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

Class AggregationExecutor

java.lang.Object

org.apache.iotdb.db.query.executor.AggregationExecutor

public class AggregationExecutor
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
protected AggregateResult[]	aggregateResultList
protected java.util.List<java.lang.String>	aggregations
protected boolean	ascending
protected QueryContext	context
protected java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>	dataTypes
protected org.apache.iotdb.tsfile.read.expression.IExpression	expression

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AggregationExecutor(QueryContext context, AggregationPlan aggregationPlan)

Method Summary

Modifier and Type	Method	Description
protected void	aggregateOneAlignedSeries(AlignedPath alignedPath, java.util.List<java.util.List<java.lang.Integer>> subIndexes, java.util.Set<java.lang.String> allMeasurementsInDevice, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)
static void	aggregateOneAlignedSeries(AlignedPath alignedPath, java.util.Set<java.lang.String> measurements, QueryContext context, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType tsDataType, java.util.List<java.util.List<AggregateResult>> ascAggregateResultList, java.util.List<java.util.List<AggregateResult>> descAggregateResultList, TsFileFilter fileFilter, boolean ascending)
protected void	aggregateOneSeries(org.apache.iotdb.commons.path.PartialPath seriesPath, java.util.List<java.lang.Integer> indexes, java.util.Set<java.lang.String> allMeasurementsInDevice, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)	get aggregation result for one series
static void	aggregateOneSeries(org.apache.iotdb.commons.path.PartialPath seriesPath, java.util.Set<java.lang.String> measurements, QueryContext context, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType tsDataType, java.util.List<AggregateResult> ascAggregateResultList, java.util.List<AggregateResult> descAggregateResultList, TsFileFilter fileFilter, boolean ascending)
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	executeWithoutValueFilter(AggregationPlan aggregationPlan)	execute aggregate function with only time filter or no filter.
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	executeWithValueFilter(AggregationPlan queryPlan)	execute aggregate function with value filter.
protected IReaderByTimestamp	getReaderByTime(org.apache.iotdb.commons.path.PartialPath path, RawDataQueryPlan queryPlan, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, QueryContext context)
protected org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator	getTimeGenerator(QueryContext context, RawDataQueryPlan queryPlan)

Methods inherited from class java.lang.Object

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

Field Detail

dataTypes

protected java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> dataTypes

aggregations

protected java.util.List<java.lang.String> aggregations

expression

protected org.apache.iotdb.tsfile.read.expression.IExpression expression

ascending

protected boolean ascending

context

protected QueryContext context

aggregateResultList

protected AggregateResult[] aggregateResultList

Constructor Detail

AggregationExecutor

protected AggregationExecutor(QueryContext context,
                              AggregationPlan aggregationPlan)

Method Detail

executeWithoutValueFilter

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet executeWithoutValueFilter(AggregationPlan aggregationPlan)
                                                                                  throws StorageEngineException,
                                                                                         java.io.IOException,
                                                                                         QueryProcessException

execute aggregate function with only time filter or no filter.

Throws:

StorageEngineException

java.io.IOException

QueryProcessException

aggregateOneSeries

protected void aggregateOneSeries(org.apache.iotdb.commons.path.PartialPath seriesPath,
                                  java.util.List<java.lang.Integer> indexes,
                                  java.util.Set<java.lang.String> allMeasurementsInDevice,
                                  org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)
                           throws java.io.IOException,
                                  QueryProcessException,
                                  StorageEngineException

get aggregation result for one series

Parameters:

timeFilter - time filter

Throws:

java.io.IOException

QueryProcessException

StorageEngineException

aggregateOneAlignedSeries

protected void aggregateOneAlignedSeries(AlignedPath alignedPath,
                                         java.util.List<java.util.List<java.lang.Integer>> subIndexes,
                                         java.util.Set<java.lang.String> allMeasurementsInDevice,
                                         org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)
                                  throws java.io.IOException,
                                         QueryProcessException,
                                         StorageEngineException

Throws:

java.io.IOException

QueryProcessException

StorageEngineException

aggregateOneSeries

public static void aggregateOneSeries(org.apache.iotdb.commons.path.PartialPath seriesPath,
                                      java.util.Set<java.lang.String> measurements,
                                      QueryContext context,
                                      org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                                      org.apache.iotdb.tsfile.file.metadata.enums.TSDataType tsDataType,
                                      java.util.List<AggregateResult> ascAggregateResultList,
                                      java.util.List<AggregateResult> descAggregateResultList,
                                      TsFileFilter fileFilter,
                                      boolean ascending)
                               throws StorageEngineException,
                                      java.io.IOException,
                                      QueryProcessException

Throws:

StorageEngineException

java.io.IOException

QueryProcessException

aggregateOneAlignedSeries

public static void aggregateOneAlignedSeries(AlignedPath alignedPath,
                                             java.util.Set<java.lang.String> measurements,
                                             QueryContext context,
                                             org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                                             org.apache.iotdb.tsfile.file.metadata.enums.TSDataType tsDataType,
                                             java.util.List<java.util.List<AggregateResult>> ascAggregateResultList,
                                             java.util.List<java.util.List<AggregateResult>> descAggregateResultList,
                                             TsFileFilter fileFilter,
                                             boolean ascending)
                                      throws StorageEngineException,
                                             java.io.IOException,
                                             QueryProcessException

Throws:

StorageEngineException

java.io.IOException

QueryProcessException

executeWithValueFilter

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet executeWithValueFilter(AggregationPlan queryPlan)
                                                                               throws StorageEngineException,
                                                                                      java.io.IOException,
                                                                                      QueryProcessException

execute aggregate function with value filter.

Throws:

StorageEngineException

java.io.IOException

QueryProcessException

getTimeGenerator

protected org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator getTimeGenerator(QueryContext context,
                                                                                          RawDataQueryPlan queryPlan)
                                                                                   throws StorageEngineException

Throws:

StorageEngineException

getReaderByTime

protected IReaderByTimestamp getReaderByTime(org.apache.iotdb.commons.path.PartialPath path,
                                             RawDataQueryPlan queryPlan,
                                             org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                                             QueryContext context)
                                      throws StorageEngineException,
                                             QueryProcessException

Throws:

StorageEngineException

QueryProcessException