Struct RowDatasetVersionSequence 

pub struct RowDatasetVersionSequence {
    pub runs: Vec<RowDatasetVersionRun>,
}

Sequence of dataset versions

Stores version runs aligned to the positional order of RowIdSequence. Provides sequential iterators and optional lightweight indexing for efficient random access.

Fields

runs: Vec<RowDatasetVersionRun>

Implementations

impl RowDatasetVersionSequence

pub fn new() -> Self

Create a new empty version sequence

pub fn from_uniform_row_count(row_count: u64, version: u64) -> Self

Create a version sequence with a single uniform run of row_count rows.

pub fn len(&self) -> u64

Number of rows tracked by this sequence (sum of run lengths).

pub fn is_empty(&self) -> bool

Empty if there are no runs or all runs are empty.

pub fn versions(&self) -> VersionsIter<'_>

Returns a forward iterator over versions, expanding runs lazily.

pub fn version_at(&self, index: usize) -> Option<u64>

Random access: get the version at global row position index.

pub fn get_version_for_row_id( &self, row_ids: &RowIdSequence, row_id: u64, ) -> Option<u64>

Get the version associated with a specific row id. This reconstructs the positional offset from RowIdSequence and then performs version_at lookup.

pub fn rows_with_version_greater_than( &self, row_ids: &RowIdSequence, threshold: u64, ) -> Vec<u64>

Convenience: collect row IDs with version strictly greater than threshold.

pub fn mask(&mut self, positions: impl IntoIterator<Item = u32>) -> Result<()>

Delete rows by positional offsets (e.g., from a deletion vector)

Trait Implementations

impl Clone for RowDatasetVersionSequence

fn clone(&self) -> RowDatasetVersionSequence

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RowDatasetVersionSequence

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

Formats the value using the given formatter.

impl DeepSizeOf for RowDatasetVersionSequence

fn deep_size_of_children(&self, __context: &mut Context) -> usize

fn deep_size_of(&self) -> usize

impl Default for RowDatasetVersionSequence

fn default() -> RowDatasetVersionSequence

Returns the “default value” for a type.

impl Eq for RowDatasetVersionSequence

impl PartialEq for RowDatasetVersionSequence

fn eq(&self, other: &RowDatasetVersionSequence) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for RowDatasetVersionSequence