Struct Optimizer 

pub struct Optimizer;

Implementations

impl Optimizer

pub fn new() -> Self

pub fn optimize(&mut self, plan: LogicalPlan, stats: &GraphStats) -> LogicalPlan

Run the rewrite pipeline. stats drives cost-based selection when multiple index rewrites match the same Filter(NodeScan); pass GraphStats::default() to disable scoring (every rewrite commits unconditionally, the pre-cost-model behaviour).

pub fn lower_to_physical(&mut self, logical: LogicalPlan) -> PhysicalPlan

Lower a logical plan by consuming it — each op’s owned payload (expressions, patterns, items) is moved into the physical op rather than cloned. Callers should not need the logical plan after this.

Trait Implementations

impl Default for Optimizer

fn default() -> Self

Returns the “default value” for a type.