Trait Command

pub trait Command<E: Event> {
    type State: AggregateState<E>;
    type Error: Error + Send + Sync + 'static;

    // Required methods
    fn handle(&self) -> Result<Vec<E>, Self::Error>;
    fn event_stream_id(&self) -> EventStreamId;
    fn get_state(&self) -> Self::State;
    fn set_state(&self, state: Self::State) -> Self;

    // Provided methods
    fn mark_retry(&self) -> Self
       where Self: Sized + Clone { ... }
    fn override_expected_version(&self) -> Option<EventStreamVersion> { ... }
    fn apply(&mut self, event: E) -> Self
       where Self: Sized { ... }
}

Required Associated Types

type State: AggregateState<E>

type Error: Error + Send + Sync + 'static

Required Methods

fn handle(&self) -> Result<Vec<E>, Self::Error>

fn event_stream_id(&self) -> EventStreamId

fn get_state(&self) -> Self::State

fn set_state(&self, state: Self::State) -> Self

Provided Methods

fn mark_retry(&self) -> Self

where Self: Sized + Clone,

fn override_expected_version(&self) -> Option<EventStreamVersion>

fn apply(&mut self, event: E) -> Self

where Self: Sized,

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<E: Event> Command<E> for ()

type State = ()

type Error = Infallible

fn handle(&self) -> Result<Vec<E>, Self::Error>

fn event_stream_id(&self) -> EventStreamId

fn get_state(&self) -> Self::State

fn set_state(&self, _: Self::State) -> Self

fn mark_retry(&self) -> Self

Implementors