ConeyLiu commented on code in PR #7886:
URL: https://github.com/apache/iceberg/pull/7886#discussion_r1280076428
##########
spark/v3.4/spark/src/main/java/org/apache/iceberg/spark/SparkV2Filters.java:
##########
@@ -360,10 +425,57 @@ private static boolean hasNoInFilter(Predicate predicate)
{
}
private static boolean isSupportedInPredicate(Predicate predicate) {
- if (!isRef(childAtIndex(predicate, 0))) {
+ if (!canConvertToTerm(childAtIndex(predicate, 0))) {
return false;
} else {
return
Arrays.stream(predicate.children()).skip(1).allMatch(SparkV2Filters::isLiteral);
}
}
+
+ /** Should be called after {@link #canConvertToTerm} passed */
+ private static <T> UnboundTerm<Object> toTerm(T input) {
+ if (input instanceof NamedReference) {
+ return Expressions.ref(SparkUtil.toColumnName((NamedReference) input));
+ } else if (input instanceof UserDefinedScalarFunc) {
+ return udfToTerm((UserDefinedScalarFunc) input);
+ } else {
+ return null;
+ }
+ }
+
+ @SuppressWarnings("checkstyle:CyclomaticComplexity")
+ private static UnboundTerm<Object> udfToTerm(UserDefinedScalarFunc udf) {
+ org.apache.spark.sql.connector.expressions.Expression[] children =
udf.children();
+ String udfName = udf.name().toLowerCase(Locale.ROOT);
+ if (children.length == 1) {
+ org.apache.spark.sql.connector.expressions.Expression child =
children[0];
+ if (isRef(child)) {
Review Comment:
Do you mean like as `iceberg.system.years(2023)`? This expression should be
folded into constant value by Spark optimizer.
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