Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/9300#discussion_r43156381
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
---
@@ -159,8 +163,14 @@ trait ScalaReflection {
.map(p => UnresolvedExtractValue(p, expressions.Literal(part)))
.getOrElse(UnresolvedAttribute(part))
+ /** Returns the current path with a field at ordinal extracted. */
+ def addToPathOrdinal(ordinal: Int, dataType: DataType) =
+ path
+ .map(p => GetStructField(p, StructField(s"_$ordinal", dataType),
ordinal)) // TODOD
+ .getOrElse(BoundReference(ordinal, dataType, false)) // TODO
+
/** Returns the current path or throws an error. */
--- End diff --
Seems the comment needs to be updated?
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