package org.jacorb.notification;
/*
* JacORB - a free Java ORB
*
* Copyright (C) 1997-2003 Gerald Brose.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.jacorb.notification.interfaces.Disposable;
import org.jacorb.notification.interfaces.EventChannelEvent;
import org.jacorb.notification.interfaces.EventChannelEventListener;
import org.omg.CosNotifyChannelAdmin.ChannelNotFound;
/**
* @author Alphonse Bendt
* @version $Id: ChannelManager.java,v 1.5 2005-08-21 13:29:03 alphonse.bendt Exp $
*/
public class ChannelManager implements Disposable
{
private static final Object[] INTEGER_ARRAY_TEMPLATE = new Integer[0];
private final Map channels_ = new HashMap();
private final Object channelsLock_ = channels_;
private boolean isChannelsModified_ = true;
private int[] cachedKeys_;
private final List eventListeners_ = new ArrayList();
//////////////////////////////
public int[] get_all_channels()
{
synchronized (channelsLock_)
{
if (isChannelsModified_)
{
Integer[] _keys = (Integer[]) channels_.keySet().toArray(INTEGER_ARRAY_TEMPLATE);
cachedKeys_ = new int[_keys.length];
for (int x = 0; x < _keys.length; ++x)
{
cachedKeys_[x] = _keys[x].intValue();
}
isChannelsModified_ = false;
}
}
return cachedKeys_;
}
public AbstractEventChannel get_channel_servant(int id) throws ChannelNotFound
{
Integer _key = new Integer(id);
synchronized (channelsLock_)
{
if (channels_.containsKey(_key))
{
return (AbstractEventChannel) channels_.get(_key);
}
throw new ChannelNotFound("The Channel " + id + " does not exist");
}
}
public void add_channel(int key, final AbstractEventChannel channel)
{
final Integer _key = new Integer(key);
synchronized (channelsLock_)
{
channels_.put(_key, channel);
isChannelsModified_ = true;
}
channel.registerDisposable(new Disposable()
{
public void dispose()
{
synchronized (channelsLock_)
{
channels_.remove(_key);
isChannelsModified_ = true;
}
fireChannelRemoved(channel);
}
});
fireChannelAdded(channel);
}
private void fireChannelRemoved(AbstractEventChannel channel)
{
EventChannelEvent _event = new EventChannelEvent(channel);
synchronized (eventListeners_)
{
Iterator i = eventListeners_.iterator();
while (i.hasNext())
{
((EventChannelEventListener) i.next()).actionEventChannelDestroyed(_event);
}
}
}
private void fireChannelAdded(AbstractEventChannel servant)
{
EventChannelEvent _event = new EventChannelEvent(servant);
synchronized (eventListeners_)
{
Iterator i = eventListeners_.iterator();
while (i.hasNext())
{
((EventChannelEventListener) i.next()).actionEventChannelCreated(_event);
}
}
}
public void addEventChannelEventListener(EventChannelEventListener listener)
{
synchronized (eventListeners_)
{
eventListeners_.add(listener);
}
}
public void removeEventChannelEventListener(EventChannelEventListener listener)
{
synchronized (eventListeners_)
{
eventListeners_.remove(listener);
}
}
public Iterator getChannelIterator()
{
synchronized (channelsLock_)
{
return channels_.entrySet().iterator();
}
}
public void dispose()
{
synchronized (channelsLock_)
{
Iterator i = channels_.entrySet().iterator();
while (i.hasNext())
{
AbstractEventChannel _channel = (AbstractEventChannel) ((Map.Entry) i.next())
.getValue();
i.remove();
_channel.destroy();
}
}
eventListeners_.clear();
}
}