Struct ColumnIndex 

pub struct ColumnIndex {
    pub(crate) null_pages: Vec<bool>,
    pub(crate) boundary_order: BoundaryOrder,
    pub(crate) null_counts: Option<Vec<i64>>,
    pub(crate) repetition_level_histograms: Option<Vec<i64>>,
    pub(crate) definition_level_histograms: Option<Vec<i64>>,
}

Common bits of the column index

Fields

null_pages: Vec<bool>

boundary_order: BoundaryOrder

null_counts: Option<Vec<i64>>

repetition_level_histograms: Option<Vec<i64>>

definition_level_histograms: Option<Vec<i64>>

Implementations

impl ColumnIndex

pub fn num_pages(&self) -> u64

Returns the number of pages

pub fn null_count(&self, idx: usize) -> Option<i64>

Returns the number of null values in the page indexed by idx

Returns None if no null counts have been set in the index

pub fn repetition_level_histogram(&self, idx: usize) -> Option<&[i64]>

Returns the repetition level histogram for the page indexed by idx

pub fn definition_level_histogram(&self, idx: usize) -> Option<&[i64]>

Returns the definition level histogram for the page indexed by idx

pub fn is_null_page(&self, idx: usize) -> bool

Returns whether the page indexed by idx consists of all null values

Trait Implementations

impl Clone for ColumnIndex

fn clone(&self) -> ColumnIndex

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnIndex

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

Formats the value using the given formatter.

impl HeapSize for ColumnIndex

fn heap_size(&self) -> usize

Return the size of any bytes allocated on the heap by this object, including heap memory in those structures

impl PartialEq for ColumnIndex

fn eq(&self, other: &ColumnIndex) -> 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 ColumnIndex