scovich commented on code in PR #9677:
URL: https://github.com/apache/arrow-rs/pull/9677#discussion_r3064915735
##########
arrow-schema/src/field.rs:
##########
@@ -504,13 +504,39 @@ impl Field {
.map(String::as_ref)
}
+ /// Returns `true` if this [`Field`] has the given [`ExtensionType`] name
+ /// and can be successfully validated as that extension type.
+ ///
+ /// This first checks the extension type name and only calls
+ /// [`ExtensionType::validate`] when the name matches.
+ ///
+ /// This is useful when you only need a boolean validity check and do not
+ /// need to retrieve the extension type instance.
+ #[inline]
+ pub fn has_valid_extension_type<E: ExtensionType>(&self) -> bool {
+ if self.extension_type_name() != Some(E::NAME) {
+ return false;
+ }
+
+ let ext_metadata = self
+ .metadata()
+ .get(EXTENSION_TYPE_METADATA_KEY)
+ .map(|s| s.as_str());
Review Comment:
Ah, good point. And the two `as_str` forms are the same line length, so
probably no point changing it unless you like the other form better.
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