org.teiid.query.processor.relational

Class TextTableNode

java.lang.Object

org.teiid.query.processor.relational.RelationalNode

org.teiid.query.processor.relational.SubqueryAwareRelationalNode

org.teiid.query.processor.relational.TextTableNode

All Implemented Interfaces:

Cloneable, BatchCollector.BatchProducer

public class TextTableNode
extends SubqueryAwareRelationalNode

Handles text file processing. TODO: allow for a configurable line terminator

Field Summary

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

childCount

Constructor Summary

Constructors

Constructor and Description
TextTableNode(int nodeID)

Method Summary

Modifier and Type	Method and Description
TextTableNode	clone() All the implementation of Cloneable interface need to implement clone() method.
void	closeDirect()
PlanNode	getDescriptionProperties()
Collection<? extends LanguageObject>	getObjects()
void	initialize(CommandContext context, BufferManager bufferManager, ProcessorDataManager dataMgr)
protected TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	open()
void	reset()
void	setTable(TextTable table)

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

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, getNodeString, 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

TextTableNode

public TextTableNode(int nodeID)

Method Detail

initialize

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

Overrides:

initialize in class RelationalNode

closeDirect

public void closeDirect()

Overrides:

closeDirect in class SubqueryAwareRelationalNode

reset

public void reset()

Overrides:

reset in class SubqueryAwareRelationalNode

setTable

public void setTable(TextTable table)

clone

public TextTableNode 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

open

public void open()
          throws TeiidComponentException,
                 TeiidProcessingException

Overrides:

open in class RelationalNode

Throws:

TeiidComponentException

TeiidProcessingException

nextBatchDirect

protected 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

getObjects

public Collection<? extends LanguageObject> getObjects()

Specified by:

getObjects in class SubqueryAwareRelationalNode

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class RelationalNode