Package org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read

Class SchemaFetchScanNode

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.metedata.read.SchemaFetchScanNode

All Implemented Interfaces:

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

public class SchemaFetchScanNode
extends SourceNode

This class defines the scan task of schema fetcher.

Field Summary

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
SchemaFetchScanNode(PlanNodeId id, org.apache.iotdb.commons.path.PartialPath storageGroup, PathPatternTree patternTree, java.util.Map<java.lang.Integer,Template> templateMap)

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 SchemaFetchScanNode	deserialize(java.nio.ByteBuffer byteBuffer)
java.util.List<PlanNode>	getChildren()
java.util.List<java.lang.String>	getOutputColumnNames()
PathPatternTree	getPatternTree()
org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet	getRegionReplicaSet()
org.apache.iotdb.commons.path.PartialPath	getStorageGroup()
java.util.Map<java.lang.Integer,Template>	getTemplateMap()
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 schemaRegionReplicaSet)
java.lang.String	toString()

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

cloneWithChildren, equals, getPlanNodeId, hashCode, serialize, serialize, serializeToByteBuffer, setPlanNodeId

Methods inherited from class java.lang.Object

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

Constructor Detail

SchemaFetchScanNode

public SchemaFetchScanNode(PlanNodeId id,
                           org.apache.iotdb.commons.path.PartialPath storageGroup,
                           PathPatternTree patternTree,
                           java.util.Map<java.lang.Integer,Template> templateMap)

Method Detail

getStorageGroup

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

getPatternTree

public PathPatternTree getPatternTree()

getTemplateMap

public java.util.Map<java.lang.Integer,Template> getTemplateMap()

getChildren

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

Specified by:

getChildren 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

allowedChildCount

public int allowedChildCount()

Specified by:

allowedChildCount in class PlanNode

getOutputColumnNames

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

Specified by:

getOutputColumnNames in class PlanNode

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

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 SchemaFetchScanNode deserialize(java.nio.ByteBuffer byteBuffer)

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 schemaRegionReplicaSet)

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