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}