gengliangwang commented on code in PR #39577:
URL: https://github.com/apache/spark/pull/39577#discussion_r1073978272
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/maskExpressions.scala:
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@@ -207,6 +204,37 @@ case class Mask(
s"transformInput($input, $upperChar, $lowerChar, $digitChar,
$otherChar);"
})
+ /**
+ * Short hand for generating quinary evaluation code. If either of the
sub-expressions is null,
+ * the result of this computation is assumed to be null.
+ *
+ * @param f
+ * function that accepts the 5 non-null evaluation result names of
children and returns Java
+ * code to compute the output.
+ */
+ override protected def nullSafeCodeGen(
Review Comment:
Shall we put this into `QuinaryExpression` instead?
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