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

Class GroupAggHelper

java.lang.Object

org.apache.flink.table.runtime.operators.aggregate.utils.GroupAggHelper

public abstract class GroupAggHelper
extends Object

A helper to do the logic of group agg.

Constructor Summary

Constructors

Constructor	Description
GroupAggHelper(RecordCounter recordCounter, boolean generateUpdateBefore, org.apache.flink.api.common.state.StateTtlConfig ttlConfig, AggsHandleFunction function, RecordEqualiser equaliser)

Method Summary

Modifier and Type	Method	Description
protected abstract void	clearAccumulatorsState()
void	processElement(org.apache.flink.table.data.RowData input, org.apache.flink.table.data.RowData currentKey, org.apache.flink.table.data.RowData accumulators, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
protected abstract void	updateAccumulatorsState(org.apache.flink.table.data.RowData accumulators)

Methods inherited from class java.lang.Object

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

Constructor Details

GroupAggHelper

public GroupAggHelper(RecordCounter recordCounter,
 boolean generateUpdateBefore,
 org.apache.flink.api.common.state.StateTtlConfig ttlConfig,
 AggsHandleFunction function,
 RecordEqualiser equaliser)

Method Details

processElement

public void processElement(org.apache.flink.table.data.RowData input,
 org.apache.flink.table.data.RowData currentKey,
 org.apache.flink.table.data.RowData accumulators,
 org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
                    throws Exception

Throws:

Exception

updateAccumulatorsState

protected abstract void updateAccumulatorsState(org.apache.flink.table.data.RowData accumulators)
                                         throws Exception

Throws:

Exception

clearAccumulatorsState

protected abstract void clearAccumulatorsState()
                                        throws Exception

Throws:

Exception