lesterfan commented on code in PR #45685:
URL: https://github.com/apache/arrow/pull/45685#discussion_r1983024117
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cpp/src/parquet/arrow/reader_internal.cc:
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@@ -256,6 +256,23 @@ Status ByteArrayStatisticsAsScalars(const Statistics&
statistics,
return Status::OK();
}
+Result<std::shared_ptr<ChunkedArray>> ViewOrCastChunkedArray(
+ const std::shared_ptr<ChunkedArray>& array,
+ const std::shared_ptr<DataType>& logical_value_type) {
+ auto view_result = array->View(logical_value_type);
Review Comment:
Someone more familiar with the code should confirm, but I believe this
`View` was originally meant to transform between value types which do have
equivalent layouts, e.g. `arrow::dictionary(::arrow::int32(),
::arrow::binary())` and `arrow::dictionary(::arrow::int32(), ::arrow::utf8())`.
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