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Add UnionArray::fields #8884

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Merged
alamb merged 1 commit into from
Nov 24, 2025
Merged

Add UnionArray::fields #8884

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8 changes: 8 additions & 0 deletions arrow-array/src/array/union_array.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -311,6 +311,14 @@ impl UnionArray {
}
}

/// Returns the [`UnionFields`] for the union.
pub fn fields(&self) -> &UnionFields {
match self.data_type() {
DataType::Union(fields, _) => fields,
_ => unreachable!("Union array's data type is not a union!"),
}
}

/// Returns whether the `UnionArray` is dense (or sparse if `false`).
pub fn is_dense(&self) -> bool {
match self.data_type() {
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