Source code for pm4py.objects.conversion.dfg.variants.to_petri_net_activity_defines_place

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from pm4py.objects.dfg.utils import dfg_utils
from pm4py.objects.petri_net.obj import PetriNet, Marking
from pm4py.objects.petri_net.utils import petri_utils as pn_util
from enum import Enum
from pm4py.util import exec_utils

[docs]class Parameters(Enum): START_ACTIVITIES = 'start_activities' END_ACTIVITIES = 'end_activities'
[docs]def apply(dfg, parameters=None): """ Applies the DFG mining on a given object (if it is a Pandas dataframe or a log, the DFG is calculated) Parameters ------------- dfg Object (DFG) (if it is a Pandas dataframe or a log, the DFG is calculated) parameters Parameters """ if parameters is None: parameters = {} dfg = dfg start_activities = exec_utils.get_param_value(Parameters.START_ACTIVITIES, parameters, dfg_utils.infer_start_activities( dfg)) end_activities = exec_utils.get_param_value(Parameters.END_ACTIVITIES, parameters, dfg_utils.infer_end_activities(dfg)) activities = dfg_utils.get_activities_from_dfg(dfg) net = PetriNet("") im = Marking() fm = Marking() source = PetriNet.Place("source") net.places.add(source) im[source] = 1 sink = PetriNet.Place("sink") net.places.add(sink) fm[sink] = 1 places_corr = {} index = 0 for act in activities: places_corr[act] = PetriNet.Place(act) net.places.add(places_corr[act]) for act in start_activities: if act in places_corr: index = index + 1 trans = PetriNet.Transition(act + "_" + str(index), act) net.transitions.add(trans) pn_util.add_arc_from_to(source, trans, net) pn_util.add_arc_from_to(trans, places_corr[act], net) for act in end_activities: if act in places_corr: index = index + 1 inv_trans = PetriNet.Transition(act + "_" + str(index), None) net.transitions.add(inv_trans) pn_util.add_arc_from_to(places_corr[act], inv_trans, net) pn_util.add_arc_from_to(inv_trans, sink, net) for el in dfg.keys(): act1 = el[0] act2 = el[1] index = index + 1 trans = PetriNet.Transition(act2 + "_" + str(index), act2) net.transitions.add(trans) pn_util.add_arc_from_to(places_corr[act1], trans, net) pn_util.add_arc_from_to(trans, places_corr[act2], net) return net, im, fm