EventBus
The EventBus module was originally developed by Justin DeWind on Atomicobject blog, under the terms of the MIT License.
This variation allows configuring more than one EventBus for each Injector; let's define first an event:
public final class ApplicationEvent
{
}And an event handler
public interface ApplicationEventHandler
{
void when( ApplicationEvent applicationEvent );
}with related implementation
public final class DefaultApplicationEventHandler
implements ApplicationEventHandler
{
@javax.inject.Inject
private Dependency myDependency;
// setters omitted for brevity
@Override
@com.google.common.eventbus.Subscribe
public void when( ApplicationEvent applicationEvent )
{
// do something you need
}
}then you can create the Injector
public final class MySystem
{
@javax.inject.Inject
@javax.inject.Named( "eventbus.test" )
private EventBus eventBus;
// setters omitted for brevity
public void start()
{
com.google.inject.Guice.createInjector( new org.apache.onami.guava.eventbus.EventBusModule()
{
@Override
protected void configure()
{
bind( ApplicationEventHandler.class ).to( DefaultApplicationEventHandler.class );
bindBus( "eventbus.test" ).toAnyBoundClass();
}
} ).injectMembers( this );
}
public void notify()
{
eventBus.post( new ApplicationEvent() );
}
}That's all, have fun!