Struct KeyValues

pub struct KeyValues {
    pub mutation: Mutation,
    helper: SparseReadRowHelper,
    primary_key_encoding: PrimaryKeyEncoding,
}

Key value view of a mutation.

Fields

mutation: Mutation

Mutation to read.

This mutation must be a valid mutation and rows in the mutation must not be None.

helper: SparseReadRowHelper

Key value read helper.

primary_key_encoding: PrimaryKeyEncoding

Primary key encoding hint.

Implementations

impl KeyValues

pub fn new(metadata: &RegionMetadata, mutation: Mutation) -> Option<KeyValues>

Creates KeyValues from specific mutation.

Returns None if rows of the mutation is None.

pub fn iter(&self) -> impl Iterator<Item = KeyValue<'_>>

Returns a key value iterator.

pub fn num_rows(&self) -> usize

Returns number of rows.

pub fn is_empty(&self) -> bool

Returns if this container is empty

pub fn max_sequence(&self) -> SequenceNumber

Return the max sequence in this container.

When the mutation has no rows, the sequence is the same as the mutation sequence.

Trait Implementations

impl Debug for KeyValues

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.