Package org.apache.druid.segment

Class SegmentReference

java.lang.Object

org.apache.druid.segment.SegmentReference

All Implemented Interfaces:

Closeable, AutoCloseable

public class SegmentReference
extends Object
implements Closeable

Wrapper for a SegmentDescriptor and Optional<Segment>, the latter being created by a SegmentMapFunction being applied to a ReferenceCountedSegmentProvider. Closing this object closes both the segmentReference and any closeables attached from the process of creating this object, such as from AcquireSegmentAction

Constructor Summary

Constructors

Constructor	Description
SegmentReference(SegmentDescriptor segmentDescriptor, Optional<Segment> segmentReference, Closeable cleanupHold)

Method Summary

Modifier and Type	Method	Description
void	close()
SegmentDescriptor	getSegmentDescriptor()
Optional<Segment>	getSegmentReference()
static SegmentReference	missing(SegmentDescriptor segmentDescriptor)

Methods inherited from class java.lang.Object

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

Constructor Details

SegmentReference

public SegmentReference(SegmentDescriptor segmentDescriptor,
 Optional<Segment> segmentReference,
 @Nullable
 Closeable cleanupHold)

Method Details

missing

public static SegmentReference missing(SegmentDescriptor segmentDescriptor)

getSegmentDescriptor

public SegmentDescriptor getSegmentDescriptor()

getSegmentReference

public Optional<Segment> getSegmentReference()

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException