Package org.axonframework.eventhandling

Classes related to event handling and dispatching, such as Event Listeners and the Event Bus.

See: Description

Interface Summary

Interface	Description
ErrorHandler	Interface of the error handler that will be invoked if event processing fails.
EventBus	Specification of the mechanism on which the Event Listeners can subscribe for events and event publishers can publish their events.
EventHandlerInvoker	Interface for an event message handler that defers handling to one or more other handlers.
EventListener	Interface to be implemented by classes that can handle events.
EventListenerProxy	Specialist interface for implementations of an event listener that redirect actual processing to another instance.
EventMessage<T>	Represents a Message wrapping an Event, which is represented by its payload.
EventProcessingStrategy	Interface describing a strategy for the processing of a batch of events.
EventProcessor	An Event Processor processes event messages from an event queue or event bus.
ListenerInvocationErrorHandler	Interface of an error handler that is invoked when an exception is triggered as result of an EventListener handling an event.
TrackedEventMessage<T>	Represents an EventMessage containing a TrackingToken.

Class Summary

Class	Description
AbstractEventBus	Base class for the Event Bus.
AbstractEventProcessor	Abstract implementation of an EventProcessor.
AnnotationEventListenerAdapter	Adapter that turns any bean with EventHandler annotated methods into an EventListener.
ConcludesBatchParameterResolverFactory	Paramater resolver factory for boolean event handler parameters annotated with ConcludesBatch.
ErrorContext	Describes the context of an error.
GenericEventMessage<T>	Generic implementation of the EventMessage interface.
GenericTrackedEventMessage<T>	Generic implementation of a TrackedEventMessage.
LoggingErrorHandler	Implementation of a ListenerInvocationErrorHandler that logs exceptions as errors but otherwise does nothing to prevent event handling from continuing.
Segment	A representation of a segment and corresponding mask with various capabilities.
SimpleEventBus	Implementation of the EventBus that supports streaming of events via SimpleEventBus.openStream(TrackingToken) but only of the most recently published events as it is not backed by a cache or event storage.
SimpleEventHandlerInvoker	Implementation of an EventHandlerInvoker that forwards events to a list of registered EventListeners.
SubscribingEventProcessor	Event processor implementation that subscribes to the EventBus for events.
TimestampParameterResolverFactory	AbstractAnnotatedParameterResolverFactory that accepts parameters with type Instant that are annotated with the Timestamp annotation and assigns the timestamp of the EventMessage.
TrackingEventProcessor	EventProcessor implementation that tracks events from a StreamableMessageSource.
TrackingEventProcessorConfiguration	Configuration object for the TrackingEventProcessor.

Enum Summary

Enum	Description
DirectEventProcessingStrategy	Event processing strategy that directly initiates event processing.
PropagatingErrorHandler	Singleton ErrorHandler implementation that does not do anything.
ThrowingListenerErrorHandler	Implementation that simply throws the reported exception.
TrackingEventProcessor.State

Exception Summary

Exception	Description
EventProcessingException	Exception thrown when an EventProcessor failed to handle a batch of events.
TransactionMethodExecutionException	Wrapper for exceptions that occurred while calling an @BeforeTransaction or @AfterTransaction annotated method.

Annotation Types Summary

Annotation Type	Description
ConcludesBatch	Annotation indication that a parameter on an EventHandler method should be injected with a value that informs whether the event is the last event of a processed batch of events.
EventHandler	Annotation to be placed on methods that can handle events.
Timestamp	Annotation indication that a parameter on an Event Handler method should be injected with the Timestamp of an Event Message.

Package org.axonframework.eventhandling Description

Classes related to event handling and dispatching, such as Event Listeners and the Event Bus.