EventRegistry (OpenNMS 29.0.10 API)

java.lang.Object
- org.opennms.osgi.EventRegistry

```
public class EventRegistry
extends Object
```
The EventRegistry is a single point of entry to get an EventListener/EventConsumer registered in the underlying OSGi-Container. To register an EventConsumer, you have to invoke the method addPossibleEventConsumer(Object, VaadinApplicationContext).

Author:

Markus von Rüden

Constructor Summary

Constructors
Constructor Description

EventRegistry(org.osgi.framework.BundleContext bundleContext)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addPossibleEventConsumer(Object possibleEventConsumer, VaadinApplicationContext applicationContext)`	Adds the possibleEventConsumer as an EventListener/EventConsumer to the OSGi registry. The event consumer is registered when: The object has at least one method annotated with @EventConsumer The annotated method has only one parameter.
`EventProxy`	`getScope(VaadinApplicationContext vaadinApplicationContext)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EventRegistry
```
public EventRegistry(org.osgi.framework.BundleContext bundleContext)
```
- Method Detail
  - addPossibleEventConsumer
```
public void addPossibleEventConsumer(Object possibleEventConsumer,
                                     VaadinApplicationContext applicationContext)
```
    Adds the possibleEventConsumer as an EventListener/EventConsumer to the OSGi registry.
    
    The event consumer is registered when:
    
    The object has at least one method annotated with @EventConsumer
    
    The annotated method has only one parameter.
    
    Attention: If the possibleEventConsumer has no Annotation @EventConsumer or has multiple method parameters the object is not registered as a listener!
    The VaadinApplicationContext parameter is used to bind the event consumer to the user session (otherwise all users would be informed when one user provokes an event notification).
    Parameters:
    
    possibleEventConsumer - An object with or without an annotation @EventConsumer.
    
    applicationContext - must not be null. is used to bind the event consumer to the user session (otherwise all users would be informed when one user provokes an event notification).
  - getScope
```
public EventProxy getScope(VaadinApplicationContext vaadinApplicationContext)
```