org.mmbase.core.event
Class EventManager

java.lang.Object
  org.mmbase.core.event.EventManager

public class EventManager

extends Object

This class manages all event related stuff. it is the place to register event brokers, and it will propagate all events. The class is set up as a singleton, with lazy instantiation. When the manager is instantiated, event brokers are added for Event, NodeEvent and RelationEvent

Since:

MMBase-1.8

Version:

$Id: EventManager.java,v 1.12 2006/06/20 21:23:15 michiel Exp $

Author:

Ernst Bunders

Field Summary

static String	DTD_EVENTMANAGER
static String	PUBLIC_ID_EVENTMANAGER
protected ResourceWatcher	watcher

Method Summary

void	addEventBroker(AbstractEventBroker broker) add an event broker for a specific type of event
void	addEventListener(EventListener listener)
protected void	configure(String resource)
static EventManager	getInstance() use this metod to get an instance of the event manager
long	getNumberOfPropagatedEvents()
long	getPropagationCost()
void	propagateEvent(Event event) This method will propagate the given event to all the aproprate listeners.
void	removeEventBroker(AbstractEventBroker broker) remove a broker for a specific type of event
void	removeEventListener(EventListener listener)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PUBLIC_ID_EVENTMANAGER

public static final String PUBLIC_ID_EVENTMANAGER

See Also:

Constant Field Values

DTD_EVENTMANAGER

public static final String DTD_EVENTMANAGER

See Also:

Constant Field Values

watcher

protected ResourceWatcher watcher

Method Detail

getInstance

public static EventManager getInstance()

use this metod to get an instance of the event manager

configure

protected void configure(String resource)

addEventBroker

public void addEventBroker(AbstractEventBroker broker)

add an event broker for a specific type of event

Parameters:

broker -

removeEventBroker

public void removeEventBroker(AbstractEventBroker broker)

remove a broker for a specific type of event

Parameters:

broker -

addEventListener

public void addEventListener(EventListener listener)

Parameters:

listener -

removeEventListener

public void removeEventListener(EventListener listener)

Parameters:

listener -

propagateEvent

public void propagateEvent(Event event)

This method will propagate the given event to all the aproprate listeners. what makes a listener apropriate is determined by it's type (class) and by possible constraint properties (if the handling broker supports those

Parameters:

event -

See Also:

AbstractEventBroker

getNumberOfPropagatedEvents

public long getNumberOfPropagatedEvents()

Since:

MMBase-1.8.1

getPropagationCost

public long getPropagationCost()

Since:

MMBase-1.8.1