Crate tantivy_columnar

Tantivy-Columnar

tantivy-columnarprovides a columnar storage for tantivy. The crate allows for efficient read operations on specific columns rather than entire records.

Overview

• columnar: Reading, writing, and merging multiple columns:

  • ColumnarWriter: Makes it possible to create a new columnar.
  • ColumnarReader: The ColumnarReader makes it possible to access a set of columns associated to field names.
  • merge_columnar: Contains the functionalities to merge multiple ColumnarReader or segments into a single one.

• column: A single column, which contains

  • column_index: Resolves the rows for a document id. Manages the cardinality of the column.
  • column_values: Stores the values of a column in a dense format.

Re-exports

pub use column_index::ColumnIndex;

pub use column_values::ColumnValues;

pub use column_values::EmptyColumnValues;

pub use column_values::MonotonicallyMappableToU128;

pub use column_values::MonotonicallyMappableToU64;

Modules

column_index

column_index

column_values

fastfield_codecs

Structs

BytesColumn

Dictionary encoded column.

Column

ColumnBlockAccessor

ColumnarReader

The ColumnarReader makes it possible to access a set of columns associated to field names.

ColumnarWriter

Makes it possible to create a new columnar.

DateTime

A date/time value with nanoseconds precision.

Dictionary

An SSTable is a sorted map that associates sorted &[u8] keys to any kind of typed values.

DynamicColumnHandle

InvalidData

RowAddr

ShuffleMergeOrder

StackMergeOrder

StrColumn

Enums

Cardinality

Enum describing the number of values that can exist per document (or per row if you will).

ColumnType

The column type represents the column type. Any changes need to be propagated to COLUMN_TYPES.

DynamicColumn

MergeRowOrder

NumericalType

NumericalValue

Traits

HasAssociatedColumnType

Functions

merge_columnar

Merge several columnar table together.

Type Aliases

DocId

RowId

Streamer