DchPidTrkDataK

class DchPidTrkDataK : public DchPidInfoI

    private:

                      DchPidTrkDataK(const DchPidTrkDataK&)
                 void buildEmbedded() const
                 void loadFromEmbedded()
      DchPidTrkDataK& operator=(const DchPidTrkDataK&)

    protected:

      virtual DchPidInfo* buildTransient(KanEventReader& eR)
             virtual void loadFrom(const DchPidInfo*, KanEventWriter&)
             virtual void resetHook(Dna::Scope scope = Dna::Event)

    public:

                                 DchPidTrkDataK()
                         virtual ~DchPidTrkDataK()
                 virtual UChar_t algorithmId() const
                virtual Double_t dedx(PdtPid::PidType = PdtPid::pion) const
                virtual Double_t dedxErr(PdtPid::PidType = PdtPid::pion) const
                virtual Double_t momentum(PdtPid::PidType = PdtPid::pion) const
                 virtual UChar_t nHypos() const
                  virtual UInt_t nSamples(PdtPid::PidType = PdtPid::pion) const
                    virtual void setTrkRecoTrkI(const TrkRecoTrkI* trk)
      virtual const TrkRecoTrkI* trkRecoTrkI() const

Data Members

    private:

                  Bool_t _built     ! True if the transient caches have been built
           DchPidTrkData _trkdata   ! set transiently from the following data members
                  Char_t _nhypos    # hypos stored for this object (always 1)
                  Char_t _alg       algorithm key
                  Char_t _algoId    'strategy'
          DchPidHypoData _hypodata  ! set transiently from the following data members
                  Char_t _hypo      which fit hypo
                  Char_t _samples   the number of samples
                UShort_t _Dedx      packed De/dx value
                UShort_t _Err       packed Error
                UShort_t _Momentum  packed entrance Momentum
      const TrkRecoTrkI* _trk       ! provided from outside

Class Description

      This is the persistent class for DchPidInfo objects.

      The DchPidInfoI interface requires the following access functions:

        UChar_t nHypos() const
        UChar_t algorithmId() const
        Double_t dedx(PdtPid::PidType=PdtPid::pion) const
        Double_t dedxErr(PdtPid::PidType=PdtPid::pion) const
        Double_t momentum(PdtPid::PidType=PdtPid::pion) const
        UInt_t nSamples(PdtPid::PidType=PdtPid::pion) const

      Additionally, this interface requires two functions which are used in
      transient-persistent-transient conversion:

        void setTrkRecoTrkI(const TrkRecoTrkI*);  // Cache the associated track
        const TrkRecoTrkI*  trkRecoTrkI() const;  // Return the associated track

      These functions are called when rebuilding the PidSummary objects.

      Persistent Location:
         Aod::"Pid_DchPids"

      Persistent Size: 11 bytes uncompressed

      The Packing looks like this:

         Char_t _nhypos;   // # hypos stored for this object (always 1)
         Char_t _alg;      // algorithm key
         Char_t _algoId;   // 'strategy'

         Char_t _hypo;          // which fit hypo  (uses Pdt::Pid enum)
         Char_t  _samples;      // the number of samples
         UShort_t _Dedx;        // De/Dx value packed exponentially (16:5) from 0.- 15000.
         UShort_t _Err;         // De/Dx error packed exponentially (16:5) form 0.- 2000.
         UShort_t _Momentum;    // Dch entrance Momentum packed flat from 0. - 10.

     The packing is handled by DchPid/DchPidTrkData.hh(cc) and DchPid/DchPidHypoData.hh(cc)

 return the Key to the algorithm
 I suspect that there is only one algorithm and that this is way
 over-designed.

 return the de/dx value.
 Note that the all PID hypothesis have the same de/dx value.

 return the error on the de/dx value.
 Note that the all PID hypothesis have the same value.

 return the momentum @ the entrance of the DCH.
 Note that the all PID hypothesis have the same value.

 return the number of samples used to calculate the de/dx
 Note that the all PID hypothesis have the same value.

 fill the persistent data from a transient object

 build a transient object from the persistent data

 reset the transient cache

 fill the persistent data from the transient cache

 build a transient cache from the persistent data

Inline Functions

                   UChar_t nHypos() const
                      void setTrkRecoTrkI(const TrkRecoTrkI* trk)
        const TrkRecoTrkI* trkRecoTrkI() const
            DchPidTrkDataK DchPidTrkDataK(const DchPidTrkDataK&)
           DchPidTrkDataK& operator=(const DchPidTrkDataK&)