One will find below the diagram of the CalRecon algorithms at the end of 2004. Apart from the usual historical inconsistencies with class names, I was mainly worrying about the fact that CalClustersAlg has three attributes corresponding to the three concrete classes deriving from IEnergyCorr. The flexibility given by IEnergyCorr is partially frozen by such a predefined number of components.
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The first step of refactoring was concerning the clustering classes. It was the easiest door to the package, with much duplicated code. The diagram below illustrates the result. The change appears small as compared to the previous diagram, but this hides many code moved here and there.
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