NDLI: Eliminating redundancies with a "composition with adaptation" meta-programming technique

Content Provider	ACM Digital Library
Author	Shubiao, Li Jarzabek, Stan
Abstract	Redundant code obstructs program understanding and contributes to high maintenance costs. While most experts agree on that, opinions - on how serious the problem of redundancies really is and how to tackle it - differ. In this paper, we present the study of redundancies in the Java Buffer library, JDK 1.4.1, which was recently released by Sun. We found that at least 68% of code in the Buffer library is redundant in the sense that it recurs in many classes in the same or slightly modified form. We effectively eliminated that 68% of code at the meta-level using a technique based on "composition with adaptation" called XVCL. We argue that such a program solution is easier to maintain than buffer classes with redundant code. In this experiment, we have designed our meta-representation so that we could produce buffer classes in exactly the same form as they appear in the original Buffer library. While we have been tempted to re-design the buffer classes, we chose not to do so, in order to allow for the seamless integration of the XVCL solution into contemporary programming methodologies and systems. This decision has not affected the essential results reported in this paper.
Starting Page	237
Ending Page	246
Page Count	10
File Format	PDF
ISSN	01635948
DOI	10.1145/949952.940104
Journal	ACM SIGSOFT Software Engineering Notes (SOEN)
Volume Number	28
Issue Number	5
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1979-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Generative programming Meta-programming Class libraries Object-oriented methods
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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