Struct ProjectionEngineHandler 

pub struct ProjectionEngineHandler { /* private fields */ }

Adapter that lets a ProjectionEngine subscribe to an EventBus. Wraps the engine in an EventHandler that routes every relevant event through ProjectionEngine::process. The engine stays accessible from outside (e.g. for rebuild_all) via the same Arc.

Lives in arc-core because the adapter needs nothing app-specific — any aggregate’s projector can be driven through it.

Implementations

impl ProjectionEngineHandler

pub fn new(engine: Arc<ProjectionEngine>) -> Self

Trait Implementations

impl EventHandler for ProjectionEngineHandler

fn handles(&self) -> Vec<String>

Returns the list of event types this handler is interested in.

fn handle<'life0, 'life1, 'async_trait>( &'life0 self, event: &'life1 Event, ) -> Pin<Box<dyn Future<Output = Result<(), Box<dyn Error + Send + Sync>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Handle a published event.

fn lane(&self) -> HandlerLane

Selects the delivery lane for this handler.