Struct SecondaryEngineOptimizerRequest 

#[non_exhaustive]
pub struct SecondaryEngineOptimizerRequest { /* private fields */ }

The pair the secondary engine returns from Handlerton::secondary_engine_check_optimizer_request.

Mirrors struct SecondaryEngineGraphSimplificationRequestParameters in mysql-server/sql/handler.h. Fields are crate-private and the type is #[non_exhaustive] so a future MySQL field can land without a SemVer-breaking change; engine code constructs values via Self::new or Self::keep_going and reads them via Self::request / Self::subgraph_pair_limit.

Implementations

impl SecondaryEngineOptimizerRequest

pub const fn new( request: SecondaryEngineGraphSimplificationRequest, subgraph_pair_limit: i32, ) -> Self

Construct a request from its two parts.

pub const fn keep_going() -> Self

“Keep going” default — what the trait returns when the engine has no opinion. Matches the upstream documented default (kContinue, 0).

pub const fn request(&self) -> SecondaryEngineGraphSimplificationRequest

The transition the engine asks the optimizer to make.

pub const fn subgraph_pair_limit(&self) -> i32

Subgraph-pair limit for the (possibly) restarted hypergraph.

Trait Implementations

impl Clone for SecondaryEngineOptimizerRequest

fn clone(&self) -> SecondaryEngineOptimizerRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SecondaryEngineOptimizerRequest

impl Debug for SecondaryEngineOptimizerRequest

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

Formats the value using the given formatter.

impl Eq for SecondaryEngineOptimizerRequest

impl PartialEq for SecondaryEngineOptimizerRequest

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