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

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

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

MAX_BATCH_SIZE

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
protected void	buildSchema()
void	close()
int	getRecordCount() Gets the number of records that are within this record.
RecordBatch.IterOutcome	innerNext() Hold incoming batches in memory until all window functions are ready to process the batch on top of the queue
protected void	killIncoming(boolean sendUpstream)

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

getContext, getOutgoingContainer, getPopConfig, getSchema, getSelectionVector2, getSelectionVector4, getValueAccessorById, getValueVectorId, getWritableBatch, iterator, kill, next, next, next

Methods inherited from class java.lang.Object

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

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()
                    throws SchemaChangeException

Overrides:

buildSchema in class AbstractRecordBatch<WindowPOP>

Throws:

SchemaChangeException

close

public void close()

Specified by:

close in interface AutoCloseable

Overrides:

close in class AbstractRecordBatch<WindowPOP>

killIncoming

protected void killIncoming(boolean sendUpstream)

Specified by:

killIncoming in class AbstractRecordBatch<WindowPOP>

getRecordCount

public int getRecordCount()

Description copied from interface: RecordBatch

Gets the number of records that are within this record.

Returns:

number of records