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20 lines
1.0 KiB
Python
20 lines
1.0 KiB
Python
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from SpiffWorkflow.bpmn.parser.BpmnParser import BpmnParser
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from SpiffWorkflow.bpmn.parser.ValidationException import ValidationException
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from SpiffWorkflow.bpmn.parser.util import xpath_eval
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class SignavioBpmnParser(BpmnParser):
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def add_bpmn_xml(self, bpmn, filename=None):
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# signavio sometimes disconnects a BoundaryEvent from it's owning task
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# They then show up as intermediateCatchEvents without any incoming
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# sequence flows. Check for this case before parsing the XML.
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xpath = xpath_eval(bpmn)
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for catch_event in xpath('.//bpmn:intermediateCatchEvent'):
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incoming = xpath('.//bpmn:sequenceFlow[@targetRef="%s"]' % catch_event.get('id'))
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if not incoming:
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raise ValidationException(
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'Intermediate Catch Event has no incoming sequences. '
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'This might be a Boundary Event that has been '
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'disconnected.',
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node=catch_event, filename=filename)
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return super().add_bpmn_xml(bpmn, filename)
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