zhjwpku commented on code in PR #156:
URL: https://github.com/apache/iceberg-cpp/pull/156#discussion_r2251858717
##########
src/iceberg/transform_function.cc:
##########
@@ -91,6 +140,46 @@ Result<ArrowArray> TruncateTransform::Transform(const
ArrowArray& input) {
return NotImplemented("TruncateTransform::Transform");
}
+Result<std::optional<Literal>> TruncateTransform::Transform(const Literal&
literal) {
+ assert(literal.type() == source_type());
+ if (literal.IsBelowMin() || literal.IsAboveMax()) {
+ return InvalidArgument(
+ "Cannot apply truncate transform to literal with value {} of type {}",
+ literal.ToString(), source_type()->ToString());
+ }
+
+ switch (source_type()->type_id()) {
+ case TypeId::kInt: {
+ auto value = std::get<int32_t>(literal.value());
+ return Literal::Int(value % width_);
Review Comment:
Double checked rust impl, what you proposed is the right way, changed.
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