UserDefinedTypeCompositeAttributeDef.fromJson constructor
UserDefinedTypeCompositeAttributeDef.fromJson(
- Object? json_
Returns a new instance from a JSON value. May throw if the value does not have the expected structure.
Implementation
factory UserDefinedTypeCompositeAttributeDef.fromJson(Object? json_) {
final json = json_ is Map
? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
: json_;
return switch (json) {
[final name, final dataType, final collation] ||
(final name, final dataType, final collation) =>
UserDefinedTypeCompositeAttributeDef(
name: Ident.fromJson(name),
dataType: DataType.fromJson(dataType),
collation: Option.fromJson(collation,
(some) => (some! as Iterable).map(Ident.fromJson).toList()).value,
),
_ => throw Exception('Invalid JSON $json_')
};
}