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ProcessRegistry.h

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#ifndef PhysicsTools_MVAComputer_ProcessRegistry_h
#define PhysicsTools_MVAComputer_ProcessRegistry_h
// -*- C++ -*-
//
// Package:     MVAComputer
// Class  :     ProcessRegistry
//

//
// Author:      Christophe Saout <christophe.saout@cern.ch>
// Created:     Sat Apr 24 15:18 CEST 2007
// $Id: ProcessRegistry.h,v 1.7 2007/08/16 15:23:56 saout Exp $
//

#include <string>
#include <map>

namespace PhysicsTools {

template<class Base_t, class CalibBase_t, class Parent_t>
class ProcessRegistry {
    public:
        template<class Instance_t, class Calibration_t>
        class Registry : public ProcessRegistry<Base_t, CalibBase_t, Parent_t> {
            public:
                Registry(const char *name) :
                        ProcessRegistry<Base_t, CalibBase_t, Parent_t>(name) {}

            protected:
                Base_t *instance(const char *name, const CalibBase_t *calib,
                                 Parent_t *parent) const
                {
                        return new Instance_t(name,
                                dynamic_cast<const Calibration_t*>(calib),
                                parent);
                }
        };

        class Factory {
            public:
                inline static Base_t *create(const char *name,
                                             const CalibBase_t *calib,
                                             Parent_t *parent = 0)
                { return ProcessRegistry::create(name, calib, parent); }
        };

    protected:
        friend class Factory;

        ProcessRegistry(const char *name) : name(name)
        { registerProcess(name, this); }
        virtual ~ProcessRegistry() { unregisterProcess(name); }

        static Base_t *create(const char *name, const CalibBase_t *calib,
                              Parent_t *parent);

        virtual Base_t *instance(const char *name, const CalibBase_t *calib,
                                 Parent_t *parent) const = 0;

    private:
        static void registerProcess(const char *name,
                                    const ProcessRegistry *process);
        static void unregisterProcess(const char *name);

        typedef std::map<std::string, const ProcessRegistry*> RegistryMap;

        static RegistryMap *getRegistry();

        const char *name;
};

} // namespace PhysicsTools

#include "PhysicsTools/MVAComputer/interface/ProcessRegistry.icc"

#endif // PhysicsTools_MVAComputer_ProcessRegistry_h

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