Exploiting bad-smells and object-oriented characteristics to prioritize classes for refactoring

Ruchika Malhotra () and Priya Singh ()
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Ruchika Malhotra: Delhi Technological University
Priya Singh: Delhi Technological University

International Journal of System Assurance Engineering and Management, 2020, vol. 11, issue 2, No 2, 133-144

Abstract: Abstract Bad-smell indicates code-design flaws and poor software-quality that weaken software design and inversely affects software development. It also works as a catalyst for bugs and failures in the software system. Refactoring methods are used by software practitioners as corrective actions for bad-smells. The problem relies in the fact that there are over seventy refactoring methods available in literature and multiple refactoring methods can be used to nullify the effect of a particular bad-smell. So, it becomes very difficult to apply refactoring on complete source-code and almost impossible if software size is dramatically large. Thus, there arises a need for prioritizing classes in some way. This study aims at applying refactoring solution to only severely affected classes to improve the overall software quality. We proposed a framework that detects a small subset of classes from the entire source-code instantly require refactoring. This prioritization of classes is based on two factors-severity of the presence of bad-smells and object-oriented characteristics. The approach is evaluated on eight open-source Java software systems using ten most common bad-smells and six widely known C&K metrics. Both these factors help in calculating a new metric Quality Depreciation Index Rule (QDIR) that exposes those classes that are highly affected by bad-smells and demand an immediate refactoring solution. Results of the empirical study indicate that QDIR is an effective metric to remove bad-smells in an environment of stringent time constraints and limited cost making the maintenance of software system easier and effective with enhanced software quality.

Keywords: Bad-smells; Refactoring methods; Object-oriented characteristics; Software quality; Software maintenance (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s13198-020-01001-x

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