Hybrid Query Processing Engine for Coprocessing in Database Systems
HyPE
event_based_recomputation.hpp
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00001 
00002 #pragma once
00003 
00004 #include <iostream>
00005 #include <string>
00006 #include <vector>
00007 #include <memory>
00008 
00009 //hype includes
00010 #include <core/recomputation_heuristic.hpp>
00011 #include <core/time_measurement.hpp>
00012 
00013 namespace hype{
00014    namespace core{
00015 
00016    class RelativeErrorBasedRecomputation : public RecomputationHeuristic_Internal {
00017       
00018       public:
00019       RelativeErrorBasedRecomputation();
00020       explicit RelativeErrorBasedRecomputation(const double& error_threshold);
00022       virtual bool internal_recompute(Algorithm& algortihm);
00023 
00024       static RecomputationHeuristic_Internal* create(){
00025          return new RelativeErrorBasedRecomputation();
00026       }
00027 
00028       private:
00029       unsigned int counter_;
00030       double error_threshold_;
00031    };
00032 
00033    }; //end namespace core
00034 }; //end namespace hype
00035 
00036 
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