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使用BPEL4WS设计业务流程的研究 总被引:5,自引:0,他引:5
首先介绍Web服务的概念、特点及其在商业应用中的不足,从而引出为什么要整合Web服务;接着介绍了BPEL4WS的概念以及它与Web服务的其它规范的关系;随后结合一个简单的例子,详细讲述了如何使用BPEL设计业务流程。 相似文献
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企业经营规模的不断扩大使得传统工作流系统不能适应企业分布式经营的需求,但却促进了基于WEB的工作流系统技术的发展,在此基础上提出了基于.NET3.0的WEB工作流系统,分析了工作流技术的工作原理,给出了工作流元素的相关定义,并在此基础上设计了系统的架构,最后实现了一个企业业务流程的实例。 相似文献
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EAI中基于工作流的业务过程定义 总被引:2,自引:0,他引:2
EAI的最高级形态即业务过程级的集成中,核心问题是对企业工作流的深刻理解与革新基础上对企业业务过程的抽象、定义与管理。本文简单介绍了EAI的概念,并结合典型系统INTERSTAGE CollaborationRing,重点对其中的工作流架构及其基础上的业务过程定义作了讨论。 相似文献
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Business Process Execution Language for Web Services (BPEL4WS) allows defining both, business processes that make use of Web services, and business processes that externalize their functionality as Web services. This short paper introduces the basic language elements of BPEL4WS using a simple example. The concepts underlying the language are briefly explained: establishing bilateral partnerships, correlating messages and processes, defining the order of the activities of a business process, event handling, handling exceptions via long-running transactions, and the usage of BPEL4WS in pure B2B scenarios. The paper finishes off by presenting the resulting application structure and the resulting economical implications. 相似文献
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对SOA中业务流程引擎按活动分解业务流程执行语言流程,针对此类活动封装到代理中时产生代理数量过多的情况,提出一个基于流程挖掘的智能流程分发方法,该方法能在3个方面提高系统的性能:改善业务流程在运行时的自适应性;根据检测相关性最强的活动封装到代理中选择最优代理;通过减少代理数量和改善代理信息的方式减少资源的使用。 相似文献
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基于补偿业务生成图的组合服务异常处理方法研究 总被引:3,自引:0,他引:3
为提高组合Web服务执行的一致性、可靠性,提出一种基于补偿业务生成图的组合服务异常处理方法.基于业务流程中任务间补偿依赖关系,讨论了补偿业务生成图的自动生成问题.重点讨论了补偿任务、补偿目标和服务转让应用模式,并相应地介绍了支持框架和相关技术.在此基础上设计了补偿依赖关系、补偿业务生成图的自动生成及组合服务执行过程中异常处理算法.当业务流程出现异常采取向前或向后恢复处理时,该方法在保证补偿实现的同时,兼顾补偿服务不存在或补偿服务代价过高的问题,提高了业务流程执行过程中的自动化水平和自适应能力.仿真结果证实,该方法保证了异常发生时组合服务执行的可靠性和一致性. 相似文献
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The web services paradigm provides organizations with an environment to enhance B2B communications. The aim is to create modularized services supporting the business processes within their organization and also those external entities participating in these same business processes. Current web service frameworks do not include the functionality required for web service execution performance measurement from an organization perspective. As such, a shift to this paradigm is at the expense of the organizations performance knowledge, as this knowledge will become buried within the internal processing of the web service platform. This research introduces an approach to reclaim and improve this knowledge for the organization establishing a framework that enables the definition of web services from a performance measurement perspective, together with the logging and analysis of the enactment of web services. This framework utilizes web service concepts, DSS principles, and agent technologies, to enable feedback on the organizations performance measures through the analysis of the web services. A key benefit of this work is that the data is stored once but provides information both to the customer and the supplier of a web service, removing the need for development of internal web service performance monitoring. 相似文献
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Walid Gaaloul Khaled Gaaloul Sami Bhiri Armin Haller Manfred Hauswirth 《Distributed and Parallel Databases》2009,25(3):193-240
A continuous evolution of business process parameters, constraints and needs, hardly foreseeable initially, requires a continuous
design from the business process management systems. In this article we are interested in developing a reactive design through
process log analysis ensuring process re-engineering and execution reliability. We propose to analyse workflow logs to discover
workflow transactional behaviour and to subsequently improve and correct related recovery mechanisms. Our approach starts
by collecting workflow logs. Then, we build, by statistical analysis techniques, an intermediate representation specifying
elementary dependencies between activities. These dependencies are refined to mine the transactional workflow model. The analysis
of the discrepancies between the discovered model and the initially designed model enables us to detect design gaps, concerning
particularly the recovery mechanisms. Thus, based on this mining step, we apply a set of rules on the initially designed workflow
to improve workflow reliability.
The work presented in this paper was partially supported by the EU under the SUPER project (FP6-026850) and by the Lion project
supported by Science Foundation Ireland under Grant No. SFI/02/CE1/I131. 相似文献
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基于SOA和BPEL构建销售管理系统 总被引:1,自引:0,他引:1
针对目前大多数汽车制造企业对业务流程敏捷化的需求,分析了面向服务架构SOA和业务流程执行语言BPEL的特点,提出了基于SOA和BPEL构建销售管理系统,将系统中的核心模块订单处理业务功能按基本服务、合成服务、组合服务进行了设计与实现,提高了系统业务流程的可重组性和可适应性. 相似文献
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为了使得语义Web服务的发现结果与服务请求者的意图更加一致,提高服务发现的准确性,改善服务发现和选择的自动化性能。在服务描述中增加了对于服务提供者和服务请求者的上下文知识的表示,使用规划的方法完成服务参与者之间对于私有的上下文本体概念意图的理解。实验表明,该方法能够有效提高发现的准确性,在使用标准服务测试集进行服务发现实验时,尽管概念规划使得服务发现时间有所增加,但服务发现的准确性得到很大提高,尤其对于描述服务领域本体语义差异较大的情况,服务发现的结果更为准确。 相似文献
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设计了一种基于工作流的语义Web服务组合系统框架,重点对工作流组合管理层的结构及运行原理进行了说明,对服务管理层中Web服务的注册、发布、组合和调用等实现机制进行了阐述。由此构建的系统能够自动地组合和调用Web服务。 相似文献
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一种基于Web服务的工作流过程模型 总被引:2,自引:0,他引:2
工作流管理系统实施是提高企业核心竞争力的有力措施,而工作流过程模型是整个工作流管理系统的基础,在Web服务的基础上提出了一种分层的过程模型,同时在过程模型中增加新的元素事务活动和事务节点,增加了模型对工作流管理系统的分布异构环境以及事务特性的支持. 相似文献
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Tomas Vitvar Adrian Mocan Mick Kerrigan Michal Zaremba Maciej Zaremba Matthew Moran Emilia Cimpian Thomas Haselwanter Dieter Fensel 《Service Oriented Computing and Applications》2007,1(2):129-154
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. 相似文献
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语义Web服务,作为本体技术与面向服务的体系架构的完美结合,已经成为语义Web和面向服务的软件工程的一个重要研究方向。OWL-S和WSMF等语义Web服务方法,为Web服务描述标准(WSDL),提供了基于本体的框架,从而实现服务的自动化发现、调用和组合。但基于原有语义Web服务方法,处理组合服务时,对子服务构件之间通信的建模缺乏实际意义上的语义。基于本体和P2P技术,建立一套通用的分布式的面向服务的体系结构——DisOntoSOA。DisOntoSOA不局限于任何一种编程语言和任何一种特定的Web服务技术。因此,只要是结合本体与SOA的方法,都适用于该体系。 相似文献