rdblue commented on code in PR #7886:
URL: https://github.com/apache/iceberg/pull/7886#discussion_r1264200570
##########
spark/v3.4/spark/src/main/java/org/apache/iceberg/spark/SparkV2Filters.java:
##########
@@ -302,10 +354,25 @@ private static <T> T childAtIndex(Predicate predicate,
int index) {
return (T) predicate.children()[index];
}
+ private static boolean
couldConvert(org.apache.spark.sql.connector.expressions.Expression expr) {
+ return isRef(expr) || isSystemFunc(expr);
+ }
+
private static boolean
isRef(org.apache.spark.sql.connector.expressions.Expression expr) {
return expr instanceof NamedReference;
}
+ private static boolean
isSystemFunc(org.apache.spark.sql.connector.expressions.Expression expr) {
+ if (expr instanceof UserDefinedScalarFunc) {
+ UserDefinedScalarFunc udf = (UserDefinedScalarFunc) expr;
+ return udf.canonicalName().startsWith("iceberg")
Review Comment:
While that's not a constant, there are a limited number of values that
`sqlType.catalogString()` might return.
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