• Proceedings of the Korean Information Science Society Conference
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• 2006.06c
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• pp.223-225
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• 2006

영역지향 프로그래밍(Aspect-Oriented Programming)은 소프트웨어의 성능을 향상시키고 유지보수에 많은 이점을 가지는 새로운 프로그래밍 방법론이다. 하지만 영역지향 프로그래밍 방법으로 소프트웨어를 개발하기 위해서는 Aspect를 지원하는 새로운 영역지향 프로그래밍 언어를 사용하거나 레거시 시스템에 Aspect를 적용할 경우에 소스코드의 재 컴파일등과 같은 문제점을 가지고 있다. 이에 본 논문에서는 레거시 시스템에 Aspect를 동적으로 결합할 수 있는 동적결합 메커니즘을 제안한다. 이를 위하여 Aspect의 행위와 결합 정보를 가지는 Connector를 생성하고, 생성된 Connector는 코어클래스의 위임자로서 역할을 수행하게 되는 동적결합 가능하게 하는 메커니즘을 제안한다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.307-309
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• 2003

본 논문에서는 실시간 운영체제(RTOS)를 모듈화 하기 위하여 그래픽 기반의 Aspect-Oriented Programming (AOP) 프레임워크를 제시한다. 기존의 컴포넌트, 객체 지향 방법론, 그리고 최근의 AOP들은 RTOS와 같이 많은 기능들이 복잡하게 연관된 소프트웨어를 모듈화 하는 데는 적합하지 않았다. 본 논문의 새로운 AOP 프레임워크는 다음과 같은 특징을 가지고 있다. 첫째, 클래스나 메소드의 단위를 넘어서서 구현되는 기능들이 어떻게 aspect로 모듈화 되는지를 시각적으로 보여준다. 또한 기존의 AOP와 같이 여러 aspect들을 이리저리 옮겨 다닐 필요 없이 한 곳에서 코드가 어떤 순서로 수행될 지 알 수 있도록 해 준다. 둘째, 코드를 삽입할 위치를 지정하는 단위를 메소드 단위보다 더 세밀하게 하여 메소드의 수행 중간에 특정 aspect를 위한 코드를 삽입할 수 있도록 하였다. 그래서 하나의 메소드에 여러 aspect가 복잡하게 관여하는 경우가 많은 RTOS를 디자인 할 때 특히 유리하다.

• Journal of KIISE:Software and Applications
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• v.35 no.12
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• pp.741-752
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• 2008

Aspect-Oriented Software Development(AOSD) is the software development methodology that classifies concerns of the system and identifies crosscutting concerns and organizes aspect class, and AOSD has emerged as an important user-oriented software development methodology with high maintainability. However, most of related studies worked on identification and specification and coding of crosscutting concerns. And there have been few studies on slicing technique for tracing method of specified crosscutting concerns. Therefore, this paper proposes slicing technique based on AOSD that identifies and specifies crosscutting concerns through interactive analysis between use cases; also, suggests slicing technique which improves traceability centering on identified crosscutting concerns; applies the aspect-oriented slicing technique to Learning Management System(LMS) for case-study. LMS is a cyber educational system that demands a lot of functional changes and expansion, so it is effective to apply AOSD with high maintainability in developing LMS; and shows the results that compared with related studies by comparing six elements.

• Journal of the Korea Society of Computer and Information
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• v.14 no.2
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• pp.119-128
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• 2009

As use of web applications and web-based information systems increases, so web application attacks are increasing. Recently, XSRF(Gross Site Request Forgery) attacks among a variety of web attacks become important because victim's damage caused by such attacks can be severe. But adding security functions for preventing XSRF attacks to existing developed and running software systems could affect move dangerous and expensive to companies and organizations. We suggest effectively adding these security functions to legacy systems, could separate concerns using advantage of the modularity offered by AOP(Aspect-Oriented Programming) methodology. In this paper, we have presented approach for detecting and preventing XSRF in JEE systems using aspect of AOP.

• Korea Information Processing Society Review
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• v.10 no.5
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• pp.94-101
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• 2003

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.21 no.9
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• pp.94-101
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• 2003

• Journal of the Korea Society of Computer and Information
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• v.14 no.9
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• pp.1-10
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• 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.

• Journal of KIISE:Software and Applications
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• v.35 no.7
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• pp.424-430
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• 2008

Identifying crosscutting concerns during requirements engineering phase is one of the most essential parts in Aspect-Oriented Software Development. Considering crosscutting concerns in the earlier phase of the development improves consistency among requirements so that it can help maintain software systems efficiently and effectively. It also provides a systematic way to manage requirements changes by supporting traceability throughout the software lifecycle. Thus, identifying tangled and scattered concerns, and encapsulating them into separate entities must be addressed from the early phase of the development. To do so, first, functional and non-functional concerns must be clearly separated. Second, a pointcut where a main concern meets crosscutting concerns should be defined and specified precisely. Third, it is required to detect conflicts being occurred during composition of crosscutting concerns from the earlier phase. Therefore, this paper proposes a systematic approach to identifying and specifying crosscutting concerns using goal-scenario based requirements analysis. And we demonstrate the applicability of the approach by applying it into the intelligent service robot system.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06a
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• pp.49-50
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• 2007

• Journal of Information Technology Services
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• v.10 no.2
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• pp.223-234
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• 2011

Loosely coupled properties of SOA(Service Oriented Architecture) services do not guarantee that service applications always work properly. Service errors may also influence other services of SOA. These characteristics adversely affect software reliability. Therefore, it is a challenge to effectively manage system change and errors for operating services normally. In this study, we propose a SOA based framework using AOP(Aspect Oriented Programming) for reliable service applications. AOP provides a way to manipulate cross-cutting concerns such as logging, security and reliability and these concerns can be added to applications through weaving process. We define a service specification and an aspect specification for this framework. This framework also includes service provider, requester, repository, platform, manager, and aspect weaver to handle changes and exceptions of applications. Independent Exception Handler is stored to exhibited external Aspect Service Repository. When exception happened, Exception Handler is linked dynamically according to aspect rule that is defined in aspect specification and offer function that handle exception alternate suitable service in systematic error situation. By separating cross-cutting concerns independently, we expect that developer can concentrate on core service implementation and reusability, understanding, maintainability increase. Finally, we have implemented a prototype system to demonstrate the feasibility of our framework in case study.