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[MINOR] Avoid code duplication for nullable in Higher Order function #22243

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[MINOR] Avoid code duplication for nullable in Higher Order function #22243

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[MINOR] Avoid code duplication for nullable in Higher Order function
mgaido91 Aug 27, 2018
393379c
address comment
mgaido91 Aug 28, 2018
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@mgaido91
mgaido91 committed Aug 28, 2018
commit 393379ca56225424ee58cbbe300b6ec8c83cbc7e
8 changes: 2 additions & 6 deletions ...alyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
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Expand Up @@ -90,6 +90,8 @@ object LambdaFunction {
*/
trait HigherOrderFunction extends Expression with ExpectsInputTypes {

override def nullable: Boolean = arguments.exists(_.nullable)

override def children: Seq[Expression] = arguments ++ functions

/**
Expand Down Expand Up @@ -155,8 +157,6 @@ trait HigherOrderFunction extends Expression with ExpectsInputTypes {
*/
trait SimpleHigherOrderFunction extends HigherOrderFunction {

override def nullable: Boolean = argument.nullable

def argument: Expression

override def arguments: Seq[Expression] = argument :: Nil
Expand Down Expand Up @@ -628,8 +628,6 @@ case class MapZipWith(left: Expression, right: Expression, function: Expression)

override def functionTypes: Seq[AbstractDataType] = AnyDataType :: Nil

override def nullable: Boolean = left.nullable || right.nullable

override def dataType: DataType = MapType(keyType, function.dataType, function.nullable)

override def bind(f: (Expression, Seq[(DataType, Boolean)]) => LambdaFunction): MapZipWith = {
Expand Down Expand Up @@ -800,8 +798,6 @@ case class ZipWith(left: Expression, right: Expression, function: Expression)

override def functionTypes: Seq[AbstractDataType] = AnyDataType :: Nil

override def nullable: Boolean = left.nullable || right.nullable

override def dataType: ArrayType = ArrayType(function.dataType, function.nullable)

override def bind(f: (Expression, Seq[(DataType, Boolean)]) => LambdaFunction): ZipWith = {
Expand Down