Trait OptimizationPass 

pub trait OptimizationPass: Send + Sync {
    // Required methods
    fn name(&self) -> &str;
    fn apply(&self, query: QueryExpr) -> QueryExpr;
    fn benefit(&self) -> u32;
}

An optimization pass that transforms query expressions

Required Methods

fn name(&self) -> &str

Pass name for debugging

fn apply(&self, query: QueryExpr) -> QueryExpr

Apply the optimization pass

fn benefit(&self) -> u32

Estimated benefit (higher = more important)

Implementors