001/*
002 * HA-JDBC: High-Availability JDBC
003 * Copyright (C) 2012  Paul Ferraro
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Lesser General Public License as published by
007 * the Free Software Foundation, either version 3 of the License, or
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Lesser General Public License for more details.
014 *
015 * You should have received a copy of the GNU Lesser General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018package net.sf.hajdbc.distributed;
019
020/**
021 * Used to notify the implementor of changes to group membership.
022 * 
023 * @author Paul Ferraro
024 */
025public interface MembershipListener
026{
027        /**
028         * Indicates that the specified member was added to the group.
029         * @param member the added member
030         */
031        void added(Member member);
032        
033        /**
034         * Indicates the the specified member was removed from the group.
035         * @param member the removed member
036         */
037        void removed(Member member);
038}