Enum DictionaryHandling 

pub enum DictionaryHandling {
    Resend,
    Delta,
}

Controls how dictionaries are handled in Arrow IPC messages

Variants

Resend

Send the entire dictionary every time it is encountered (default)

Delta

Send only new dictionary values since the last batch (delta encoding)

When a dictionary is first encountered, the entire dictionary is sent. For subsequent batches, only values that are new (not previously sent) are transmitted with the isDelta flag set to true.

Trait Implementations

impl Clone for DictionaryHandling

fn clone(&self) -> DictionaryHandling

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DictionaryHandling

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

Formats the value using the given formatter.

impl Default for DictionaryHandling

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for DictionaryHandling

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

impl Eq for DictionaryHandling

impl StructuralPartialEq for DictionaryHandling