Enum ApplyOrder

pub enum ApplyOrder {
    TopDown,
    BottomUp,
}

Specifies how recursion for an OptimizerRule should be handled.

• Some(apply_order): The Optimizer will recursively apply the rule to the plan.
• None: the rule must handle any required recursion itself.

Variants

TopDown

Apply the rule to the node before its inputs

BottomUp

Apply the rule to the node after its inputs

Trait Implementations

impl Clone for ApplyOrder

fn clone(&self) -> ApplyOrder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ApplyOrder

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

Formats the value using the given formatter.

impl PartialEq for ApplyOrder

fn eq(&self, other: &ApplyOrder) -> 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 Copy for ApplyOrder

impl StructuralPartialEq for ApplyOrder