MuteBardTison opened a new pull request, #46035:
URL: https://github.com/apache/arrow/pull/46035
### Rationale for this change
Currently, the Arrow C++ CSV converter does not support parsing strings into
`duration` types. This limits CSV ingestion capabilities when handling datasets
with time-based intervals represented as strings (e.g., `1s`, `2m`, `3h`). This
PR adds support for parsing such strings into Arrow's `DurationType`.
### What changes are included in this PR?
- Added `DurationValueDecoder` using `StringConverter<DurationType>`
- Registered support in both standard and dictionary converters
- Added unit tests covering:
- Basic parsing across all time units (s, ms, µs, ns)
- Null and custom null values
- Whitespace handling and error cases
### Are these changes tested?
Yes, conversion logic is fully covered by new tests in `converter_test.cc`.
### Are there any user-facing changes?
Yes, users can now convert duration strings in CSV files to Arrow `duration`
arrays by specifying the appropriate schema type.
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