alamb commented on code in PR #7757:
URL: https://github.com/apache/arrow-rs/pull/7757#discussion_r2165217535
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parquet-variant/src/variant/object.rs:
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@@ -145,7 +157,19 @@ impl<'m, 'v> VariantObject<'m, 'v> {
}
/// Get a field's name by index in `0..self.len()`
- pub fn field_name(&self, i: usize) -> Result<&'m str, ArrowError> {
+ pub fn field_name(&self, i: usize) -> Option<&'m str> {
+ if i >= self.num_elements {
+ return None;
+ }
+
+ match self.try_field_name(i) {
+ Ok(field_name) => Some(field_name),
+ Err(err) => panic!("validation error: {}", err),
Review Comment:
maybe `expect` would be cleaner?
```rust
self.try_field_name(i)
.expect("Unexpected validation failure")
```
The `expect` will cause a panic but will include the message and the
underlying error message
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