[GitHub] [spark] srowen commented on a change in pull request #31500: [SPARK-34388][SQL] Propagate the registered UDF name to ScalaUDF, ScalaUDAF and ScalaAggregator

[GitBox <gi...@apache.org>]

srowen commented on a change in pull request #31500:
URL: https://github.com/apache/spark/pull/31500#discussion_r571746993



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File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
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@@ -1088,4 +1088,6 @@ trait ComplexTypeMergingExpression extends Expression {
  * Common base trait for user-defined functions, including UDF/UDAF/UDTF of different languages
  * and Hive function wrappers.
  */
-trait UserDefinedExpression
+trait UserDefinedExpression {
+  def name: String

Review comment:
       Maybe default to using the class name or something? 




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