Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/3389#discussion_r105182198
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/utils/UserDefinedScalarFunctions.scala
---
@@ -221,3 +223,18 @@ class Func13(prefix: String) extends ScalarFunction {
}
}
+object Func14 extends ScalarFunction {
+
+ @varargs
+ def eval(a: Int*): Int = {
+ a.sum
+ }
+}
+
+object Func15 extends ScalarFunction {
--- End diff --
This does not work:
```
object Func15 extends ScalarFunction {
@varargs
def eval(a: String, b: Int*): String = {
a + b.length
}
def eval(a: String): String = {
a
}
}
```
It leads to `Found multiple 'eval' methods which match the signature.`
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