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fix: Support discriminators that map multiple keys to the same schema component BNCH-37105 #108

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Feb 17, 2022
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20 changes: 8 additions & 12 deletions openapi_python_client/parser/properties/__init__.py
Original file line number Diff line number Diff line change
Expand Up @@ -432,15 +432,7 @@ def build_union_property(
*, data: oai.Schema, name: str, required: bool, schemas: Schemas, parent_name: str
) -> Tuple[Union[UnionProperty, PropertyError], Schemas]:
sub_properties: List[Property] = []
inverted_mappings = {}
for k, v in (data.discriminator.mapping if data.discriminator else {}).items():
class_name = Reference.from_ref(v).class_name
if class_name in inverted_mappings:
raise ArgumentError(
f"Mapping more than one name to a class is currently not supported (class: {class_name})."
)
inverted_mappings[Reference.from_ref(v).class_name] = k
discriminator_mappings: Dict[str, Property] = {}
reference_name_to_subprop = {}
for sub_prop_data in chain(data.anyOf, data.oneOf):
sub_prop, schemas = property_from_data(
name=name, required=required, data=sub_prop_data, schemas=schemas, parent_name=parent_name
Expand All @@ -450,9 +442,13 @@ def build_union_property(

sub_properties.append(sub_prop)
if data.discriminator is not None:
discriminated_by = inverted_mappings.get(sub_prop.reference.class_name)
if discriminated_by is not None:
discriminator_mappings[discriminated_by] = sub_prop
reference_name_to_subprop[sub_prop.reference.class_name] = sub_prop

discriminator_mappings: Dict[str, Property] = {}
if data.discriminator is not None:
for k, v in (data.discriminator.mapping if data.discriminator else {}).items():
ref_class_name = Reference.from_ref(v).class_name
discriminator_mappings[k] = reference_name_to_subprop[ref_class_name]

default = convert_chain((prop._type_string for prop in sub_properties), data.default)
return (
Expand Down