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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
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mgaido91 Aug 28, 2018
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18 changes: 2 additions & 16 deletions ...alyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
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Original file line number Diff line number Diff line change
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 @@ -217,8 +219,6 @@ case class ArrayTransform(
function: Expression)
extends ArrayBasedSimpleHigherOrderFunction with CodegenFallback {

override def nullable: Boolean = argument.nullable

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

override def bind(f: (Expression, Seq[(DataType, Boolean)]) => LambdaFunction): ArrayTransform = {
Expand Down Expand Up @@ -287,8 +287,6 @@ case class MapFilter(
copy(function = f(function, (keyType, false) :: (valueType, valueContainsNull) :: Nil))
}

override def nullable: Boolean = argument.nullable

override def nullSafeEval(inputRow: InternalRow, argumentValue: Any): Any = {
val m = argumentValue.asInstanceOf[MapData]
val f = functionForEval
Expand Down Expand Up @@ -328,8 +326,6 @@ case class ArrayFilter(
function: Expression)
extends ArrayBasedSimpleHigherOrderFunction with CodegenFallback {

override def nullable: Boolean = argument.nullable

override def dataType: DataType = argument.dataType

override def functionType: AbstractDataType = BooleanType
Expand Down Expand Up @@ -375,8 +371,6 @@ case class ArrayExists(
function: Expression)
extends ArrayBasedSimpleHigherOrderFunction with CodegenFallback {

override def nullable: Boolean = argument.nullable

override def dataType: DataType = BooleanType

override def functionType: AbstractDataType = BooleanType
Expand Down Expand Up @@ -516,8 +510,6 @@ case class TransformKeys(
function: Expression)
extends MapBasedSimpleHigherOrderFunction with CodegenFallback {

override def nullable: Boolean = argument.nullable

@transient lazy val MapType(keyType, valueType, valueContainsNull) = argument.dataType

override def dataType: DataType = MapType(function.dataType, valueType, valueContainsNull)
Expand Down Expand Up @@ -568,8 +560,6 @@ case class TransformValues(
function: Expression)
extends MapBasedSimpleHigherOrderFunction with CodegenFallback {

override def nullable: Boolean = argument.nullable

@transient lazy val MapType(keyType, valueType, valueContainsNull) = argument.dataType

override def dataType: DataType = MapType(keyType, function.dataType, function.nullable)
Expand Down Expand Up @@ -638,8 +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 @@ -810,8 +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