001/* NotificationEmitter.java -- Refined interface for broadcasters.
002   Copyright (C) 2006 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038package javax.management;
039
040/**
041 * Represents a bean that can emit notifications when
042 * events occur.  Other beans can use this interface
043 * to add themselves to the list of recipients of such
044 * notifications.
045 *
046 * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
047 * @since 1.5
048 */
049public interface NotificationEmitter
050  extends NotificationBroadcaster
051{
052
053  /**
054   * Removes the specified listener from the list of recipients
055   * of notifications from this bean.  Only the first instance with
056   * the supplied filter and passback object is removed.
057   * <code>null</code> is used as a valid value for these parameters,
058   * rather than as a way to remove all registration instances for
059   * the specified listener; for this behaviour instead, see the details
060   * of the same method in {@link NotificationBroadcaster}.
061   *
062   * @param listener the listener to remove.
063   * @param filter the filter of the listener to remove.
064   * @param passback the passback object of the listener to remove.
065   * @throws ListenerNotFoundException if the specified listener
066   *                                   is not registered with this bean.
067   * @see #addNotificationListener(NotificationListener, NotificationFilter,
068   *                               java.lang.Object)
069   */
070  void removeNotificationListener(NotificationListener listener,
071                                  NotificationFilter filter,
072                                  Object passback)
073    throws ListenerNotFoundException;
074
075}