org.teiid.query.processor.relational

Class PlanExecutionNode

java.lang.Object

org.teiid.query.processor.relational.RelationalNode

org.teiid.query.processor.relational.SubqueryAwareRelationalNode

org.teiid.query.processor.relational.PlanExecutionNode

All Implemented Interfaces:

Cloneable, BatchCollector.BatchProducer

Direct Known Subclasses:

DependentProcedureExecutionNode, InsertPlanExecutionNode

public class PlanExecutionNode
extends SubqueryAwareRelationalNode

Field Summary

Fields inherited from class org.teiid.query.processor.relational.RelationalNode

childCount

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PlanExecutionNode()
	PlanExecutionNode(int nodeID)

Method Summary

Modifier and Type	Method and Description
Object	clone() All the implementation of Cloneable interface need to implement clone() method.
void	closeDirect()
protected void	copyTo(PlanExecutionNode target)
PlanNode	getDescriptionProperties()
protected void	getNodeString(StringBuffer str)
Collection<? extends LanguageObject>	getObjects()
ProcessorPlan	getProcessorPlan()
protected boolean	hasNextCommand()
TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	open()
protected boolean	openPlanImmediately()
protected boolean	prepareNextCommand()
Boolean	requiresTransaction(boolean transactionalReads)
void	reset()
void	setProcessorPlan(ProcessorPlan plan)

Methods inherited from class org.teiid.query.processor.relational.SubqueryAwareRelationalNode

getEvaluator, requiresTransaction, setReferenceValues

Methods inherited from class org.teiid.query.processor.relational.RelationalNode

addBatchRow, addChild, close, copyTo, createLookupMap, getBatchSize, getBuffer, getBufferDirect, getBufferManager, getChildCount, getChildren, getClassName, getConnectionID, getContext, getDataManager, getElements, getEstimateNodeCardinality, getID, getNodeStatistics, getOutputElements, getParent, getProjectionIndexes, hasBuffer, hasPendingRows, initialize, isBatchFull, isClosed, isLastBatch, nextBatch, nodeToString, projectTuple, projectTuple, pullBatch, setContext, setElements, setEstimateDepAccessCardinality, setEstimateDepJoinCost, setEstimateJoinCost, setEstimateNodeCardinality, setEstimateNodeSetSize, setID, setParent, terminateBatches, toString, unwrapException

Methods inherited from class java.lang.Object

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

Constructor Detail

PlanExecutionNode

protected PlanExecutionNode()

PlanExecutionNode

public PlanExecutionNode(int nodeID)

Method Detail

reset

public void reset()

Overrides:

reset in class SubqueryAwareRelationalNode

setProcessorPlan

public void setProcessorPlan(ProcessorPlan plan)

open

public void open()
          throws TeiidComponentException,
                 TeiidProcessingException

Overrides:

open in class RelationalNode

Throws:

TeiidComponentException

TeiidProcessingException

openPlanImmediately

protected boolean openPlanImmediately()

nextBatchDirect

public TupleBatch nextBatchDirect()
                           throws BlockedException,
                                  TeiidComponentException,
                                  TeiidProcessingException

Description copied from class: RelationalNode

Template method for subclasses to implement.

Specified by:

nextBatchDirect in class RelationalNode

Returns:

Throws:

BlockedException

TeiidComponentException

TeiidProcessingException - if exception related to user input occured

prepareNextCommand

protected boolean prepareNextCommand()
                              throws BlockedException,
                                     TeiidComponentException,
                                     TeiidProcessingException

Throws:

BlockedException

TeiidComponentException

TeiidProcessingException

hasNextCommand

protected boolean hasNextCommand()

closeDirect

public void closeDirect()

Overrides:

closeDirect in class SubqueryAwareRelationalNode

getNodeString

protected void getNodeString(StringBuffer str)

Overrides:

getNodeString in class RelationalNode

getProcessorPlan

public ProcessorPlan getProcessorPlan()

clone

public Object clone()

Description copied from class: RelationalNode

All the implementation of Cloneable interface need to implement clone() method. The plan is only clonable in the pre-execution stage, not the execution state (things like program state, result sets, etc). It's only safe to call that method in between query processings, in other words, it's only safe to call clone() on a plan after nextTuple() returns null, meaning the plan has finished processing.

Specified by:

clone in class RelationalNode

copyTo

protected void copyTo(PlanExecutionNode target)

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class RelationalNode

requiresTransaction

public Boolean requiresTransaction(boolean transactionalReads)

Overrides:

requiresTransaction in class SubqueryAwareRelationalNode

Returns:

true if required, false if not required, and null if a single source command is issued and a transaction may be needed.

getObjects

public Collection<? extends LanguageObject> getObjects()

Specified by:

getObjects in class SubqueryAwareRelationalNode