• Title/Summary/Keyword: Web Service Orchestration

Search Result 12, Processing Time 0.025 seconds

A Hybrid Service Orchestration Framework based on BPEL4WS

  • Kim, Sung-Min
    • Journal of information and communication convergence engineering
    • /
    • v.7 no.3
    • /
    • pp.253-257
    • /
    • 2009
  • As the value of B2B integration gets more importance and the business process becomes more complex, BPEL4WS standard has been focused for the solution of the problems which is based on web service technology. Many vendors implement the standard in their systems to integrate B2B and web service based inner-Enterprise Application(EA)s. But there is no way to use the standard to integrate non-web service based EAs, because the standard is designed only for Service Oriented Architecture (SOA) over web services. This paper proposes Hybrid Service Orchestration Framework to participate web services and also non-web service based EAs in the business process as a partner using BPEL4WS standard. The framework introduces Hybrid Service Architecture to represent non-web service based EAs as a service, so BPEL4WS could be used to integrate web services and non-web service based EAs. And the framework also introduces Hybrid Service Toolkit to support software level facilities. The paper also introduces Hybrid Orchestration System that is based on Hybrid Service Orchestration Framework.

WORKGLOW: A P2P-based Web Service Orchestration Supporting Complex Workflow Patterns (복잡한 워크플로우 패턴들을 지원하는 P2P 기반 웹 서비스 오케스트레이션)

  • Tran, Doan Thanh;Hoang, Nam Hai;Choi, Eun-Mi
    • Journal of the Korea Society for Simulation
    • /
    • v.16 no.4
    • /
    • pp.77-86
    • /
    • 2007
  • Web services are considered as the critical component in the business plans of corporations as they offers the potential for creating highly dynamic and versatile distributed applications that span across business boundaries. Web Service Orchestration studies composition of already-existing web services to create new value-added services. The composite web services could be executed in a centralized or peer-to-peer(P2P) orchestration model. Compared with centralized-orchestration model, the P2P-based orchestration model provides better scalability, reliability, and performance for the overall services. However, recent P2P-orchestration solutions have limitation in supporting complex workflow patterns. Therefore, they could not effectively handle sophisticated business workflow, which contains complex workflow patterns. In this paper, we propose the WORKGLOW system, which can deal with complex workflow patterns while it is able to perform composite services in P2P orchestration manner. Comparing with centralized orchestration systems, the WORKGLOW brings up more business logic advantages, better performance, and higher flexibility with only a little overhead.

  • PDF

A Dynamic Web Service Orchestration and Invocation Scheme based on Aspect-Oriented Programming and Reflection (관점지향 프로그래밍 및 리플렉션 기반의 동적 웹 서비스 조합 및 실행 기법)

  • Lim, Eun-Cheon;Sim, Chun-Bo
    • Journal of the Korea Society of Computer and Information
    • /
    • v.14 no.9
    • /
    • pp.1-10
    • /
    • 2009
  • The field of the web service orchestration introduced to generate a valuable service by reusing single services. Recently, it suggests rule-based searching and composition by the AI (Artificial Intelligence) instead of simple searching or orchestration based on the IOPE(Input, Output, Precondition, Effect) to implement the Semantic web as the web service of the next generation. It introduce a AOP programming paradigm from existing object-oriented programming paradigm for more efficient modularization of software. In this paper, we design a dynamic web service orchestration and invocation scheme applying Aspect-Oriented Programming (AOP) and Reflection for Semantic web. The proposed scheme makes use of the Reflection technique to gather dynamically meta data and generates byte code by AOP to compose dynamically web services. As well as, our scheme shows how to execute composed web services through dynamic proxy objects generated by the Reflection. For performance evaluation of the proposed scheme, we experiment on search performance of composed web services with respect to business logic layer and user view layer.

