Enum ColumnOrder

pub enum ColumnOrder {
    TYPE_DEFINED_ORDER(SortOrder),
    UNDEFINED,
}

Column order that specifies what method was used to aggregate min/max values for statistics.

If column order is undefined, then it is the legacy behaviour and all values should be compared as signed values/bytes.

Variants

TYPE_DEFINED_ORDER(SortOrder)

Column uses the order defined by its logical or physical type (if there is no logical type), parquet-format 2.4.0+.

UNDEFINED

Undefined column order, means legacy behaviour before parquet-format 2.4.0. Sort order is always SIGNED.

Implementations

impl ColumnOrder

pub fn get_sort_order( logical_type: Option<LogicalType>, converted_type: ConvertedType, physical_type: Type, ) -> SortOrder

Returns sort order for a physical/logical type.

fn get_converted_sort_order( converted_type: ConvertedType, physical_type: Type, ) -> SortOrder

fn get_default_sort_order(physical_type: Type) -> SortOrder

Returns default sort order based on physical type.

pub fn sort_order(&self) -> SortOrder

Returns sort order associated with this column order.

Trait Implementations

impl Clone for ColumnOrder

fn clone(&self) -> ColumnOrder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnOrder

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

Formats the value using the given formatter.

impl Display for ColumnOrder

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

Formats the value using the given formatter.

impl HeapSize for ColumnOrder

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 ColumnOrder

fn eq(&self, other: &ColumnOrder) -> 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 Copy for ColumnOrder

impl Eq for ColumnOrder

impl StructuralPartialEq for ColumnOrder