Package jakarta.enterprise.invoke

Interface AsyncHandler

public interface AsyncHandler

Determines when an asynchronous action started by an invocation of an asynchronous method completes. For the purpose of method invokers, a method is called asynchronous if it matches exactly one async handler. An async handler is either a return type async handler or a parameter type async handler. For an asynchronous method, the matching async handler is called during Invoker.invoke().

Async handlers must be stateless. No guarantees about their lifecycle are made.

The CDI container provides built-in return type async handlers for CompletionStage, CompletableFuture and Flow.Publisher.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	AsyncHandler.ParameterType<T>	A parameter type async handler is a service provider for this interface declared in META-INF/services.
static interface	AsyncHandler.ReturnType<T>	A return type async handler is a service provider for this interface declared in META-INF/services.