Earticle

초록

영어

Legacy software can be characterized as old software that continues to provide core services to an organization. Applications written in RPG can be considered as legacy software.RPG was originated as a report-building program developed by IBM. Many business applications are written in RPG, and they are often critical in the operations of enterprises. Through decades of use, these RPG legacy systems can be hard to maintain, improve, and expand, since there is a general lack of understanding of the systems. The supporting documentation may not be current as well due to many changes implemented into the software. This paper thus presents a method of reverse engineering for recovering the intent of code from RPG legacy source. The metadata is gathered from the input RPG source by detecting and handling the program controls and operations. These metadata stored in the directed graph will then be mapped to DOT markup language format for flowchart rendering using visualization tool, Graphviz. The prototype implemented in this work would facilitate the understanding of RPG legacy code during software maintenance process.

목차

Abstract
 1. Introduction
 2. RPG (Report Program Generator) [1]
  2.1. RPG Specifications
  2.2. Control Structure
  2.3. Indicator
 3. Research Methodology
  3.1. Chunking
  3.2. Code Analysis
  3.3. Generate Program Information
  3.4. Generate Intent of Code
  3.5. Transform to DOT Language
  3.6. Render with Visualization Program
 4. Prototype
 5. Conclusion
 References

키워드

저자

• Kochaporn Suntiparakoo [ Department of Computer Engineering, Chulalongkorn University, Bangkok10330, Thailand ]
• Yachai Limpiyakorn [ Department of Computer Engineering, Chulalongkorn University, Bangkok10330, Thailand ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Software Engineering and Its Applications

• 간기

  월간

• pISSN

  1738-9984

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605