Github user sunjincheng121 commented on a diff in the pull request:
https://github.com/apache/flink/pull/2653#discussion_r86540705
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/functions/ScalarFunction.scala
---
@@ -48,7 +48,7 @@ import org.apache.flink.api.table.{FlinkTypeFactory,
ValidationException}
* recommended to declare parameters and result types as primitive types
instead of their boxed
* classes. DATE/TIME is equal to int, TIMESTAMP is equal to long.
*/
-abstract class ScalarFunction extends UserDefinedFunction {
+abstract class ScalarFunction extends UserDefinedFunction with
EvaluableFunction {
--- End diff --
remove "with EvaluableFunction" if EvaluableFunction's methods had move to
UserDefinedFunctionUtils.scala
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