Github user sunjincheng121 commented on a diff in the pull request:
https://github.com/apache/flink/pull/3574#discussion_r108596940
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/aggregate/AggregateUtil.scala
---
@@ -729,6 +747,39 @@ object AggregateUtil {
(aggFunction, accumulatorRowType, aggResultRowType)
}
+
+
+ /*
+ * Function for building the processing logic for aggregating data in
row bounded windows
+ * @param namedAggregates List of calls to aggregate functions and
their output field names
+ * @param inputType Input row type
+ * @param rowType Type info of row
+ * @param lowerBound the window boundary
+ * @return [[org.apache.flink.streaming.api.functions.ProcessFunction]]
+ */
+ private[flink] def createBoundedProcessingOverProcessFunction(
+ namedAggregates: Seq[CalcitePair[AggregateCall, String]],
+ inputType: RelDataType,
+ rowType: RowTypeInfo,
+ lowerBound: Int): ProcessFunction[Row, Row] = {
+
+ val (aggFields, aggregates) =
+ transformToAggregateFunctions(
+ namedAggregates.map(_.getKey),
+ inputType,
+ needRetraction = true)
+
+ val aggregationStateType: RowTypeInfo =
+ createDataSetAggregateBufferDataType(Array(), aggregates, inputType)
+
+ new BoundedProcessingOverRowProcessFunction(
+ aggregates,
+ aggFields, lowerBound,
+ inputType.getFieldCount,
+ aggregationStateType,
FlinkTypeFactory.toInternalRowTypeInfo(inputType))
--- End diff --
Use the new line.
`aggregationStateType, FlinkTypeFactory.toInternalRowTypeInfo(inputType) `->
```
aggregationStateType,
FlinkTypeFactory.toInternalRowTypeInfo(inputType)
```
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