Package org.apache.druid.segment.loading

Class VirtualPlaceholderSegment

java.lang.Object

org.apache.druid.segment.RowBasedSegment<Row>

org.apache.druid.segment.loading.VirtualPlaceholderSegment

All Implemented Interfaces:

Closeable, AutoCloseable, Segment

public class VirtualPlaceholderSegment
extends RowBasedSegment<Row>

Empty segment with nothing but a time column, used when SegmentLoaderConfig.isVirtualStorage() is true to create synthetic segments for SegmentMetadataQuery so to not force download of segments from deep storage when computing the SQL schema.

Constructor Summary

Constructors

Constructor	Description
VirtualPlaceholderSegment(DataSegment dataSegment)

Method Summary

Modifier and Type	Method	Description
<T> T	as(Class<T> clazz)
org.joda.time.Interval	getDataInterval()
SegmentId	getId()

Methods inherited from class org.apache.druid.segment.RowBasedSegment

close

Methods inherited from class java.lang.Object

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

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

getDebugString, isTombstone, validateOrElseThrow

Constructor Details

VirtualPlaceholderSegment

public VirtualPlaceholderSegment(DataSegment dataSegment)

Method Details

getId

public SegmentId getId()

Specified by:

getId in interface Segment

Overrides:

getId in class RowBasedSegment<Row>

getDataInterval

@Nonnull
public org.joda.time.Interval getDataInterval()

Specified by:

getDataInterval in interface Segment

Overrides:

getDataInterval in class RowBasedSegment<Row>

as

@Nullable
public <T> T as(@Nonnull
 Class<T> clazz)

Specified by:

as in interface Segment

Overrides:

as in class RowBasedSegment<Row>