Rename DatePrecision to DateTimePrecision (#2051)

Makefile

@@ -1,5 +1,5 @@
 test:
-	echo "Run test only... No examples."
+	@echo "Run test only... No examples."
 	cargo test --tests --lib
 
 fmt:

common/src/datetime.rs

@@ -1,26 +1,41 @@
+#![allow(deprecated)]
+
 use std::fmt;
 
 use serde::{Deserialize, Serialize};
 use time::format_description::well_known::Rfc3339;
 use time::{OffsetDateTime, PrimitiveDateTime, UtcOffset};
 
-/// DateTime Precision
+/// Precision with which datetimes are truncated when stored in fast fields. This setting is only
+/// relevant for fast fields. In the docstore, datetimes are always saved with nanosecond precision.
 #[derive(
     Clone, Copy, Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize, Default,
 )]
 #[serde(rename_all = "lowercase")]
-pub enum DatePrecision {
-    /// Seconds precision
+pub enum DateTimePrecision {
+    /// Second precision.
     #[default]
+    Second,
+    /// Millisecond precision.
+    Millisecond,
+    /// Microsecond precision.
+    Microsecond,
+    /// Nanosecond precision.
+    Nanosecond,
+    // TODO: Remove deprecated variants after 2 releases.
+    #[deprecated(since = "0.20.0", note = "Use `Second` instead")]
     Seconds,
-    /// Milli-seconds precision.
+    #[deprecated(since = "0.20.0", note = "Use `Millisecond` instead")]
     Milliseconds,
-    /// Micro-seconds precision.
+    #[deprecated(since = "0.20.0", note = "Use `Microsecond` instead")]
     Microseconds,
-    /// Nano-seconds precision.
+    #[deprecated(since = "0.20.0", note = "Use `Nanosecond` instead")]
     Nanoseconds,
 }
 
+#[deprecated(since = "0.20.0", note = "Use `DateTimePrecision` instead")]
+pub type DatePrecision = DateTimePrecision;
+
 /// A date/time value with nanoseconds precision.
 ///
 /// This timestamp does not carry any explicit time zone information.
@@ -139,12 +154,18 @@ impl DateTime {
     }
 
     /// Truncates the microseconds value to the corresponding precision.
-    pub fn truncate(self, precision: DatePrecision) -> Self {
+    pub fn truncate(self, precision: DateTimePrecision) -> Self {
         let truncated_timestamp_micros = match precision {
-            DatePrecision::Seconds => (self.timestamp_nanos / 1_000_000_000) * 1_000_000_000,
-            DatePrecision::Milliseconds => (self.timestamp_nanos / 1_000_000) * 1_000_000,
-            DatePrecision::Microseconds => (self.timestamp_nanos / 1_000) * 1_000,
-            DatePrecision::Nanoseconds => self.timestamp_nanos,
+            DateTimePrecision::Second | DateTimePrecision::Seconds => {
+                (self.timestamp_nanos / 1_000_000_000) * 1_000_000_000
+            }
+            DateTimePrecision::Millisecond | DateTimePrecision::Milliseconds => {
+                (self.timestamp_nanos / 1_000_000) * 1_000_000
+            }
+            DateTimePrecision::Microsecond | DateTimePrecision::Microseconds => {
+                (self.timestamp_nanos / 1_000) * 1_000
+            }
+            DateTimePrecision::Nanosecond | DateTimePrecision::Nanoseconds => self.timestamp_nanos,
         };
         Self {
             timestamp_nanos: truncated_timestamp_micros,

common/src/lib.rs

@@ -14,7 +14,9 @@ mod vint;
 mod writer;
 pub use bitset::*;
 pub use byte_count::ByteCount;
-pub use datetime::{DatePrecision, DateTime};
+#[allow(deprecated)]
+pub use datetime::DatePrecision;
+pub use datetime::{DateTime, DateTimePrecision};
 pub use group_by::GroupByIteratorExtended;
 pub use ownedbytes::{OwnedBytes, StableDeref};
 pub use serialize::{BinarySerializable, DeserializeFrom, FixedSize};

