一种将业务规则与BPEL有效集成的方法

业务规则是定义和约束企业业务结构与业务行为的规定或规范，是企业业务运作和管理决策所依赖的重要资源。当前，面向服务的计算变得越来越流行，Web services已经成为集成互联网上分布和异构应用程序的通用技术。使用Web服务合成语言BPEL可以将不同服务提供者提供的服务整合成新的服务。然而，这种基于流程的合成语言缺乏在合成过程中使用由不同的业务规则引擎管理的业务规则的能力。因此提出了一种将业务规则与BPEL集成的方法。     

Semantically-enabled service oriented architecture : concepts, technology and application

Semantically enabled service-oriented architecture focused on principles of service orientation, semantic modeling, intelligent and automated integration defines grounds for a cutting-edge technology which enables new means to integration of services, more adaptive to changes in business requirements which occur over systems’ lifetime. We define the architecture starting from a global perspective and through Web service modeling ontology as its semantic service model we narrow down to its services, processes and technology we use for the reference implementation. On a B2B integration scenario we demonstrate several aspects of the architecture and further describe the evaluation of the implementation according to a community-agreed standard evaluation methodology for semantic-based systems.     

Web services: been there, done that?

Web services can be defined as loosely coupled, reusable software components that semantically encapsulate discrete functionality and are distributed and programmatically accessible over standard Internet protocols. Web services have received a lot of hype, the reasons for which are not easily determined. Some of their benefits might even seem to waste away, once we touch on the nitty-gritty details, because Web services per se do not offer a solution to underlying problems. The contributions included in this section delve into some of these issues, including: pitfalls of workflow issues; structuring procedural knowledge into problem-solving methods; discussing how a low initial entry barrier and simple technology are balanced against the long-term goal of easy integration; including semantics in a Web service modeling framework; and building on new kinds of applications such as grid enterprises.     

支持动态应用集成的Web Service语义描述模型

随着B2B应用和电子商务的发展,应用系统要求在因特网环境下能够依据新的需求,快速、灵活地集成各种已有的和新添置的业务应用系统。文章通过扩展现有的WebService描述规范提出了一种支持WebService语义描述的服务资源模型,并在其基础上,通过和基于工作流的服务组合模型的结合,实现了在因特网环境下运行时的动态查找、绑定和调整的服务中介机制,有效地支持WebService的动态组合与协调     

XML-based specification for Web services document security

The Internet and related technologies have seen tremendous growth in distributed applications such as medicine, education, e-commerce, and digital libraries. As demand increases for online content and integrated, automated services, various applications employ Web services technology for document exchange among data repositories. Web services provide a mechanism to expose data and functionality using standard protocols, and hence to integrate many features that enhance Web applications. XML, a well-established text format, is playing an increasingly important role in supporting Web services. XML separates data from style and format definition and allows uniform representation, interchange, sharing, and dissemination of information content over the Internet. XML and Web services provide a simplified application integration framework that drives demand for models that support secure information interchange. Providing document security in XML-based Web services requires access control models that offer specific capabilities. Our XML-based access control specification language addresses a new set of challenges that traditional security models do not address.     

一种传感器网络应用的面向服务体系结构

为了解决传感器网络和Internet之间的互联以及应用问题,提出了面向服务的体系结构。该体系结构将传感器网络应用的接口和交互作为一种网页服务进行封装。这样用户可以通过HTTP来查找、定位和唤醒这些服务。将传感器网络按功能分为核心服务集合和辅助服务集合。通过应用层的接口来调用传感器网络的功能,为应用开发者提供一个统一的标准,不需要考虑底层的实现,加强了应用开发的通用性和开发速度。描述了该体系结构的实验环境,并与典型应用场景相结合,融合核心服务和辅助服务。研究显示,该体系结构可以促进传感器网络应用的快速发展,有着广阔的发展前景。     

基于软件代理和上下文的Web服务合成方法

Web服务的诸多特性使得它非常适合于商务应用集成，工业界和学术界都希望能够通过合成多个Web服务从而获得增值的新服务。介绍两个概念以减少Web服务合成的复杂性：软件代理和上下文；并论述了在合成期间，软件代理之间进行会话以同意Web服务参与到合成中。     

Web Services在B2B集成中的应用

介绍了Web Services技术，Web Services在实现真正的跨语言、跨平台．跨企业的集成中是非常重要的。着重分析了采用Web Services技术为实现B2B集成带来的优势，并结合具体项目实现B2B集成，讨论了Web Services技术在B2B集成系统中的具体应用方法。     

Taking steps to secure Web services

Despite the promise, Web services present network administrators with a thorny problem: as network security becomes an increasing concern, Web services open up networks by letting outside users access databases, applications, and internal users. Traditional security techniques - such as virtual private networks or secure sockets layer (SSL) technology - cannot secure the large number of transactions that Web services can perform in a short time. Meanwhile, basic Web services transactions are unencrypted and unsecured, which creates the potential for disaster. It is thus important for Web services technology to have its own security mechanisms. In fact, industry observers have said the biggest obstacle to wider adoption of Web services has been security concerns. With this in mind, researchers are developing and implementing several Web services security approaches.     

An experience report on developing an automated web services platform

Web services have attracted significant industry interest as a low-cost and flexible technology alternative to distributed object and proprietary message-oriented methods for delivery of on-demand business processes, enabling intra-organizational systems integration, and in the long term, development of dynamic inter-organizational process networks that may revolutionize B2C and B2B e-commerce. Exploiting this latent potential of web services technology requires the development of automated techniques for scalable and reliable service composition and execution in web service platforms. In this paper, we summarize our experience in developing an architectural framework for web services platforms, called Integrated Service Planning and Execution architecture (ISP & E). The use of recent advances in AI planning, learning and semantic web technologies for service composition, reliable service execution, transaction synthesis, and model-driven deployment of services is discussed. Furthermore, we discuss implications for and research issues in the development of web services based systems to aid e-business.     

