Struct Optimizer

pub struct Optimizer {
    pub rules: Vec<Arc<dyn OptimizerRule + Send + Sync>>,
}

A rule-based optimizer.

Fields

rules: Vec<Arc<dyn OptimizerRule + Send + Sync>>

All optimizer rules to apply

Implementations

impl Optimizer

pub fn new() -> Self

Create a new optimizer using the recommended list of rules

pub fn with_rules(rules: Vec<Arc<dyn OptimizerRule + Send + Sync>>) -> Self

Create a new optimizer with the given rules

impl Optimizer

pub fn optimize<F>( &self, plan: LogicalPlan, config: &dyn OptimizerConfig, observer: F, ) -> Result<LogicalPlan>

where F: FnMut(&LogicalPlan, &dyn OptimizerRule),

Optimizes the logical plan by applying optimizer rules, and invoking observer function after each call

Trait Implementations

impl Clone for Optimizer

fn clone(&self) -> Optimizer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Optimizer

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

Formats the value using the given formatter.

impl Default for Optimizer

fn default() -> Self

Returns the “default value” for a type.