Source code for pm4py.algo.discovery.powl.inductive.fall_through.empty_traces

'''
    PM4Py – A Process Mining Library for Python
Copyright (C) 2024 Process Intelligence Solutions UG (haftungsbeschränkt)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see this software project's root or 
visit <https://www.gnu.org/licenses/>.

Website: https://processintelligence.solutions
Contact: info@processintelligence.solutions
'''

from collections import Counter
from multiprocessing import Pool, Manager
from typing import Tuple, List, Optional, Dict, Any

from pm4py.algo.discovery.inductive.dtypes.im_ds import IMDataStructureUVCL
from pm4py.algo.discovery.inductive.fall_through.empty_traces import (
    EmptyTracesUVCL,
)
from pm4py.objects.powl.obj import OperatorPOWL
from pm4py.objects.process_tree.obj import Operator
from copy import copy




class POWLEmptyTracesUVCL(EmptyTracesUVCL):



    @classmethod
    def apply(
        cls,
        obj: IMDataStructureUVCL,
        pool: Pool = None,
        manager: Manager = None,
        parameters: Optional[Dict[str, Any]] = None,
    ) -> Optional[Tuple[OperatorPOWL, List[IMDataStructureUVCL]]]:
        if cls.holds(obj, parameters):
            data_structure = copy(obj.data_structure)
            del data_structure[()]
            children = [
                IMDataStructureUVCL(Counter()),
                IMDataStructureUVCL(data_structure),
            ]
            return OperatorPOWL(Operator.XOR, children), children
        else:
            return None