• Journal of Information Technology Services
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• v.5 no.2
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• pp.107-123
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• 2006

The objectives of this study is to develop a strategy for the adoption of BPM(Business Process Management) standards and an implementation guideline of the BPM standard for BPM solution developers focusing on BPEL(Business Process Execution Language) which is regarded as the most important BPM standard. In the heterogeneous and distributed IT environments, every type of enterprise software requires standards to enhance interoperability. BPMS(Business Process Management System), which is a type of enterprise software requires BPM standards such as BPEL(Business Process Execution Language), BPMN(Business Process Modeling and Notation), BPQL(Business Process Query Language) and so on to achieve multi-system interoperability and component interoperability with their BPM solutions. It is quite helpful to provide the adoption strategy concerning BPM standards for each type of BPM solution vendors who need the BPM standards. Since the BPEL is conceived as the most important BPM standard and widely adopted by many BPM vendors, we have proposed a reference architecture for BPEL implementation and also developed the detail implementation guideline of core components of the BPM system supporting the BPEL standard. Using the strategy and implementation guideline proposed in this work, BPM solution vendors can establish their own standard adoption strategy and they can also develop their BPM solutions supporting the BPM standards more efficiently.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.5 no.10
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• pp.1841-1861
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• 2011

The advance in Service-Oriented Architecture (SOA) and web services has led to the development of new types of a system in which heterogeneous service components can connect and compose to solve a complex business problem. In the SOA, even though these service components are valid in their functionality, there is a need to test their behaviors when those services are composited. In recent years, WS-BPEL has received a wide acceptance as a means of integrating distributed service components. To test the composite service, the existing testing techniques have been focused on the functional features based on the WS-BPEL process. However as SOA approach is applying to real-time software development, the performance of composite service becomes one of important issues. This paper proposes a technique to the performance testing of a composite service with WS-BPEL extension which combined with the concept of aspect. Our WS-BPEL extension has been made towards annotating aspect component which is measuring the response time of the composite service. This paper also explains the procedure of performance testing with on-line transaction system. Our technique can apply to choose an adequate component in service composition with considering the performance among several candidate web service components.

• Journal of KIISE:Software and Applications
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• v.36 no.10
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• pp.800-815
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• 2009

Recently, Web services based service-oriented architecture is widely used to integrate effectively various applications distributed on the networks. In the service-oriented architecture BPEL as a standard modeling language for the business processes provides the way to integrate various services provided by applications. Over the past few years, some types of studies have been made on testing compatibility of services and on discriminating and tracing of the business processes in the services composition. Now a lot of studies about the services composition with BPEL are going on. However there were few efforts to solve the problems caused by the services composition. Especially, there is no effort to evaluate whether a composite service is reliable and whether it is robust against to exceptional situations. In this paper, we suggest a test framework and a testing method for robustness of the composite service written in WS-BPEL. For this, firstly we extract some information from the BPEL process and the participant services. Next, with the extracted information we construct the virtual testing environment that generates various faults and exceptional cases which may be raised within the real services. Finally the testing work for robustness of a composite service is performed on the test framework.

• Journal of Internet Computing and Services
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• v.6 no.2
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• pp.1-11
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• 2005

Web services are being recognized as the efficient way to integrate the distributed applications on the web based on the web standards such as SOAP, WSDL and UDDI. Recently, BPEL4WS is suggested as a standard integration model language for web services to integrate them efficiently. The recent studies of web service integration are focused on the comparability among the services, process identification and tracing, and automation, However, little or no effort has been dedicated to the reusability, extensibility on the business process integrated services and how to allocate the services dynamically, So, in this paper, we propose how to increase the reusability and extensibility of integrated structure when services are integrated using BPEL4WS, and how to allocate and use the services dynamically. Also, we propose the framework of the composition of web services for the efficient use of suggested integrated structure.

