org.teiid.query.processor.relational
Class ProjectNode

java.lang.Object
  org.teiid.query.processor.relational.RelationalNode
      org.teiid.query.processor.relational.SubqueryAwareRelationalNode
          org.teiid.query.processor.relational.ProjectNode

All Implemented Interfaces:

java.lang.Cloneable, BatchCollector.BatchProducer

public class ProjectNode
extends SubqueryAwareRelationalNode

Constructor Summary

protected	ProjectNode()
	ProjectNode(int nodeID)

Method Summary

java.lang.Object	clone() All the implementation of Cloneable interface need to implement clone() method.
protected void	copy(ProjectNode source, ProjectNode target)
PlanNode	getDescriptionProperties()
protected void	getNodeString(java.lang.StringBuffer str)
java.util.List	getSelectSymbols() return List of select symbols
void	initialize(CommandContext context, BufferManager bufferManager, ProcessorDataManager dataMgr)
TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	reset()
void	setSelectSymbols(java.util.List symbols)

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

closeDirect, getEvaluator, setReferenceValues

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, isBatchFull, isClosed, isLastBatch, nextBatch, nodeToString, open, 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

ProjectNode

protected ProjectNode()

ProjectNode

public ProjectNode(int nodeID)

Method Detail

reset

public void reset()

Overrides:

reset in class SubqueryAwareRelationalNode

getSelectSymbols

public java.util.List getSelectSymbols()

return List of select symbols

Returns:

List of select symbols

setSelectSymbols

public void setSelectSymbols(java.util.List symbols)

initialize

public void initialize(CommandContext context,
                       BufferManager bufferManager,
                       ProcessorDataManager dataMgr)

Overrides:

initialize in class RelationalNode

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

getNodeString

protected void getNodeString(java.lang.StringBuffer str)

Overrides:

getNodeString in class RelationalNode

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(ProjectNode source,
                    ProjectNode target)

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class RelationalNode