org.axonframework.messaging.annotation

Class ChainedMessageHandlerInterceptorMember<T>

java.lang.Object

org.axonframework.messaging.annotation.ChainedMessageHandlerInterceptorMember<T>

Type Parameters:

T - The type that declares the handlers in this chain.

All Implemented Interfaces:

MessageHandlerInterceptorMemberChain<T>

public class ChainedMessageHandlerInterceptorMember<T>
extends Object
implements MessageHandlerInterceptorMemberChain<T>

A MessageHandlerInterceptorMemberChain implementation that constructs a chain of instances of itself based on a given iterator of MessageHandlingMembers.

Since:

4.4.0

Author:

Allard Buijze

Constructor Summary

Constructors

Constructor and Description
ChainedMessageHandlerInterceptorMember(Class<?> handlerType, Iterator<MessageHandlingMember<? super T>> iterator) Constructs a chained message handling interceptor for the given handlerType, constructing a chain from the given iterator.

Method Summary

Modifier and Type	Method and Description
Object	handle(Message<?> message, T target, MessageHandlingMember<? super T> handler) Handle the given message by passing it through the interceptors and ultimately to the given handler on the given target instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ChainedMessageHandlerInterceptorMember

public ChainedMessageHandlerInterceptorMember(Class<?> handlerType,
                                              Iterator<MessageHandlingMember<? super T>> iterator)

Constructs a chained message handling interceptor for the given handlerType, constructing a chain from the given iterator.

The iterator should at least> have a single MessageHandlingMember. If there are more MessageHandlingMembers present in the given iterator, this constructor will be invoked again.

Parameters:

handlerType - The type for which to construct a message handler interceptor chain.

iterator - The MessageHandlingMembers from which to construct the chain.

Method Detail

handle

public Object handle(@Nonnull
                     Message<?> message,
                     @Nonnull
                     T target,
                     @Nonnull
                     MessageHandlingMember<? super T> handler)
              throws Exception

Description copied from interface: MessageHandlerInterceptorMemberChain

Handle the given message by passing it through the interceptors and ultimately to the given handler on the given target instance. The result of this invocation is the result as given by the handler, possibly modified by any of the interceptors in this chain.

Specified by:

handle in interface MessageHandlerInterceptorMemberChain<T>

Parameters:

message - The message to pass through the interceptor chain

target - The target instance to invoke the interceptors and handlers on

handler - The actual handler to invoke once all interceptors have received the message

Returns:

the result as returned by the handlers or interceptors

Throws:

Exception - any exception thrown by the handler or any of the interceptors