/home/sebastian/gpudbms/trunk/hype-library/include/core/recomputation_heuristic.hpp

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/***********************************************************************************************************
Copyright (c) 2012, Sebastian Breß, Otto-von-Guericke University of Magdeburg, Germany. All rights reserved.

This program and accompanying materials are made available under the terms of the 
GNU LESSER GENERAL PUBLIC LICENSE - Version 3, http://www.gnu.org/licenses/lgpl-3.0.txt
***********************************************************************************************************/
#pragma once

#include <iostream>
#include <string>
#include <vector>
#include <memory>

//hype includes
#include <core/time_measurement.hpp>
#include <config/global_definitions.hpp>
#include <core/factory.hpp>

namespace hype{
        namespace core{

class Algorithm; //forward declaration

class RecomputationHeuristic_Internal{
        public:
        bool recompute(Algorithm& algorithm);
        virtual bool internal_recompute(Algorithm& algorithm) = 0;
        virtual ~RecomputationHeuristic_Internal(){}

protected:
        RecomputationHeuristic_Internal(const std::string& name);

private:
        std::string name_;
        unsigned int length_of_training_phase_;
        bool is_initial_approximation_function_computed_;
        unsigned int samplecounter_;
};

//factory function
const std::tr1::shared_ptr<RecomputationHeuristic_Internal> getNewRecomputationHeuristicbyName(std::string name);

typedef core::Factory<RecomputationHeuristic_Internal, std::string> RecomputationHeuristicFactory; //aFactory;
//typedef Loki::Singleton<RecomputationHeuristicFactory> RecomputationHeuristicFactorySingleton;


class RecomputationHeuristicFactorySingleton{
        public:
                static RecomputationHeuristicFactory& Instance();
};

        }; //end namespace core
}; //end namespace hype