A review on quality models to analyse the impact of refactored code on maintainability with reference to software product line

Code cloning is a major problem in object oriented methodology and advanced software methodologies like Software Product Line methodology (SPL). SPL Maintainability is a critical quality factor which is influenced by code cloning detection and correction. There are quality models to study and analyze such impacts. But existing quality models fall short in assessing the impact of code clones on them. Since SPL maintainability is one of the key factors when considering software quality, our study revolves around it. Also, the fact that not much experiments have been performed to assess and measure the impact of refactored code on SPL maintainability, we wish to divulge in that particular area. A review has been done which validates the need to quantify SPL maintainability before and after it has been refactored.