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

Class MinTimeDescAccumulator

java.lang.Object

org.apache.iotdb.db.mpp.aggregation.MinTimeAccumulator

org.apache.iotdb.db.mpp.aggregation.MinTimeDescAccumulator

All Implemented Interfaces:

Accumulator

public class MinTimeDescAccumulator
extends MinTimeAccumulator

Field Summary

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

hasCandidateResult, minTime

Constructor Summary

Constructors

Constructor	Description
MinTimeDescAccumulator()

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.MinTimeAccumulator

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

Methods inherited from class java.lang.Object

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

Constructor Detail

MinTimeDescAccumulator

public MinTimeDescAccumulator()

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 MinTimeAccumulator

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 MinTimeAccumulator