Trait Projection 

pub trait Projection {
    type State;
    type Event;

    // Required methods
    fn initial() -> Self::State;
    fn apply(state: Self::State, event: &Self::Event) -> Self::State;
}

Fold an ordered event stream into aggregate state.

Required Associated Types

type State

Rebuilt aggregate state.

type Event

Domain event type consumed by this projection.

Required Methods

fn initial() -> Self::State

State before any events are applied.

fn apply(state: Self::State, event: &Self::Event) -> Self::State

Apply a single event to state, returning the new state.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Projection for TaskLifecycleProjection

type State = TaskProjectionState

type Event = TaskLifecycleEvent