huaxingao commented on code in PR #9176:
URL: https://github.com/apache/iceberg/pull/9176#discussion_r1410118039
##########
api/src/main/java/org/apache/iceberg/expressions/ValueAggregate.java:
##########
@@ -30,13 +30,16 @@ protected ValueAggregate(Operation op, BoundTerm<T> term) {
@Override
public T eval(StructLike struct) {
- return term().eval(struct);
+ if (struct.size() > 1) {
+ throw new UnsupportedOperationException("Expected struct like of size
1");
+ }
+
+ return (T) struct.get(0, term().type().typeId().javaClass());
}
@Override
public T eval(DataFile file) {
- valueStruct.setValue(evaluateRef(file));
- return term().eval(valueStruct);
+ return (T) evaluateRef(file);
Review Comment:
Seems OK to me to just return `evaluateRef(file)`.
I'd like to get @rdblue 's opinion on this as well.
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