klion26 commented on code in PR #9676:
URL: https://github.com/apache/arrow-rs/pull/9676#discussion_r3063015301
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parquet-variant-compute/src/variant_get.rs:
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@@ -43,14 +43,15 @@ pub(crate) enum ShreddedPathStep<'a> {
}
/// Given a shredded variant field -- a `(value?, typed_value?)` pair -- try
to take one path step
-/// deeper. For a `VariantPathElement::Field`, the step fails if there is no
`typed_value` at this
-/// level, or if `typed_value` is not a struct, or if the requested field name
does not exist.
+/// deeper. For a `VariantPathElement::Field`, if there is no `typed_value` at
this level, if
+/// `typed_value` is not a struct, or if the requested field name does not
exist, traversal returns
+/// a missing-path step (`Missing` or `NotShredded` depending on whether
`value` exists).
///
/// TODO: Support `VariantPathElement::Index`? It wouldn't be easy, and maybe
not even possible.
pub(crate) fn follow_shredded_path_element<'a>(
shredding_state: &BorrowedShreddingState<'a>,
path_element: &VariantPathElement<'_>,
- cast_options: &CastOptions,
+ _cast_options: &CastOptions,
Review Comment:
Do we still want to keep it if it doesn't needed
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