Package org.axonframework.messaging.core.annotation

Interface HandlerDefinition

All Known Implementing Classes:

AnnotatedMessageHandlingMemberDefinition, MultiHandlerDefinition

public interface HandlerDefinition

Interface that describes an object capable of inspecting a method to determine if the method is suitable for message handling. If the method is suitable the definition returns a MessageHandler instance to invoke the method.

Since:

2.1.0

Author:

Allard Buijze

Method Summary

Modifier and Type	Method	Description
<T> Optional<MessageHandlingMember<T>>	createHandler(Class<T> declaringType, Method method, ParameterResolverFactory parameterResolverFactory, Function<Object,MessageStream<?>> messageStreamResolver)	Create a MessageHandlingMember for the given method method.

Method Details

createHandler

<T> Optional<MessageHandlingMember<T>> createHandler(@Nonnull
 Class<T> declaringType,
 @Nonnull
 Method method,
 @Nonnull
 ParameterResolverFactory parameterResolverFactory,
 @Nonnull
 Function<Object,MessageStream<?>> messageStreamResolver)

Create a MessageHandlingMember for the given method method. Use the given parameterResolverFactory to resolve the method's parameters.

Type Parameters:

T - The type of the declaring object

Parameters:

declaringType - The type of object declaring the given method

method - The method to inspect

parameterResolverFactory - Factory for a ParameterResolver of the method

messageStreamResolver - The lambda resolving a MessageStream out of the result from MessageHandlingMember.handle(Message, ProcessingContext, Object).

Returns:

An optional containing the handler if the method is suitable, or an empty Nullable otherwise.