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/*******************************************************/
/* CUDF solver: removed_criteria.h */
/* Concrete class for the removed criteria */
/* (c) Claude Michel I3S (UNSA-CNRS) 2009,2010,2011 */
/*******************************************************/
#ifndef _REMOVED_CRITERIA_H_
#define _REMOVED_CRITERIA_H_
#include <abstract_criteria.h>
// A concrete criteria class for the removed criteria
// i.e. number of virtual packages that were installed in the initial
// configuration and that are not installed in the final configuration
class removed_criteria: public abstract_criteria {
public:
CUDFproblem *problem; // a pointer to the problem
abstract_solver *solver; // a pointer to the solver
// list of installed virtual packages
CUDFVirtualPackageList installed_virtual_packages;
// column of the first variable used by the criteria
int first_free_var;
// Allocate some columns for the criteria
int set_variable_range(int first_free_var);
// Add the criteria to the objective
int add_criteria_to_objective(CUDFcoefficient lambda);
// Add the criteria to the constraint set
int add_criteria_to_constraint(CUDFcoefficient lambda);
// Add constraints required by the criteria
int add_constraints();
// lower and upper bound of the criteria
CUDFcoefficient ub, lb;
// Compute the criteria range, upper and lower bounds
CUDFcoefficient bound_range();
CUDFcoefficient upper_bound();
CUDFcoefficient lower_bound();
// Does the criteria allows problem reductions
bool can_reduce(CUDFcoefficient lambda) { return true; }
// Criteria initialization
void initialize(CUDFproblem *problem, abstract_solver *solver);
// lambda multiplier for the criteria
CUDFcoefficient lambda_crit ;
// Criteria initialization
removed_criteria() { this->lambda_crit = +1; };
removed_criteria(CUDFcoefficient lambda_crit) { this->lambda_crit = lambda_crit; };
};
#endif
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