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基于.NET平台和Web服务的工作流平台设计与实现 总被引:1,自引:0,他引:1
作为实现企业业务过程建模、管理与集成的核心技术,工作流技术不仅可以实现业务与运营流程的弹性转变,而且可以成为多种业务的整合桥梁。以一个大型集团公司的信息化现状为背景,分析工作流平台的业务背景和需求,提出了基于Web服务技术的分布式工作流平台的概念和解决方案。并结合实际的业务需求设计了该平台的数据模型、控制模型和服务接口,阐述了实现过程中的关键问题及解决办法。 相似文献
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在分析电子监察业务特点的基础上,设计了一种基于SOA云架构的电子监察业务平台。在平台底层采用云计算的虚拟化技术和分布式并行数据处理技术对平台涉及的海量异构资源进行统一而高效的管理,并向上层提供虚拟资源服务、监察业务核心功能开发环境和灵活可伸缩的海量异构数据处理能力;在平台中层采用SOA架构把业务核心逻辑、资源和数据封装为标准Web服务,实现单项监察业务元服务;在平台高层采用BPMS业务协作管理机制,把监察业务间的协作封装为Web服务,实现多项监察业务间的协作服务及相关组合服务。元服务、协作服务及组合服务由平台最高层的服务中心统一组织管理,供跨地域分布的各监察部门最终用户使用。 相似文献
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针对目前广域级的视频监控项目遇到的各种问题,设计了一种基于SOA架构和云计算技术的视频监控综合业务平台.采用云计算中的虚拟化技术对平台底层中多种异构软硬件资源进行整合管理,采用HDFS分布式文件系统和HBase分布式存储系统对海量视频数据进行高效的分布式存储管理,采用MapReduce分布式编程框架实现用户业务的分布式并行处理与资源调度.在此基础上,众多用户业务最终实现为云服务并在SOA架构下部署成为分布式系统,有效实现业务流程的整合及融合. 相似文献
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基于SOA的校园网运维平台 总被引:3,自引:1,他引:2
针对目前校园网络业务系统集成管理落后的问题,为提高校园网络服务质量和改进网络管理服务方式,提出了一种面向服务架构(SOA)的网络探测、拓扑发现以及可视化管理相结合的校园网络管理解决方案,设计并实现了一个校园网运维平台。该平台将网络管理功能抽象成服务,在中央服务器WSCS上发布,并且创新性地设计了一种易于拓展的分布式网络状态探测框架NSDI,实现了功能强大、界面友好的拓扑管理桌面程序TopoStudio。通过平台的设计与实现表明了解决方案的可行性。 相似文献
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基于SOA的软件开发是分布式异构软件系统构造方法和环境的新发展阶段。文章介绍了一种基于SOA的CBSD方法,提出一种基于业务的服务模型,阐述了服务构件的管理和信息交互方式。将业务提炼成服务构件和服务边界组件,用业务服务包重用的思想提出了一种基于服务边界组件的服务组装方法,解决了异构分布式环境下业务重组和软件重用的问题,用实例说明了该方法并进行了分析。 相似文献
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《Computers & Industrial Engineering》2005,49(2):287-317
Web services technology is being adopted as a viable deployment approach for future distributed software systems that enable business-to-business and business-to-consumer interactions across the open and dynamic internet environment. Recent research is focused on developing support technologies for web service discovery, on-demand service composition, and robust execution to facilitate web services based deployment of business processes. Developing techniques to cope with the volatile and open nature of the web during execution of composite services at the service platform is essential for delivering reliable and acceptable performance in this new process delivery framework. In this paper, we propose a simulation-based framework to guide scheduling of composite service execution. Online simulation of the dynamics of the open environment is used for scheduling service requests at the service platform. Comparison of the look-ahead simulation for different scheduling policies with the current execution state provides guidelines for service execution in order to cope with system volatility. We have implemented a prototype of the proposed framework and illustrate the feasibility of our approach with experimental studies. 相似文献
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分布式工作流执行服务的设计与实现 总被引:6,自引:0,他引:6
工作流执行服务的实现方案是实施工作流技术最为关键的一个方面,工作流管理系统的应用特点决定了它必须与各种分布的、异构的应用进行通信或与其集成。为了给用户提供透明的工作流执行服务而隐藏工作流执行服务实现的复杂性,文章提出了一种具有三层层次结构的工作流执行服务实现方案,其中的分布式通信服务层由通信中间件实现,使开发者无需关心程序间通信的复杂性,从而将精力放在解决业务问题和优化业务逻辑方面,提高了应用开发的效率。 相似文献
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Even though many IoT (Internet of Things) applications have been implemented based on distributed events, how to construct scalable IoT services is still unclear. In this paper, we first discuss representing physical entities as IoT resources in the cyber world and integrate them into IoT services and then use an event session mechanism to express the coordination logic in an IoT service system. Given their event‐driven models, the scalable IoT services are constructed through decoupling one service at behavior from others, where running atomic service instances with high concurrency is our first focus, and distributed execution of an IoT business process is our second focus. Our last focus is to make each distributed business process execution unit hold its properties in the whole process, which requires modeling the environment as a prerequisite to compute its properties, and some assume‐guarantee rules for composing the services from the environment's perspective. We then propose a platform to support the construction, where according to the behavior decoupling features, one IoT business process is decomposed into pieces of event composition logic and business computation logic, together with separating the data dependency of computation functions in each process fragment, such that it can be concurrently executed and distributed. A practical application is implemented to concept‐prove our work. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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Collaborative business processes, implemented and carried out via web services and enabling dynamic interaction among organizations, are becoming more indispensable to competitiveness in the global market. As dynamic collaboration prevails, the quality of service (QoS) of collaborative processes becomes more important. A critical requirement in cases where processes involve long-term activities is to guarantee successful completion within time constraints. In this study, we developed a methodology for dynamic planning of web service execution that imparts reliability to collaborative business processes. In order to ensure that processes successfully execute within time constraints and at minimum cost, the proposed method dynamically modifies execution plans at run-time by means of fault-tolerance techniques. Since generation of an execution plan of minimum cost while guaranteeing successful completion is classified as an NP-hard problem, a heuristic algorithm was developed. Additionally, to compare the proposed algorithm’s performance with those of the branch-and-bound method and the genetic algorithm (GA), a set of experiments was conducted. 相似文献
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Web服务的交互和实现被推荐通过软件代理来实现.Web服务目前还不能很好地支持动态、自适应的服务组合和分布式业务流程.软件代理在建模、知识表达和交互等技术上的优势,能够强化Web服务的交互和动态应用能力.基于代理和面向流程建模的BPEL4WS,可以实现Web服务面向业务应用的合成与执行,支持多个协同的业务流程及其动态配置.系统分析了代理、BPEL4WS和Web服务整合的技术与实现方案,利用JADE平台开发了相关的测试模型,并且以网上拍卖为案例,验证了所提方案及实现. 相似文献
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为了解决硬件资源难以满足WebGIS信息增长的需求,提出了ArcGIS Server分布式技术实现企业级GIS应用程序的综合平台.使用WebService技术,在业务逻辑层和空间信息层加入分布式处理服务器,能够真正实现WebGIS系统逻辑上和物理上的分布式处理服务.采用Web Service技术和ArcServer技术可以将信息量巨大的WebGIS系统分解成多个Web Service的分布式服务,从而解决硬件资源上的问题,同时对ArcGIS Server的性能进行最小的服务器资源占用率、最小化的数据传输量、最合适的图像格式和最佳的代码执行效率的优化,提升整个系统的性能. 相似文献