Enum MatchReason 

pub enum MatchReason {
    Matched,
    TriggerDisabled,
    CollectionMismatch,
    ChangeKindMismatch,
    ChangeValueAbsent,
    PredicateFieldAbsent,
    PredicateValueMismatch,
}

Why the decision came out the way it did.

The reason is part of the contract, not a diagnostic afterthought: it fixes the order in which the checks are applied, so two implementations cannot agree on matched by accident while disagreeing about the semantics.

Variants

Matched

Every check passed.

TriggerDisabled

The trigger is disabled.

CollectionMismatch

The change’s collection is not the trigger’s source collection.

ChangeKindMismatch

The change kind is not the trigger’s change kind.

ChangeValueAbsent

A predicate is declared but the change carried no value.

PredicateFieldAbsent

The predicate’s field path does not resolve in the change value.

PredicateValueMismatch

The predicate’s field resolved to a value that is not equals.

Trait Implementations

impl Clone for MatchReason

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MatchReason

impl Debug for MatchReason

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MatchReason

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MatchReason

impl PartialEq for MatchReason

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for MatchReason

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MatchReason