Package org.apache.iotdb.db.mpp.execution.operator.source

Class SeriesAggregationScanOperator

java.lang.Object

org.apache.iotdb.db.mpp.execution.operator.source.AbstractSeriesAggregationScanOperator

org.apache.iotdb.db.mpp.execution.operator.source.SeriesAggregationScanOperator

All Implemented Interfaces:

java.lang.AutoCloseable, Operator, DataSourceOperator, SourceOperator

public class SeriesAggregationScanOperator
extends AbstractSeriesAggregationScanOperator

This operator is responsible to do the aggregation calculation for one series based on global time range and time split parameter.

Every time next() is invoked, one tsBlock which contains many time windows will be returned. In sliding window situation, current time window is a pre-aggregation window. If there is no time split parameter, i.e. aggregation without groupBy, just one tsBlock will be returned.

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.execution.operator.source.AbstractSeriesAggregationScanOperator

aggregators, ascending, curTimeRange, finished, inputTsBlock, isGroupByQuery, operatorContext, resultTsBlockBuilder, seriesScanUtil, sourceId, subSensorSize, timeRangeIterator

Fields inherited from interface org.apache.iotdb.db.mpp.execution.operator.Operator

NOT_BLOCKED

Constructor Summary

Constructors

Constructor	Description
SeriesAggregationScanOperator(PlanNodeId sourceId, org.apache.iotdb.commons.path.PartialPath seriesPath, java.util.Set<java.lang.String> allSensors, OperatorContext context, java.util.List<Aggregator> aggregators, ITimeRangeIterator timeRangeIterator, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, boolean ascending, GroupByTimeParameter groupByTimeParameter, long maxReturnSize)

Method Summary

Methods inherited from class org.apache.iotdb.db.mpp.execution.operator.source.AbstractSeriesAggregationScanOperator

calcFromCachedData, calcFromStatistics, calculateMaxPeekMemory, calculateMaxReturnSize, calculateNextAggregationResult, calculateRetainedSizeAfterCallingNext, canUseCurrentChunkStatistics, canUseCurrentFileStatistics, canUseCurrentPageStatistics, getOperatorContext, getSourceId, hasNext, initQueryDataSource, isFinished, next, readAndCalcFromChunk, readAndCalcFromFile, readAndCalcFromPage, updateResultTsBlock

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iotdb.db.mpp.execution.operator.Operator

close, isBlocked

Constructor Detail

SeriesAggregationScanOperator

public SeriesAggregationScanOperator(PlanNodeId sourceId,
                                     org.apache.iotdb.commons.path.PartialPath seriesPath,
                                     java.util.Set<java.lang.String> allSensors,
                                     OperatorContext context,
                                     java.util.List<Aggregator> aggregators,
                                     ITimeRangeIterator timeRangeIterator,
                                     org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                                     boolean ascending,
                                     GroupByTimeParameter groupByTimeParameter,
                                     long maxReturnSize)