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 1.9 2011/04/15 17:07:13 wmtan 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:
        static Base_t *create(const char *name,
                              const CalibBase_t *calib,
                              Parent_t *parent = 0);
    };

    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

#endif // PhysicsTools_MVAComputer_ProcessRegistry_h