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

Class RawDataAggregationOperator

java.lang.Object

org.apache.iotdb.db.mpp.execution.operator.process.SingleInputAggregationOperator

org.apache.iotdb.db.mpp.execution.operator.process.RawDataAggregationOperator

All Implemented Interfaces:

java.lang.AutoCloseable, Operator, ProcessOperator

public class RawDataAggregationOperator
extends SingleInputAggregationOperator

RawDataAggregationOperator is used to process raw data tsBlock input calculating using value filter. It's possible that there is more than one tsBlock input in one time interval. And it's also possible that one tsBlock can cover multiple time intervals too.

Since raw data query with value filter is processed by FilterOperator above TimeJoinOperator, there we can see RawDataAggregateOperator as a one-to-one(one input, ont output) operator.

Return aggregation result in many time intervals once.

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.execution.operator.process.SingleInputAggregationOperator

aggregators, ascending, canCallNext, child, curTimeRange, inputTsBlock, maxRetainedSize, maxReturnSize, operatorContext, resultTsBlockBuilder, timeRangeIterator

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

NOT_BLOCKED

Constructor Summary

Constructors

Constructor	Description
RawDataAggregationOperator(OperatorContext operatorContext, java.util.List<Aggregator> aggregators, ITimeRangeIterator timeRangeIterator, Operator child, boolean ascending, long maxReturnSize)

Method Summary

Modifier and Type	Method	Description
protected boolean	calculateNextAggregationResult()

Methods inherited from class org.apache.iotdb.db.mpp.execution.operator.process.SingleInputAggregationOperator

calculateMaxPeekMemory, calculateMaxReturnSize, calculateRetainedSizeAfterCallingNext, close, getOperatorContext, hasNext, isBlocked, isFinished, next, updateResultTsBlock

Methods inherited from class java.lang.Object

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

Constructor Detail

RawDataAggregationOperator

public RawDataAggregationOperator(OperatorContext operatorContext,
                                  java.util.List<Aggregator> aggregators,
                                  ITimeRangeIterator timeRangeIterator,
                                  Operator child,
                                  boolean ascending,
                                  long maxReturnSize)

Method Detail

calculateNextAggregationResult

protected boolean calculateNextAggregationResult()

Specified by:

calculateNextAggregationResult in class SingleInputAggregationOperator