jmediator

Simple in-process mediator implementation.

Prerequisites

Requires Java 17

Examples

jmediator attempts to decouple the in-process sending of messages from how they are handled.

First, create a message by creating a class that implements the Request interface. The Request interface handles both commands and queries.

public class HelloRequest implements Request {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Message{" +
            "payload='" + name + '\'' +
            '}';
    }
}

Next, lets create the corresponding handler

@Named
public class HelloRequestHandler implements RequestHandler<HelloRequest, String> {

    @Override
    public String handle(HelloRequest request) {
        return "Hello " + request.getName();
    }

}

Finally, we can send a message through the mediator

String response dispatcher.send(new HelloRequest("Sean"));
System.out.println(response); // prints "Hello Sean"

Inspiration

This project was inspired by Jimmy Bogard's Mediator project