RenamePartitions.fromJson constructor

RenamePartitions.fromJson(
  1. Object? json_
)

Returns a new instance from a JSON value. May throw if the value does not have the expected structure.

Implementation

factory RenamePartitions.fromJson(Object? json_) {
  final json = json_ is Map
      ? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
      : json_;
  return switch (json) {
    [final oldPartitions, final newPartitions] ||
    (final oldPartitions, final newPartitions) =>
      RenamePartitions(
        oldPartitions:
            (oldPartitions! as Iterable).map(Expr.fromJson).toList(),
        newPartitions:
            (newPartitions! as Iterable).map(Expr.fromJson).toList(),
      ),
    _ => throw Exception('Invalid JSON $json_')
  };
}