Please use this identifier to cite or link to this item: https://doi.org/10.1002/smr.333
Title: Unifying clones with a generative programming technique: A case study
Authors: Jarzabek, S. 
Li, S.
Keywords: Class libraries
Generative programming
Maintainability
Object-oriented methods
Reusability
Issue Date: 2006
Source: Jarzabek, S.,Li, S. (2006). Unifying clones with a generative programming technique: A case study. Journal of Software Maintenance and Evolution 18 (4) : 267-292. ScholarBank@NUS Repository. https://doi.org/10.1002/smr.333
Abstract: Software clones - similar program structures repeated in variant forms - increase the risk of update anomalies, blow up the program size and complexity, possibly contributing to high maintenance costs. Yet, programs are often polluted by clones. In this paper, we present a case study of cloning in the Java Buffer library, JDK 1.5. We found that at least 68% of the code in the Buffer library was contained in cloned classes or class methods. Close analysis of program situations that led to cloning revealed difficulties in eliminating clones with conventional program design techniques. As a possible solution, we applied a generative technique of XVCL (XML-based Variant Configuration Language) to represent similar classes and methods in generic, adaptable form. Concrete buffer classes could be automatically produced from the generic structures. We argue, on analytical and empirical grounds, that unifying clones reduced conceptual complexity and enhanced the changeability of the Buffer library at rates proportional to code size reduction (68%). We evaluated our solution in qualitative and quantitative ways, and conducted a controlled experiment to support this claim. The approach presented in the paper can be used to enhance genericity and changeability of any program, independently of an application domain or programming language. As the solution is not without pitfalls, we discuss trade-offs involved in its project application. Copyright © 2006 John Wiley & Sons, Ltd.
Source Title: Journal of Software Maintenance and Evolution
URI: http://scholarbank.nus.edu.sg/handle/10635/39458
ISSN: 1532060X
DOI: 10.1002/smr.333
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

18
checked on Dec 5, 2017

WEB OF SCIENCETM
Citations

16
checked on Nov 2, 2017

Page view(s)

48
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.