Abstract
Change impact analysis aims to provide insights about efforts and effects of a change to be expected, and to prevent missed adaptations. However, the benefit of applying an analysis in a given scenario is not clear. Only a few studies about change impact analysis approaches compare the actual effort spent implementing the change with the prediction of the analysis [4]. To gain more insight about change impact analysis benefits, we have performed a case study on changing a software’s input data model. We have applied two analyses — using the Java compiler and a dependency graph based approach — before implementing the actual change. In this paper, we present the results, showing that i) syntactically required changes have been predicted adequately, iii) changes required for semantical correctness required the major effort but were not predicted at all, and iii) tool support for change impact analysis still needs to be improved.
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