         })
     }
 
     /// Returns all of the `ReferenceValue`s associated the given field
-    pub fn get_all(&self, field: Field) -> impl Iterator<Item = CompactDocValue<'_>> + '_ {
+    pub fn get_all(
+        &self,
+        field: Field,
+    ) -> impl Iterator<Item = ReferenceValue<'_, CompactDocValue<'_>>> + '_ {
         self.field_values
             .iter()
             .filter(move |field_value| Field::from_field_id(field_value.field as u32) == field)
-            .map(|val| self.get_compact_doc_value(val.value_addr))
+            .map(|val| self.extract_value(val.value_addr).unwrap())
     }
 
     /// Returns the first `ReferenceValue` associated the given field
-    pub fn get_first(&self, field: Field) -> Option<CompactDocValue<'_>> {
+    pub fn get_first(&self, field: Field) -> Option<ReferenceValue<'_, CompactDocValue<'_>>> {
         self.get_all(field).next()
     }
 
@@ -294,11 +299,58 @@ impl CompactDoc {
         }
     }
 
-    /// Get CompactDocValue for address
-    fn get_compact_doc_value(&self, value_addr: ValueAddr) -> CompactDocValue<'_> {
-        CompactDocValue {
-            container: self,
-            value_addr,
+    fn extract_value(
+        &self,
+        ref_value: ValueAddr,
+    ) -> io::Result<ReferenceValue<'_, CompactDocValue<'_>>> {
+        match ref_value.type_id {
+            ValueType::Null => Ok(ReferenceValueLeaf::Null.into()),
+            ValueType::Str => {
+                let str_ref = self.extract_str(ref_value.val_addr);
+                Ok(ReferenceValueLeaf::Str(str_ref).into())
+            }
+            ValueType::Facet => {
+                let str_ref = self.extract_str(ref_value.val_addr);
+                Ok(ReferenceValueLeaf::Facet(str_ref).into())
+            }
+            ValueType::Bytes => {
+                let data = self.extract_bytes(ref_value.val_addr);
+                Ok(ReferenceValueLeaf::Bytes(data).into())
+            }
+            ValueType::U64 => self
+                .read_from::<u64>(ref_value.val_addr)
+                .map(ReferenceValueLeaf::U64)
+                .map(Into::into),
+            ValueType::I64 => self
+                .read_from::<i64>(ref_value.val_addr)
+                .map(ReferenceValueLeaf::I64)
+                .map(Into::into),
+            ValueType::F64 => self
+                .read_from::<f64>(ref_value.val_addr)
+                .map(ReferenceValueLeaf::F64)
+                .map(Into::into),
+            ValueType::Bool => Ok(ReferenceValueLeaf::Bool(ref_value.val_addr != 0).into()),
+            ValueType::Date => self
+                .read_from::<i64>(ref_value.val_addr)
+                .map(|ts| ReferenceValueLeaf::Date(DateTime::from_timestamp_nanos(ts)))
+                .map(Into::into),
+            ValueType::IpAddr => self
+                .read_from::<u128>(ref_value.val_addr)
+                .map(|num| ReferenceValueLeaf::IpAddr(Ipv6Addr::from_u128(num)))
+                .map(Into::into),
+            ValueType::PreTokStr => self
+                .read_from::<PreTokenizedString>(ref_value.val_addr)
+                .map(Into::into)
+                .map(ReferenceValueLeaf::PreTokStr)
+                .map(Into::into),
+            ValueType::Object => Ok(ReferenceValue::Object(CompactDocObjectIter::new(
+                self,
+                ref_value.val_addr,
+            )?)),
+            ValueType::Array => Ok(ReferenceValue::Array(CompactDocArrayIter::new(
+                self,
+                ref_value.val_addr,
+            )?)),
         }
     }
 
