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[SPARK-23939][SQL] Add transform_keys function #22013

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codeatri wants to merge 15 commits into from
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[SPARK-23939][SQL] Add transform_keys function #22013

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0a19cc4
Added Support for transform_keys function
codeatri Aug 6, 2018
12e0259
Merge branch 'master' into SPARK-23939
codeatri Aug 7, 2018
5806ac4
Addressed Review Commenst
codeatri Aug 8, 2018
150a6a5
Additional Tests containing nulls
codeatri Aug 8, 2018
9f6a8ab
nit: style
codeatri Aug 8, 2018
6526630
added additional unit test
codeatri Aug 8, 2018
f7fd231
nit:space
codeatri Aug 8, 2018
1cbaf0c
addressed review comments
codeatri Aug 9, 2018
bb52630
Merge branch 'master' into SPARK-23939
codeatri Aug 14, 2018
621213d
fix style
codeatri Aug 14, 2018
5db526b
Merge master Refactoring changes
codeatri Aug 14, 2018
e5d9b05
review comments
codeatri Aug 15, 2018
fb885f4
review comments
codeatri Aug 15, 2018
58b60b2
fix unit test
codeatri Aug 15, 2018
2f4943f
review
codeatri Aug 15, 2018
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@codeatri
codeatri committed Aug 15, 2018
commit fb885f4797e72d0c2cbfa23980199c71e0c5aaee
15 changes: 6 additions & 9 deletions ...alyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
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Expand Up @@ -518,22 +518,19 @@ case class TransformKeys(

override def nullable: Boolean = argument.nullable
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@mgaido91 mgaido91 Aug 16, 2018

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I think this can be moved to SimpleHigherOrderFunction

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@ueshin ueshin Aug 16, 2018

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makes sense.
Let's have wrap-up prs for higher-order functions after the remaining 2 prs are merged.


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

override def dataType: DataType = {
val map = argument.dataType.asInstanceOf[MapType]
MapType(function.dataType, map.valueType, map.valueContainsNull)
MapType(function.dataType, valueType, valueContainsNull)
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@mn-mikke mn-mikke Aug 15, 2018

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nit: just in one line?

}

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

override def bind(f: (Expression, Seq[(DataType, Boolean)]) => LambdaFunction): TransformKeys = {
copy(function = f(function, (keyType, false) :: (valueType, valueContainsNull) :: Nil))
}

@transient lazy val (keyVar, valueVar) = {
@transient lazy val LambdaFunction(
_, (keyVar: NamedLambdaVariable) :: (valueVar: NamedLambdaVariable) :: Nil, _) = function
(keyVar, valueVar)
}
@transient lazy val LambdaFunction(
_, (keyVar: NamedLambdaVariable) :: (valueVar: NamedLambdaVariable) :: Nil, _) = function


override def nullSafeEval(inputRow: InternalRow, argumentValue: Any): Any = {
val map = argumentValue.asInstanceOf[MapData]
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