/*
* GWTEventService
* Copyright (c) 2011 and beyond, strawbill UG (haftungsbeschr�nkt)
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
* Other licensing for GWTEventService may also be possible on request.
* Please view the license.txt of the project for more information.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package de.novanic.eventservice.service.registry;
import de.novanic.eventservice.config.EventServiceConfigurationFactory;
import de.novanic.eventservice.config.EventServiceConfiguration;
import de.novanic.eventservice.service.registry.user.UserManagerFactory;
/**
* The EventRegistryFactory is used to create the EventRegistry and to ensure that only one instance of
* EventRegistryFactory and EventRegistry exists (singleton).
* @see EventRegistry
*
* @author sstrohschein
* <br>Date: 09.06.2008
* <br>Time: 22:46:51
*/
public class EventRegistryFactory
{
private volatile EventRegistry myEventRegistry;
/**
* The EventRegistryFactory should be created via the getInstance method.
* @see EventRegistryFactory#getInstance()
*/
private EventRegistryFactory() {}
/**
* Factory-Holder class to ensure thread-safe lazy-loading with IODH.
*/
private static class EventRegistryFactoryHolder {
private static EventRegistryFactory INSTANCE = new EventRegistryFactory();
}
/**
* This method should be used to create an instance of EventRegistryFactory.
* EventRegistryFactory is a singleton, so this method returns always the same instance of EventRegistryFactory.
* @return EventRegistryFactory (singleton)
*/
public static EventRegistryFactory getInstance() {
return EventRegistryFactoryHolder.INSTANCE;
}
/**
* This method should be used to create an instance of EventRegistry.
* EventRegistry is a singleton, so this method returns always the same instance of EventRegistry.
* @return EventRegistry (singleton)
*/
public EventRegistry getEventRegistry() {
if(myEventRegistry == null) {
synchronized(this) {
if(myEventRegistry == null) {
EventServiceConfiguration theConfiguration = getEventServiceConfiguration();
myEventRegistry = new DefaultEventRegistry(theConfiguration);
}
}
}
return myEventRegistry;
}
public void resetEventRegistry() {
synchronized(this) {
myEventRegistry = null;
UserManagerFactory.getInstance().getUserManager().reset();
}
}
/**
* Loads the {@link de.novanic.eventservice.config.EventServiceConfiguration} with {@link de.novanic.eventservice.config.EventServiceConfigurationFactory}.
* @return configuration ({@link de.novanic.eventservice.config.EventServiceConfiguration})
*/
private EventServiceConfiguration getEventServiceConfiguration() {
EventServiceConfigurationFactory theConfigurationFactory = EventServiceConfigurationFactory.getInstance();
return theConfigurationFactory.loadEventServiceConfiguration();
}
}