/* * Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.jmx.remote.internal; import java.util.Set;import javax.management.remote.NotificationResult;import javax.management.remote.TargetedNotification; /** A buffer of notifications received from an MBean server. */public interface NotificationBuffer {    /**     * <p>Fetch notifications that match the given listeners.</p>     *     * <p>The operation only considers notifications with a sequence     * number at least <code>startSequenceNumber</code>.  It will take     * no longer than <code>timeout</code>, and will return no more     * than <code>maxNotifications</code> different notifications.</p>     *     * <p>If there are no notifications matching the criteria, the     * operation will block until one arrives, subject to the     * timeout.</p>     *     * @param filter an object that will add notifications to a     * {@code List<TargetedNotification>} if they match the current     * listeners with their filters.     * @param startSequenceNumber the first sequence number to     * consider.     * @param timeout the maximum time to wait.  May be 0 to indicate     * not to wait if there are no notifications.     * @param maxNotifications the maximum number of notifications to     * return.  May be 0 to indicate a wait for eligible notifications     * that will return a usable <code>nextSequenceNumber</code>.  The     * {@link TargetedNotification} array in the returned {@link     * NotificationResult} may contain more than this number of     * elements but will not contain more than this number of     * different notifications.     */    public NotificationResult        fetchNotifications(NotificationBufferFilter filter,                           long startSequenceNumber,                           long timeout,                           int maxNotifications)            throws InterruptedException;     /**     * <p>Discard this buffer.</p>     */    public void dispose();}