@@ -358,7 +410,7 @@ impl PartialEq for CompactDoc {
         let convert_to_comparable_map = |doc: &CompactDoc| {
             let mut field_value_set: HashMap<Field, HashSet<String>> = Default::default();
             for field_value in doc.field_values.iter() {
-                let value: OwnedValue = doc.get_compact_doc_value(field_value.value_addr).into();
+                let value: OwnedValue = doc.extract_value(field_value.value_addr).unwrap().into();
                 let value = serde_json::to_string(&value).unwrap();
                 field_value_set
                     .entry(Field::from_field_id(field_value.field as u32))
@@ -392,19 +444,7 @@ impl DocumentDeserialize for CompactDoc {
 #[derive(Debug, Clone, Copy)]
 pub struct CompactDocValue<'a> {
     container: &'a CompactDoc,
-    value_addr: ValueAddr,
-}
-impl PartialEq for CompactDocValue<'_> {
-    fn eq(&self, other: &Self) -> bool {
-        let value1: OwnedValue = (*self).into();
-        let value2: OwnedValue = (*other).into();
-        value1 == value2
-    }
-}
-impl<'a> From<CompactDocValue<'a>> for OwnedValue {
-    fn from(value: CompactDocValue) -> Self {
-        value.as_value().into()
-    }
+    value: ValueAddr,
 }
 impl<'a> Value<'a> for CompactDocValue<'a> {
     type ArrayIter = CompactDocArrayIter<'a>;
@@ -412,67 +452,7 @@ impl<'a> Value<'a> for CompactDocValue<'a> {
     type ObjectIter = CompactDocObjectIter<'a>;
 
     fn as_value(&self) -> ReferenceValue<'a, Self> {
-        self.get_ref_value().unwrap()
-    }
-}
-impl<'a> CompactDocValue<'a> {
-    fn get_ref_value(&self) -> io::Result<ReferenceValue<'a, CompactDocValue<'a>>> {
-        let addr = self.value_addr.val_addr;
-        match self.value_addr.type_id {
-            ValueType::Null => Ok(ReferenceValueLeaf::Null.into()),
-            ValueType::Str => {
-                let str_ref = self.container.extract_str(addr);
-                Ok(ReferenceValueLeaf::Str(str_ref).into())
-            }
-            ValueType::Facet => {
-                let str_ref = self.container.extract_str(addr);
-                Ok(ReferenceValueLeaf::Facet(str_ref).into())
-            }
-            ValueType::Bytes => {
-                let data = self.container.extract_bytes(addr);
-                Ok(ReferenceValueLeaf::Bytes(data).into())
-            }
-            ValueType::U64 => self
-                .container
-                .read_from::<u64>(addr)
-                .map(ReferenceValueLeaf::U64)
-                .map(Into::into),
-            ValueType::I64 => self
-                .container
-                .read_from::<i64>(addr)
-                .map(ReferenceValueLeaf::I64)
-                .map(Into::into),
-            ValueType::F64 => self
-                .container
-                .read_from::<f64>(addr)
-                .map(ReferenceValueLeaf::F64)
-                .map(Into::into),
-            ValueType::Bool => Ok(ReferenceValueLeaf::Bool(addr != 0).into()),
-            ValueType::Date => self
-                .container
-                .read_from::<i64>(addr)
-                .map(|ts| ReferenceValueLeaf::Date(DateTime::from_timestamp_nanos(ts)))
-                .map(Into::into),
-            ValueType::IpAddr => self
-                .container
-                .read_from::<u128>(addr)
-                .map(|num| ReferenceValueLeaf::IpAddr(Ipv6Addr::from_u128(num)))
-                .map(Into::into),
-            ValueType::PreTokStr => self
-                .container
-                .read_from::<PreTokenizedString>(addr)
-                .map(Into::into)
-                .map(ReferenceValueLeaf::PreTokStr)
-                .map(Into::into),
-            ValueType::Object => Ok(ReferenceValue::Object(CompactDocObjectIter::new(
-                self.container,
-                addr,
-            )?)),
-            ValueType::Array => Ok(ReferenceValue::Array(CompactDocArrayIter::new(
-                self.container,
-                addr,
-            )?)),
-        }
+        self.container.extract_value(self.value).unwrap()
     }
 }
 
@@ -557,7 +537,7 @@ impl BinarySerializable for ValueType {
         } else {
             return Err(io::Error::new(
                 io::ErrorKind::InvalidData,
-                format!("Invalid value type id: {num}"),
+                format!("Invalid value type id: {}", num),
             ));
         };
         Ok(type_id)
@@ -621,9 +601,9 @@ impl<'a> Iterator for CompactDocObjectIter<'a> {
         let value = ValueAddr::deserialize(&mut self.node_addresses_slice).ok()?;
         let value = CompactDocValue {
             container: self.container,
-            value_addr: value,
+            value,
         };
-        Some((key, value))
+        return Some((key, value));
     }
 }
 
