org.teiid.query.processor.proc

Class ForEachRowPlan

java.lang.Object

org.teiid.query.processor.ProcessorPlan

org.teiid.query.processor.proc.ForEachRowPlan

All Implemented Interfaces:

Cloneable, BatchCollector.BatchProducer

public class ForEachRowPlan
extends ProcessorPlan

Constructor Summary

Constructors

Constructor and Description
ForEachRowPlan()

Method Summary

Modifier and Type	Method and Description
ProcessorPlan	clone() Return a safe clone of the ProcessorPlan.
void	close() Close the plan after processing.
List<Expression>	getOutputElements() Get list of resolved elements describing output columns for this plan.
void	initialize(CommandContext context, ProcessorDataManager dataMgr, BufferManager bufferMgr) Initialize the plan with some required pieces of data for making queries.
TupleBatch	nextBatch() Get a batch of results or possibly an Exception.
void	open() Open the plan for processing.
Boolean	requiresTransaction(boolean transactionalReads)
void	reset() Reset a plan so that it can be processed again.
void	setLookupMap(Map<Expression,Integer> symbolMap)
void	setParams(Map<ElementSymbol,Expression> params)
void	setQueryPlan(ProcessorPlan queryPlan)
void	setRowProcedure(ProcedurePlan rowProcedure)
void	setSingleRow(boolean singleRow)
void	setTupleSource(TupleSource tupleSource)
String	toString()

Methods inherited from class org.teiid.query.processor.ProcessorPlan

addWarning, getBuffer, getContext, getDescriptionProperties, hasBuffer, setContext

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ForEachRowPlan

public ForEachRowPlan()

Method Detail

clone

public ProcessorPlan clone()

Description copied from class: ProcessorPlan

Return a safe clone of the ProcessorPlan. A ProcessorPlan may only be safely cloned in between processings. That is, it is only safe to clone a plan before it is opened or after it is closed.

Specified by:

clone in class ProcessorPlan

Returns:

safe clone of this ProcessorPlan, as long as it is not open for processing

close

public void close()
           throws TeiidComponentException

Description copied from class: ProcessorPlan

Close the plan after processing.

Specified by:

close in interface BatchCollector.BatchProducer

Specified by:

close in class ProcessorPlan

Throws:

TeiidComponentException

getOutputElements

public List<Expression> getOutputElements()

Description copied from class: ProcessorPlan

Get list of resolved elements describing output columns for this plan.

Specified by:

getOutputElements in interface BatchCollector.BatchProducer

Specified by:

getOutputElements in class ProcessorPlan

Returns:

List of SingleElementSymbol

initialize

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

Description copied from class: ProcessorPlan

Initialize the plan with some required pieces of data for making queries. The data manager is used to make queries and the processorID must be passed with the request so the data manager can find the processor again.

Overrides:

initialize in class ProcessorPlan

Parameters:

context - Process execution context

dataMgr - Data manager reference

bufferMgr - Buffer manager reference

nextBatch

public TupleBatch nextBatch()
                     throws BlockedException,
                            TeiidComponentException,
                            TeiidProcessingException

Description copied from class: ProcessorPlan

Get a batch of results or possibly an Exception.

Specified by:

nextBatch in interface BatchCollector.BatchProducer

Specified by:

nextBatch in class ProcessorPlan

Returns:

Batch of results

Throws:

BlockedException - indicating next batch is not available yet

TeiidComponentException - for non-business rule exception

TeiidProcessingException - for business rule exception, related to user input or modeling

open

public void open()
          throws TeiidComponentException,
                 TeiidProcessingException

Description copied from class: ProcessorPlan

Open the plan for processing.

Specified by:

open in class ProcessorPlan

Throws:

TeiidComponentException

TeiidProcessingException

setQueryPlan

public void setQueryPlan(ProcessorPlan queryPlan)

setRowProcedure

public void setRowProcedure(ProcedurePlan rowProcedure)

setParams

public void setParams(Map<ElementSymbol,Expression> params)

setLookupMap

public void setLookupMap(Map<Expression,Integer> symbolMap)

reset

public void reset()

Description copied from class: ProcessorPlan

Reset a plan so that it can be processed again.

Overrides:

reset in class ProcessorPlan

requiresTransaction

public Boolean requiresTransaction(boolean transactionalReads)

Overrides:

requiresTransaction in class ProcessorPlan

toString

public String toString()

Overrides:

toString in class Object

setTupleSource

public void setTupleSource(TupleSource tupleSource)

setSingleRow

public void setSingleRow(boolean singleRow)