Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/13778#discussion_r69698991
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
---
@@ -346,14 +346,38 @@ case class LambdaVariable(value: String, isNull:
String, dataType: DataType) ext
object MapObjects {
private val curId = new java.util.concurrent.atomic.AtomicInteger()
+ /**
+ * Construct an instance of MapObjects case class.
+ *
+ * @param function The function applied on the collection elements.
+ * @param inputData An expression that when evaluated returns a
collection object.
+ * @param elementType The data type of elements in the collection.
+ */
def apply(
function: Expression => Expression,
inputData: Expression,
elementType: DataType): MapObjects = {
+ apply(function, inputData, elementType, inputData.dataType)
+ }
+
+ /**
+ * Construct an instance of MapObjects case class.
+ *
+ * @param function The function applied on the collection elements.
+ * @param inputData An expression that when evaluated returns a
collection object.
+ * @param elementType The data type of elements in the collection.
+ * @param inputDataType The explicitly given data type of inputData to
override the
+ * data type inferred from inputData (i.e.,
inputData.dataType).
--- End diff --
OK. Added.
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