manuzhang commented on code in PR #2417:
URL: https://github.com/apache/iceberg-rust/pull/2417#discussion_r3328908378
##########
crates/iceberg/src/spec/schema/mod.rs:
##########
@@ -421,6 +421,52 @@ impl Schema {
pub fn field_id_to_fields(&self) -> &HashMap<i32, NestedFieldRef> {
&self.id_to_field
}
+
+ /// Returns the minimum table format version required by any type in this
schema.
+ ///
+ /// Returns [`None`] when the schema contains no type with a specific
minimum
+ /// table format version requirement.
+ pub fn min_format_version(&self) -> Option<FormatVersion> {
+ self.id_to_field
+ .values()
+ .filter_map(|field| field.field_type.as_primitive_type())
+ .filter_map(PrimitiveType::min_format_version)
+ .max()
+ }
+
+ /// Validates that all schema types are supported by the table format
version.
+ pub fn validate_compatible_with_format_version(
Review Comment:
I don't see the point for adding such a test for UT. Even if it costs time
for deep nested structs, DDL is not a frequent action in practice, isn't it?
Anyway, I don't think this should be part of unit tests.
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