Optimizer(const Catalog& catalog, FunctionRegistry<D>& functions)

: catalog_(catalog), functions_(functions) {}

PlanNode* optimize(PlanNode* plan, sql_parser::Arena& arena) {

if (!plan) return nullptr;

plan = rules::predicate_pushdown(plan, catalog_, arena);

plan = rules::constant_folding<D>(plan, catalog_, functions_, arena);

plan = rules::limit_pushdown(plan, catalog_, arena);

return plan;

}

const Catalog& catalog_;

FunctionRegistry<D>& functions_;