Struct FactorizedSelection 

pub struct FactorizedSelection { /* private fields */ }

Hierarchical selection for factorized data.

Tracks selections at each factorization level, enabling filtering without flattening or copying data.

Implementations

impl FactorizedSelection

pub fn all(level_counts: &[usize]) -> Self

Creates a selection that selects all values at all levels.

pub fn new(level_selections: Vec<LevelSelection>) -> Self

Creates a selection from level selections.

pub fn level_count(&self) -> usize

Returns the number of levels.

pub fn level(&self, level: usize) -> Option<&LevelSelection>

Gets the selection for a specific level.

pub fn filter_level<F>(&self, level: usize, predicate: F) -> Self

where F: Fn(usize) -> bool,

Filters at a specific level using a predicate.

Returns a new selection with the filter applied. This is O(n_physical) where n is the physical size of that level, not O(n_logical) where n is the logical row count.

pub fn is_selected(&self, level: usize, physical_idx: usize) -> bool

Checks if a physical index at a level is selected.

pub fn selected_count(&mut self, multiplicities: &[Vec<usize>]) -> usize

Computes and caches the selected logical row count.

The computation considers parent-child relationships: a child is only counted if its parent is selected.

pub fn invalidate_cache(&mut self)

Invalidates the cached selected count.

Trait Implementations

impl Clone for FactorizedSelection

fn clone(&self) -> FactorizedSelection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FactorizedSelection

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

Formats the value using the given formatter.