Prebuilt.hpp

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#ifndef KNNCOLLE_PREBUILT_HPP
#define KNNCOLLE_PREBUILT_HPP
 
#include <memory>
#include <cstddef>
#include <filesystem>
 
#include "Searcher.hpp"
 
namespace knncolle {
 
template<typename Index_, typename Data_, typename Distance_>
class Prebuilt {
public:
    Prebuilt() = default;
    Prebuilt(const Prebuilt&) = default;
    Prebuilt(Prebuilt&&) = default;
    Prebuilt& operator=(const Prebuilt&) = default;
    Prebuilt& operator=(Prebuilt&&) = default;
    virtual ~Prebuilt() = default;
public:
    virtual Index_ num_observations() const = 0;
    
    virtual std::size_t num_dimensions() const = 0;
 
public:
    virtual std::unique_ptr<Searcher<Index_, Data_, Distance_> > initialize() const = 0;
 
    virtual void save([[maybe_unused]] const std::filesystem::path& dir) const {
        throw std::runtime_error("saving is not supported");
    }
 
public:
    auto initialize_known() const {
        return initialize();
    }
};
 
}
 
#endif