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ProcSplitter.cc

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// -*- C++ -*-
//
// Package:     MVAComputer
// Class  :     ProcSplitter
// 

// Implementation:
//     Splits the first n instances of the input variables into separate
//     output variables.
//
// Author:      Christophe Saout
// Created:     Sat Apr 24 15:18 CEST 2007
// $Id: ProcSplitter.cc,v 1.3 2007/07/15 22:31:46 saout Exp $
//

#include "FWCore/Utilities/interface/Exception.h"

#include "PhysicsTools/MVAComputer/interface/VarProcessor.h"
#include "PhysicsTools/MVAComputer/interface/Calibration.h"

using namespace PhysicsTools;

namespace { // anonymous

class ProcSplitter : public VarProcessor {
    public:
        typedef VarProcessor::Registry::Registry<ProcSplitter,
                                        Calibration::ProcSplitter> Registry;

        ProcSplitter(const char *name,
                     const Calibration::ProcSplitter *calib,
                     const MVAComputer *computer);
        virtual ~ProcSplitter() {}

        virtual void configure(ConfIterator iter, unsigned int n);
        virtual void eval(ValueIterator iter, unsigned int n) const;

    private:
        unsigned int    count;
};

static ProcSplitter::Registry registry("ProcSplitter");

ProcSplitter::ProcSplitter(const char *name,
                          const Calibration::ProcSplitter *calib,
                          const MVAComputer *computer) :
        VarProcessor(name, calib, computer),
        count(calib->nFirst)
{
}

void ProcSplitter::configure(ConfIterator iter, unsigned int n)
{
        while(iter) {
                for(unsigned int i = 0; i < count; i++)
                        iter << Variable::FLAG_OPTIONAL;
                iter << iter++(Variable::FLAG_ALL);
        }
}

void ProcSplitter::eval(ValueIterator iter, unsigned int n) const
{
        while(iter) {
                unsigned int i = 0;
                while(i < iter.size()) {
                        iter << iter[i];
                        if (i++ < count)
                                iter();
                }
                while(i++ < count)
                        iter();
                iter();
                iter++;
        }
}

} // anonymous namespace

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