OBEY: Optimal Batched Refactoring Plan Execution for Class Responsibility Redistribution

The redistribution of class responsibilities is a common reengineering practice in object-oriented (OO) software evolution. During the redistribution, developers frequently construct batched refactoring plans for moving multiple methods and fields among various classes. With an objective of carefull...

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Bibliographic Details
Published in:IEEE transactions on software engineering 2013-09, Vol.39 (9), p.1245-1263
Main Authors: Jiau, H. C., Lee Wei Mar, Chen, J. C.
Format: Article
Language:English
Subjects:
Batch processing
batched refactoring execution
change impact analysis
class responsibility redistribution
Computer programs
Context
Couplings
Engines
Freeware
Measurement
Object oriented
Object oriented programming
Open source software
Optimization
Reengineering
Software
Software engineering
Software systems
Source code
Studies
Technological change
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Summary:The redistribution of class responsibilities is a common reengineering practice in object-oriented (OO) software evolution. During the redistribution, developers frequently construct batched refactoring plans for moving multiple methods and fields among various classes. With an objective of carefully maintaining the cohesion and coupling degree of the class design, executing a batched refactoring plan without introducing any objective-violating side effect into the refactored code is essential. However, using most refactoring engines for batched refactoring plan execution introduces coupling-increasing Middle Man bad smell in the final refactored code and therefore makes the refactoring execution suboptimal in achieving the redistribution objective. This work proposes Obey, a methodology for optimal batched refactoring plan execution. Obey analyzes a batched refactoring plan, identifies Middle Man symptoms that cause suboptimal execution, and renovates the plan for optimal execution. We have conducted an empirical study on three open-source software projects to confirm the effectiveness of Obey in a practical context.
ISSN:0098-5589
1939-3520
DOI:10.1109/TSE.2013.19