examples/date_time_field.rs

@@ -13,7 +13,7 @@ fn main() -> tantivy::Result<()> {
     let opts = DateOptions::from(INDEXED)
         .set_stored()
         .set_fast()
-        .set_precision(tantivy::DatePrecision::Seconds);
+        .set_precision(tantivy::DateTimePrecision::Second);
     // Add `occurred_at` date field type
     let occurred_at = schema_builder.add_date_field("occurred_at", opts);
     let event_type = schema_builder.add_text_field("event", STRING | STORED);

src/fastfield/mod.rs

@@ -95,7 +95,7 @@ mod tests {
     };
     use crate::time::OffsetDateTime;
     use crate::tokenizer::{LowerCaser, RawTokenizer, TextAnalyzer, TokenizerManager};
-    use crate::{DateOptions, DatePrecision, Index, SegmentId, SegmentReader};
+    use crate::{DateOptions, DateTimePrecision, Index, SegmentId, SegmentReader};
 
     pub static SCHEMA: Lazy<Schema> = Lazy::new(|| {
         let mut schema_builder = Schema::builder();
@@ -686,12 +686,12 @@ mod tests {
         let mut schema_builder = Schema::builder();
         let date_field = schema_builder.add_date_field(
             "date",
-            DateOptions::from(FAST).set_precision(DatePrecision::Nanoseconds),
+            DateOptions::from(FAST).set_precision(DateTimePrecision::Nanosecond),
         );
         let multi_date_field = schema_builder.add_date_field(
             "multi_date",
             DateOptions::default()
-                .set_precision(DatePrecision::Nanoseconds)
+                .set_precision(DateTimePrecision::Nanosecond)
                 .set_fast(),
         );
         let schema = schema_builder.build();
@@ -862,9 +862,9 @@ mod tests {
 
     #[test]
     pub fn test_gcd_date() {
-        let size_prec_sec = test_gcd_date_with_codec(DatePrecision::Seconds);
+        let size_prec_sec = test_gcd_date_with_codec(DateTimePrecision::Second);
         assert!((1000 * 13 / 8..100 + 1000 * 13 / 8).contains(&size_prec_sec.get_bytes())); // 13 bits per val = ceil(log_2(number of seconds in 2hours);
-        let size_prec_micros = test_gcd_date_with_codec(DatePrecision::Microseconds);
+        let size_prec_micros = test_gcd_date_with_codec(DateTimePrecision::Microsecond);
         assert!((1000 * 33 / 8..100 + 1000 * 33 / 8).contains(&size_prec_micros.get_bytes()));
         // 33 bits per
         // val = ceil(log_2(number
@@ -872,7 +872,7 @@ mod tests {
         // in 2hours);
     }
 
-    fn test_gcd_date_with_codec(precision: DatePrecision) -> ByteCount {
+    fn test_gcd_date_with_codec(precision: DateTimePrecision) -> ByteCount {
         let mut rng = StdRng::seed_from_u64(2u64);
         const T0: i64 = 1_662_345_825_012_529i64;
         const ONE_HOUR_IN_MICROSECS: i64 = 3_600 * 1_000_000;

src/fastfield/writer.rs

@@ -8,7 +8,7 @@ use crate::indexer::doc_id_mapping::DocIdMapping;
 use crate::schema::term::{JSON_PATH_SEGMENT_SEP, JSON_PATH_SEGMENT_SEP_STR};
 use crate::schema::{value_type_to_column_type, Document, FieldType, Schema, Type, Value};
 use crate::tokenizer::{TextAnalyzer, TokenizerManager};
-use crate::{DatePrecision, DocId, TantivyError};
+use crate::{DateTimePrecision, DocId, TantivyError};
 