A Study on Supporting Process-Centric Dynamic Engineering Web Services (프로세스 중심의 동적 엔지니어링 웹서비스 지원 방법에 대한 연구)

  • Lee J. Y.;Yoon J.H.;Lee S.J.;Kim H.;Kim K.S.
    • Korean Journal of Computational Design and Engineering
    • /
    • v.9 no.4
    • /
    • pp.361-372
    • /
    • 2004
  • Collaborative and distributed engineering web services are emerging as a viable alternative to the traditional design and engineering process automation. Existing approaches have limitations in supporting long-running engineering transactions, automatic engineering process orchestration and choreography, synchronous and asynchronous conversation, and geometric abstraction for transmission and sharing. In this paper, we present a process-centric engineering web service methodology to overcome these limitations by utilizing BPEL-based (Business Process Execution Language) process templates and coordination broker-based conversation support. This paper discusses the synchronization of engineering web services which can be either peer-centric or process-centric to support long-running engineering transactions and conversation. The process orchestration and choreography broker works as a service dispatching and aggregation mediator for executing process templates, which enables the individual activity or the engineering process to dynamically select and invoke one of the alternative web services through the run-time process brokering. Further, the paper presents how to support collaboration over the running process using conversation policy.

A SOA Web Service Implementation for Adapting to Context Changes using Polymorphism (상황정보 적응을 위하여 다형성을 이용한 SOA 웹서비스 구현 방안)

  • Yoon, Hoi-Jin
    • Journal of Internet Computing and Services
    • /
    • v.9 no.5
    • /
    • pp.73-83
    • /
    • 2008
  • This paper proposes an implementation of an orchestration service of web services, which work as context aware applications in Ubiquitous Computing. The proposed method alms to decrease the cost of adapting to the context changes. UC requires the context adaptation more than any other computing environments, and it works based on networks of various heterogeneous platforms. Web services on SOA could be one of the solutions for the requirements. This paper proposes the way how to implement an orchestration service of SOA to handle the context adaptation while keeping the performance high. We develops an implementation model of orchestration services of web services, and the model decreases the number of code lines of the orchestration service. This paper also shows a simple empirical study, and it also analyzes two different method implementing the polymorphism, overloading and overriding.

  • PDF

Design and Implementation of Personalized IoT Service base on Service Orchestration (서비스 오케스트레이션 기반 사용자 맞춤형 IoT 서비스의 설계 및 구현)

  • Cha, Siho;Ryu, Minwoo
    • Journal of Korea Society of Digital Industry and Information Management
    • /
    • v.11 no.3
    • /
    • pp.21-29
    • /
    • 2015
  • The Internet of Things (IoT) is an Infrastructure which allows to connect with each device in physical world through the Internet. Thus IoT enables to provide meahup services or intelligent services to human user using collected data from those devices. Due to these advantages, IoT is used in divers service domains such as traffic, distribution, healthcare, and smart city. However, current IoT provides restricted services because it only supports monitor and control devices according to collected data from the devices. To resolve this problem, we propose a design and implementation of personalized IoT service base on service orchestration. The proposed service allows to discover specific services and then to combine the services according to a user location. To this end, we develop a service ontology to interpret user information according to meanings and smartphone web app to use the IoT service by human user. We also develop a service platform to work with external IoT platform. Finally, to show feasibility, we evaluate the proposed system via study.

A Framework for Supporting Virtual Engineering Services Using Ubiquitous and Context-Aware Computing (가상공학 서비스를 위한 유비쿼터스 및 상황인식 컴퓨팅 프레임워크)

  • Seo D.W.;Kim H.;Kim K.S.;Lee J.Y.
    • Korean Journal of Computational Design and Engineering
    • /
    • v.10 no.6
    • /
    • pp.402-411
    • /
    • 2005
  • Context-aware engineering services in ubiquitous environments are emerging as a viable alternative to traditional engineering services. Most of the previous approaches are computer-centered rather than human-centered. In this paper, we present a Ubiquitous and Context-Aware computing Framework for collaborative virtual Engineering $(U-CAF\acute{E})$ services. The proposed approach utilizes BPEL-based (Business Process Execution Language) process templates for engineering service orchestration and choreography and adopts semantic web-based context-awareness for providing human-centered engineering services. The paper discusses how to utilize engineering contexts and share this knowledge in support of collaborative virtual engineering services and service interfaces. The paper also discusses how Web services and JINI (Java Intelligent Network Infrastructure) services are utilized to support engineering service federations and seamless Interactions among persons, devices, and various kinds of engineering services.

