Package org.apache.druid.segment.realtime

Class FireHydrant

java.lang.Object

org.apache.druid.segment.realtime.FireHydrant

public class FireHydrant
extends Object

Constructor Summary

Constructors

Constructor	Description
FireHydrant(IncrementalIndex index, int count, SegmentId segmentId)
FireHydrant(Segment segment, int count)

Method Summary

Modifier and Type	Method	Description
Segment	acquireSegment()	Get a segment Segment from segmentReferenceProvider
int	getCount()
ReferenceCountedSegmentProvider	getHydrantSegment()
IncrementalIndex	getIndex()
Optional<Segment>	getSegmentForQuery(SegmentMapFunction segmentMapFn)	Get a Segment, applying a SegmentMapFunction to segmentReferenceProvider.
SegmentId	getSegmentId()
int	getSegmentNumDimensionColumns()
int	getSegmentNumMetricColumns()
boolean	hasSwapped()
void	swapSegment(Segment newSegment)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

FireHydrant

public FireHydrant(IncrementalIndex index,
 int count,
 SegmentId segmentId)

FireHydrant

public FireHydrant(Segment segment,
 int count)

Method Details

getIndex

@Nullable
public IncrementalIndex getIndex()

getSegmentId

public SegmentId getSegmentId()

getSegmentNumDimensionColumns

public int getSegmentNumDimensionColumns()

getSegmentNumMetricColumns

public int getSegmentNumMetricColumns()

getCount

public int getCount()

hasSwapped

public boolean hasSwapped()

swapSegment

public void swapSegment(@Nullable
 Segment newSegment)

acquireSegment

public Segment acquireSegment()

Get a segment Segment from segmentReferenceProvider

getSegmentForQuery

public Optional<Segment> getSegmentForQuery(SegmentMapFunction segmentMapFn)

Get a Segment, applying a SegmentMapFunction to segmentReferenceProvider. Similar to acquireSegment(), but applies the SegmentMapFunction inside of the loop.

getHydrantSegment

public ReferenceCountedSegmentProvider getHydrantSegment()

toString

public String toString()

Overrides:

toString in class Object