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 020import java.io.IOException; 021import java.io.ObjectInput; 022import java.io.ObjectOutput; 023 024/** 025 * Used by the command dispatcher to handle state transfer between members. 026 * 027 * @author Paul Ferraro 028 */ 029public interface Stateful 030{ 031 /** 032 * Returns the state of this object. 033 * @param input 034 * @throws IOException 035 * @throws ClassNotFoundException 036 */ 037 void readState(ObjectInput input) throws IOException, ClassNotFoundException; 038 039 /** 040 * Sets the state of this object. 041 * @param output 042 * @throws IOException 043 */ 044 void writeState(ObjectOutput output) throws IOException; 045}