35 lines
1.5 KiB
Python
35 lines
1.5 KiB
Python
from __future__ import annotations
|
|
from typing import TYPE_CHECKING
|
|
|
|
import logging
|
|
|
|
from pulp import lpSum
|
|
|
|
from models.constraint import Constraint
|
|
from models.problem import Problem
|
|
|
|
if TYPE_CHECKING:
|
|
from models.solver_run import SolverRun
|
|
|
|
class MetadataConstraint(Constraint):
|
|
def build(self, problem_handler: Problem, solver_run: SolverRun) -> None:
|
|
logging.info('Metadata Constraint Generating...')
|
|
|
|
problem_handler.problem += lpSum(
|
|
[
|
|
len(bundle.items_with_attribute(self.reference_attribute)) * problem_handler.solver_bundles_var[bundle.id] for bundle in problem_handler.bundles
|
|
] +
|
|
[
|
|
item.attribute_exists(self.reference_attribute).real * problem_handler.solver_items_var[item.id] for item in problem_handler.items
|
|
]
|
|
) >= round(solver_run.total_form_items * (self.minimum / 100)), f'{self.reference_attribute.id} - {self.reference_attribute.value} - min'
|
|
|
|
problem_handler.problem += lpSum(
|
|
[
|
|
len(bundle.items_with_attribute(self.reference_attribute)) * problem_handler.solver_bundles_var[bundle.id] for bundle in problem_handler.bundles
|
|
] +
|
|
[
|
|
item.attribute_exists(self.reference_attribute).real * problem_handler.solver_items_var[item.id] for item in problem_handler.items
|
|
]
|
|
) <= round(solver_run.total_form_items * (self.maximum / 100)), f'{self.reference_attribute.id} - {self.reference_attribute.value} - max'
|