/*
* Copyright 1999-2015 dangdang.com.
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* </p>
*/
package com.dangdang.ddframe.rdb.transaction.soft.tcc;
/**
* TCC工作流.
*
* @author zhangliang
*/
public enum TCCWorkflow {
/**
* 尝试执行业务.
*
* <p>完成所有业务检查(一致性)</p>
* <p>预留必须业务资源(准隔离性)</p>
*/
Try,
/**
* 确认执行业务.
*
* <p>真正执行业务</p>
* <p>不作任何业务检查</p>
* <p>只使用Try阶段预留的业务资源</p>
* <p>Confirm操作满足幂等性</p>
*/
Confirm,
/**
* 取消执行业务.
*
* <p>释放Try阶段预留的业务资源</p>
* <p>Cancel操作满足幂等性</p>
*/
Cancel
}