Struct RowGroupSelection 

pub struct RowGroupSelection {
    pub(crate) row_group_index: usize,
    pub(crate) selection: Option<RowSelection>,
}

A row group and its optional row-group-local RowSelection.

A row-group-local selection is relative to the rows in this row group. For example, an offset of 100 refers to the row at offset 100 within the row group, not within the Parquet file.

A None selection reads the entire row group. Omitting a row group skips it. Entries are decoded in the supplied order.

Fields

row_group_index: usize

selection: Option<RowSelection>

Implementations

impl RowGroupSelection

pub fn new(row_group_index: usize, selection: Option<RowSelection>) -> Self

Creates a row-group-local selection.

pub fn row_group_index(&self) -> usize

The index of the row group this selection applies to.

pub fn selection(&self) -> Option<&RowSelection>

The row-group-local selection, or None if the entire row group is read.

Trait Implementations

impl Clone for RowGroupSelection

fn clone(&self) -> RowGroupSelection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowGroupSelection

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

Formats the value using the given formatter.

impl Eq for RowGroupSelection

impl PartialEq for RowGroupSelection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RowGroupSelection