BilevelBasedBranchAndBound.h

//
// Created by Henri on 03/02/2026.
//
 
#ifndef IDOL_NESTEDBRANCHANDCUT_H
#define IDOL_NESTEDBRANCHANDCUT_H
 
#include "idol/general/optimizers/OptimizerFactory.h"
#include "idol/robust/modeling/Description.h"
#include "idol/bilevel/modeling/Description.h"
 
namespace idol::Robust {
    class BilevelBasedBranchAndBound;
}
 
class idol::Robust::BilevelBasedBranchAndBound : public OptimizerFactoryWithDefaultParameters<BilevelBasedBranchAndBound> {
    const Bilevel::Description& m_bilevel_description;
    const Robust::Description& m_robust_description;
 
    std::unique_ptr<OptimizerFactory> m_optimality_bilevel_optimizer;
    std::unique_ptr<OptimizerFactory> m_feasibility_bilevel_optimizer;
    std::optional<bool> m_with_first_stage_relaxation;
public:
    BilevelBasedBranchAndBound(const Robust::Description& t_robust_description,
                       const Bilevel::Description& t_bilevel_description);
 
    BilevelBasedBranchAndBound(const BilevelBasedBranchAndBound& t_src);
 
    Optimizer *operator()(const Model &t_model) const override;
 
    [[nodiscard]] OptimizerFactory *clone() const override { return new BilevelBasedBranchAndBound(*this); }
 
    BilevelBasedBranchAndBound& with_optimality_bilevel_optimizer(const OptimizerFactory& t_factory);
 
    BilevelBasedBranchAndBound& with_feasibility_bilevel_optimizer(const OptimizerFactory& t_factory);
 
    BilevelBasedBranchAndBound& with_first_stage_relaxation(bool t_value);
 
};
 
#endif //IDOL_NESTEDBRANCHANDCUT_H