/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* 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 2.1 of
* the License, or (at your option) any later version.
*
* 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 org.jboss.capedwarf.datastore.notifications;
import java.util.HashSet;
import java.util.Set;
import org.infinispan.notifications.Listenable;
import org.jboss.capedwarf.common.app.Application;
import org.jboss.capedwarf.shared.components.ComponentRegistry;
import org.jboss.capedwarf.shared.components.Key;
import org.jboss.capedwarf.shared.components.SetKey;
import org.jboss.capedwarf.shared.components.Slot;
/**
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public class CacheListenerRegistry {
/**
* Register listener at runtime.
*
* @param handle the cache handle
*/
public static synchronized void registerListener(Listenable listenable, CacheListenerHandle handle) {
final Key<Set<CacheListenerHandle>> key = new SetKey<CacheListenerHandle>(Slot.CACHE_LISTENERS);
ComponentRegistry registry = ComponentRegistry.getInstance();
Set<CacheListenerHandle> handles = registry.getComponent(key);
if (handles == null || handles.contains(handle) == false) {
if (handles == null) {
handles = new HashSet<CacheListenerHandle>();
registry.setComponent(key, handles);
}
handles.add(handle);
final ClassLoader cl = Application.getAppClassLoader();
listenable.addListener(handle.createListener(cl));
}
}
}