org.teiid.query.processor.relational

Class SelectNode

java.lang.Object

org.teiid.query.processor.relational.RelationalNode

org.teiid.query.processor.relational.SubqueryAwareRelationalNode

org.teiid.query.processor.relational.SelectNode

All Implemented Interfaces:

Cloneable, BatchCollector.BatchProducer

public class SelectNode
extends SubqueryAwareRelationalNode

Field Summary

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

childCount

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
Object	clone() All the implementation of Cloneable interface need to implement clone() method.
protected void	copyTo(SelectNode target)
Criteria	getCriteria()
PlanNode	getDescriptionProperties()
protected void	getNodeString(StringBuffer str)
Collection<? extends LanguageObject>	getObjects()
void	initialize(CommandContext context, BufferManager bufferManager, ProcessorDataManager dataMgr)
TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	open()
void	reset()
void	setCriteria(Criteria criteria)
void	setProjectedExpressions(List<Expression> projectedExpressions)
void	setShouldEvaluateExpressions(boolean shouldEvaluate)

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

closeDirect, getEvaluator, requiresTransaction, 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, 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

SelectNode

protected SelectNode()

SelectNode

public SelectNode(int nodeID)

Method Detail

reset

public void reset()

Overrides:

reset in class SubqueryAwareRelationalNode

setCriteria

public void setCriteria(Criteria criteria)

getCriteria

public Criteria getCriteria()

setProjectedExpressions

public void setProjectedExpressions(List<Expression> projectedExpressions)

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

See Also:

RelationalNode.nextBatchDirect()

getNodeString

protected void getNodeString(StringBuffer str)

Overrides:

getNodeString in class RelationalNode

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(SelectNode target)

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class RelationalNode

getObjects

public Collection<? extends LanguageObject> getObjects()

Specified by:

getObjects in class SubqueryAwareRelationalNode

setShouldEvaluateExpressions

public void setShouldEvaluateExpressions(boolean shouldEvaluate)

open

public void open()
          throws TeiidComponentException,
                 TeiidProcessingException

Overrides:

open in class RelationalNode

Throws:

TeiidComponentException

TeiidProcessingException