@@ -655,9 +635,9 @@ impl<'a> Iterator for CompactDocArrayIter<'a> {
         let value = ValueAddr::deserialize(&mut self.node_addresses_slice).ok()?;
         let value = CompactDocValue {
             container: self.container,
-            value_addr: value,
+            value,
         };
-        Some(value)
+        return Some(value);
     }
 }
 
@@ -688,7 +668,7 @@ impl<'a> Iterator for FieldValueIterRef<'a> {
                 Field::from_field_id(field_value.field as u32),
                 CompactDocValue::<'a> {
                     container: self.container,
-                    value_addr: field_value.value_addr,
+                    value: field_value.value_addr,
                 },
             )
         })

src/schema/document/se.rs

@@ -58,8 +58,9 @@ where W: Write
             return Err(io::Error::new(
                 io::ErrorKind::Other,
                 format!(
-                    "Unexpected number of entries written to serializer, expected \
-                     {num_field_values} entries, got {actual_length} entries",
+                    "Unexpected number of entries written to serializer, expected {} entries, got \
+                     {} entries",
+                    num_field_values, actual_length,
                 ),
             ));
         }

src/schema/field_type.rs

@@ -659,9 +659,9 @@ mod tests {
         let schema = schema_builder.build();
         let doc_json = r#"{"date": "2019-10-12T07:20:50.52+02:00"}"#;
         let doc = TantivyDocument::parse_json(&schema, doc_json).unwrap();
-        let date = OwnedValue::from(doc.get_first(date_field).unwrap());
+        let date = doc.get_first(date_field).unwrap();
         // Time zone is converted to UTC
-        assert_eq!("Date(2019-10-12T05:20:50.52Z)", format!("{date:?}"));
+        assert_eq!("Leaf(Date(2019-10-12T05:20:50.52Z))", format!("{date:?}"));
     }
 
     #[test]

src/store/mod.rs

@@ -60,7 +60,7 @@ pub mod tests {
     use crate::directory::{Directory, RamDirectory, WritePtr};
     use crate::fastfield::AliveBitSet;
     use crate::schema::{
-        self, Schema, TantivyDocument, TextFieldIndexing, TextOptions, Value, STORED, TEXT,
+        self, Schema, TantivyDocument, TextFieldIndexing, TextOptions, STORED, TEXT,
     };
     use crate::{Index, IndexWriter, Term};
 
@@ -122,7 +122,6 @@ pub mod tests {
                     .get::<TantivyDocument>(i)?
                     .get_first(field_title)
                     .unwrap()
-                    .as_value()
                     .as_str()
                     .unwrap(),
                 format!("Doc {i}")
@@ -134,7 +133,6 @@ pub mod tests {
             let title_content = doc
                 .get_first(field_title)
                 .unwrap()
-                .as_value()
                 .as_str()
                 .unwrap()
                 .to_string();

src/store/reader.rs

@@ -241,12 +241,23 @@ impl StoreReader {
         &'b self,
         alive_bitset: Option<&'a AliveBitSet>,
     ) -> impl Iterator<Item = crate::Result<D>> + 'b {
+        self.enumerate(alive_bitset)
+            .map(|res| res.map(|(_, doc)| doc))
+    }
+
+    /// A variant of [`iter`][Self::iter] which also yields document ID.
+    pub fn enumerate<'a: 'b, 'b, D: DocumentDeserialize>(
+        &'b self,
+        alive_bitset: Option<&'a AliveBitSet>,
+    ) -> impl Iterator<Item = crate::Result<(DocId, D)>> + 'b {
         self.iter_raw(alive_bitset).map(|doc_bytes_res| {
-            let mut doc_bytes = doc_bytes_res?;
+            let (doc_id, mut doc_bytes) = doc_bytes_res?;
 
             let deserializer = BinaryDocumentDeserializer::from_reader(&mut doc_bytes)
                 .map_err(crate::TantivyError::from)?;
-            D::deserialize(deserializer).map_err(crate::TantivyError::from)
+            let doc = D::deserialize(deserializer).map_err(crate::TantivyError::from)?;
+
+            Ok((doc_id, doc))
         })
     }
 
