cloud-fan commented on code in PR #42661:
URL: https://github.com/apache/spark/pull/42661#discussion_r1306954376
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/TryEval.scala:
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@@ -236,3 +236,35 @@ case class TryToBinary(
override protected def withNewChildInternal(newChild: Expression):
Expression =
this.copy(replacement = newChild)
}
+
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = "_FUNC_(class, method[, arg1[, arg2 ..]]) - This is a special
version of `reflect` that" +
+ " performs the same operation, but returns a NULL value instead of raising
an error if the invoke method thrown exception.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_('java.util.UUID', 'randomUUID');
+ c33fb387-8500-4bfa-81d2-6e0e3e930df2
+ > SELECT _FUNC_('java.util.UUID', 'fromString',
'a5cf6c42-0c85-418f-af6c-3e4e5b1328f2');
+ a5cf6c42-0c85-418f-af6c-3e4e5b1328f2
+ > SELECT _FUNC_('java.net.URLDecoder', 'decode', '%');
+ NULL
+ """,
+ since = "4.0.0",
+ group = "misc_funcs")
+// scalastyle:on line.size.limit
+case class TryReflect(params: Seq[Expression], replacement: Expression)
extends RuntimeReplaceable
+ with InheritAnalysisRules {
Review Comment:
oh I see!
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