Journal of KIISE:Software and Applications (한국정보과학회논문지:소프트웨어및응용)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Techniques to Transform EJB 2.1 Components to EJB 3.0 for Performance Improvement and Component Reusability

컴포넌트의 성능향상과 재사용을 위한 EJB 2.1 컴포넌트에서 EJB 3.0로의 변환기법

  • Published : 2009.04.15
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Abstract

The EJB 3.0 specifications, which were improved in terms of performance and ease of development, were recently announced. Accordingly, for the EJB 3.0 application environment, developers generally prefer the gradual transformation of components whose performance must be improved to the complete transformation of all the EJB 2.1 components into EJB 3.0 components. Previous studies, however, did not consider the service of the application and did not ensure the compatibility and reusability of the components in the full replacement of EJB 3.0 due to the transformation using different specifications. This study proposed three transformation techniques that consider the service supported in the existing application, wherein the compatibility and reusability of the components are ensured in the case of the full replacement of EJB 3.0. The proposed transformation techniques are techniques for gradual transformation, such as direct transformation that directly connects components, indirect transformation that uses the EJB connector, and indirect template transformation wherein the template pattern is applied to the indirect transformation. The proposed transformation techniques were verified by comparing the reusability and processing capability of the components per second, and the standards for selecting a technique were provided based on the characteristics of the transformation into EJB 3.0 that were found in this study.

최근 성능향상과 개발의 편리성을 주요 특징으로 보완한 EJB 3.0 명세가 발표되었다. 이에 따라 개발자들은 EJB 3.0 기반의 애플리케이션 환경에서 EJB 2.1 컴포넌트 전체를 EJB 3.0 컴포넌트로 완전 대체하기보다는 성능향상이 요구되는 컴포넌트부터 점진적 변환하는 방법을 주로 고려하게 되었다. 그러나 기존 연구는 애플리케이션의 서비스를 고려하지 않기 때문에 점진적 변환을 하는데 문제가 있고, 상이한 명세의 변환 방법으로 EJB 3.0 완전 대체 시 컴포넌트의 호환의 문제와 재사용을 하는데 어려움이 있다. 본 연구에서는 기존 애플리케이션에서 제공하였던 서비스를 고려하며, EJB 3.0 완전 대체 시에서도 컴포넌트의 호환과 재사용이 가능한 세가지 변환 기법을 제안한다. 제안하는 변환 기법은 직접 컴포넌트 연결을 하는 직접 변환 기법 EJB 커넥터를 사용하는 간접 변환 기법 그리고 간접 변환 기법에 템플릿 패턴을 적용하는 간접 템플릿 변환 기법으로 점진적 변환을 위한 기법들이다. 이에 제안하는 변환 기법을 재사용과 초당 처리량이라는 평가 기준으로 비교 검증하며, 본 연구를 통해 도출된 EJB 3.0 변환시의 특성들을 기반으로 기법 선택의 기준을 제공한다.

Keywords

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