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7c219fd731
git-subtree-dir: SpiffWorkflow git-subtree-split: 63db3e45947ec66b8d0efc2c74064004f8ff482c
46 lines
1.9 KiB
Python
46 lines
1.9 KiB
Python
from SpiffWorkflow.bpmn.parser.task_parsers import TaskParser
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from SpiffWorkflow.bpmn.parser.ValidationException import ValidationException
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from SpiffWorkflow.bpmn.parser.util import one, xpath_eval
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SIGNAVIO_NS = 'http://www.signavio.com'
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class CallActivityParser(TaskParser):
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"""Parses a CallActivity node."""
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def create_task(self):
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subworkflow_spec = self.get_subprocess_spec()
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return self.spec_class(
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self.spec, self.get_task_spec_name(), subworkflow_spec,
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lane=self.lane,
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position=self.position,
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description=self.node.get('name', None))
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def get_subprocess_spec(self):
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called_element = self.node.get('calledElement', None) or self._fix_call_activities()
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parser = self.process_parser.parser.get_process_parser(called_element)
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if parser is None:
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raise ValidationException(
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f"The process '{called_element}' was not found. Did you mean one of the following: "
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f"{', '.join(self.process_parser.parser.get_process_ids())}?",
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node=self.node,
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filename=self.process_parser.filename)
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return parser.get_id()
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def _fix_call_activities(self):
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"""
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Signavio produces slightly invalid BPMN for call activity nodes... It
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is supposed to put a reference to the id of the called process in to
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the calledElement attribute. Instead it stores a string (which is the
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name of the process - not its ID, in our interpretation) in an
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extension tag.
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"""
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signavio_meta_data = xpath_eval(self.node, extra_ns={
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'signavio': SIGNAVIO_NS})(
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'.//signavio:signavioMetaData[@metaKey="entry"]')
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if not signavio_meta_data:
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raise ValidationException(
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'No Signavio "Subprocess reference" specified.',
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node=self.node, filename=self.filename)
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return one(signavio_meta_data).get('metaValue')
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