org.apache.drill.exec.physical.impl.window

Class WindowFrameRecordBatch

java.lang.Object

org.apache.drill.exec.record.AbstractRecordBatch<WindowPOP>

org.apache.drill.exec.physical.impl.window.WindowFrameRecordBatch

All Implemented Interfaces:

AutoCloseable, Iterable<VectorWrapper<?>>, CloseableRecordBatch, RecordBatch, VectorAccessible

public class WindowFrameRecordBatch
extends AbstractRecordBatch<WindowPOP>

support for OVER(PARTITION BY expression1,expression2,... [ORDER BY expressionA, expressionB,...])

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.exec.record.AbstractRecordBatch

AbstractRecordBatch.BatchState

Nested classes/interfaces inherited from interface org.apache.drill.exec.record.RecordBatch

RecordBatch.IterOutcome

Field Summary

Fields inherited from class org.apache.drill.exec.record.AbstractRecordBatch

batchStatsContext, container, context, oContext, popConfig, state, stats, unionTypeEnabled

Fields inherited from interface org.apache.drill.exec.record.RecordBatch

MAX_BATCH_ROW_COUNT

Constructor Summary

Constructors

Constructor and Description
WindowFrameRecordBatch(WindowPOP popConfig, FragmentContext context, RecordBatch incoming)

Method Summary

Modifier and Type	Method and Description
protected void	buildSchema()
protected void	cancelIncoming()
void	close()
void	dump() Perform dump of this batch's state to logs.
int	getRecordCount() Get the number of records.
RecordBatch.IterOutcome	innerNext() Hold incoming batches in memory until all window functions are ready to process the batch on top of the queue

Methods inherited from class org.apache.drill.exec.record.AbstractRecordBatch

cancel, checkContinue, getContainer, getContext, getOutgoingContainer, getPopConfig, getRecordBatchStatsContext, getSchema, getSelectionVector2, getSelectionVector4, getValueAccessorById, getValueVectorId, getWritableBatch, isRecordBatchStatsLoggingEnabled, iterator, next, next, next, schemaChangeException, schemaChangeException

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

WindowFrameRecordBatch

public WindowFrameRecordBatch(WindowPOP popConfig,
                              FragmentContext context,
                              RecordBatch incoming)
                       throws OutOfMemoryException

Throws:

OutOfMemoryException

Method Detail

innerNext

public RecordBatch.IterOutcome innerNext()

Hold incoming batches in memory until all window functions are ready to process the batch on top of the queue

Specified by:

innerNext in class AbstractRecordBatch<WindowPOP>

buildSchema

protected void buildSchema()

Overrides:

buildSchema in class AbstractRecordBatch<WindowPOP>

close

public void close()

Specified by:

close in interface AutoCloseable

Overrides:

close in class AbstractRecordBatch<WindowPOP>

cancelIncoming

protected void cancelIncoming()

Specified by:

cancelIncoming in class AbstractRecordBatch<WindowPOP>

getRecordCount

public int getRecordCount()

Description copied from interface: VectorAccessible

Get the number of records.

Returns:

number of records

dump

public void dump()

Description copied from interface: RecordBatch

Perform dump of this batch's state to logs.