/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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 * its licensees as provided above.  However, if you add GPL Version 2 code
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/*
 * $Header: /cvs/glassfish/appserv-api/src/java/com/sun/appserv/management/helper/NotificationServiceHelper.java,v 1.2 2007/05/05 05:30:50 tcfujii Exp $
 * $Revision: 1.2 $
 * $Date: 2007/05/05 05:30:50 $
 */
package com.sun.appserv.management.helper;

import java.util.Map;

import javax.management.Notification;

import com.sun.appserv.management.base.NotificationService;

/**
	Helps make it easier to get Notifications from a NotificationService
 */
public final class NotificationServiceHelper
{
	final NotificationService	mProxy;
	final Object					mBufferID;
	long							mNextSequenceNumber;
	
		public
	NotificationServiceHelper(
		final NotificationService	proxy,
		final Object					bufferID )
	{
		mProxy				= proxy;
		mBufferID			= bufferID;
		
		mNextSequenceNumber	= 0;
	}
	
	
		public NotificationService
	get()
	{
		return( mProxy );
	}
	
	/**
		Get any outstanding Notifications and return them.
	 */
		public Notification[]
	getNotifications()
	{
		final Map<String,Object>	result	=
			mProxy.getBufferNotifications( mBufferID, mNextSequenceNumber);
		
		final Long	nextSequenceNumber	= (Long)
			result.get( mProxy.NEXT_SEQUENCE_NUMBER_KEY );
		mNextSequenceNumber	= nextSequenceNumber.longValue();
		
		final Notification[]	notifs	=
			(Notification[])result.get( mProxy.NOTIFICATIONS_KEY );
		
		return( notifs );
	}
}