gty404 commented on code in PR #437:
URL: https://github.com/apache/iceberg-cpp/pull/437#discussion_r2647404382
##########
src/iceberg/schema.cc:
##########
@@ -228,4 +243,33 @@ Result<std::vector<std::string>>
Schema::IdentifierFieldNames() const {
return names;
}
+Result<int32_t> Schema::HighestFieldId() const { return
highest_field_id_.Get(*this); }
+
+bool Schema::SameSchema(const Schema& other) const {
+ return fields_ == other.fields_ && identifier_field_ids_ ==
other.identifier_field_ids_;
+}
+
+Status Schema::Validate(int32_t format_version) const {
+ // Get all fields including nested ones
+ ICEBERG_ASSIGN_OR_RAISE(auto id_to_field, id_to_field_.Get(*this));
+
+ // Check each field's type and defaults
+ for (const auto& [field_id, field_ref] : id_to_field.get()) {
+ const auto& field = field_ref.get();
+
+ // Check if the field's type requires a minimum format version
+ if (auto it =
TableMetadata::kMinFormatVersions.find(field.type()->type_id());
+ it != TableMetadata::kMinFormatVersions.end()) {
+ if (int32_t min_format_version = it->second; format_version <
min_format_version) {
+ return InvalidSchema("Invalid type for {}: {} is not supported until
v{}",
+ field.name(), *field.type(), min_format_version);
+ }
+ }
+
+ // TODO(GuoTao.yu): Check default values when they are supported
Review Comment:
This method is equivalent to java's checkCompatibility, which only checks
types and default values.
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