Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/10133#discussion_r47044561
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects.scala
---
@@ -359,10 +359,27 @@ case class LambdaVariable(value: String, isNull:
String, dataType: DataType) ext
case class MapObjects(
function: AttributeReference => Expression,
inputData: Expression,
- elementType: DataType) extends Expression {
+ elementType: DataType)(
+ completeFunctionCopy: Option[Expression] = None) extends Expression {
--- End diff --
How about we do this instead? Make the `MapObjects` class have both
`loopVar` and `function` as constructor arguments. A custom `apply` method
will take `AttributeReference => Expression` and construct the object by
calculating the complete function eagerly.
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