pitrou commented on code in PR #50653:
URL: https://github.com/apache/arrow/pull/50653#discussion_r3657313412
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cpp/src/arrow/json/from_string.cc:
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@@ -124,20 +134,19 @@ Status GetConverter(const std::shared_ptr<DataType>&,
template <class Derived>
class ConcreteConverter : public JSONConverter {
public:
- Result<int64_t> SizeOfJSONArray(const rj::Value& json_obj) {
- if (!json_obj.IsArray()) {
- return JSONTypeError("array", json_obj.GetType());
- }
- return json_obj.Size();
- }
-
- Status AppendValues(const rj::Value& json_array) final {
+ Result<int32_t> AppendValues(sj::array& json_array) final {
auto self = static_cast<Derived*>(this);
- ARROW_ASSIGN_OR_RAISE(auto size, SizeOfJSONArray(json_array));
- for (uint32_t i = 0; i < size; ++i) {
- RETURN_NOT_OK(self->AppendValue(json_array[i]));
+ int32_t num_elements = 0;
+ for (auto element : json_array) {
+ sj::value value;
+ if (auto error_code = element.get(value); error_code !=
simdjson::SUCCESS) {
+ return Status::Invalid("Could not iterate elements of JSON array: ",
+ simdjson::error_message(error_code));
+ }
Review Comment:
Perhaps using some kind of helper that allows one to write e.g.:
```suggestion
ARROW_ASSIGN_OR_RAISE(
auto value,
GetJsonValue<sj::value>(element, "Could not iterate elements of JSON
array: "));
```
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