Enum MutationErrorClass 

#[non_exhaustive]
pub enum MutationErrorClass {
    Validation,
    Conflict,
    NotFound,
    Unauthorized,
    Forbidden,
    Internal,
    TransactionFailed,
    Timeout,
    RateLimited,
    ServiceUnavailable,
}

Classification of a failed mutation.

Mirrors app.mutation_error_class in PostgreSQL. Variants serialize to the snake_case form used in the PG enum so rows containing error_class strings deserialize directly. NULL in the PG column corresponds to Option::None in the parent struct.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Validation

Input failed schema or business-rule validation.

Conflict

Uniqueness, optimistic-concurrency, or state conflict.

NotFound

Target entity does not exist or the caller cannot see it.

Unauthorized

Caller is unauthenticated.

Forbidden

Caller is authenticated but lacks permission.

Internal

Unhandled server-side failure. Implementation details must not leak.

TransactionFailed

Transaction was rolled back (serialization, deadlock, explicit abort).

Timeout

Operation exceeded a deadline.

RateLimited

Caller exceeded quota.

ServiceUnavailable

Downstream dependency unreachable.

Implementations

impl MutationErrorClass

pub const fn as_str(self) -> &'static str

The snake_case string that identifies this class on the wire.

Mirrors the app.mutation_error_class PostgreSQL enum label and the serde(rename_all = "snake_case") serialisation form used in v2 rows.

pub const fn to_cascade_code(self) -> CascadeErrorCode

Map the error class to its graphql-cascade wire code (1:1, no fallbacks).

Trait Implementations

impl Clone for MutationErrorClass

fn clone(&self) -> MutationErrorClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MutationErrorClass

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MutationErrorClass

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for MutationErrorClass

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for MutationErrorClass

fn eq(&self, other: &MutationErrorClass) -> 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 MutationErrorClass

impl Eq for MutationErrorClass

impl StructuralPartialEq for MutationErrorClass