/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. 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.
*
* 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.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
package org.opencloudb.server;
import org.opencloudb.net.FrontendConnection;
import org.opencloudb.route.RouteResultset;
/**
* @author mycat
*/
public interface Session {
/**
* 取得源端连接
*/
FrontendConnection getSource();
/**
* 取得当前目标端数量
*/
int getTargetCount();
/**
* 开启一个会话执行
*/
void execute(RouteResultset rrs, int type);
/**
* 提交一个会话执行
*/
void commit();
/**
* 回滚一个会话执行
*/
void rollback();
/**
* 取消一个正在执行中的会话
*
* @param sponsor
* 如果发起者为null，则表示由自己发起。
*/
void cancel(FrontendConnection sponsor);
/**
* 终止会话，必须在关闭源端连接后执行该方法。
*/
void terminate();
}