setApplicationEventBus method

Sets the ApplicationEventBus for this application context.

The event bus is the central hub for event-driven communication within the application, supporting both synchronous and asynchronous event processing patterns.

Event Bus Capabilities:

• Event Publication: Publish events to registered listeners
• Listener Registration: Dynamic listener management
• Error Handling: Configurable error handling strategies
• Filtering: Event filtering and conditional delivery
• Ordering: Listener execution order control

Typical initialization:

// Create and configure event bus
final eventBus = ApplicationEventBus();
eventBus.setErrorHandler((event, listener, error) {
  logger.error('Event delivery failed', error: error);
});

context.setApplicationEventBus(eventBus);

// Usage in application components
class OrderService {
  final ApplicationEventBus eventBus;
  
  OrderService(this.eventBus);
  
  Future<Order> processOrder(Order order) async {
    // Business logic...
    
    // Publish domain event
    eventBus.publish(OrderProcessedEvent(this, order));
    
    return order;
  }
}