EventManager

Manages event subscribers and dispatches entity/flush/transaction lifecycle events.

Index

Constructors

• constructor

Methods

• clone
• dispatchEvent
• getSubscribers
• hasListeners
• registerSubscriber

Constructors

constructor

• new EventManager(subscribers): EventManager

• Parameters

  • subscribers: Iterable<EventSubscriber<any>, any, any>

  Returns EventManager

Methods

clone

• clone(): EventManager

• Creates a new EventManager with the same set of subscribers.

  ---

  Returns EventManager

dispatchEvent

• dispatchEvent<T>(event, args, meta): unknown
• dispatchEvent<T>(event, args, meta): unknown
• dispatchEvent<T>(event, args, meta): Promise<unknown>

• Parameters

  • event: TransactionEventType

  • args: TransactionEventArgs

  • optionalmeta: EntityMetadata<T, EntityCtor<T>>

  Returns unknown

getSubscribers

• getSubscribers(): Set<EventSubscriber<any>>

• Returns the set of all registered event subscribers.

  ---

  Returns Set<EventSubscriber<any>>

hasListeners

• hasListeners<T>(event, meta): boolean

• Checks whether there are any listeners (hooks or subscribers) for the given event type and entity.

  ---

  Parameters

  • event: EventType

  • meta: EntityMetadata<T, EntityCtor<T>>

  Returns boolean

registerSubscriber

• registerSubscriber(subscriber): void

• Registers an event subscriber and indexes its subscribed entities and event types.

  ---

  Parameters

  • subscriber: EventSubscriber<any>

  Returns void