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51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2012 Matthew Hampton
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301 USA
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from .event_types import CatchingEvent
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from ....task import TaskState
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class StartEvent(CatchingEvent):
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"""Task Spec for a bpmn:startEvent node with an optional event definition."""
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def __init__(self, wf_spec, name, event_definition, **kwargs):
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super(StartEvent, self).__init__(wf_spec, name, event_definition, **kwargs)
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@property
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def spec_type(self):
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return f'{self.event_definition.event_type} Start Event'
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def catch(self, my_task, event_definition):
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# We might need to revisit a start event after it completes or
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# if it got cancelled so we'll still catch messages even if we're finished
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if my_task.state == TaskState.COMPLETED or my_task.state == TaskState.CANCELLED:
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my_task.set_children_future()
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my_task._set_state(TaskState.WAITING)
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super(StartEvent, self).catch(my_task, event_definition)
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def serialize(self, serializer):
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return serializer.serialize_generic_event(self)
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@classmethod
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def deserialize(cls, serializer, wf_spec, s_state):
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return serializer.deserialize_generic_event(wf_spec, s_state, StartEvent)
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