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From wuchong <...@git.apache.org>
Subject [GitHub] flink pull request #3266: [FLINK-5219][TableAPI&SQL] Add non-grouped session...
Date Wed, 08 Feb 2017 06:48:38 GMT
Github user wuchong commented on a diff in the pull request:

    --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/aggregate/DataSetSessionWindowAggregatePreProcessor.scala
    @@ -19,30 +19,36 @@ package org.apache.flink.table.runtime.aggregate
     import java.lang.Iterable
    -import org.apache.flink.api.common.functions.RichGroupCombineFunction
    +import org.apache.flink.api.common.functions.{AbstractRichFunction, GroupCombineFunction,
     import org.apache.flink.api.common.typeinfo.TypeInformation
     import org.apache.flink.api.java.typeutils.ResultTypeQueryable
     import org.apache.flink.types.Row
     import org.apache.flink.configuration.Configuration
     import org.apache.flink.util.{Collector, Preconditions}
    -  * This wraps the aggregate logic inside of
    -  * [[org.apache.flink.api.java.operators.GroupCombineOperator]].
    +  * It wraps the aggregate logic inside of
    +  * [[org.apache.flink.api.java.operators.GroupCombineOperator]] and
    +  * [[org.apache.flink.api.java.operators.MapPartitionOperator]] It is used for
    +  * Sessiontime-window on batch.
       * @param aggregates The aggregate functions.
       * @param groupingKeys The indexes of the grouping fields.
       * @param intermediateRowArity The intermediate row field count.
       * @param gap  Session time window gap.
       * @param intermediateRowType Intermediate row data type.
    -class DataSetSessionWindowAggregateCombineGroupFunction(
    +class DataSetSessionWindowAggregatePreProcessor(
         aggregates: Array[Aggregate[_ <: Any]],
         groupingKeys: Array[Int],
         intermediateRowArity: Int,
         gap: Long,
         @transient intermediateRowType: TypeInformation[Row])
    -  extends RichGroupCombineFunction[Row,Row] with ResultTypeQueryable[Row] {
    +  extends AbstractRichFunction
    +    with MapPartitionFunction[Row,Row]
    --- End diff --
    I would like to indent `with` and `extends` on the same indent.

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