Struct PushGuard 

pub struct PushGuard {
    pub col: ColId,
    pub values: Vec<OwnedValue>,
}

predicate(row) ⇒ row[col] ∈ values — a finite single-column implication of a connection’s pushed-down equality-shaped filter, extracted (in crate::builder) from the same stripped condition the connection’s RowPredicate was compiled from. Backend-neutral pure data (like SqlCondition), populated for both the memory and SQLite leaves.

values is deduplicated by extraction and is non-empty in practice — an empty set is the legitimate encoding of a never-matching predicate (an empty IN, or col = NULL which SQL folds to false); such a guard indexes its slot nowhere (not even the scan list), which is exact because the connection can receive no pushes. (No derived PartialEq: OwnedValue deliberately has none — the engine’s dual-comparator convention forces callers to pick values_identical vs values_equal explicitly. Compare guards field-wise in tests.)

Fields

col: ColId

values: Vec<OwnedValue>

Trait Implementations

impl Clone for PushGuard

fn clone(&self) -> PushGuard

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PushGuard

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

Formats the value using the given formatter.