scovich commented on code in PR #9012:
URL: https://github.com/apache/arrow-rs/pull/9012#discussion_r2637466197
##########
parquet-variant/src/path.rs:
##########
@@ -112,11 +114,7 @@ impl<'a> From<Vec<VariantPathElement<'a>>> for
VariantPath<'a> {
/// Create from &str with support for dot notation
impl<'a> From<&'a str> for VariantPath<'a> {
fn from(path: &'a str) -> Self {
- if path.is_empty() {
- VariantPath::new(vec![])
- } else {
- VariantPath::new(path.split('.').map(Into::into).collect())
- }
+ VariantPath::new(path.split(".").flat_map(parse_path).collect())
Review Comment:
Meanwhile, even the parser I cooked up above is technically incomplete,
because JSON allows field names to contain any character (including `.`, `[`
and `]` which my suggestion would reject as ambiguous). The only way to avoid
that is with some kind of escaping syntax. I believe Iceberg uses canonical
JSONpath, for example.
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