Source code for pm4py.algo.organizational_mining.roles.variants.log

from pm4py.algo.organizational_mining.roles.common import algorithm
from pm4py.objects.conversion.log import converter as log_converter
from pm4py.util import xes_constants as xes
from collections import Counter
from pm4py.util import exec_utils
from enum import Enum
from pm4py.util import constants
from typing import Optional, Dict, Any, Union, List
from pm4py.objects.log.obj import EventLog
from pm4py.objects.org.roles.obj import Role




class Parameters(Enum):
    ROLES_THRESHOLD_PARAMETER = "roles_threshold_parameter"
    RESOURCE_KEY = constants.PARAMETER_CONSTANT_RESOURCE_KEY
    ACTIVITY_KEY = constants.PARAMETER_CONSTANT_ACTIVITY_KEY





def apply(
    log: EventLog,
    parameters: Optional[Dict[Union[str, Parameters], Any]] = None,
) -> List[Role]:
    """
    Gets the roles (group of different activities done by similar resources)
    out of the log

    Parameters
    -------------
    log
        Log object
    parameters
        Possible parameters of the algorithm

    Returns
    ------------
    roles
        List of different roles inside the log
    """
    if parameters is None:
        parameters = {}

    resource_key = exec_utils.get_param_value(
        Parameters.RESOURCE_KEY, parameters, xes.DEFAULT_RESOURCE_KEY
    )
    activity_key = exec_utils.get_param_value(
        Parameters.ACTIVITY_KEY, parameters, xes.DEFAULT_NAME_KEY
    )

    stream = log_converter.apply(
        log,
        variant=log_converter.TO_EVENT_STREAM,
        parameters={"deepcopy": False, "include_case_attributes": False},
    )

    activity_resource_couples = Counter(
        (event[resource_key], event[activity_key]) for event in stream
    )

    return algorithm.apply(activity_resource_couples, parameters=parameters)