Package org.apache.lucene.index

Class BufferingKnnVectorsWriter

java.lang.Object

org.apache.lucene.codecs.KnnVectorsWriter

org.apache.lucene.index.BufferingKnnVectorsWriter

All Implemented Interfaces:

Closeable, AutoCloseable, Accountable

public abstract class BufferingKnnVectorsWriter
extends KnnVectorsWriter

Buffers up pending vector value(s) per doc, then flushes when segment flushes. Used for SimpleTextKnnVectorsWriter and for vectors writers before v 9.3 .

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.codecs.KnnVectorsWriter

KnnVectorsWriter.MergedVectorValues

Field Summary

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

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BufferingKnnVectorsWriter()	Sole constructor

Method Summary

Modifier and Type	Method	Description
KnnFieldVectorsWriter<float[]>	addField(FieldInfo fieldInfo)	Add new field for indexing
void	flush(int maxDoc, Sorter.DocMap sortMap)	Flush all buffered data on disk *
void	mergeOneField(FieldInfo fieldInfo, MergeState mergeState)	Write field for merging
long	ramBytesUsed()	Return the memory usage of this object in bytes.
protected abstract void	writeField(FieldInfo fieldInfo, KnnVectorsReader knnVectorsReader, int maxDoc)	Write the provided field

Methods inherited from class org.apache.lucene.codecs.KnnVectorsWriter

finish, merge

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

Methods inherited from interface java.io.Closeable

close

Constructor Detail

BufferingKnnVectorsWriter

protected BufferingKnnVectorsWriter()

Sole constructor

Method Detail

addField

public KnnFieldVectorsWriter<float[]> addField(FieldInfo fieldInfo)
                                        throws IOException

Description copied from class: KnnVectorsWriter

Add new field for indexing

Specified by:

addField in class KnnVectorsWriter

Throws:

IOException

flush

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

Description copied from class: KnnVectorsWriter

Flush all buffered data on disk *

Specified by:

flush in class KnnVectorsWriter

Throws:

IOException

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

Return the memory usage of this object in bytes. Negative values are illegal.

mergeOneField

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

Description copied from class: KnnVectorsWriter

Write field for merging

Overrides:

mergeOneField in class KnnVectorsWriter

Throws:

IOException

writeField

protected abstract void writeField(FieldInfo fieldInfo,
                                   KnnVectorsReader knnVectorsReader,
                                   int maxDoc)
                            throws IOException

Write the provided field

Throws:

IOException