RooMappedCategory

class RooMappedCategory : public RooAbsCategory

    protected:

      virtual RooCatType evaluate() const

    public:

                        RooMappedCategory()
                        RooMappedCategory(const char* name, const char* title, RooAbsCategory& inputCat, const char* defCatName = "NotMapped", Int_t defCatIdx = NoCatIdx)
                        RooMappedCategory(const RooMappedCategory& other, const char* name = "0")
                virtual ~RooMappedCategory()
         static TClass* Class()
       virtual TObject* clone(const char* newname) const
        virtual TClass* IsA() const
                 Bool_t map(const char* inKeyRegExp, const char* outKeyName, Int_t outKeyNum = NoCatIdx)
           virtual void printToStream(ostream& os, RooPrintable::PrintOption opt = Standard, TString indent = ) const
         virtual Bool_t readFromStream(istream& is, Bool_t compact, Bool_t verbose = kFALSE)
           virtual void ShowMembers(TMemberInspector& insp, char* parent)
           virtual void Streamer(TBuffer& b)
                   void StreamerNVirtual(TBuffer& b)
           virtual void writeToStream(ostream& os, Bool_t compact) const

Data Members

    protected:

             TObjArray _mapArray  Array of mapping rules
           RooCatType* _defCat    Default (unmapped) output type
      RooCategoryProxy _inputCat  Input category

    public:

      static const RooMappedCategory::CatIdx NoCatIdx  

 Constructor with input category and name of default output state, which is assigned
 to all input category states that do not follow any mapping rule.

 Destructor

 Add mapping rule: any input category state label matching the 'inKeyRegExp'
 wildcard expression will be mapped to an output state with name 'outKey'

 Rules are evaluated in the order they were added. In case an input state
 matches more than one rule, the first rules output state will be assigned

 Calculate the current value of the object

 Print info about this mapped category to the specified stream. In addition to the info
 from RooAbsCategory::printToStream() we add:

  Standard : input category
     Shape : default value
   Verbose : list of mapping rules

 Write object contents to given stream

 I/O streaming interface (machine readable)