Package org.apache.flink.table.runtime.operators.deduplicate.utils

Class RowTimeDeduplicateFunctionHelper

java.lang.Object
org.apache.flink.table.runtime.operators.deduplicate.utils.RowTimeDeduplicateFunctionHelper
public abstract class RowTimeDeduplicateFunctionHelper extends Object
A helper to deduplicate data with row time in RowTimeDeduplicateFunction and AsyncStateRowTimeDeduplicateFunction.

  • Constructor Summary

    Constructors
    Constructor
    Description
    RowTimeDeduplicateFunctionHelper(boolean generateUpdateBefore, boolean generateInsert, int rowtimeIndex, boolean keepLastRow)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    deduplicateOnRowTime(org.apache.flink.table.data.RowData currentRow, org.apache.flink.table.data.RowData prevRow, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
    Processes element to deduplicate on keys with row time semantic, sends current element if it is last or first row, retracts previous element if needed.
    protected abstract void
    updateState(org.apache.flink.table.data.RowData currentRow)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • RowTimeDeduplicateFunctionHelper

      public RowTimeDeduplicateFunctionHelper(boolean generateUpdateBefore, boolean generateInsert, int rowtimeIndex, boolean keepLastRow)

  • Method Details

    • deduplicateOnRowTime

      public void deduplicateOnRowTime(org.apache.flink.table.data.RowData currentRow, @Nullable org.apache.flink.table.data.RowData prevRow, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out) throws Exception
      Processes element to deduplicate on keys with row time semantic, sends current element if it is last or first row, retracts previous element if needed.
      Parameters:
      currentRow - latest row received by deduplicate function
      prevRow - previous row received by deduplicate function. `null` if current row is the first row
      out - underlying collector
      Throws:
      Exception

    • updateState

      protected abstract void updateState(org.apache.flink.table.data.RowData currentRow) throws Exception
      Throws:
      Exception