 /// Only index JSON down to a depth of 20.
 /// This is mostly to guard us from a stack overflow triggered by malicious input.
@@ -19,7 +19,7 @@ pub struct FastFieldsWriter {
     columnar_writer: ColumnarWriter,
     fast_field_names: Vec<Option<String>>, //< TODO see if we can hash the field name hash too.
     per_field_tokenizer: Vec<Option<TextAnalyzer>>,
-    date_precisions: Vec<DatePrecision>,
+    date_precisions: Vec<DateTimePrecision>,
     expand_dots: Vec<bool>,
     num_docs: DocId,
     // Buffer that we recycle to avoid allocation.
@@ -41,8 +41,8 @@ impl FastFieldsWriter {
         let mut columnar_writer = ColumnarWriter::default();
 
         let mut fast_field_names: Vec<Option<String>> = vec![None; schema.num_fields()];
-        let mut date_precisions: Vec<DatePrecision> =
-            std::iter::repeat_with(DatePrecision::default)
+        let mut date_precisions: Vec<DateTimePrecision> =
+            std::iter::repeat_with(DateTimePrecision::default)
                 .take(schema.num_fields())
                 .collect();
         let mut expand_dots = vec![false; schema.num_fields()];

src/lib.rs

@@ -184,7 +184,9 @@ pub use crate::directory::Directory;
 pub use crate::indexer::operation::UserOperation;
 pub use crate::indexer::{merge_filtered_segments, merge_indices, IndexWriter, PreparedCommit};
 pub use crate::postings::Postings;
-pub use crate::schema::{DateOptions, DatePrecision, Document, Term};
+#[allow(deprecated)]
+pub use crate::schema::DatePrecision;
+pub use crate::schema::{DateOptions, DateTimePrecision, Document, Term};
 
 /// Index format version.
 const INDEX_FORMAT_VERSION: u32 = 5;

src/schema/date_time_options.rs

@@ -1,12 +1,14 @@
 use std::ops::BitOr;
 
+#[allow(deprecated)]
 pub use common::DatePrecision;
+pub use common::DateTimePrecision;
 use serde::{Deserialize, Serialize};
 
 use crate::schema::flags::{FastFlag, IndexedFlag, SchemaFlagList, StoredFlag};
 
 /// The precision of the indexed date/time values in the inverted index.
-pub const DATE_TIME_PRECISION_INDEXED: DatePrecision = DatePrecision::Seconds;
+pub const DATE_TIME_PRECISION_INDEXED: DateTimePrecision = DateTimePrecision::Second;
 
 /// Defines how DateTime field should be handled by tantivy.
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, Default)]
@@ -20,7 +22,7 @@ pub struct DateOptions {
     // Internal storage precision, used to optimize storage
     // compression on fast fields.
     #[serde(default)]
-    precision: DatePrecision,
+    precision: DateTimePrecision,
 }
 
 impl DateOptions {
@@ -93,7 +95,7 @@ impl DateOptions {
     ///
     /// Internal storage precision, used to optimize storage
     /// compression on fast fields.
-    pub fn set_precision(mut self, precision: DatePrecision) -> DateOptions {
+    pub fn set_precision(mut self, precision: DateTimePrecision) -> DateOptions {
         self.precision = precision;
         self
     }
@@ -102,7 +104,7 @@ impl DateOptions {
     ///
     /// Internal storage precision, used to optimize storage
     /// compression on fast fields.
-    pub fn get_precision(&self) -> DatePrecision {
+    pub fn get_precision(&self) -> DateTimePrecision {
         self.precision
     }
 }

src/schema/mod.rs

@@ -129,7 +129,9 @@ mod value;
 use columnar::ColumnType;
 
 pub use self::bytes_options::BytesOptions;
-pub use self::date_time_options::{DateOptions, DatePrecision, DATE_TIME_PRECISION_INDEXED};
+#[allow(deprecated)]
+pub use self::date_time_options::DatePrecision;
+pub use self::date_time_options::{DateOptions, DateTimePrecision, DATE_TIME_PRECISION_INDEXED};
 pub use self::document::Document;
 pub(crate) use self::facet::FACET_SEP_BYTE;
 pub use self::facet::{Facet, FacetParseError};

src/schema/schema.rs

@@ -973,7 +973,7 @@ mod tests {
       "fieldnorms": true,
       "fast": true,
       "stored": true,
-      "precision": "seconds"
+      "precision": "second"
     }
   },
   {