Package org.apache.lucene.codecs

Class KnnVectorsWriter

java.lang.Object

org.apache.lucene.codecs.KnnVectorsWriter

All Implemented Interfaces:

Closeable, AutoCloseable, Accountable

Direct Known Subclasses:

BufferingKnnVectorsWriter, Lucene94HnswVectorsWriter, PerFieldKnnVectorsFormat.FieldsWriter

public abstract class KnnVectorsWriter
extends Object
implements Accountable, Closeable

Writes vectors to an index.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	KnnVectorsWriter.MergedVectorValues	View over multiple VectorValues supporting iterator-style access via DocIdMerger.
private static class	KnnVectorsWriter.VectorValuesSub	Tracks state of one sub-reader that we are merging

Field Summary

Fields inherited from interface org.apache.lucene.util.Accountable

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	KnnVectorsWriter()	Sole constructor

Method Summary

Modifier and Type	Method	Description
abstract KnnFieldVectorsWriter<?>	addField(FieldInfo fieldInfo)	Add new field for indexing
abstract void	finish()	Called once at the end before close
abstract void	flush(int maxDoc, Sorter.DocMap sortMap)	Flush all buffered data on disk *
final void	merge(MergeState mergeState)	Merges the segment vectors for all fields.
<T> void	mergeOneField(FieldInfo fieldInfo, MergeState mergeState)	Write field for merging

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.util.Accountable

getChildResources, ramBytesUsed

Methods inherited from interface java.io.Closeable

close

Constructor Details

KnnVectorsWriter

protected KnnVectorsWriter()

Sole constructor

Method Details

addField

public abstract KnnFieldVectorsWriter<?> addField(FieldInfo fieldInfo)
                                           throws IOException

Add new field for indexing

Throws:

IOException

flush

public abstract void flush(int maxDoc,
 Sorter.DocMap sortMap)
                    throws IOException

Flush all buffered data on disk *

Throws:

IOException

mergeOneField

public <T> void mergeOneField(FieldInfo fieldInfo,
 MergeState mergeState)
                       throws IOException

Write field for merging

Throws:

IOException

finish

public abstract void finish()
                     throws IOException

Called once at the end before close

Throws:

IOException

merge

public final void merge(MergeState mergeState)
                 throws IOException

Merges the segment vectors for all fields. This default implementation delegates to mergeOneField(org.apache.lucene.index.FieldInfo, org.apache.lucene.index.MergeState), passing a KnnVectorsReader that combines the vector values and ignores deleted documents.

Throws:

IOException