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:

java.lang.Cloneable, BatchCollector.BatchProducer

public class TextTableNode
extends SubqueryAwareRelationalNode

Handles text file processing. TODO: unix style escape handling \t \n, etc. TODO: parse using something more memory safe than strings TODO: allow for escaping with fixed parsing TODO: allow for fixed parsing without new lines TODO: allow for a configurable line terminator

Constructor Summary

TextTableNode(int nodeID)

Method Summary

TextTableNode	clone() All the implementation of Cloneable interface need to implement clone() method.
void	closeDirect()
void	initialize(CommandContext context, BufferManager bufferManager, ProcessorDataManager dataMgr)
protected TupleBatch	nextBatchDirect() Template method for subclasses to implement.
void	reset()
void	setTable(TextTable table)

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

getEvaluator, setReferenceValues

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

addBatchRow, addChild, close, copy, createLookupMap, getBatchSize, getBufferManager, getChildren, getClassName, getConnectionID, getContext, getDataManager, getDescriptionProperties, getElements, getEstimateNodeCardinality, getID, getNodeStatistics, getNodeString, 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

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

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