Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4355#discussion_r130112099
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/UserDefinedFunctionUtils.scala
---
@@ -307,6 +312,119 @@ object UserDefinedFunctionUtils {
//
----------------------------------------------------------------------------------------------
/**
+ * get data view type information from accumulator constructor.
+ *
+ * @param aggFun aggregate function
+ * @return the data view specification
+ */
+ def getDataViewTypeInfoFromConstructor(
+ aggFun: AggregateFunction[_, _])
+ : mutable.HashMap[String, TypeInformation[_]] = {
+
+ val resultMap = new mutable.HashMap[String, TypeInformation[_]]
+ val acc = aggFun.createAccumulator()
+ val fields: util.List[Field] =
TypeExtractor.getAllDeclaredFields(acc.getClass, true)
--- End diff --
Couldn't you instead take the accumulator type information and use the
field information?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
