Periecle opened a new pull request, #50164:
URL: https://github.com/apache/arrow/pull/50164
### Rationale for this change
`binary_view` and `string_view` arrays were not fully supported by
selection kernels. This also blocked dictionary decoding for dictionaries with
view-type values.
### What changes are included in this PR?
- Add take/filter support for `BINARY_VIEW` and `STRING_VIEW`.
- Preserve variadic payload buffers when taking view arrays.
- Allow dictionary decode/cast from dictionaries with view-type values.
- Add coverage for take, filter, drop null, scatter, and dictionary decode
paths.
### Are these changes tested?
Yes.
- `pre-commit run cpp --files <changed files>`
- `cmake --build cpp/build --target arrow-compute-vector-selection-test`
- Focused compute tests for cast, selection, drop null, and scatter
view-array paths
### Are there any user-facing changes?
Yes. `binary_view` and `string_view` arrays are now supported by the
affected selection and dictionary decode paths.
Partially addresses GH-39634
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