Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4355#discussion_r135534660
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/AggregationCodeGenerator.scala
---
@@ -161,13 +182,119 @@ class AggregationCodeGenerator(
}
}
+ /**
+ * Create DataView Term, for example, acc1_map_dataview.
+ *
+ * @param aggIndex index of aggregate function
+ * @param fieldName field name of DataView
+ * @return term to access [[MapView]] or [[ListView]]
+ */
+ def createDataViewTerm(aggIndex: Int, fieldName: String): String = {
+ s"acc${aggIndex}_${fieldName}_dataview"
+ }
+
+ /**
+ * Adds a reusable [[org.apache.flink.table.api.dataview.DataView]]
to the open, cleanup,
+ * close and member area of the generated function.
+ *
+ */
+ def addReusableDataViews: Unit = {
--- End diff --
Add parentheses to method. Only methods without side-effects should have no
parentheses.
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