/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/PhysicsTools/MVATrainer/interface/MVATrainerLooperImpl.h

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#ifndef PhysicsTools_MVATrainer_MVATrainerLooperImpl_h
#define PhysicsTools_MVATrainer_MVATrainerLooperImpl_h

#include <string>
#include <memory>

#include <boost/shared_ptr.hpp>

#include "FWCore/Utilities/interface/Exception.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/ESProducts.h"

#include "PhysicsTools/MVATrainer/interface/MVATrainerLooper.h"
#include "PhysicsTools/MVATrainer/interface/MVATrainerContainer.h"

namespace PhysicsTools {

template<class Record_t>
class MVATrainerLooperImpl : public MVATrainerLooper {
    public:
        MVATrainerLooperImpl(const edm::ParameterSet &params) :
                MVATrainerLooper(params)
        {
                setWhatProduced(this, "trainer");
                addTrainer(new Trainer(params));
        }

        virtual ~MVATrainerLooperImpl() {}

        boost::shared_ptr<Calibration::MVAComputer>
        produce(const Record_t &record)
        { return (*getTrainers().begin())->getCalibration(); }
};

template<class Record_t>
class MVATrainerContainerLooperImpl : public MVATrainerLooper {
    public:
        enum { kTrainer, kTrained };

        MVATrainerContainerLooperImpl(const edm::ParameterSet &params) :
                MVATrainerLooper(params)
        {
                setWhatProduced(this, edm::es::label("trainer", kTrainer)
                                                    ("trained", kTrained));

                std::vector<edm::ParameterSet> trainers =
                        params.getParameter<std::vector<edm::ParameterSet> >(
                                                                "trainers");

                for(std::vector<edm::ParameterSet>::const_iterator iter =
                        trainers.begin(); iter != trainers.end(); iter++)

                        addTrainer(new Trainer(*iter));
        }

        virtual ~MVATrainerContainerLooperImpl() {}

        edm::ESProducts<
                edm::es::L<Calibration::MVAComputerContainer, kTrainer>,
                edm::es::L<Calibration::MVAComputerContainer, kTrained> >
        produce(const Record_t &record)
        {
                boost::shared_ptr<MVATrainerContainer> trainerCalib(
                                                new MVATrainerContainer());
                TrainContainer trainedCalib;

                bool untrained = false;
                for(TrainerContainer::const_iterator iter =
                                                        getTrainers().begin();
                    iter != getTrainers().end(); iter++) {
                        Trainer *trainer = dynamic_cast<Trainer*>(*iter);
                        TrainObject calib = trainer->getCalibration();

                        trainerCalib->addTrainer(trainer->calibrationRecord,
                                                 calib);
                        if (calib) {
                                untrained = true;
                                continue;
                        }

                        if (!trainedCalib)
                                trainedCalib = TrainContainer(
                                        new Calibration::MVAComputerContainer);

                        trainedCalib->add(trainer->calibrationRecord) =
                                *trainer->getTrainer()->getCalibration();
                }

                if (untrained)
                        trainedCalib = TrainContainer(
                                        new UntrainedMVAComputerContainer);

                edm::es::L<Calibration::MVAComputerContainer, kTrainer>
                                                trainedESLabel(trainerCalib);

                return edm::es::products(trainedESLabel,
                                         edm::es::l<kTrained>(trainedCalib));
        }

    protected:
        class Trainer : public MVATrainerLooper::Trainer {
            public:
                Trainer(const edm::ParameterSet &params) :
                        MVATrainerLooper::Trainer(params),
                        calibrationRecord(params.getParameter<std::string>(
                                                "calibrationRecord")) {}

                std::string calibrationRecord;
        };
};

} // namespace PhysicsTools

#endif // PhysicsTools_MVATrainer_MVATrainerLooperImpl_h