ProductAggregator.hh

#ifndef GRAIL_PRODUCT_AGGREGATOR_H
#define GRAIL_PRODUCT_AGGREGATOR_H
 
#include "Aggregator.hh"
 
namespace grail
{
    namespace utility
    {
        template <typename ContextType>
        class ProductAggregator : public Aggregator<ContextType>
        {
        public:
            ProductAggregator(const std::vector<std::shared_ptr<Evaluator<ContextType>>>& childEvaluators)
                : Aggregator<ContextType>{childEvaluators}
            {
            }
 
            virtual EvaluatorType GetEvaluatorType() const override final { return EvaluatorType::AGGREGATOR_PRODUCT; }
 
        protected:
            virtual float Evaluate(const ContextType& context, UtilityEvaluatorSnapshot* const snapshot) const override final
            {
                float weight = 1;
                for (const auto& evaluator : this->childEvaluators)
                {
                    weight *= evaluator->EvaluateContext(context, snapshot);
                }
                return weight;
            }
        };
    }
}
 
#endif