org.teiid.query.processor.relational
Class PlanExecutionNode

java.lang.Object
  org.teiid.query.processor.relational.RelationalNode
      org.teiid.query.processor.relational.PlanExecutionNode

All Implemented Interfaces:

java.lang.Cloneable, BatchCollector.BatchProducer

Direct Known Subclasses:

DependentProcedureExecutionNode, InsertPlanExecutionNode

public class PlanExecutionNode
extends RelationalNode

Constructor Summary

protected	PlanExecutionNode()
	PlanExecutionNode(int nodeID)

Method Summary

java.lang.Object	clone() All the implementation of Cloneable interface need to implement clone() method.
void	closeDirect()
protected void	copy(PlanExecutionNode source, PlanExecutionNode target)
PlanNode	getDescriptionProperties()
protected void	getNodeString(java.lang.StringBuffer str)
ProcessorPlan	getProcessorPlan()
protected boolean	hasNextCommand()
TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	open()
protected boolean	openPlanImmediately()
protected boolean	prepareNextCommand()
void	reset()
void	setProcessorPlan(ProcessorPlan plan)

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

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

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 RelationalNode

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 RelationalNode

getNodeString

protected void getNodeString(java.lang.StringBuffer str)

Overrides:

getNodeString in class RelationalNode

getProcessorPlan

public ProcessorPlan getProcessorPlan()

clone

public java.lang.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

copy

protected void copy(PlanExecutionNode source,
                    PlanExecutionNode target)

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class RelationalNode