原子事务

本文详细分析了这些协议，并且设计了Web服务原子事务和业务活动的原型架构，给出了具体的实现。

In this paper , the author analyzes these specifications in detail , designs prototype and frameworks for web services atomic transaction and business activity and provides concrete implementation .

服务器端API还包括一个操作，用于显式地将任意的读和写操作序列包装为单个原子事务。

The server-side APIs also include an operation for explicitly bracketing an arbitrary sequence of read and write operations into a single atomic transaction .

从传统事务到Web服务原子事务的映射

Mapping from classical transactions to Web Services Atomic Transactions

基于多元π演算的Web服务原子事务协议研究

On atomic transaction protocol of Web services based on polyadic π - calculus

原子事务：web服务上的操作或者全部发生，或者根本不发生。

Atomic Transactions : application operations on web services occur completely or not at all .

大多数人可能不会直接使用定义在Web服务协调和Web服务原子事务中的各种功能。

Most people will probably not directly use the various features defined in WS-C and WS-AT .

Web服务原子事务

Web service atomic transactions

最后通过测试，从而验证了Web服务事务处理模型具备处理原子事务和业务事务的能力。

Finally , it is tested to verify that the model can handle atomic transactions and business activity .

文章用两个章节介绍WebServices的高级应用：实现了系统中的WebServices安全和WebServices原子事务，真正实现了商业级WebServices的应用。

Especially , this dissertation focuses on the high level application of Web Services , which are WS-Security and WS-Atomic Transaction .

应用程序使用定义在Web服务原子事务的完成协议（CompletionProtocol）来指出它希望提交事务。

The application uses the Completion Protocol defined in WS-AtomicTransaction to indicate that it wishes to commit the transaction .

WS原子事务和WS协作都是web服务的基础，但是它们的性能都很差。

WS-Atomic Transaction and WS-Coordination are web services based but they have poor performance .

事务（原子事务、补偿、Web服务事务（WS-Transaction））

Transactions ( Atomic transactions , Compensation , WS-Transaction )

WebSphereApplicationServer中的WS-BA支持使得不同系统上的Web服务能够协调比原子事务耦合得更松散的活动。

WS-BA support in WebSphere Application Server enables Web services on disparate systems to coordinate activities that are more loosely coupled than atomic transactions .

WS-Transaction规范描述了两种协调类型，一种是原子事务（atomictransaction，AT），另一种是业务活动（businessactivity，BA）。

The WS-Transaction specification describes two coordination types , one called atomic transaction ( AT ) and the other called business activity ( BA ) .

WS-Transaction指定的协议可用于BPEL中定义的长期运行的事务模型和一般的Web服务间的原子事务。

WS-Transaction specifies a protocol for the long running transaction model defined in BPEL as well as atomic transactions between regular web services .

未来的BPEL扩展可能支持由单个流程或多个不同流程的活动所组成的分布式原子事务。

A future extension of BPEL may support distributed atomic transactions consisting of activities of a single process or even of different processes .

从传统的到Web服务事务有相对直接的映射，我们映射Web服务原子事务的Durable2PC变体作为例子。

There is a relatively straightforward map from classic to web services transactions and we mapped the Durable2PC variety of Web Services Atomic Transaction as an illustration .

IBM、微软等公司在近几年连续推出了有关Web服务的事务规范，包括Web服务原子事务规范、Web服务业务活动规范等，但是这些规范中制定的规则是泛化的，实现起来比较困难。

Some transaction specifications concerning web services , including web services atomic transaction and business activity specification , were released in recent years by IBM and Microsoft etc. But it is difficult to realize all the rules in these specifications .

有了BPEL，您就可以使用活动来封装各个流程步骤的原子事务，从而描述业务事务的长时间运行且多步骤的流程。

With BPEL , you can describe a long-running , multistep process of a business transaction using activities to encompass atomic transactions for individual process steps .

此规范提供了原子事务协调类型的定义，将与WS-Coordination规范中描述的可扩展协调框架一起使用。

This specification provides the definition of the atomic transaction coordination type that is to be used with the extensible coordination framework described in the WS-Coordination specification .

用于原子事务的协议处理短期存在的活动。

The protocols for atomic transactions handle activities that are short-lived .

事务属性只能应用于原子事务作用域一次

Transaction attribute can only be applied to Atomic Transaction Scopes once

指明原子事务的事务隔离级别。

Indicates the transaction isolation level of the atomic transaction .

人们常把原子事务看作是提供了一种两阶段提交协议。

Atomic transactions are often referred to as providing a two-phase commitment protocol .

基于原子事务组的备份方案的研究与设计

Backup Solution Based on Atomic Transaction Group

指明此作用域是原子事务、长期的还是非事务性的。

Indicates that this scope is an atomic transaction , long running , or is non-transactional .

在传统备份操作的基础上，提出并实现了原子事务组的概念。

Atomic Transaction Group is brought forward and implemented on the basis of operations by conventional backup .

例如，短期运行的原子事务可以成为长期运行的业务事务的一部分。

For example , short running atomic transactions can be part of a long running business transaction .

您可以希望在支持原子事务的环境中使用这两个协议。

These are both protocols that you might wish to use in an environment that supports atomic transactions .

原子事务一般持续时间较短，通常要求参与者之间具有很高级别的信任。

Atomic transactions are typically short in duration and commonly require a high level of trust between participants .