TJX2014 commented on a change in pull request #28534:
URL: https://github.com/apache/spark/pull/28534#discussion_r427859032
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
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@@ -401,6 +401,78 @@ case class DayOfYear(child: Expression) extends
UnaryExpression with ImplicitCas
}
}
+abstract class NumberToTimestampBase extends UnaryExpression
+ with ImplicitCastInputTypes {
+
+ protected def upScaleFactor: Long
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(LongType)
+
+ override def dataType: DataType = TimestampType
+
+ override def nullSafeEval(input: Any): Any = {
+ Math.multiplyExact(input.asInstanceOf[Long], upScaleFactor)
+ }
+
+ override protected def doGenCode(ctx: CodegenContext, ev: ExprCode):
ExprCode = {
+ defineCodeGen(ctx, ev, _ => s"java.lang.Math.multiplyExact(" +
+ s"${ev.value}, ${upScaleFactor})")
Review comment:
Ok, `${upScaleFactor}` -> `$upScaleFactor`, good job
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