Enum ProjectionError 

pub enum ProjectionError {
    Db(DbErr),
    Json(Error),
    Broadcast(String),
    Events(String),
    StateNotFound {
        name: &'static str,
        key: String,
    },
}

Variants

Db(DbErr)

Underlying SeaORM database error (snapshot upsert, find, delete).

Json(Error)

JSON serialization / deserialization error on P::State round-trips against the persisted JSON column.

Broadcast(String)

Broadcast publish error. Stringly-typed because ferro_broadcast::Error doesn’t compose cleanly through thiserror::From — same pragmatic choice Phase 149 made for ferro_notifications::Error::Broadcast(String).

Per D-21: broadcast failure does NOT roll back state — the snapshot row is already persisted. Surfaces this error so consumers can alarm on it; subscribers reconcile by re-reading the snapshot.

Events(String)

Event-bus error surfaced from ferro_events::Error. Hand-rolled From impl mirrors Broadcast above (D-29).

StateNotFound

Reserved for an explicit read_required helper if a consumer wants Result<State, _> rather than Result<Option<State>, _>. Not used by read itself (which returns Result<Option<_>, _>).

Fields

name: &'static str

key: String

Trait Implementations

impl Debug for ProjectionError

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

Formats the value using the given formatter.

impl Display for ProjectionError

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

Formats the value using the given formatter.

impl Error for ProjectionError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<DbErr> for ProjectionError

fn from(source: DbErr) -> Self

Converts to this type from the input type.

impl From<Error> for ProjectionError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for ProjectionError

fn from(e: Error) -> Self

Converts to this type from the input type.

impl From<Error> for ProjectionError

fn from(e: Error) -> Self

Converts to this type from the input type.