Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3623#discussion_r112677625
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/UserDefinedFunctionUtils.scala
---
@@ -358,4 +365,123 @@ object UserDefinedFunctionUtils {
InstantiationUtil
.deserializeObject[UserDefinedFunction](byteData,
Thread.currentThread.getContextClassLoader)
}
+
+ /**
+ * Build a TableFunctionCall, a name and a sequence of params will
determine a unique
+ * [[TableFunctionCall]]
+ *
+ * @param name function name
+ * @param implicitResultType If no result type returned, it will use
this type.
+ * @param params The input expressions
+ * @return A unique [[TableFunctionCall]]
+ */
+ private[table] def buildTableFunctionCall(
+ name: String,
+ tableFunction: TableFunction[_],
+ implicitResultType: TypeInformation[_],
+ params: Expression*): TableFunctionCall = {
+ val arguments = transformLiteralExpressions(params: _*)
+ val classes = params.map { param =>
--- End diff --
This extracts the classes of the arguments, not the classes of the
arguments of the `eval()` signature.
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