• The KIPS Transactions:PartD
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• v.15D no.4
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• pp.569-580
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• 2008

Web services are the current most promising technology for service oriented architecture(SOA) implementations. However, in spite of the large scale acceptance of web services, they have been relegated to internal integration projects, and the grand vision of virtual enterprises where partners can be integrated on demand is yet to be realized. The main reason is that the current standards of web services are not very suitable for the dynamic web service discovery and integration. In this paper, we present a novel SemanticBPEL solution that merges the benefit of WS-BPEL, with the advantage of OWL-S for building a semi-automatic web service composition system. In particular, this work proposes a multi-phase search method for solving dynamic discovery and integration problems of web services. The proposed method is compared with the existing keyword based retrieval method. These comparisons show that our approach outperforms the existing method.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.270-276
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• 2009

This paper outlines opportunities and challenges in the Implementation of BPEL based WFMS(Work Flow Management System) for the MES(Manufacturing Execution Systems) level in semiconductor manufacturing. At present, the most MES that are composed of several hundreds of applications in semiconductor wafer fabrication shop have the same problems as others about flexibility and adaptability. When a plant has to produce new product mix, remodel the manufacturing execution process, or replace obsolete equipments, the principal road blocks for responding to new manufacturing environment are inflexible communication infrastructure among the manufacturing process components and the difficulty in porting existing application software to new configurations. In this paper, the issues about BPEL standard, used for the flexibility of Workflow Management System, are presented. We introduce the integrated development framework named nanoFlow which is optimized for developing the BPEL based WFMS application for automated manufacturing system. We describe a WFMS implemented with using nanoFlow framework, review and evaluate the system in terms of flexibility and adaptability.

• Journal of the Korea Society of Computer and Information
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• v.15 no.12
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• pp.143-150
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• 2010

To survive in rapidly changing business environment, the enterprise should adapt its business process to the changing environment. The system integration is an important issue to tackle this challenge. It is unavoidable direction that SOA(Service Oriented Architecture) is accepted as an upcoming IT standard to support flexible business processes and integration. In particular, the integration of business processes and interfaces are important. Therefore, intuitive and easy to implement business process modeling is required. In this paper analyzes business process between enterprises, modeling the service-oriented business process with BPEL to realization level. Also, In this paper suggests that UML is used from high-level business problems to the process of low-level problem for Visual and effectively.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.393-396
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• 2008

웹 서비스는 XML, SOAP, WSDL, UDDI, BPEL 등의 표준을 기본 구조로 하고 있으며 이러한 기술들은 SOA에서 요구되는 이기종 분산 플랫폼 상의 복잡한 애플리케이션 통합 문제를 유연하게 해결할 수 있는 다양한 인터페이스를 제공하고 있다. 본 논문에서는 SOA의 핵심 기술인 반자동 웹 서비스 조합 기법을 구현하기 위해 WS-BPEL 기법과 OWL-S 기법을 융합한 새로운 SemanticBPEL 조합 기법을 제안한다. 이 기법은 실험 분석을 통해 기존의 검색 방법보다 성능이 우수함을 보인다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.869-871
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• 2007

최근 유비쿼터스 환경으로 발전하면서 이종의 하드웨어와 소프트웨어 플랫폼을 가지고 있는 디바이스들 간의 연동 기술이 점점 중요해지고 있다. 이에 대한 연구 중의 하나로 웹서비스를 이용한 이벤트 기반 다바이스 연동 프레임워크가 있으며, 이는 XML을 기반으로 이벤트 기반의 다바이스 연동을 정의하는 룰 언어인 WS-ECA를 제안하고 있다. 그러나, 아직까지 WS-ECA를 효과적으로 작성할 수 있는 방법이 제시되지 않고 있다. 따라서, 본 논문은 비즈니스 프로세스에 대한 로직을 표현하는 데 가장 활용이 많이 되고 있는 BPEL을 WS-ECA로 변환하는 방법을 제안하며, 이는 BPEL 저작 툴을 이용하여 기본적인 디바이스 연동을 정의할 수 있으므로 효과적으로 WS-ECA을 생성할 수 있는 방법을 제공할 수 있다.

• Proceedings of the CALSEC Conference
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• 2003.09a
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• pp.236-241
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• 2003

Business collaboration can be achieved by message exchange between companies. Such an exchange method enables loosely coupled integration between heterogeneous organization, and Web service has been a popular technique for accomplishing it. This research focuses on the choreography standards extending Web Service, specifically WSCI, BPEL4WS, and BPML. We compare and analyze the standards in terms of functionality, expressiveness and so on.