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Add user cut callbacks; begin rewrite of UserCutsComponent

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This commit is contained in:
Alinson S. Xavier
2021-04-06 12:46:37 -05:00
parent cfb17551f1
commit 9f2d7439dc
11 changed files with 213 additions and 43 deletions
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15
miplearn/solvers/pyomo/base.py
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@@ -23,7 +23,7 @@ from miplearn.solvers.internal import (
LazyCallback,
MIPSolveStats,
)
from miplearn.types import VarIndex, SolverParams, Solution
from miplearn.types import VarIndex, SolverParams, Solution, UserCutCallback
logger = logging.getLogger(__name__)
@@ -81,9 +81,12 @@ class BasePyomoSolver(InternalSolver):
tee: bool = False,
iteration_cb: IterationCallback = None,
lazy_cb: LazyCallback = None,
user_cut_cb: UserCutCallback = None,
) -> MIPSolveStats:
if lazy_cb is not None:
raise Exception("lazy callback not supported")
raise Exception("lazy callback not currently supported")
if user_cut_cb is not None:
raise Exception("user cut callback not currently supported")
total_wallclock_time = 0
streams: List[Any] = [StringIO()]
if tee:
@@ -318,19 +321,19 @@ class BasePyomoSolver(InternalSolver):
return {}
def set_constraint_sense(self, cid: str, sense: str) -> None:
raise Exception("Not implemented")
raise NotImplementedError()
def extract_constraint(self, cid: str) -> Constraint:
raise Exception("Not implemented")
raise NotImplementedError()
def is_constraint_satisfied(self, cobj: Constraint, tol: float = 1e-6) -> bool:
raise Exception("Not implemented")
raise NotImplementedError()
def is_infeasible(self) -> bool:
return self._termination_condition == TerminationCondition.infeasible
def get_dual(self, cid):
raise Exception("Not implemented")
raise NotImplementedError()
def get_sense(self) -> str:
return self._obj_sense