felipeblazing commented on a change in pull request #10843:
URL: https://github.com/apache/arrow/pull/10843#discussion_r680128769
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File path: cpp/src/arrow/json/converter.cc
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@@ -147,6 +149,41 @@ class NumericConverter : public PrimitiveConverter {
const T& numeric_type_;
};
+template <typename T>
+class DecimalConverter : public PrimitiveConverter {
+ public:
+ using value_type = typename TypeTraits<T>::BuilderType::ValueType;
+
+ DecimalConverter(MemoryPool* pool, const std::shared_ptr<DataType>& type)
+ : PrimitiveConverter(pool, type) {}
+
+ Status Convert(const std::shared_ptr<Array>& in, std::shared_ptr<Array>*
out) override {
+ if (in->type_id() == Type::NA) {
+ return MakeArrayOfNull(out_type_, in->length(), pool_).Value(out);
+ }
+ const auto& dict_array = GetDictionaryArray(in);
+
+ using Builder = typename TypeTraits<T>::BuilderType;
+ Builder builder(out_type_, pool_);
+ RETURN_NOT_OK(builder.Resize(dict_array.indices()->length()));
+
+ auto visit_valid = [&](string_view repr) {
Review comment:
why capture everything here as well?
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