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

Class SlidingWindowGroupByExecutor

java.lang.Object

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

Direct Known Subclasses:

EmptyQueueSlidingWindowGroupByExecutor, MonotonicQueueSlidingWindowGroupByExecutor, NormalQueueSlidingWindowGroupByExecutor, SmoothQueueSlidingWindowGroupByExecutor

public abstract class SlidingWindowGroupByExecutor
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
protected AggregateResult	aggregateResult
protected long	curEndTime
protected long	curStartTime
protected java.util.Deque<AggregateResult>	deque

Constructor Summary

Constructors

Constructor	Description
SlidingWindowGroupByExecutor(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, java.lang.String aggrFuncName, boolean ascending)

Method Summary

Modifier and Type	Method	Description
protected abstract void	evictingExpiredValue()	evicting expired element in queue and reset expired aggregateResult
AggregateResult	getAggregateResult()
protected boolean	inTimeRange(long curTime)
void	setTimeRange(long curStartTime, long curEndTime)
abstract void	update(AggregateResult aggregateResult)	update queue and aggregateResult

Methods inherited from class java.lang.Object

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

Field Detail

curStartTime

protected long curStartTime

curEndTime

protected long curEndTime

deque

protected java.util.Deque<AggregateResult> deque

aggregateResult

protected AggregateResult aggregateResult

Constructor Detail

SlidingWindowGroupByExecutor

public SlidingWindowGroupByExecutor(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                                    java.lang.String aggrFuncName,
                                    boolean ascending)

Method Detail

update

public abstract void update(AggregateResult aggregateResult)

update queue and aggregateResult

evictingExpiredValue

protected abstract void evictingExpiredValue()

evicting expired element in queue and reset expired aggregateResult

getAggregateResult

public AggregateResult getAggregateResult()

setTimeRange

public void setTimeRange(long curStartTime,
                         long curEndTime)

inTimeRange

protected boolean inTimeRange(long curTime)