/*
 *        JacORB - a free Java ORB
 *
 *   Copyright (C) 1999-2014 Gerald Brose / The JacORB Team.
 *
 *   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.
 *
 */

package org.jacorb.test.notification.queue;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jacorb.notification.interfaces.Message;
import org.jacorb.notification.queue.AbstractBoundedEventQueue;
import org.jacorb.notification.queue.EventQueueOverflowStrategy;

class DelegatingOverflowStrategy implements EventQueueOverflowStrategy
{
    private final List removedEvents_;
    
    private final EventQueueOverflowStrategy delegate_;

    public DelegatingOverflowStrategy(EventQueueOverflowStrategy delegate)
    {
        super();
        
        delegate_ = delegate;
        removedEvents_ = new ArrayList();
    }

    public Message removeElementFromQueue(AbstractBoundedEventQueue queue)
    {
        final Message _mesg = delegate_.removeElementFromQueue(queue);

        removedEvents_.add(_mesg);

        return _mesg;
    }
    
    public List getRemovedElements()
    {
        return Collections.unmodifiableList(removedEvents_);
    }
    
    public String getDiscardPolicyName()
    {
        return "TestDiscardPolicy";
    }
}