carpecodeum commented on code in PR #8166:
URL: https://github.com/apache/arrow-rs/pull/8166#discussion_r2291735851


##########
parquet-variant/src/path.rs:
##########
@@ -95,10 +95,19 @@ impl<'a> From<Vec<VariantPathElement<'a>>> for 
VariantPath<'a> {
     }
 }
 
-/// Create from &str
+/// Create from &str with support for dot notation
 impl<'a> From<&'a str> for VariantPath<'a> {
     fn from(path: &'a str) -> Self {
-        VariantPath::new(vec![path.into()])
+        // Support dot notation: "a.x" -> ["a", "x"]
+        if path.contains('.') {

Review Comment:
   I agree with the long-form more, but I just added this just as a proof of 
concept, to see what opinion everyone has of this, can fallback to the original 
approach, maybe @alamb can also give his opinion?



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