Package org.apache.iotdb.db.mpp.aggregation

Class MaxTimeDescAccumulator

java.lang.Object

org.apache.iotdb.db.mpp.aggregation.MaxTimeAccumulator

org.apache.iotdb.db.mpp.aggregation.MaxTimeDescAccumulator

All Implemented Interfaces:

Accumulator

public class MaxTimeDescAccumulator
extends MaxTimeAccumulator

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.aggregation.MaxTimeAccumulator

initResult, maxTime

Constructor Summary

Constructors

Constructor	Description
MaxTimeDescAccumulator()

Method Summary

Modifier and Type	Method	Description
int	addInput(org.apache.iotdb.tsfile.read.common.block.column.Column[] column, org.apache.iotdb.tsfile.read.common.TimeRange timeRange)	Column should be like: | Time | Value |
boolean	hasFinalResult()	This method can only be used in seriesAggregateScanOperator.

Methods inherited from class org.apache.iotdb.db.mpp.aggregation.MaxTimeAccumulator

addIntermediate, addStatistics, getFinalType, getIntermediateType, outputFinal, outputIntermediate, reset, setFinal, updateMaxTime

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxTimeDescAccumulator

public MaxTimeDescAccumulator()

Method Detail

addInput

public int addInput(org.apache.iotdb.tsfile.read.common.block.column.Column[] column,
                    org.apache.iotdb.tsfile.read.common.TimeRange timeRange)

Description copied from interface: Accumulator

Column should be like: | Time | Value |

Return the last read row index of current timeColumn

Specified by:

addInput in interface Accumulator

Overrides:

addInput in class MaxTimeAccumulator

hasFinalResult

public boolean hasFinalResult()

Description copied from interface: Accumulator

This method can only be used in seriesAggregateScanOperator. For first_value or last_value in decreasing order, we can get final result by the first record.

Specified by:

hasFinalResult in interface Accumulator

Overrides:

hasFinalResult in class MaxTimeAccumulator