Enum JoinPrecheckState 

pub enum JoinPrecheckState {
    Unbuilt,
    Active {
        distinct_keys: usize,
        complete: bool,
    },
    Disabled,
}

A read-only snapshot of one join’s parent-key set (op::join_util::ParentKeySet) for inspection and tests (Graph::join_precheck_state).

Variants

Unbuilt

Nothing observed yet, or the pre-check is off.

Active

A live region: how many distinct keys it holds, and whether it covers the whole parent input (complete) or ends at a finite frontier.

Fields

distinct_keys: usize

complete: bool

Disabled

Gate tripped or chain ineligible; the join fetches for the rest of its life.

Trait Implementations

impl Clone for JoinPrecheckState

fn clone(&self) -> JoinPrecheckState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinPrecheckState

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

Formats the value using the given formatter.

impl PartialEq for JoinPrecheckState

fn eq(&self, other: &JoinPrecheckState) -> 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 Eq for JoinPrecheckState

impl StructuralPartialEq for JoinPrecheckState