Extensible soft semantic web services agent

Web services technology is critical for the success of business integration and other application fields such as bioinformatics. However, there are two challenges facing the practicality of Web services: (a) efficient location of the Web service registries that contain the requested Web services and (b) efficient retrieval of the requested services from these registries with high quality of service (QoS). The main reason for this problem is that current Web services technology is not semantic-oriented. Several proposals have been made to add semantics to Web services to facilitate discovery and composition of relevant Web services. Such proposals are being referred to as semantic Web services (SWS). However, most of these proposals do not address the second problem of retrieval of web services with high QoS. In this paper, we propose a framework called soft semantic Web services agent (soft SWS agent) for providing high QoS Semantic Web services using soft computing methodology. Since different application domains have different requirement for QoS, it is impractical to use classical mathematical modeling methods to evaluate the QoS of semantic Web services. We use fuzzy neural networks with Genetic Algorithms (GA) as our study case. Simulation results show that the soft computing methodology is practicable to handle fuzzy and uncertain QoS metrics effectively.     

Integrating AJAX and Web Services for Cooperative Image Editing

AJAX (asynchronous JavaScript and XML) is a powerful Web development model for browser-based Web applications. While Web services essentially are universally accessible software components deployed on the Web and designed to support interoperable machine-to-machine interaction over a network. Because technologies that support both AJAX and Web services are XML-based, the two can leverage each others' strengths. More and more companies and organizations are taking advantage of this relationship, working to improve their Web applications through AJAX and Web services. Our system integrates the two for Web-based cooperative image editing. For message exchange delays and browser security limitations have hampered Web-based cooperative image editing. This integration resolves these issues and offers a framework for generic cooperative business processes     

Web服务业务流程规范的比较研究

随着XML和WebService技术的逐步成熟,流程层集成成为主流的企业应用集成(EAI)方式,而Web服务业务流程规范是流程层集成的基础。因此该文对典型的Web服务业务流程规范进行了介绍、比较和分析,并讨论了现有Web服务业务流程规范存在的主要问题以及今后的发展趋势。     

Managing Information for Effective Business Partner Relationships

Partner Relationship Management (PRM) is an information strategy that employs a set of applications focused on directly impacting an enterprise and its business partners' sales and services. Web services employ a distributed computing architecture that consists of many different computers that communicate over the Internet to form one system. the communication standards and protocols used in Web services are universally accepted. These Web services can be requested by client applications: Web based, windows, or mobile devices. This article presents an overview of PRM and Web services, and discusses the potential for improving partner relationship processes through the use of Web services.     

基于消息机制的异构系统集成方案

Web服务技术可以为异构系统集成提供有力支持,但在异步调用、流程控制和事务处理等方面仍然存在许多困难。提出了基于消息机制的异构系统集成方案,设计了总线型消息控制平台,通过基于XML的格式化消息提升系统集成的能力,并在数字化校园建设中得到了应用。     

基于Internet工作流的复合Web服务框架

实现灵活方便的企业业务集成一直是信息领域的核心问题，也是B2B电子商务应用的关键．为此将Web服务和传统的工作流技术相结合，设计并实现了支持复合Web服务运行和管理的框架WSFlow．给出了WSFlow的总体结构，描述了其中的关键技术，包括Web服务与工作流活动的动态配置和绑定技术，复合Web服务流程的动态修改以及复合Web服务的运行监控等技术．     

A semantical framework to engineering WSBPEL processes

Web services promise the interoperability of various applications running on heterogeneous platforms over the Internet, and are gaining more and more attention. Web service composition refers to the process of combining Web services to provide value-added services, which has received much interest in supporting enterprize application integration. Industry standards for Web Service composition, such as WSBPEL, provide the notation and additional control mechanisms for the execution of business processes in Web service collaborations. However, these standards do not provide support for checking interesting properties related to Web Service and process behavior. In an attempt to fill this gap, we describe a formalization of WSBPEL business processes, that adds communications semantics to the specifications of interacting Web services, and uses a formal logic to model their dynamic behavior, which enables their formal analysis and the inference of relevant properties of the systems being built.     

基于InterOP Stack的新一代平台互操作技术

介绍了Internet上平台互操作的最新技术：InterOP Stack技术家族。InterOP Stack主要是为解决目前B2B全球体系进程中遇到的最大问题：集成和交互。InterOP Stack 利用Internet系统交互的标准技术XML，在其之上定义了模块接口和平台服务的标准界面，使得B2B服务的全球集成成为可能。而基于InterOP Stack技术而构建的B2B应用称为Web Service。     

基于Web Service进行信息共享和集成的关键技术

由于Web Service是基于标准协议和规范(包括HTTP、SOAP、XML、WSDL、UDDI等),并且平台独立和语言独立的,因此Web Service已成为基于Internet网进行信息交换、信息共享、信息集成和互操作的主流技术,在电子商务和电子政务中被广泛应用.详细介绍了基于Web Service进行信息共享和集成的关键技术--Web Service异步调用技术和动态调用技术.通过Web Service异步调用技术,实现了Web Service的分布式并行执行,提高了计算的效率.通过Web Service动态调用技术,使整个软件系统具有可扩充性,并且易于维护,能满足Internet环境动态性的要求.