[
https://issues.apache.org/jira/browse/FLINK-5881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15903164#comment-15903164
]
ASF GitHub Bot commented on FLINK-5881:
---------------------------------------
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.`
> ScalarFunction(UDF) should support variable types and variable arguments
> -------------------------------------------------------------------------
>
> Key: FLINK-5881
> URL: https://issues.apache.org/jira/browse/FLINK-5881
> Project: Flink
> Issue Type: Sub-task
> Reporter: Zhuoluo Yang
> Assignee: Zhuoluo Yang
>
> As a sub-task of FLINK-5826. We would like to support the ScalarFunction
> first and make the review a little bit easier.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
