package org.jacorb.notification.queue;
/*
* 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.
*
*/
import org.jacorb.notification.interfaces.Message;
/**
* Note that the methods do not need to be thread-safe. this causes no problem as the methods are not
* intended to be directly called by clients. instead the superclass implements the interface
* EventQueue and invokes the methods thereby synchronizing access.
*
* @author Alphonse Bendt
*/
public class BoundedPriorityEventQueue extends AbstractBoundedEventHeap
{
public BoundedPriorityEventQueue(int maxSize, EventQueueOverflowStrategy overflowStrategy)
{
super(maxSize, overflowStrategy, new Object(), QueueUtil.DESCENDING_PRIORITY_COMPARATOR);
}
public String getOrderPolicyName()
{
return "PriorityOrder";
}
protected Message getEarliestTimeout()
{
return removeFirstElement(QueueUtil.ASCENDING_TIMEOUT_COMPARATOR);
}
protected Message getOldestElement()
{
return removeFirstElement(QueueUtil.ASCENDING_INSERT_ORDER_COMPARATOR);
}
protected Message getYoungestElement()
{
return removeFirstElement(QueueUtil.DESCENDING_INSERT_ORDER_COMPARATOR);
}
protected Message getLeastPriority()
{
return removeFirstElement(QueueUtil.ASCENDING_PRIORITY_COMPARATOR);
}
}