Enum BatchHint 

#[non_exhaustive]
pub enum BatchHint {
    Small,
    Medium,
    Large,
}

Preferred batch size for predicate evaluation.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Small

Small batches; row-at-a-time is acceptable.

Medium

Medium batches; the default.

Large

Large batches; the host should accumulate many rows before invoking (neural predicates benefit dramatically).

Trait Implementations

impl Clone for BatchHint

fn clone(&self) -> BatchHint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BatchHint

impl Debug for BatchHint

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

Formats the value using the given formatter.

impl Default for BatchHint

fn default() -> BatchHint

Returns the “default value” for a type.

impl Eq for BatchHint

impl PartialEq for BatchHint

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