org.teiid.query.processor.relational
Class GroupingNode

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

All Implemented Interfaces:

java.lang.Cloneable, BatchCollector.BatchProducer

public class GroupingNode
extends RelationalNode

Constructor Summary

GroupingNode(int nodeID)

Method Summary

java.lang.Object	clone() All the implementation of Cloneable interface need to implement clone() method.
void	closeDirect()
TupleSource	getCollectionTupleSource()
PlanNode	getDescriptionProperties()
protected void	getNodeString(java.lang.StringBuffer str)
void	initialize(CommandContext context, BufferManager bufferManager, ProcessorDataManager dataMgr)
TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	reset()
void	setGroupingElements(java.util.List groupingElements) Called by the planner to initialize the grouping node.
void	setRemoveDuplicates(boolean removeDuplicates)

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

GroupingNode

public GroupingNode(int nodeID)

Method Detail

reset

public void reset()

Overrides:

reset in class RelationalNode

setRemoveDuplicates

public void setRemoveDuplicates(boolean removeDuplicates)

setGroupingElements

public void setGroupingElements(java.util.List groupingElements)

Called by the planner to initialize the grouping node. Set the list of grouping expressions - these may be either elements or expressions and the list itself may be null to indicate an implied grouping on all columns

Parameters:

groupingElements -

Since:

4.2

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

getCollectionTupleSource

public TupleSource getCollectionTupleSource()

closeDirect

public void closeDirect()

Overrides:

closeDirect in class RelationalNode

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

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class RelationalNode