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.

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

RowRowColPagedState

The chain-wide state of RowRowColPagedBuilder: the statistics its key and value codecs are built from, and the container sizes the chain implies.

Statics

DICTIONARY_COMPRESSION

Enable per-column dictionary compression in row containers.

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.

FundedValRowSpine

A ValRowSpine whose optional exertion is funded by its input.

RowBatcher

RowBuilder

RowRowBatcher

RowRowBuilder

RowRowColPagedBuilder

RowRowBuilder variant that consumes ColumnBody chunks. Pairs with any batcher whose chains are bodies, spillable (AccountedChunkBatcher behind an UnchunkBuilder) or resident (Col2ValColBatcher) alike, so the Paged in the name records where it started rather than a restriction. Installs a dictionary codec at seal time, gathering statistics from the sealed chain, so columnar arrangements compress on the same footing as the columnation-fed RowRowBuilder.

RowRowSpine

RowSpine

Key-only Row spine. DC is the diff container, see RowLayout.

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