Package org.apache.iotdb.db.query.executor.groupby

Interface GroupByExecutor

All Known Implementing Classes:

LocalGroupByExecutor

public interface GroupByExecutor

Each executor calculates results of all aggregations on this series

Method Summary

Modifier and Type	Method	Description
void	addAggregateResult(AggregateResult aggrResult)	add reusable result cache in executor
java.util.List<AggregateResult>	calcResult(long curStartTime, long curEndTime)	calculate result in [curStartTime, curEndTime)
org.apache.iotdb.tsfile.utils.Pair<java.lang.Long,java.lang.Object>	peekNextNotNullValue(long nextStartTime, long nextEndTime)

Method Detail

addAggregateResult

void addAggregateResult(AggregateResult aggrResult)

add reusable result cache in executor

calcResult

java.util.List<AggregateResult> calcResult(long curStartTime,
                                           long curEndTime)
                                    throws java.io.IOException,
                                           QueryProcessException

calculate result in [curStartTime, curEndTime)

Throws:

java.io.IOException

QueryProcessException

peekNextNotNullValue

org.apache.iotdb.tsfile.utils.Pair<java.lang.Long,java.lang.Object> peekNextNotNullValue(long nextStartTime,
                                                                                               long nextEndTime)
                                                                                        throws java.io.IOException

Throws:

java.io.IOException