Package org.apache.druid.segment

Class ReferenceCountedSegmentProvider.LeafReference

java.lang.Object

org.apache.druid.segment.ReferenceCountedSegmentProvider.LeafReference

All Implemented Interfaces:

Closeable, AutoCloseable, Segment

Direct Known Subclasses:

ReferenceCountedSegmentProvider.CloseableWrappedReference, ReferenceCountedSegmentProvider.ReferenceClosingSegment, ReferenceCountedSegmentProvider.UnmanagedReference

Enclosing class:

ReferenceCountedSegmentProvider

public abstract static class ReferenceCountedSegmentProvider.LeafReference
extends Object
implements Segment

Base type to mark Segment returned by ReferenceCountedObjectProvider<Segment> as 'leaf' segments, to distinguish from other transformations which can be done on top of this segment, such as by SegmentMapFunction

Field Summary

Fields

Modifier and Type	Field	Description
protected final Segment	baseSegment

Constructor Summary

Constructors

Constructor	Description
LeafReference(Segment baseSegment)

Method Summary

Modifier and Type	Method	Description
org.joda.time.Interval	getDataInterval()
String	getDebugString()	Developer friendly string suitable to use in internal error messages and provide some additional information about what kind of segment was involved in a problem
SegmentId	getId()	Returns the SegmentId of this segment, if it is backed by a real table, otherwise returns null.
boolean	isTombstone()
void	validateOrElseThrow(PolicyEnforcer policyEnforcer)	Validates if the segment complies with the policy restrictions on tables.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Closeable

close

Methods inherited from interface org.apache.druid.segment.Segment

as

Field Details

baseSegment

protected final Segment baseSegment

Constructor Details

LeafReference

public LeafReference(Segment baseSegment)

Method Details

getId

@Nullable
public SegmentId getId()

Description copied from interface: Segment

Returns the SegmentId of this segment, if it is backed by a real table, otherwise returns null.

Specified by:

getId in interface Segment

getDataInterval

public org.joda.time.Interval getDataInterval()

Specified by:

getDataInterval in interface Segment

isTombstone

public boolean isTombstone()

Specified by:

isTombstone in interface Segment

getDebugString

public String getDebugString()

Description copied from interface: Segment

Developer friendly string suitable to use in internal error messages and provide some additional information about what kind of segment was involved in a problem

Specified by:

getDebugString in interface Segment

validateOrElseThrow

public void validateOrElseThrow(PolicyEnforcer policyEnforcer)

Description copied from interface: Segment

Validates if the segment complies with the policy restrictions on tables.

This should be called right before the segment is about to be processed by the query stack, and after ExecutionVertex.createSegmentMapFunction(PolicyEnforcer).

Specified by:

validateOrElseThrow in interface Segment