Struct MutationResponse 

#[non_exhaustive]
pub struct MutationResponse {

    pub succeeded: bool,
    pub state_changed: bool,
    pub error_class: Option<MutationErrorClass>,
    pub status_detail: Option<String>,
    pub http_status: Option<i16>,
    pub message: Option<String>,
    pub entity_id: Option<Uuid>,
    pub entity_type: Option<String>,
    pub entity: Value,
    pub updated_fields: Vec<String>,
    pub cascade: Value,
    pub error_detail: Value,
    pub metadata: Value,
}

Typed app.mutation_response row.

Field types map 1:1 to the PostgreSQL composite columns. See docs/architecture/mutation-response.md.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

succeeded: bool

Terminal outcome. true means the operation completed (including noops).

state_changed: bool

Did the database actually change? Independent of succeeded.

error_class: Option<MutationErrorClass>

NULL iff succeeded. Drives the cascade error code 1:1.

status_detail: Option<String>

Human-readable subtype (e.g. "duplicate_email"); not parsed.

http_status: Option<i16>

HTTP status, first-class. Validated to 100..=599 on ingest.

message: Option<String>

Human-readable summary safe to show to end users.

entity_id: Option<Uuid>

Primary key of the affected entity. Present for updates/deletes.

entity_type: Option<String>

GraphQL type name (e.g. "User"). Used for cache invalidation.

entity: Value

Full entity payload. Populated even for noops.

updated_fields: Vec<String>

GraphQL field names that changed. Empty on noop.

cascade: Value

Cascade operations (see the graphql-cascade specification).

error_detail: Value

Structured error payload only (field / constraint / severity).

metadata: Value

Observability only (trace IDs, timings, audit extras).

Trait Implementations

impl Clone for MutationResponse

fn clone(&self) -> MutationResponse

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MutationResponse

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MutationResponse

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.