org.macroing.cit.messaging

Interface MessageHandler

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface MessageHandler

A MessageHandler handles a Message sent to a MessageChannel instance.

It uses a variant of the Chain of Responsibility (CoR) design pattern.

To use this interface, consider the following example.

 
 MessageChannel messageChannel = new MessageChannel();
 messageChannel.addMessageHandler(new MyMessageHandler());
 
 

Since:

1.0.0

Author:

Jörgen Lundgren

Method Summary

Modifier and Type	Method and Description
boolean	handle(Message message) Called when a MessageChannels sendMessage(Message) method is called.

Method Detail

handle

boolean handle(Message message)

Called when a MessageChannels sendMessage(Message) method is called.

If true is returned, the chain will be broken and the Message will be considered successfully handled.

Breaking the chain technically means that no successive MessageHandler will be able to handle the given Message.

Parameters:

message - the Message to handle

Returns:

true if, and only if, the Message should be considered successfully handled, false otherwise