@@ -256,7 +267,7 @@ impl StoreReader {
     pub(crate) fn iter_raw<'a: 'b, 'b>(
         &'b self,
         alive_bitset: Option<&'a AliveBitSet>,
-    ) -> impl Iterator<Item = crate::Result<OwnedBytes>> + 'b {
+    ) -> impl Iterator<Item = crate::Result<(DocId, OwnedBytes)>> + 'b {
         let last_doc_id = self
             .block_checkpoints()
             .last()
@@ -284,14 +295,14 @@ impl StoreReader {
 
                 let alive = alive_bitset.map_or(true, |bitset| bitset.is_alive(doc_id));
                 let res = if alive {
-                    Some((curr_block.clone(), doc_pos))
+                    Some((doc_id, curr_block.clone(), doc_pos))
                 } else {
                     None
                 };
                 doc_pos += 1;
                 res
             })
-            .map(move |(block, doc_pos)| {
+            .map(move |(doc_id, block, doc_pos)| {
                 let block = block
                     .ok_or_else(|| {
                         DataCorruption::comment_only(
@@ -304,7 +315,7 @@ impl StoreReader {
                     })?;
 
                 let range = block_read_index(&block, doc_pos)?;
-                Ok(block.slice(range))
+                Ok((doc_id, block.slice(range)))
             })
     }
 
@@ -403,7 +414,7 @@ mod tests {
 
     use super::*;
     use crate::directory::RamDirectory;
-    use crate::schema::{Field, TantivyDocument, Value};
+    use crate::schema::{Field, TantivyDocument};
     use crate::store::tests::write_lorem_ipsum_store;
     use crate::store::Compressor;
     use crate::Directory;
@@ -411,7 +422,7 @@ mod tests {
     const BLOCK_SIZE: usize = 16_384;
 
     fn get_text_field<'a>(doc: &'a TantivyDocument, field: &'a Field) -> Option<&'a str> {
-        doc.get_first(*field).and_then(|f| f.as_value().as_str())
+        doc.get_first(*field).and_then(|f| f.as_str())
     }
 
     #[test]

src/termdict/fst_termdict/termdict.rs

@@ -93,7 +93,7 @@ fn open_fst_index(fst_file: FileSlice) -> io::Result<tantivy_fst::Map<OwnedBytes
     let fst = Fst::new(bytes).map_err(|err| {
         io::Error::new(
             io::ErrorKind::InvalidData,
-            format!("Fst data is corrupted: {err:?}"),
+            format!("Fst data is corrupted: {:?}", err),
         )
     })?;
     Ok(tantivy_fst::Map::from(fst))

src/termdict/tests.rs

@@ -95,7 +95,7 @@ fn test_term_dictionary_simple() -> crate::Result<()> {
 #[test]
 fn test_term_dictionary_stream() -> crate::Result<()> {
     let ids: Vec<_> = (0u32..10_000u32)
-        .map(|i| (format!("doc{i:0>6}"), i))
+        .map(|i| (format!("doc{:0>6}", i), i))
         .collect();
     let buffer: Vec<u8> = {
         let mut term_dictionary_builder = TermDictionaryBuilder::create(vec![]).unwrap();
@@ -156,7 +156,7 @@ fn test_stream_high_range_prefix_suffix() -> crate::Result<()> {
 #[test]
 fn test_stream_range() -> crate::Result<()> {
     let ids: Vec<_> = (0u32..10_000u32)
-        .map(|i| (format!("doc{i:0>6}"), i))
+        .map(|i| (format!("doc{:0>6}", i), i))
         .collect();
     let buffer: Vec<u8> = {
         let mut term_dictionary_builder = TermDictionaryBuilder::create(vec![]).unwrap();

src/tokenizer/facet_tokenizer.rs

@@ -96,7 +96,7 @@ mod tests {
         {
             let mut add_token = |token: &Token| {
                 let facet = Facet::from_encoded(token.text.as_bytes().to_owned()).unwrap();
-                tokens.push(format!("{facet}"));
+                tokens.push(format!("{}", facet));
             };
             FacetTokenizer::default()
                 .token_stream(facet.encoded_str())
@@ -116,7 +116,7 @@ mod tests {
         {
             let mut add_token = |token: &Token| {
                 let facet = Facet::from_encoded(token.text.as_bytes().to_owned()).unwrap(); // ok test
-                tokens.push(format!("{facet}"));
+                tokens.push(format!("{}", facet));
             };
             FacetTokenizer::default()
                 .token_stream(facet.encoded_str()) // ok test