def add_child_fragment_flow(self, ff, flow, direction, Name=None, **kwargs):
if Name is None:
Name = flow['Name']
f = LcFragment.new(Name, flow, direction, parent=ff, **kwargs)
self.add_entity_and_children(f)
return f
def _do_load(self, catalog, fragments):
for f in fragments:
frag = LcFragment.from_json(catalog, f)
self.add(frag)
for f in fragments:
frag = self[f['entityId']]
frag.finish_json_load(catalog, f)
def add_child_ff_from_exchange(self, ff, exchange, **kwargs):
"""
Uses a process intermediate exchange to define a child flow to the process. If the exchange's termination
is non-null, then the child exchange will also be terminated.
Want to use a background flow if one exists already
:param ff:
:param exchange:
:return:
"""
try:
bg = next(f for f in self.fragments(background=True) if f.term.terminates(exchange))
f = LcFragment.new(exchange.flow['Name'], exchange.flow, exchange.direction,
parent=ff, exchange_value=exchange.value, **kwargs)
f.terminate(bg)
except StopIteration:
f = LcFragment.from_exchange(ff, exchange)
self.add_entity_and_children(f)
return f
def create_fragment(self, flow, direction, Name=None, exchange_value=1.0, **kwargs):
"""
flow must present in self._entities. This method is for creating new fragments- for appending
fragment Flows (i.e. fragments with parent entries), use add_child_fragment_flow
:param flow:
:param direction:
:param Name: the fragment name (defaults to flow name)
:param exchange_value:
:return:
"""
if Name is None:
Name = flow['Name']
f = LcFragment.new(Name, flow, direction, exchange_value=exchange_value, **kwargs)
self.add_entity_and_children(f)
return f