Recommending adaptive changes for framework evolution

In the course of a framework´s evolution, changes ranging from a simple refactoring to a complete rearchitecture can break client programs. Finding suitable replacements for framework elements that were accessed by a client program and deleted as part of the framework´s evolution can be a challenging task. We present a recommendation system, SemDiff, that suggests adaptations to client programs by analyzing how a framework adapts to its own changes. In a study of the evolution of the Eclipse JDT framework and three client programs, our approach recommended relevant adaptive changes with a high level of precision, and detected non-trivial changes typically undiscovered by current refactoring detection techniques.