zicat commented on a change in pull request #16163:
URL: https://github.com/apache/flink/pull/16163#discussion_r655296873
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/codegen/calls/BridgingFunctionGenUtil.scala
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@@ -147,7 +146,21 @@ object BridgingFunctionGenUtil {
externalOperands,
returnType)
} else {
- generateScalarFunctionCall(ctx, functionTerm, externalOperands,
outputDataType)
+ val targetOperands = externalOperands.zip(operands).map{
+ case(targetOperand, sourceOperand) => {
+ if (sourceOperand.isInstanceOf[ExternalGeneratedExpression]) {
+ val expression =
sourceOperand.asInstanceOf[ExternalGeneratedExpression]
+ ExternalGeneratedExpression.fromGeneratedExpression(
Review comment:
ExternalGeneratedExpression is not a case class, so the method copy of
parent class GeneratedExpression create a new object is the instance of
GeneratedExpression not ExternalGeneratedExpression
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