uros-db commented on code in PR #45856:
URL: https://github.com/apache/spark/pull/45856#discussion_r1550948477
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala:
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@@ -543,25 +543,52 @@ case class RLike(left: Expression, right: Expression)
extends StringRegexExpress
case class StringSplit(str: Expression, regex: Expression, limit: Expression)
extends TernaryExpression with ImplicitCastInputTypes with NullIntolerant {
- override def dataType: DataType = ArrayType(StringType, containsNull = false)
- override def inputTypes: Seq[DataType] = Seq(StringType, StringType,
IntegerType)
+ override def dataType: DataType = ArrayType(str.dataType, containsNull =
false)
+ override def inputTypes: Seq[AbstractDataType] =
+ Seq(StringTypeAnyCollation, StringTypeAnyCollation, IntegerType)
+
+ override def checkInputDataTypes(): TypeCheckResult = str.dataType match {
+ case s: StringType =>
+ if (s.supportsBinaryEquality || s.isUTF8BinaryLcaseCollation) {
+ super.checkInputDataTypes()
+ } else {
+ TypeCheckFailure("Unsupported collation: " +
+ CollationFactory.fetchCollation(s.collationId).collationName)
+ }
+ case _ => super.checkInputDataTypes()
+ }
+
override def first: Expression = str
override def second: Expression = regex
override def third: Expression = limit
+ private def collationId = str.dataType.asInstanceOf[StringType].collationId
Review Comment:
use:
`final lazy val collationId: Int =
str.dataType.asInstanceOf[StringType].collationId`
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