org.apache.cocoon.portal.event
Interface EventManager

All Known Implementing Classes:

DefaultEventManager

public interface EventManager

This component manages the event handling mechanism in the portal. The event mechanism is based on the publisher/subscriber principle. An interested component (a Receiver can subscribe itself for a specific class (or classes) of events. All Events have a common ancestor type Event and the event types are identified by a (sub)class

Version:

$Id: EventManager.java 312664 2005-10-10 15:20:02Z cziegeler $

Field Summary

static String

ROLE Represents the role of the service

Method Summary

void	processEvents() Process the events
void	send(Event event) Publish an event.
void	subscribe(Receiver receiver) Subscribes a receiver for a specific type of event.
void	unsubscribe(Receiver receiver) Unsubscribes a receiver for all events.

Field Detail

ROLE

public static final String ROLE

Represents the role of the service

Method Detail

processEvents

public void processEvents()
                   throws ProcessingException

Process the events

Throws:

ProcessingException

send

public void send(Event event)

Publish an event. All registered receivers get notified.

Parameters:

event - The event to broadcast.

subscribe

public void subscribe(Receiver receiver)

Subscribes a receiver for a specific type of event.

unsubscribe

public void unsubscribe(Receiver receiver)

Unsubscribes a receiver for all events.