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(org.apache.druid.segment.incremental.IncrementalIndex index, int count, org.apache.druid.timeline.SegmentId segmentId)
FireHydrant(org.apache.druid.segment.Segment adapter, int count)

Method Summary

Modifier and Type	Method	Description
org.apache.druid.java.util.common.Pair<org.apache.druid.segment.ReferenceCountingSegment,Closeable>	getAndIncrementSegment()
int	getCount()
org.apache.druid.segment.ReferenceCountingSegment	getHydrantSegment()
org.apache.druid.segment.ReferenceCountingSegment	getIncrementedSegment()
org.apache.druid.segment.incremental.IncrementalIndex	getIndex()
org.joda.time.Interval	getSegmentDataInterval()
Optional<org.apache.druid.java.util.common.Pair<org.apache.druid.segment.SegmentReference,Closeable>>	getSegmentForQuery(Function<org.apache.druid.segment.SegmentReference,org.apache.druid.segment.SegmentReference> segmentMapFn)	This method is like a combined form of getIncrementedSegment() and getAndIncrementSegment() that deals in SegmentReference instead of directly with ReferenceCountingSegment in order to acquire reference count for both hydrant's segment and any tracked joinables taking part in the query.
org.apache.druid.timeline.SegmentId	getSegmentId()
int	getSegmentNumDimensionColumns()
int	getSegmentNumMetricColumns()
boolean	hasSwapped()
void	swapSegment(org.apache.druid.segment.Segment newSegment)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FireHydrant

public FireHydrant(org.apache.druid.segment.incremental.IncrementalIndex index,
                   int count,
                   org.apache.druid.timeline.SegmentId segmentId)

FireHydrant

public FireHydrant(org.apache.druid.segment.Segment adapter,
                   int count)

Method Detail

getIndex

public org.apache.druid.segment.incremental.IncrementalIndex getIndex()

getSegmentId

public org.apache.druid.timeline.SegmentId getSegmentId()

getSegmentNumDimensionColumns

public int getSegmentNumDimensionColumns()

getSegmentNumMetricColumns

public int getSegmentNumMetricColumns()

getSegmentDataInterval

public org.joda.time.Interval getSegmentDataInterval()

getCount

public int getCount()

hasSwapped

public boolean hasSwapped()

swapSegment

public void swapSegment(@Nullable
                        org.apache.druid.segment.Segment newSegment)

getIncrementedSegment

public org.apache.druid.segment.ReferenceCountingSegment getIncrementedSegment()

getAndIncrementSegment

public org.apache.druid.java.util.common.Pair<org.apache.druid.segment.ReferenceCountingSegment,Closeable> getAndIncrementSegment()

getSegmentForQuery

public Optional<org.apache.druid.java.util.common.Pair<org.apache.druid.segment.SegmentReference,Closeable>> getSegmentForQuery(Function<org.apache.druid.segment.SegmentReference,org.apache.druid.segment.SegmentReference> segmentMapFn)

This method is like a combined form of getIncrementedSegment() and getAndIncrementSegment() that deals in SegmentReference instead of directly with ReferenceCountingSegment in order to acquire reference count for both hydrant's segment and any tracked joinables taking part in the query.

getHydrantSegment

public org.apache.druid.segment.ReferenceCountingSegment getHydrantSegment()

toString

public String toString()

Overrides:

toString in class Object