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/*
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.buddies.internal.common;
import org.eclipse.net4j.buddies.common.IBuddy;
import org.eclipse.net4j.buddies.common.ICollaboration;
import org.eclipse.net4j.buddies.common.IMembership;
import org.eclipse.net4j.buddies.common.IMembershipContainer;
import org.eclipse.net4j.buddies.common.IMembershipKey;
import org.eclipse.net4j.util.container.IContainerDelta;
import org.eclipse.net4j.util.container.SingleDeltaContainerEvent;
import org.eclipse.net4j.util.event.IEvent;
import org.eclipse.net4j.util.event.IListener;
import org.eclipse.net4j.util.lifecycle.ILifecycleEvent;
import org.eclipse.net4j.util.lifecycle.Lifecycle;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* @author Eike Stepper
*/
public class MembershipContainer extends Lifecycle implements IMembershipContainer, IListener
{
private ConcurrentMap<IMembershipKey, IMembership> memberships = new ConcurrentHashMap<IMembershipKey, IMembership>();
public MembershipContainer()
{
}
public void addMembership(IMembership membership)
{
if (memberships.putIfAbsent(membership, membership) == null)
{
IListener[] listeners = getListeners();
if (listeners != null)
{
fireEvent(new SingleDeltaContainerEvent<IMembership>(this, membership, IContainerDelta.Kind.ADDED), listeners);
}
membership.addListener(this);
}
}
public IMembership removeMembership(IBuddy buddy, ICollaboration collaboration)
{
return removeMembership(new MembershipKey(buddy, collaboration));
}
public IMembership removeMembership(IMembershipKey key)
{
// for (IMembership membership : memberships.values())
// {
//
// }
//
IMembership membership = memberships.remove(key);
if (membership != null)
{
membership.removeListener(this);
IListener[] listeners = getListeners();
if (listeners != null)
{
fireEvent(new SingleDeltaContainerEvent<IMembership>(this, membership, IContainerDelta.Kind.REMOVED), listeners);
}
}
return membership;
}
public IMembership[] getMemberships()
{
return memberships.values().toArray(new IMembership[memberships.size()]);
}
public IMembership getMembership(IBuddy buddy, ICollaboration collaboration)
{
return memberships.get(new MembershipKey(buddy, collaboration));
}
public IMembership[] getElements()
{
return getMemberships();
}
public boolean isEmpty()
{
return memberships.isEmpty();
}
public void notifyEvent(IEvent event)
{
if (event.getSource() instanceof IMembership)
{
IMembership membership = (IMembership)event.getSource();
notifyMembershipEvent(event);
if (event instanceof ILifecycleEvent)
{
ILifecycleEvent e = (ILifecycleEvent)event;
if (e.getKind() == ILifecycleEvent.Kind.DEACTIVATED)
{
removeMembership(membership);
}
}
}
}
protected void notifyMembershipEvent(IEvent event)
{
}
@Override
protected void doDeactivate() throws Exception
{
for (IMembership membership : getMemberships())
{
membership.removeListener(this);
}
super.doDeactivate();
}
}
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