dianfu commented on a change in pull request #7152: [FLINK-10958] [table] Add
overload support for user defined function
URL: https://github.com/apache/flink/pull/7152#discussion_r235636582
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File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/UserDefinedFunctionUtils.scala
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@@ -719,19 +750,28 @@ object UserDefinedFunctionUtils {
* Compares parameter candidate classes with expected classes. If true, the
parameters match.
* Candidate can be null (acts as a wildcard).
*/
+ private def parameterTypeApplicable(candidate: Class[_], expected:
Class[_]): Boolean =
+ parameterTypeEquals(candidate, expected) ||
parameterTypeSubClassOf(candidate, expected)
+
Review comment:
It's all right as `parameterTypeSubClassOf` is only used in
`parameterTypeApplicable `.
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