Package org.apache.iotdb.db.mpp.plan.planner.plan.node.source

Class SeriesAggregationScanNode

java.lang.Object

org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNode

org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SourceNode

org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SeriesSourceNode

org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SeriesAggregationSourceNode

org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SeriesAggregationScanNode

All Implemented Interfaces:

java.lang.AutoCloseable, org.apache.iotdb.consensus.common.request.IConsensusRequest, IPartitionRelatedNode

public class SeriesAggregationScanNode
extends SeriesAggregationSourceNode

This node is responsible to do the aggregation calculation for one series. It will read the target series and calculate the aggregation result by the aggregation digest or raw data of this series.

The aggregation result will be represented as a TsBlock

This node will split data of the target series into many groups by time range and do the aggregation calculation for each group. Each result will be one row of the result TsBlock. The timestamp of each row is the start time of the time range group.

If there is no time range split parameter, the result TsBlock will only contain one row, which represent the whole aggregation result of this series. And the timestamp will be 0, which is meaningless.

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SeriesAggregationSourceNode

aggregationDescriptorList, groupByTimeParameter, scanOrder, timeFilter

Fields inherited from class org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNode

CHILD_COUNT_NO_LIMIT, NO_CHILD_ALLOWED, ONE_CHILD

Constructor Summary

Constructors

Constructor	Description
SeriesAggregationScanNode(PlanNodeId id, MeasurementPath seriesPath, java.util.List<AggregationDescriptor> aggregationDescriptorList)
SeriesAggregationScanNode(PlanNodeId id, MeasurementPath seriesPath, java.util.List<AggregationDescriptor> aggregationDescriptorList, Ordering scanOrder, GroupByTimeParameter groupByTimeParameter)
SeriesAggregationScanNode(PlanNodeId id, MeasurementPath seriesPath, java.util.List<AggregationDescriptor> aggregationDescriptorList, Ordering scanOrder, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, GroupByTimeParameter groupByTimeParameter, org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet dataRegionReplicaSet)

Method Summary

Modifier and Type	Method	Description
<R,C> R	accept(PlanVisitor<R,C> visitor, C context)
void	addChild(PlanNode child)
int	allowedChildCount()
PlanNode	clone()
void	close()
static SeriesAggregationScanNode	deserialize(java.nio.ByteBuffer byteBuffer)
boolean	equals(java.lang.Object o)
java.util.List<PlanNode>	getChildren()
GroupByTimeParameter	getGroupByTimeParameter()
java.util.List<java.lang.String>	getOutputColumnNames()
org.apache.iotdb.commons.path.PartialPath	getPartitionPath()
org.apache.iotdb.tsfile.read.filter.basic.Filter	getPartitionTimeFilter()
org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet	getRegionReplicaSet()
Ordering	getScanOrder()
MeasurementPath	getSeriesPath()
org.apache.iotdb.tsfile.read.filter.basic.Filter	getTimeFilter()
int	hashCode()
void	open()
protected void	serializeAttributes(java.io.DataOutputStream stream)
protected void	serializeAttributes(java.nio.ByteBuffer byteBuffer)
void	setRegionReplicaSet(org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet regionReplicaSet)
void	setTimeFilter(org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)
java.lang.String	toString()

Methods inherited from class org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SeriesAggregationSourceNode

getAggregationDescriptorList, setAggregationDescriptorList

Methods inherited from class org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNode

cloneWithChildren, getPlanNodeId, serialize, serialize, serializeToByteBuffer, setPlanNodeId

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SeriesAggregationScanNode

public SeriesAggregationScanNode(PlanNodeId id,
                                 MeasurementPath seriesPath,
                                 java.util.List<AggregationDescriptor> aggregationDescriptorList)

SeriesAggregationScanNode

public SeriesAggregationScanNode(PlanNodeId id,
                                 MeasurementPath seriesPath,
                                 java.util.List<AggregationDescriptor> aggregationDescriptorList,
                                 Ordering scanOrder,
                                 @Nullable
                                 GroupByTimeParameter groupByTimeParameter)

SeriesAggregationScanNode

public SeriesAggregationScanNode(PlanNodeId id,
                                 MeasurementPath seriesPath,
                                 java.util.List<AggregationDescriptor> aggregationDescriptorList,
                                 Ordering scanOrder,
                                 @Nullable
                                 org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                                 @Nullable
                                 GroupByTimeParameter groupByTimeParameter,
                                 org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet dataRegionReplicaSet)

Method Detail

getScanOrder

public Ordering getScanOrder()

Overrides:

getScanOrder in class SeriesAggregationSourceNode

getTimeFilter

@Nullable
public org.apache.iotdb.tsfile.read.filter.basic.Filter getTimeFilter()

Overrides:

getTimeFilter in class SeriesAggregationSourceNode

setTimeFilter

public void setTimeFilter(@Nullable
                          org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)

getGroupByTimeParameter

@Nullable
public GroupByTimeParameter getGroupByTimeParameter()

Overrides:

getGroupByTimeParameter in class SeriesAggregationSourceNode

getSeriesPath

public MeasurementPath getSeriesPath()

getChildren

public java.util.List<PlanNode> getChildren()

Specified by:

getChildren in class PlanNode

allowedChildCount

public int allowedChildCount()

Specified by:

allowedChildCount in class PlanNode

addChild

public void addChild(PlanNode child)

Specified by:

addChild in class PlanNode

clone

public PlanNode clone()

Specified by:

clone in class PlanNode

getOutputColumnNames

public java.util.List<java.lang.String> getOutputColumnNames()

Specified by:

getOutputColumnNames in class PlanNode

open

public void open()
          throws java.lang.Exception

Specified by:

open in class SourceNode

Throws:

java.lang.Exception

getRegionReplicaSet

public org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet getRegionReplicaSet()

setRegionReplicaSet

public void setRegionReplicaSet(org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet regionReplicaSet)

Specified by:

setRegionReplicaSet in class SourceNode

close

public void close()
           throws java.lang.Exception

Throws:

java.lang.Exception

accept

public <R,C> R accept(PlanVisitor<R,C> visitor,
                            C context)

Overrides:

accept in class PlanNode

serializeAttributes

protected void serializeAttributes(java.nio.ByteBuffer byteBuffer)

Specified by:

serializeAttributes in class PlanNode

serializeAttributes

protected void serializeAttributes(java.io.DataOutputStream stream)
                            throws java.io.IOException

Specified by:

serializeAttributes in class PlanNode

Throws:

java.io.IOException

deserialize

public static SeriesAggregationScanNode deserialize(java.nio.ByteBuffer byteBuffer)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class PlanNode

hashCode

public int hashCode()

Overrides:

hashCode in class PlanNode

getPartitionPath

public org.apache.iotdb.commons.path.PartialPath getPartitionPath()

Specified by:

getPartitionPath in class SeriesSourceNode

getPartitionTimeFilter

public org.apache.iotdb.tsfile.read.filter.basic.Filter getPartitionTimeFilter()

Specified by:

getPartitionTimeFilter in class SeriesSourceNode

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object