Esys

An event bus for java designed to be easy to use, fast and yet flexible. Work is still in progress.

Create an EventBus

To create a default event bus with a name:

import org.cubic.esys.EventBus;

public class App {

    public static final EventBus EVENT_BUS = EventBus.buildDefault("the event bus");
}

Subscribe to objects and classes

Subscribing to objects:

import org.cubic.esys.EventBus;

public class App {

    public static final EventBus EVENT_BUS = EventBus.buildDefault("the event bus");

    public static void main(String[] args) {
        // our object we want to subscribe to
        App app = new App();
        EVENT_BUS.subscribe(app);
        EVENT_BUS.unsubscribe(app);
    }
}

Subscribing to classes:

import org.cubic.esys.EventBus;

public class App {

    public static final EventBus EVENT_BUS = EventBus.buildDefault("the event bus");

    public static void main(String[] args) {
        EVENT_BUS.subscribe(App.class);
        EVENT_BUS.unsubscribe(App.class);
    }
}

Listeners

A simple example:

import org.cubic.esys.EventBus;
import org.cubic.esys.Subscribe;

public class App {

    public static final EventBus EVENT_BUS = EventBus.buildDefault("the event bus");

    public static void main(String[] args) {
        EVENT_BUS.subscribe(App.class);
        EVENT_BUS.unsubscribe(App.class);
    }

    @Subscribe
    public static void onEvent(SomeEvent event) {
        // handle the event...
    }
}

Posting events

import org.cubic.esys.EventBus;

public class App {

    public static final EventBus EVENT_BUS = EventBus.buildDefault("the event bus");

    public static void main(String[] args) {
        Event e = new Event(); // some event we want to post
        EVENT_BUS.post(e);
    }
}