yaooqinn commented on a change in pull request #26995: [SPARK-30341][SQL]
Overflow check for interval arithmetic operations
URL: https://github.com/apache/spark/pull/26995#discussion_r362391445
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/intervalExpressions.scala
##########
@@ -110,49 +110,51 @@ object ExtractIntervalPart {
}
}
-abstract class IntervalNumOperation(
- interval: Expression,
- num: Expression,
- operation: (CalendarInterval, Double) => CalendarInterval,
- operationName: String)
+abstract class IntervalNumOperation(interval: Expression, num: Expression,
operationName: String)
extends BinaryExpression with ImplicitCastInputTypes with Serializable {
+
override def left: Expression = interval
override def right: Expression = num
override def inputTypes: Seq[AbstractDataType] = Seq(CalendarIntervalType,
DoubleType)
+
override def dataType: DataType = CalendarIntervalType
override def nullable: Boolean = true
- override def nullSafeEval(interval: Any, num: Any): Any = {
- try {
- operation(interval.asInstanceOf[CalendarInterval],
num.asInstanceOf[Double])
- } catch {
- case _: java.lang.ArithmeticException => null
- }
+ override def nullSafeEval(interval: Any, num: Any): Any = operationName
match {
+ case "multiply" =>
+ multiplyExact(interval.asInstanceOf[CalendarInterval],
num.asInstanceOf[Double])
+ case "divide" =>
+ if (num == 0) return null
Review comment:
https://github.com/apache/spark/blob/b6793816c16da1eea33dbb9d63e90a9b25394d45/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala#L362
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