cloud-fan commented on a change in pull request #25461: [SPARK-28741][SQL]Throw
exceptions when casting to integers causes overflow
URL: https://github.com/apache/spark/pull/25461#discussion_r315756385
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/numerics.scala
##########
@@ -107,4 +109,85 @@ object LongExactNumeric extends LongIsIntegral with
Ordering.LongOrdering {
override def times(x: Long, y: Long): Long = Math.multiplyExact(x, y)
override def negate(x: Long): Long = Math.negateExact(x)
+
+ override def toInt(x: Long): Int =
+ if (x == x.toInt) {
+ x.toInt
+ } else {
+ throw new ArithmeticException(s"Casting $x to Int causes overflow.")
+ }
+}
+
+object FloatExactNumeric extends FloatIsFractional with Ordering.FloatOrdering
{
+ private def exceptionMessage(x: Float, dataType: String): String =
Review comment:
one way to do it
```
def fail[T](): T = {
throw ...
}
```
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