[GitHub] flink issue #2792: [FLINK-4937] [Table] Add incremental group window aggrega...

[sunjincheng121]

Github user sunjincheng121 commented on the issue:

    https://github.com/apache/flink/pull/2792
  
    Hi,@fhueske  thanks a lot for the review. I have updated the PR according 
to your comments. The change list:
     1. Amend code style（Including Class / Object / Trait / Method）
     2. Refactoring "createOperatorFunctionsForIncrementalAggregates" and 
"createOperatorFunctionsForAggregates"
     3. Move all "create*Window*Function" “isTimeWindow” and 
"computeWindowStartEndPropertyPos" methods from DataStreamAggregate and 
DataSetAggregate to AggregateUtil
     4. Make “IncrementalAggregateReduceFunction”  a bit more lightweight.


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