Crate mz_row_spine 

Types and traits in support of containers for row-encoded byte slices.

This includes the vanilla bytes_container that holds byte slices in contiguous allocations, as well as a dictionary encoding wrapper that is able to rewrite the byte slices to use spare tags in each column to reference common values.

Modules

arc_batch 🔒

An Arc-backed batch newtype whose contents can be shared across timely runtimes.

bytes_container 🔒

A [u8]-specialized container.

dictionary 🔒

A Row-specialized container using dictionary compression.

offset_opt 🔒

row_codec 🔒

Traits abstracting the processes of encoding and decoding row-encoded byte sequences.

spines 🔒

Spines specialized to contain Row types in keys and values.

Structs

ArcBatch

An Arc-backed batch, shareable across threads when B’s contents are Send + Sync.

ArcBuilder

Builds ArcBatches, delegating to the inner batch’s builder.

DatumContainer

DatumSeq

A reference that can be resolved to a sequence of Datums.

OffsetOptimized

Statics

DICTIONARY_COMPRESSION

Enable per-column dictionary compression in row containers.

Functions

offset_list_size 🔒

Helper to compute the size of an OffsetList in memory.

Type Aliases

ArcOrdKeyBuilder

Builder pairing with ArcOrdKeySpine.

ArcOrdKeySpine

Generic Arc-backed key-only spine. See ArcOrdValSpine.

ArcOrdValBuilder

Builder pairing with ArcOrdValSpine.

ArcOrdValSpine

A generic Arc-backed key/value spine, for callers outside mz_compute that need an arrangement over non-Row-specialized types. The Arc handle rides on the local ArcBatch newtype, so no differential-side Arc batch impls are required.

RowBatcher

RowBuilder

RowRowBatcher

RowRowBuilder

RowRowColPagedBuilder

RowRowBuilder variant that consumes Column chunks. Pairs with Col2ValPagedBatcher for the spillable arrange path. Installs a dictionary codec at seal time, gathering statistics from the sealed Column chain, so paged arrangements compress on the same footing as the columnation-fed RowRowBuilder.

RowRowSpine

RowSpine

RowValBatcher

RowValBuilder

RowValSpine

ValRowBatcher

ValRowBuilder

ValRowColPagedBuilder

ValRowBuilder variant that consumes Column chunks. Pairs with Col2ValPagedBatcher<K, Row, T, R> for the spillable arrange path where keys are arbitrary Columnar values (e.g. UpsertKey) and values are packed Row bytes. Installs a dictionary codec on the value container at seal time, gathering statistics from the sealed Column chain; keys are not Row-shaped and so are left uncompressed.

ValRowSpine