Device Objectification and Orchestration Mechanism for IoT Intelligent Service (IoT 서비스 지능화를 위한 디바이스 오브젝트화 및 오케스트레이션 메커니즘)

  • Kim, Youngjun;Jeon, Yongkeun;Chong, Ilyoung
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.38C no.1
    • /
    • pp.19-32
    • /
    • 2013
  • This paper suggests smart gateway structure and functionalities that provide device web service which can be used by user using objectified devices. The smart gateway objectify a physical device in other to provide the device web service in IoT intelligent service. And the paper suggests a mechanism that provide orchestrated service of various devices to user using a concept of service overlay network. and also suggests a interface that provide device web services and the orchestrated service between the smart gateway and a web service platform. In the paper, the objectified devices can be combined with web service objects and device contexts based on the service overlay network, furthermore the objectified devices can provide intelligence and dynamic service in the IoT environment.

An Application Framework for Component Based WebService (컴포넌트 기반 웹서비스를 위한 어플리케이션 프레임워크)

  • Lee, Yong-Hwan;Min, Dug-Ki
    • 한국IT서비스학회:학술대회논문집
    • /
    • 2005.11a
    • /
    • pp.536-542
    • /
    • 2005
  • 기업의 Business Process가 복잡해지고 B2B가 증가로 인하여 기업 내 혹은 기업간 Business Process를 통합하고 자동화하여 효율적으로 업무를 처리할 때 SOA 기반의 비즈니스 프로세스의 통합 툴의 필요하다. 본 논문에서는 재 사용성과 변경 용이성을 위해 개발한 다양한 업무 EJB 컴포넌트 형태들을 서비스 기반 아키텍처 상으로 전환하기 위한 서비스 기반 애플리케이션 개발 프레임워크를 제시한다. 제시한 서비스 기반 프레임워크는 기존 CBD 기반 업무 컴포넌트를 웹 서비스로 전환하기 위한 자동화 툴뿐만 아니라 웹서비스와 EJB까지 포함한 형태로 복합 어플리케이션을 개발할 수 있는 Orchestration Server까지 포함하고 있다.

  • PDF

Concept-based Orchestration Using eXtended-Object Thesaurus(XOT) in Web Service Environment (웹 서비스 환경에서 확장 객체 기반 시소러스를 이용한 개념 기반 오케스트레이션)

  • Jo, Ho-Sang;Yang, Jae-Dong
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2012.04a
    • /
    • pp.275-278
    • /
    • 2012
  • 웹 서비스는 SOA를 웹 상에서 구현한 기술로, 서비스들간의 느슨한 결합을 실현함으로써 재사용 가능한 서비스들의 활용을 극대화 한다. 본 논문에서는 확장 객체 기반 시소러스(eXtended Object-based Thesaurus, XOT)를 사용하여 적응 가능한 오케스트레이션 명세가 가능한 개념 기반 오케스트레이션 기법을 제안한다. XOT는 재사용 가능한 서비스들이 속하는 범주들을 개념으로 표현하고 상호 합성 패턴 관계를 포함한 개념간 상관 관계를 명시한 일종의 지식베이스이다. 이 기법은 오케스트레이션에 참여하는 복합 서비스를 포함한 여러 다양한 서비스들을 구체적으로 명세하는 대신 XOT 내의 개념들로 변수화 하고, 이들을 오케스트레이션 시 적절한 재사용 가능한 서비스 또는 구성 서비스들의 조합으로 대체시킴으로써 서비스들의 재사용성을 획기적으로 개선할 수 있다.