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

Class LocalGroupByExecutor

java.lang.Object

org.apache.iotdb.db.query.executor.groupby.impl.LocalGroupByExecutor

All Implemented Interfaces:

GroupByExecutor

public class LocalGroupByExecutor
extends java.lang.Object
implements GroupByExecutor

Constructor Summary

Constructors

Constructor	Description
LocalGroupByExecutor(org.apache.iotdb.commons.path.PartialPath path, java.util.Set<java.lang.String> allSensors, QueryContext context, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, TsFileFilter fileFilter, boolean ascending)

Method Summary

Modifier and Type	Method	Description
void	addAggregateResult(AggregateResult aggrResult)	add reusable result cache in executor
java.util.List<AggregateResult>	calcResult(long curStartTime, long curEndTime)	calculate result in [curStartTime, curEndTime)
boolean	isEmpty()
org.apache.iotdb.tsfile.utils.Pair<java.lang.Long,java.lang.Object>	peekNextNotNullValue(long nextStartTime, long nextEndTime)

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalGroupByExecutor

public LocalGroupByExecutor(org.apache.iotdb.commons.path.PartialPath path,
                            java.util.Set<java.lang.String> allSensors,
                            QueryContext context,
                            org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                            TsFileFilter fileFilter,
                            boolean ascending)
                     throws StorageEngineException,
                            QueryProcessException

Throws:

StorageEngineException

QueryProcessException

Method Detail

isEmpty

public boolean isEmpty()
                throws java.io.IOException

Throws:

java.io.IOException

addAggregateResult

public void addAggregateResult(AggregateResult aggrResult)

Description copied from interface: GroupByExecutor

add reusable result cache in executor

Specified by:

addAggregateResult in interface GroupByExecutor

calcResult

public java.util.List<AggregateResult> calcResult(long curStartTime,
                                                  long curEndTime)
                                           throws java.io.IOException,
                                                  QueryProcessException

Description copied from interface: GroupByExecutor

calculate result in [curStartTime, curEndTime)

Specified by:

calcResult in interface GroupByExecutor

Throws:

java.io.IOException

QueryProcessException

peekNextNotNullValue

public org.apache.iotdb.tsfile.utils.Pair<java.lang.Long,java.lang.Object> peekNextNotNullValue(long nextStartTime,
                                                                                                      long nextEndTime)
                                                                                               throws java.io.IOException

Specified by:

peekNextNotNullValue in interface GroupByExecutor

Throws:

java.io.IOException